[DO NOT MERGE v5 00/37] Device Tree support for SH7751 based board

[DO NOT MERGE v5 00/37] Device Tree support for SH7751 based board

[Yoshinori Sato]

This is an updated version of something I wrote about 7 years ago.
Minimum support for R2D-plus and LANDISK.
I think R2D-1 will work if you add AX88796 to dts.
And board-specific functions and SCI's SPI functions are not supported.

You can get it working with qemu found here.
https://gitlab.com/yoshinori.sato/qemu/-/tree/landisk


v5 changes.
- pci-sh7751: revert header changes. and some fix in previuous driver.
- sh/kernel/iomap.c: Use SH io functions.
- sm501 and sm501fb: re-write DT support.

v4 changes.
- cpg-sh7750: use clk-divider and clk-gate.
- pci-sh7751: unified header files to old PCI driver.
- irq-renesas-sh7751: IPR registers direct mapping.
- irq-renesas-sh7751irl: useful register bit mapping.
- sm501 and sm501fb: re-write dt parser.
- j2_minus: fix build error.
- dt-binding schema: fix some errors.
- *.dts: cleanup.

v3 changes.
- Rewrite clk drivers.
- Added sh_tmu to OF support.
- Cleanup PCI stuff.
- Update sm501 and sm501fb OF support.
- Update devicetree and documents.

v2 changes.
- Rebasing v6,6-rc1
- re-write irqchip driver.
- Add binding documents.
- Cleanup review comment.

Yoshinori Sato (37):
  sh: passing FDT address to kernel startup.
  sh: Kconfig unified OF supported targets.
  sh: Enable OF support for build and configuration.
  dt-bindings: interrupt-controller: Add header for Renesas SH3/4 INTC.
  sh: GENERIC_IRQ_CHIP support for CONFIG_OF=y
  sh: kernel/setup Update DT support.
  sh: Fix COMMON_CLK support in CONFIG_OF=y.
  clocksource: sh_tmu: CLOCKSOURCE support.
  dt-bindings: timer: renesas,tmu: add renesas,tmu-sh7750
  sh: Common PCI Framework driver support.
  pci: pci-sh7751: Add SH7751 PCI driver
  dt-bindings: pci: pci-sh7751: Add SH7751 PCI
  dt-bindings: clock: sh7750-cpg: Add renesas,sh7750-cpg header.
  clk: Compatible with narrow registers
  clk: renesas: Add SH7750/7751 CPG Driver
  irqchip: Add SH7751 INTC driver
  dt-bindings: interrupt-controller: renesas,sh7751-intc: Add
    json-schema
  irqchip: SH7751 IRL external encoder with enable gate.
  dt-bindings: interrupt-controller: renesas,sh7751-irl-ext: Add
    json-schema
  serial: sh-sci: fix SH4 OF support.
  dt-bindings: serial: renesas,scif: Add scif-sh7751.
  dt-bindings: display: smi,sm501: SMI SM501 binding json-schema
  mfd: sm501: Convert platform_data to OF property
  dt-binding: sh: cpus: Add SH CPUs json-schema
  dt-bindings: vendor-prefixes: Add iodata
  dt-bindings: vendor-prefixes:  Add smi
  dt-bindings: ata: ata-generic: Add new targets
  dt-bindings: soc: renesas: sh: Add SH7751 based target
  sh: SH7751R SoC Internal peripheral definition dtsi.
  sh: add RTS7751R2D Plus DTS
  sh: Add IO DATA LANDISK dts
  sh: Add IO DATA USL-5P dts
  sh: j2_mimas_v2.dts update
  sh: Add dtbs target support.
  sh: RTS7751R2D Plus OF defconfig
  sh: LANDISK OF defconfig
  sh: j2_defconfig: update

 .../devicetree/bindings/ata/ata-generic.yaml  |   2 +
 .../bindings/clock/renesas,sh7750-cpg.yaml    | 103 ++++
 .../bindings/display/smi,sm501.yaml           | 134 +++++
 .../renesas,sh7751-intc.yaml                  | 105 ++++
 .../renesas,sh7751-irl-ext.yaml               |  83 +++
 .../bindings/pci/renesas,sh7751-pci.yaml      | 128 +++++
 .../bindings/serial/renesas,scif.yaml         |   1 +
 .../devicetree/bindings/sh/cpus.yaml          |  73 +++
 .../devicetree/bindings/soc/renesas/sh.yaml   |  32 ++
 .../bindings/timer/renesas,tmu.yaml           |  11 +-
 .../devicetree/bindings/vendor-prefixes.yaml  |   4 +
 arch/sh/Kconfig                               |  11 +-
 arch/sh/boards/Kconfig                        |  24 +-
 arch/sh/boards/of-generic.c                   |  28 +-
 arch/sh/boot/compressed/head_32.S             |   5 +-
 arch/sh/boot/dts/Makefile                     |   5 +
 arch/sh/boot/dts/j2_mimas_v2.dts              |   2 +-
 arch/sh/boot/dts/landisk.dts                  |  74 +++
 arch/sh/boot/dts/rts7751r2dplus.dts           | 157 ++++++
 arch/sh/boot/dts/sh7751r.dtsi                 | 150 ++++++
 arch/sh/boot/dts/usl-5p.dts                   |  84 +++
 arch/sh/configs/j2_defconfig                  |  11 +-
 arch/sh/configs/landisk-of_defconfig          | 111 ++++
 arch/sh/configs/rts7751r2dplus-of_defconfig   |  93 ++++
 arch/sh/drivers/Makefile                      |   2 +
 arch/sh/drivers/pci/pci.c                     |   6 -
 arch/sh/include/asm/io.h                      |   6 +
 arch/sh/include/asm/irq.h                     |  10 +-
 arch/sh/include/asm/pci.h                     |   4 +
 arch/sh/kernel/cpu/Makefile                   |   6 +-
 arch/sh/kernel/cpu/irq/imask.c                |  17 +
 arch/sh/kernel/cpu/sh4/Makefile               |   3 +
 arch/sh/kernel/iomap.c                        |  24 +
 arch/sh/kernel/setup.c                        |  51 +-
 arch/sh/kernel/time.c                         |  12 +
 drivers/clk/clk-divider.c                     |  56 +-
 drivers/clk/clk-gate.c                        |  56 +-
 drivers/clk/renesas/Kconfig                   |  16 +-
 drivers/clk/renesas/Makefile                  |   1 +
 drivers/clk/renesas/clk-sh7750.c              | 498 ++++++++++++++++++
 drivers/clocksource/sh_tmu.c                  | 161 ++++--
 drivers/irqchip/Kconfig                       |  15 +
 drivers/irqchip/Makefile                      |   3 +
 drivers/irqchip/irq-renesas-sh7751.c          | 290 ++++++++++
 drivers/irqchip/irq-renesas-sh7751irl.c       | 227 ++++++++
 drivers/mfd/sm501.c                           |  99 ++++
 drivers/pci/controller/Kconfig                |   9 +
 drivers/pci/controller/Makefile               |   1 +
 drivers/pci/controller/pci-sh7751.c           | 302 +++++++++++
 drivers/pci/controller/pci-sh7751.h           |  76 +++
 drivers/tty/serial/Kconfig                    |   2 +-
 drivers/tty/serial/sh-sci.c                   |   6 +-
 drivers/video/fbdev/sm501fb.c                 |  82 +++
 include/dt-bindings/clock/sh7750-cpg.h        |  26 +
 include/dt-bindings/display/sm501.h           |  25 +
 .../interrupt-controller/sh7751-intc.h        |  21 +
 include/linux/clk-provider.h                  |  22 +-
 include/linux/sh_intc.h                       |   7 +-
 58 files changed, 3396 insertions(+), 177 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/renesas,sh7750-cpg.yaml
 create mode 100644 Documentation/devicetree/bindings/display/smi,sm501.yaml
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml
 create mode 100644 Documentation/devicetree/bindings/pci/renesas,sh7751-pci.yaml
 create mode 100644 Documentation/devicetree/bindings/sh/cpus.yaml
 create mode 100644 Documentation/devicetree/bindings/soc/renesas/sh.yaml
 create mode 100644 arch/sh/boot/dts/landisk.dts
 create mode 100644 arch/sh/boot/dts/rts7751r2dplus.dts
 create mode 100644 arch/sh/boot/dts/sh7751r.dtsi
 create mode 100644 arch/sh/boot/dts/usl-5p.dts
 create mode 100644 arch/sh/configs/landisk-of_defconfig
 create mode 100644 arch/sh/configs/rts7751r2dplus-of_defconfig
 create mode 100644 drivers/clk/renesas/clk-sh7750.c
 create mode 100644 drivers/irqchip/irq-renesas-sh7751.c
 create mode 100644 drivers/irqchip/irq-renesas-sh7751irl.c
 create mode 100644 drivers/pci/controller/pci-sh7751.c
 create mode 100644 drivers/pci/controller/pci-sh7751.h
 create mode 100644 include/dt-bindings/clock/sh7750-cpg.h
 create mode 100644 include/dt-bindings/display/sm501.h
 create mode 100644 include/dt-bindings/interrupt-controller/sh7751-intc.h

-- 
2.39.2

[DO NOT MERGE v5 01/37] sh: passing FDT address to kernel startup.

[Yoshinori Sato]

R4 is caller saved in SH ABI.
Save it so it doesn't get corrupted until it's needed for initialization.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/compressed/head_32.S | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/sh/boot/compressed/head_32.S b/arch/sh/boot/compressed/head_32.S
index 7bb168133dbb..6be59851122e 100644
--- a/arch/sh/boot/compressed/head_32.S
+++ b/arch/sh/boot/compressed/head_32.S
@@ -15,7 +15,8 @@ startup:
 	/* Load initial status register */
 	mov.l   init_sr, r1
 	ldc     r1, sr
-
+	/* Save FDT address */
+	mov	r4, r13
 	/* Move myself to proper location if necessary */
 	mova	1f, r0
 	mov.l	1f, r2
@@ -84,7 +85,7 @@ l1:
 	/* Jump to the start of the decompressed kernel */
 	mov.l	kernel_start_addr, r0
 	jmp	@r0
-	nop
+	 mov	r13, r4
 	
 	.align	2
 bss_start_addr:
-- 
2.39.2

[DO NOT MERGE v5 02/37] sh: Kconfig unified OF supported targets.

[Yoshinori Sato]

Targets that support OF should be treated as one board.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boards/Kconfig | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig
index 109bec4dad94..e7e52779ef62 100644
--- a/arch/sh/boards/Kconfig
+++ b/arch/sh/boards/Kconfig
@@ -19,16 +19,9 @@ config SH_DEVICE_TREE
 	select TIMER_OF
 	select COMMON_CLK
 	select GENERIC_CALIBRATE_DELAY
-
-config SH_JCORE_SOC
-	bool "J-Core SoC"
-	select SH_DEVICE_TREE
-	select CLKSRC_JCORE_PIT
-	select JCORE_AIC
-	depends on CPU_J2
-	help
-	  Select this option to include drivers core components of the
-	  J-Core SoC, including interrupt controllers and timers.
+	select GENERIC_IRQ_CHIP
+	select SYS_SUPPORTS_PCI
+	select GENERIC_PCI_IOMAP if PCI
 
 config SH_SOLUTION_ENGINE
 	bool "SolutionEngine"
@@ -293,6 +286,7 @@ config SH_LANDISK
 	bool "LANDISK"
 	depends on CPU_SUBTYPE_SH7751R
 	select HAVE_PCI
+	select SYS_SUPPORTS_PCI
 	help
 	  I-O DATA DEVICE, INC. "LANDISK Series" support.
 
@@ -369,6 +363,16 @@ config SH_APSH4AD0A
 	help
 	  Select AP-SH4AD-0A if configuring for an ALPHAPROJECT AP-SH4AD-0A.
 
+config SH_OF_BOARD
+	bool "General Open Firmware boards"
+	select SH_DEVICE_TREE
+	select CLKSRC_JCORE_PIT if CPU_J2
+	select JCORE_AIC if CPU_J2
+	select HAVE_PCI if CPU_SUBTYPE_SH7751R
+	help
+	  This board means general OF supported targets.
+
+
 source "arch/sh/boards/mach-r2d/Kconfig"
 source "arch/sh/boards/mach-highlander/Kconfig"
 source "arch/sh/boards/mach-sdk7780/Kconfig"
-- 
2.39.2

[DO NOT MERGE v5 03/37] sh: Enable OF support for build and configuration.

[Yoshinori Sato]

IRQ, CLK and PCI will be migrated to a common driver framework.
So if OF, disable the SH specific drivers.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/Kconfig                 | 11 ++++++-----
 arch/sh/drivers/Makefile        |  2 ++
 arch/sh/kernel/cpu/Makefile     |  9 +++++++--
 arch/sh/kernel/cpu/sh4/Makefile |  3 +++
 4 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 7500521b2b98..63961d273af7 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -65,10 +65,10 @@ config SUPERH
 	select MODULES_USE_ELF_RELA
 	select NEED_SG_DMA_LENGTH
 	select NO_DMA if !MMU && !DMA_COHERENT
-	select NO_GENERIC_PCI_IOPORT_MAP if PCI
+	select NO_GENERIC_PCI_IOPORT_MAP if !SH_DEVICE_TREE
 	select OLD_SIGACTION
 	select OLD_SIGSUSPEND
-	select PCI_DOMAINS if PCI
+	select PCI_DOMAINS if PCI && !SH_DEVICE_TREE
 	select PERF_EVENTS
 	select PERF_USE_VMALLOC
 	select RTC_LIB
@@ -152,7 +152,7 @@ menu "System type"
 #
 config CPU_SH2
 	bool
-	select SH_INTC
+	select SH_INTC if !SH_DEVICE_TREE
 
 config CPU_SH2A
 	bool
@@ -178,7 +178,7 @@ config CPU_SH4
 	select CPU_HAS_INTEVT
 	select CPU_HAS_SR_RB
 	select CPU_HAS_FPU if !CPU_SH4AL_DSP
-	select SH_INTC
+	select SH_INTC if !SH_DEVICE_TREE
 	select SYS_SUPPORTS_SH_TMU
 
 config CPU_SH4A
@@ -521,6 +521,7 @@ config SH_PCLK_FREQ
 
 config SH_CLK_CPG
 	def_bool y
+	depends on !COMMON_CLK
 
 config SH_CLK_CPG_LEGACY
 	depends on SH_CLK_CPG
@@ -665,7 +666,7 @@ config BUILTIN_DTB_SOURCE
 	  kernel.
 
 config ZERO_PAGE_OFFSET
-	hex
+	hex "Zero page offset"
 	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 				SH_7751_SOLUTION_ENGINE
 	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
diff --git a/arch/sh/drivers/Makefile b/arch/sh/drivers/Makefile
index 8bd10b904bf9..83f609ca1eb4 100644
--- a/arch/sh/drivers/Makefile
+++ b/arch/sh/drivers/Makefile
@@ -5,6 +5,8 @@
 
 obj-y		+= dma/ platform_early.o
 
+ifndef CONFIG_SH_DEVICE_TREE
 obj-$(CONFIG_PCI)		+= pci/
+endif
 obj-$(CONFIG_PUSH_SWITCH)	+= push-switch.o
 obj-$(CONFIG_HEARTBEAT)		+= heartbeat.o
diff --git a/arch/sh/kernel/cpu/Makefile b/arch/sh/kernel/cpu/Makefile
index 46118236bf04..e00ebf134985 100644
--- a/arch/sh/kernel/cpu/Makefile
+++ b/arch/sh/kernel/cpu/Makefile
@@ -16,6 +16,11 @@ obj-$(CONFIG_ARCH_SHMOBILE)	+= shmobile/
 # Common interfaces.
 
 obj-$(CONFIG_SH_ADC)		+= adc.o
+ifndef CONFIG_COMMON_CLK
+obj-y += clock.o
 obj-$(CONFIG_SH_CLK_CPG_LEGACY)	+= clock-cpg.o
-
-obj-y	+= irq/ init.o clock.o fpu.o pfc.o proc.o
+endif
+ifndef CONFIG_GENERIC_IRQ_CHIP
+obj-y	+= irq/
+endif
+obj-y	+= init.o fpu.o pfc.o proc.o
diff --git a/arch/sh/kernel/cpu/sh4/Makefile b/arch/sh/kernel/cpu/sh4/Makefile
index 02e3ee16e15c..33da4c86feff 100644
--- a/arch/sh/kernel/cpu/sh4/Makefile
+++ b/arch/sh/kernel/cpu/sh4/Makefile
@@ -15,6 +15,7 @@ perf-$(CONFIG_CPU_SUBTYPE_SH7750)	:= perf_event.o
 perf-$(CONFIG_CPU_SUBTYPE_SH7750S)	:= perf_event.o
 perf-$(CONFIG_CPU_SUBTYPE_SH7091)	:= perf_event.o
 
+ifndef CONFIG_SH_DEVICE_TREE
 # CPU subtype setup
 obj-$(CONFIG_CPU_SUBTYPE_SH7750)	+= setup-sh7750.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7750R)	+= setup-sh7750.o
@@ -29,5 +30,7 @@ ifndef CONFIG_CPU_SH4A
 clock-$(CONFIG_CPU_SH4)			:= clock-sh4.o
 endif
 
+endif # CONFIG_SH_DEVICE_TREE
+
 obj-y					+= $(clock-y)
 obj-$(CONFIG_PERF_EVENTS)		+= $(perf-y)
-- 
2.39.2

[DO NOT MERGE v5 04/37] dt-bindings: interrupt-controller: Add header for Renesas SH3/4 INTC.

[Yoshinori Sato]

Renesas SH7751 Interrupt controller priority register define.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../interrupt-controller/sh7751-intc.h        | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 include/dt-bindings/interrupt-controller/sh7751-intc.h

diff --git a/include/dt-bindings/interrupt-controller/sh7751-intc.h b/include/dt-bindings/interrupt-controller/sh7751-intc.h
new file mode 100644
index 000000000000..5783ec72d70f
--- /dev/null
+++ b/include/dt-bindings/interrupt-controller/sh7751-intc.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+ *
+ * SH3/4 INTC EVT - IRQ conversion
+ */
+
+#ifndef __DT_BINDINGS_RENESAS_SH7751_INTC
+#define __DT_BINDINGS_RENESAS_SH7751_INTC
+
+#define evt2irq(evt)		((evt) >> 5)
+
+#define IPRA			0
+#define IPRB			4
+#define IPRC			8
+#define IPRD			12
+#define INTPRI00		256
+#define IPR_B12			12
+#define IPR_B8			8
+#define IPR_B4			4
+#define IPR_B0			0
+
+#endif
-- 
2.39.2

Re: [DO NOT MERGE v5 04/37] dt-bindings: interrupt-controller: Add header for Renesas SH3/4 INTC.

[Krzysztof Kozlowski]

On 05/12/2023 10:45, Yoshinori Sato wrote:
> Renesas SH7751 Interrupt controller priority register define.
> 
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  .../interrupt-controller/sh7751-intc.h        | 21 +++++++++++++++++++
>  1 file changed, 21 insertions(+)
>  create mode 100644 include/dt-bindings/interrupt-controller/sh7751-intc.h

Still missing vendor prefix. This applies to all your bindings.

> 
> diff --git a/include/dt-bindings/interrupt-controller/sh7751-intc.h b/include/dt-bindings/interrupt-controller/sh7751-intc.h
> new file mode 100644
> index 000000000000..5783ec72d70f
> --- /dev/null
> +++ b/include/dt-bindings/interrupt-controller/sh7751-intc.h
> @@ -0,0 +1,21 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> + *
> + * SH3/4 INTC EVT - IRQ conversion
> + */
> +
> +#ifndef __DT_BINDINGS_RENESAS_SH7751_INTC
> +#define __DT_BINDINGS_RENESAS_SH7751_INTC
> +
> +#define evt2irq(evt)		((evt) >> 5)

Still not a binding.

> +
> +#define IPRA			0
> +#define IPRB			4
> +#define IPRC			8
> +#define IPRD			12
> +#define INTPRI00		256
> +#define IPR_B12			12
> +#define IPR_B8			8
> +#define IPR_B4			4
> +#define IPR_B0			0

Neither these. Your commit msg says these are register values, so not
bindings.


Best regards,
Krzysztof

[DO NOT MERGE v5 05/37] sh: GENERIC_IRQ_CHIP support for CONFIG_OF=y

[Yoshinori Sato]

Remove unused function prototype.
Add helper update_sr_imask. use for SH7751 irq driver.
Add stub intc_finalize.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/include/asm/irq.h      | 10 ++++++++--
 arch/sh/kernel/cpu/Makefile    |  5 +----
 arch/sh/kernel/cpu/irq/imask.c | 17 +++++++++++++++++
 include/linux/sh_intc.h        |  7 ++++++-
 4 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/arch/sh/include/asm/irq.h b/arch/sh/include/asm/irq.h
index 0f384b1f45ca..c3e3db793dba 100644
--- a/arch/sh/include/asm/irq.h
+++ b/arch/sh/include/asm/irq.h
@@ -16,8 +16,8 @@
 /*
  * Simple Mask Register Support
  */
-extern void make_maskreg_irq(unsigned int irq);
-extern unsigned short *irq_mask_register;
+
+void update_sr_imask(unsigned int irq, unsigned int enable);
 
 /*
  * PINT IRQs
@@ -54,4 +54,10 @@ extern void irq_finish(unsigned int irq);
 
 #include <asm-generic/irq.h>
 
+/* SH3/4 INTC stuff */
+/* IRL level 0 - 15 */
+#define NR_IRL 15
+/* IRL0 -> IRQ16 */
+#define IRL_BASE_IRQ	16
+
 #endif /* __ASM_SH_IRQ_H */
diff --git a/arch/sh/kernel/cpu/Makefile b/arch/sh/kernel/cpu/Makefile
index e00ebf134985..ad12807fae9c 100644
--- a/arch/sh/kernel/cpu/Makefile
+++ b/arch/sh/kernel/cpu/Makefile
@@ -20,7 +20,4 @@ ifndef CONFIG_COMMON_CLK
 obj-y += clock.o
 obj-$(CONFIG_SH_CLK_CPG_LEGACY)	+= clock-cpg.o
 endif
-ifndef CONFIG_GENERIC_IRQ_CHIP
-obj-y	+= irq/
-endif
-obj-y	+= init.o fpu.o pfc.o proc.o
+obj-y	+= init.o fpu.o pfc.o proc.o irq/
diff --git a/arch/sh/kernel/cpu/irq/imask.c b/arch/sh/kernel/cpu/irq/imask.c
index 572585c3f2fd..d9a703715228 100644
--- a/arch/sh/kernel/cpu/irq/imask.c
+++ b/arch/sh/kernel/cpu/irq/imask.c
@@ -51,6 +51,7 @@ static inline void set_interrupt_registers(int ip)
 		     : "t");
 }
 
+#ifndef CONFIG_GENERIC_IRQ_CHIP
 static void mask_imask_irq(struct irq_data *data)
 {
 	unsigned int irq = data->irq;
@@ -83,3 +84,19 @@ void make_imask_irq(unsigned int irq)
 	irq_set_chip_and_handler_name(irq, &imask_irq_chip, handle_level_irq,
 				      "level");
 }
+#else
+void update_sr_imask(unsigned int irq, unsigned int enable)
+{
+	if (enable) {
+		set_bit(irq, imask_mask);
+		interrupt_priority = IMASK_PRIORITY -
+		  find_first_bit(imask_mask, IMASK_PRIORITY);
+	} else {
+		clear_bit(irq, imask_mask);
+		if (interrupt_priority < IMASK_PRIORITY - irq)
+			interrupt_priority = IMASK_PRIORITY - irq;
+	}
+	set_interrupt_registers(interrupt_priority);
+}
+EXPORT_SYMBOL(update_sr_imask);
+#endif
diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
index 27ae79191bdc..994b5b05a0d7 100644
--- a/include/linux/sh_intc.h
+++ b/include/linux/sh_intc.h
@@ -139,8 +139,13 @@ struct intc_desc symbol __initdata = {					\
 int register_intc_controller(struct intc_desc *desc);
 int intc_set_priority(unsigned int irq, unsigned int prio);
 int intc_irq_lookup(const char *chipname, intc_enum enum_id);
+#ifndef CONFIG_SH_DEVICE_TREE
 void intc_finalize(void);
-
+#else
+static inline void intc_finalize(void)
+{
+}
+#endif
 #ifdef CONFIG_INTC_USERIMASK
 int register_intc_userimask(unsigned long addr);
 #else
-- 
2.39.2

[DO NOT MERGE v5 06/37] sh: kernel/setup Update DT support.

[Yoshinori Sato]

Fix extrnal fdt initialize and bootargs.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/kernel/setup.c | 51 ++++++++++++++++++++++++++++--------------
 1 file changed, 34 insertions(+), 17 deletions(-)

diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 3d80515298d2..b299abff68e0 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -30,6 +30,7 @@
 #include <linux/memblock.h>
 #include <linux/of.h>
 #include <linux/of_fdt.h>
+#include <linux/libfdt.h>
 #include <linux/uaccess.h>
 #include <uapi/linux/mount.h>
 #include <asm/io.h>
@@ -74,7 +75,13 @@ extern int root_mountflags;
 #define RAMDISK_PROMPT_FLAG		0x8000
 #define RAMDISK_LOAD_FLAG		0x4000
 
+#if defined(CONFIG_OF) && !defined(CONFIG_USE_BUILTIN_DTB)
+#define CHOSEN_BOOTARGS
+#endif
+
+#ifndef CHOSEN_BOOTARGS
 static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
+#endif
 
 static struct resource code_resource = {
 	.name = "Kernel code",
@@ -244,18 +251,18 @@ void __init __weak plat_early_device_setup(void)
 void __ref sh_fdt_init(phys_addr_t dt_phys)
 {
 	static int done = 0;
-	void *dt_virt;
+	void *fdt;
 
 	/* Avoid calling an __init function on secondary cpus. */
 	if (done) return;
 
 #ifdef CONFIG_USE_BUILTIN_DTB
-	dt_virt = __dtb_start;
+	fdt = __dtb_start;
 #else
-	dt_virt = phys_to_virt(dt_phys);
+	fdt = phys_to_virt(dt_phys);
 #endif
 
-	if (!dt_virt || !early_init_dt_scan(dt_virt)) {
+	if (!fdt || !early_init_dt_scan(fdt)) {
 		pr_crit("Error: invalid device tree blob"
 			" at physical address %p\n", (void *)dt_phys);
 
@@ -269,8 +276,20 @@ void __ref sh_fdt_init(phys_addr_t dt_phys)
 
 void __init setup_arch(char **cmdline_p)
 {
+#ifdef CONFIG_OF_EARLY_FLATTREE
+	if (IS_ENABLED(CONFIG_USE_BUILTIN_DTB)) {
+		/* Relocate Embedded DTB */
+		unflatten_and_copy_device_tree();
+	} else if (initial_boot_params) {
+		/* Reserve external DTB area */
+		memblock_reserve(__pa(initial_boot_params),
+				 fdt_totalsize(initial_boot_params));
+		unflatten_device_tree();
+	}
+#endif
 	enable_mmu();
 
+#ifndef CONFIG_OF
 	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
 
 	printk(KERN_NOTICE "Boot params:\n"
@@ -299,19 +318,25 @@ void __init setup_arch(char **cmdline_p)
 	bss_resource.start = virt_to_phys(__bss_start);
 	bss_resource.end = virt_to_phys(__bss_stop)-1;
 
-#ifdef CONFIG_CMDLINE_OVERWRITE
-	strscpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
-#else
+#endif
+
+#ifndef CHOSEN_BOOTARGS
+#ifndef CONFIG_CMDLINE_OVERWRITE
 	strscpy(command_line, COMMAND_LINE, sizeof(command_line));
 #ifdef CONFIG_CMDLINE_EXTEND
 	strlcat(command_line, " ", sizeof(command_line));
 	strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
 #endif
-#endif
-
+#else   /* !CONFIG_CMDLINE_OVERWRITE*/
+	strscpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
+#endif  /* CONFIG_CMDLINE_OVERWRITE */
 	/* Save unparsed command line copy for /proc/cmdline */
 	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
+#else	/* CHOSEN_BOOTARGS */
+	/* Use "/chosen/bootargs" specified in devicetree. */
+	*cmdline_p = boot_command_line;
+#endif
 
 	parse_early_param();
 
@@ -322,14 +347,6 @@ void __init setup_arch(char **cmdline_p)
 	/* Let earlyprintk output early console messages */
 	sh_early_platform_driver_probe("earlyprintk", 1, 1);
 
-#ifdef CONFIG_OF_EARLY_FLATTREE
-#ifdef CONFIG_USE_BUILTIN_DTB
-	unflatten_and_copy_device_tree();
-#else
-	unflatten_device_tree();
-#endif
-#endif
-
 	paging_init();
 
 	/* Perform the machine specific initialisation */
-- 
2.39.2

Re: [DO NOT MERGE v5 06/37] sh: kernel/setup Update DT support.

[Arnd Bergmann]

On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
> Fix extrnal fdt initialize and bootargs.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  arch/sh/kernel/setup.c | 51 ++++++++++++++++++++++++++++--------------
>  1 file changed, 34 insertions(+), 17 deletions(-)
>
> diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
> index 3d80515298d2..b299abff68e0 100644
> --- a/arch/sh/kernel/setup.c
> +++ b/arch/sh/kernel/setup.c
> @@ -30,6 +30,7 @@
>  #include <linux/memblock.h>
>  #include <linux/of.h>
>  #include <linux/of_fdt.h>
> +#include <linux/libfdt.h>
>  #include <linux/uaccess.h>
>  #include <uapi/linux/mount.h>
>  #include <asm/io.h>
> @@ -74,7 +75,13 @@ extern int root_mountflags;
>  #define RAMDISK_PROMPT_FLAG		0x8000
>  #define RAMDISK_LOAD_FLAG		0x4000
> 
> +#if defined(CONFIG_OF) && !defined(CONFIG_USE_BUILTIN_DTB)
> +#define CHOSEN_BOOTARGS
> +#endif
> +
> +#ifndef CHOSEN_BOOTARGS
>  static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
> +#endif

I think an appended DTB is generally better than a built-in
one, as that allows you to still have a single kernel
image across machines and just pick the dtb when installing it.

With everything else being equal, I would suggest not
actually making this an option for new platforms.

    Arnd

[DO NOT MERGE v5 07/37] sh: Fix COMMON_CLK support in CONFIG_OF=y.

[Yoshinori Sato]

Initialize the clock and timer using the COMMON_CLK procedure.
sh's earlytimer mechanism doesn't work properly in OF,
so timer initialization is delayed.
If CONFIG_OF=y, perform the general timer initialization procedure.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boards/of-generic.c | 28 ++++------------------------
 arch/sh/kernel/time.c       | 12 ++++++++++++
 2 files changed, 16 insertions(+), 24 deletions(-)

diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
index f7f3e618e85b..f1ca5a914c11 100644
--- a/arch/sh/boards/of-generic.c
+++ b/arch/sh/boards/of-generic.c
@@ -8,6 +8,7 @@
 #include <linux/of.h>
 #include <linux/of_clk.h>
 #include <linux/of_fdt.h>
+#include <linux/of_platform.h>
 #include <linux/clocksource.h>
 #include <linux/irqchip.h>
 #include <asm/machvec.h>
@@ -98,16 +99,7 @@ static void sh_of_smp_probe(void)
 
 #endif
 
-static void noop(void)
-{
-}
-
-static int noopi(void)
-{
-	return 0;
-}
-
-static void __init sh_of_mem_reserve(void)
+static void __init sh_of_mem_init(void)
 {
 	early_init_fdt_reserve_self();
 	early_init_fdt_scan_reserved_mem();
@@ -140,25 +132,13 @@ static void __init sh_of_init_irq(void)
 	irqchip_init();
 }
 
-static int __init sh_of_clk_init(void)
-{
-#ifdef CONFIG_COMMON_CLK
-	/* Disabled pending move to COMMON_CLK framework. */
-	pr_info("SH generic board support: scanning for clk providers\n");
-	of_clk_init(NULL);
-#endif
-	return 0;
-}
-
 static struct sh_machine_vector __initmv sh_of_generic_mv = {
 	.mv_setup	= sh_of_setup,
 	.mv_name	= "devicetree", /* replaced by DT root's model */
 	.mv_irq_demux	= sh_of_irq_demux,
 	.mv_init_irq	= sh_of_init_irq,
-	.mv_clk_init	= sh_of_clk_init,
-	.mv_mode_pins	= noopi,
-	.mv_mem_init	= noop,
-	.mv_mem_reserve	= sh_of_mem_reserve,
+	.mv_mode_pins	= generic_mode_pins,
+	.mv_mem_init	= sh_of_mem_init,
 };
 
 struct sh_clk_ops;
diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
index 821a09cbd605..ce5b7c2f8628 100644
--- a/arch/sh/kernel/time.c
+++ b/arch/sh/kernel/time.c
@@ -19,7 +19,9 @@
 #include <asm/clock.h>
 #include <asm/rtc.h>
 #include <asm/platform_early.h>
+#include <linux/of_clk.h>
 
+#ifndef CONFIG_SH_DEVICE_TREE
 static void __init sh_late_time_init(void)
 {
 	/*
@@ -43,3 +45,13 @@ void __init time_init(void)
 
 	late_time_init = sh_late_time_init;
 }
+#else
+/* CONFIG_SH_DEVICE_TREE */
+void __init time_init(void)
+{
+	pr_info("SH generic board support: scanning for clk providers\n");
+
+	of_clk_init(NULL);
+	timer_probe();
+}
+#endif
-- 
2.39.2

[DO NOT MERGE v5 08/37] clocksource: sh_tmu: CLOCKSOURCE support.

[Yoshinori Sato]

Allows initialization as CLOCKSOURCE.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/clocksource/sh_tmu.c | 161 +++++++++++++++++++++++------------
 1 file changed, 106 insertions(+), 55 deletions(-)

diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c
index beffff81c00f..e4ae83c9f7d4 100644
--- a/drivers/clocksource/sh_tmu.c
+++ b/drivers/clocksource/sh_tmu.c
@@ -17,6 +17,8 @@
 #include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
@@ -65,6 +67,7 @@ struct sh_tmu_device {
 
 	bool has_clockevent;
 	bool has_clocksource;
+	const char *name;
 };
 
 #define TSTR -1 /* shared register */
@@ -148,8 +151,8 @@ static int __sh_tmu_enable(struct sh_tmu_channel *ch)
 	/* enable clock */
 	ret = clk_enable(ch->tmu->clk);
 	if (ret) {
-		dev_err(&ch->tmu->pdev->dev, "ch%u: cannot enable clock\n",
-			ch->index);
+		pr_err("%s ch%u: cannot enable clock\n",
+		       ch->tmu->name, ch->index);
 		return ret;
 	}
 
@@ -174,9 +177,10 @@ static int sh_tmu_enable(struct sh_tmu_channel *ch)
 	if (ch->enable_count++ > 0)
 		return 0;
 
-	pm_runtime_get_sync(&ch->tmu->pdev->dev);
-	dev_pm_syscore_device(&ch->tmu->pdev->dev, true);
-
+	if (ch->tmu->pdev) {
+		pm_runtime_get_sync(&ch->tmu->pdev->dev);
+		dev_pm_syscore_device(&ch->tmu->pdev->dev, true);
+	}
 	return __sh_tmu_enable(ch);
 }
 
@@ -202,8 +206,10 @@ static void sh_tmu_disable(struct sh_tmu_channel *ch)
 
 	__sh_tmu_disable(ch);
 
-	dev_pm_syscore_device(&ch->tmu->pdev->dev, false);
-	pm_runtime_put(&ch->tmu->pdev->dev);
+	if (ch->tmu->pdev) {
+		dev_pm_syscore_device(&ch->tmu->pdev->dev, false);
+		pm_runtime_put(&ch->tmu->pdev->dev);
+	}
 }
 
 static void sh_tmu_set_next(struct sh_tmu_channel *ch, unsigned long delta,
@@ -245,7 +251,7 @@ static irqreturn_t sh_tmu_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static struct sh_tmu_channel *cs_to_sh_tmu(struct clocksource *cs)
+static inline struct sh_tmu_channel *cs_to_sh_tmu(struct clocksource *cs)
 {
 	return container_of(cs, struct sh_tmu_channel, cs);
 }
@@ -292,7 +298,8 @@ static void sh_tmu_clocksource_suspend(struct clocksource *cs)
 
 	if (--ch->enable_count == 0) {
 		__sh_tmu_disable(ch);
-		dev_pm_genpd_suspend(&ch->tmu->pdev->dev);
+		if (ch->tmu->pdev)
+			dev_pm_genpd_suspend(&ch->tmu->pdev->dev);
 	}
 }
 
@@ -304,7 +311,8 @@ static void sh_tmu_clocksource_resume(struct clocksource *cs)
 		return;
 
 	if (ch->enable_count++ == 0) {
-		dev_pm_genpd_resume(&ch->tmu->pdev->dev);
+		if (ch->tmu->pdev)
+			dev_pm_genpd_resume(&ch->tmu->pdev->dev);
 		__sh_tmu_enable(ch);
 	}
 }
@@ -324,14 +332,14 @@ static int sh_tmu_register_clocksource(struct sh_tmu_channel *ch,
 	cs->mask = CLOCKSOURCE_MASK(32);
 	cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
 
-	dev_info(&ch->tmu->pdev->dev, "ch%u: used as clock source\n",
-		 ch->index);
+	pr_info("%s ch%u: used as clock source\n",
+		ch->tmu->name, ch->index);
 
 	clocksource_register_hz(cs, ch->tmu->rate);
 	return 0;
 }
 
-static struct sh_tmu_channel *ced_to_sh_tmu(struct clock_event_device *ced)
+static inline struct sh_tmu_channel *ced_to_sh_tmu(struct clock_event_device *ced)
 {
 	return container_of(ced, struct sh_tmu_channel, ced);
 }
@@ -364,8 +372,8 @@ static int sh_tmu_clock_event_set_state(struct clock_event_device *ced,
 	if (clockevent_state_oneshot(ced) || clockevent_state_periodic(ced))
 		sh_tmu_disable(ch);
 
-	dev_info(&ch->tmu->pdev->dev, "ch%u: used for %s clock events\n",
-		 ch->index, periodic ? "periodic" : "oneshot");
+	pr_info("%s ch%u: used for %s clock events\n",
+		ch->tmu->name, ch->index, periodic ? "periodic" : "oneshot");
 	sh_tmu_clock_event_start(ch, periodic);
 	return 0;
 }
@@ -403,7 +411,8 @@ static void sh_tmu_clock_event_resume(struct clock_event_device *ced)
 }
 
 static void sh_tmu_register_clockevent(struct sh_tmu_channel *ch,
-				       const char *name)
+				       const char *name,
+				       struct device_node *np)
 {
 	struct clock_event_device *ced = &ch->ced;
 	int ret;
@@ -417,30 +426,32 @@ static void sh_tmu_register_clockevent(struct sh_tmu_channel *ch,
 	ced->set_state_shutdown = sh_tmu_clock_event_shutdown;
 	ced->set_state_periodic = sh_tmu_clock_event_set_periodic;
 	ced->set_state_oneshot = sh_tmu_clock_event_set_oneshot;
-	ced->suspend = sh_tmu_clock_event_suspend;
-	ced->resume = sh_tmu_clock_event_resume;
-
-	dev_info(&ch->tmu->pdev->dev, "ch%u: used for clock events\n",
-		 ch->index);
+	if (ch->tmu->pdev) {
+		ced->suspend = sh_tmu_clock_event_suspend;
+		ced->resume = sh_tmu_clock_event_resume;
+	}
+	pr_info("%s ch%u: used for clock events\n",
+		ch->tmu->name, ch->index);
 
 	clockevents_config_and_register(ced, ch->tmu->rate, 0x300, 0xffffffff);
 
 	ret = request_irq(ch->irq, sh_tmu_interrupt,
 			  IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
-			  dev_name(&ch->tmu->pdev->dev), ch);
+			  ch->tmu->name, ch);
 	if (ret) {
-		dev_err(&ch->tmu->pdev->dev, "ch%u: failed to request irq %d\n",
-			ch->index, ch->irq);
+		pr_err("%s ch%u: failed to request irq %d\n",
+		       ch->tmu->name, ch->index, ch->irq);
 		return;
 	}
 }
 
 static int sh_tmu_register(struct sh_tmu_channel *ch, const char *name,
+			   struct device_node *np,
 			   bool clockevent, bool clocksource)
 {
 	if (clockevent) {
 		ch->tmu->has_clockevent = true;
-		sh_tmu_register_clockevent(ch, name);
+		sh_tmu_register_clockevent(ch, name, np);
 	} else if (clocksource) {
 		ch->tmu->has_clocksource = true;
 		sh_tmu_register_clocksource(ch, name);
@@ -451,7 +462,8 @@ static int sh_tmu_register(struct sh_tmu_channel *ch, const char *name,
 
 static int sh_tmu_channel_setup(struct sh_tmu_channel *ch, unsigned int index,
 				bool clockevent, bool clocksource,
-				struct sh_tmu_device *tmu)
+				struct sh_tmu_device *tmu,
+				struct device_node *np)
 {
 	/* Skip unused channels. */
 	if (!clockevent && !clocksource)
@@ -465,53 +477,59 @@ static int sh_tmu_channel_setup(struct sh_tmu_channel *ch, unsigned int index,
 	else
 		ch->base = tmu->mapbase + 8 + ch->index * 12;
 
-	ch->irq = platform_get_irq(tmu->pdev, index);
+	if (tmu->pdev)
+		ch->irq = platform_get_irq(tmu->pdev, index);
+	else
+		ch->irq = of_irq_get(np, index);
 	if (ch->irq < 0)
 		return ch->irq;
 
 	ch->cs_enabled = false;
 	ch->enable_count = 0;
 
-	return sh_tmu_register(ch, dev_name(&tmu->pdev->dev),
+	return sh_tmu_register(ch, tmu->name, np,
 			       clockevent, clocksource);
 }
 
-static int sh_tmu_map_memory(struct sh_tmu_device *tmu)
+static int sh_tmu_map_memory(struct sh_tmu_device *tmu, struct device_node *np)
 {
 	struct resource *res;
 
-	res = platform_get_resource(tmu->pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&tmu->pdev->dev, "failed to get I/O memory\n");
-		return -ENXIO;
-	}
+	if (tmu->pdev) {
+		res = platform_get_resource(tmu->pdev, IORESOURCE_MEM, 0);
+		if (!res) {
+			pr_err("sh_tmu failed to get I/O memory\n");
+			return -ENXIO;
+		}
+
+		tmu->mapbase = ioremap(res->start, resource_size(res));
+	} else
+		tmu->mapbase = of_iomap(np, 0);
 
-	tmu->mapbase = ioremap(res->start, resource_size(res));
 	if (tmu->mapbase == NULL)
 		return -ENXIO;
 
 	return 0;
 }
 
-static int sh_tmu_parse_dt(struct sh_tmu_device *tmu)
+static int sh_tmu_parse_dt(struct sh_tmu_device *tmu, struct device_node *np)
 {
-	struct device_node *np = tmu->pdev->dev.of_node;
-
 	tmu->model = SH_TMU;
 	tmu->num_channels = 3;
 
 	of_property_read_u32(np, "#renesas,channels", &tmu->num_channels);
 
 	if (tmu->num_channels != 2 && tmu->num_channels != 3) {
-		dev_err(&tmu->pdev->dev, "invalid number of channels %u\n",
-			tmu->num_channels);
+		pr_err("%s: invalid number of channels %u\n",
+		       tmu->name, tmu->num_channels);
 		return -EINVAL;
 	}
 
 	return 0;
 }
 
-static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev)
+static int sh_tmu_setup(struct sh_tmu_device *tmu,
+			struct platform_device *pdev, struct device_node *np)
 {
 	unsigned int i;
 	int ret;
@@ -520,8 +538,13 @@ static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev)
 
 	raw_spin_lock_init(&tmu->lock);
 
-	if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) {
-		ret = sh_tmu_parse_dt(tmu);
+	if (pdev)
+		tmu->name = dev_name(&pdev->dev);
+	else
+		tmu->name = of_node_full_name(np);
+
+	if (IS_ENABLED(CONFIG_OF) && np) {
+		ret = sh_tmu_parse_dt(tmu, np);
 		if (ret < 0)
 			return ret;
 	} else if (pdev->dev.platform_data) {
@@ -531,14 +554,17 @@ static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev)
 		tmu->model = id->driver_data;
 		tmu->num_channels = hweight8(cfg->channels_mask);
 	} else {
-		dev_err(&tmu->pdev->dev, "missing platform data\n");
+		pr_err("%s missing platform data\n", tmu->name);
 		return -ENXIO;
 	}
 
 	/* Get hold of clock. */
-	tmu->clk = clk_get(&tmu->pdev->dev, "fck");
+	if (pdev)
+		tmu->clk = clk_get(&tmu->pdev->dev, "fck");
+	else
+		tmu->clk = of_clk_get(np, 0);
 	if (IS_ERR(tmu->clk)) {
-		dev_err(&tmu->pdev->dev, "cannot get clock\n");
+		pr_err("%s: cannot get clock\n", tmu->name);
 		return PTR_ERR(tmu->clk);
 	}
 
@@ -555,9 +581,9 @@ static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev)
 	clk_disable(tmu->clk);
 
 	/* Map the memory resource. */
-	ret = sh_tmu_map_memory(tmu);
+	ret = sh_tmu_map_memory(tmu, np);
 	if (ret < 0) {
-		dev_err(&tmu->pdev->dev, "failed to remap I/O memory\n");
+		pr_err("%s: failed to remap I/O memory\n", tmu->name);
 		goto err_clk_unprepare;
 	}
 
@@ -575,12 +601,12 @@ static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev)
 	 */
 	for (i = 0; i < tmu->num_channels; ++i) {
 		ret = sh_tmu_channel_setup(&tmu->channels[i], i,
-					   i == 0, i == 1, tmu);
+					   i == 0, i == 1, tmu, np);
 		if (ret < 0)
 			goto err_unmap;
 	}
-
-	platform_set_drvdata(pdev, tmu);
+	if (pdev)
+		platform_set_drvdata(pdev, tmu);
 
 	return 0;
 
@@ -594,6 +620,7 @@ static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev)
 	return ret;
 }
 
+#ifndef CONFIG_SH_DEVICE_TREE
 static int sh_tmu_probe(struct platform_device *pdev)
 {
 	struct sh_tmu_device *tmu = platform_get_drvdata(pdev);
@@ -613,7 +640,7 @@ static int sh_tmu_probe(struct platform_device *pdev)
 	if (tmu == NULL)
 		return -ENOMEM;
 
-	ret = sh_tmu_setup(tmu, pdev);
+	ret = sh_tmu_setup(tmu, pdev, pdev->dev.of_node);
 	if (ret) {
 		kfree(tmu);
 		pm_runtime_idle(&pdev->dev);
@@ -631,7 +658,26 @@ static int sh_tmu_probe(struct platform_device *pdev)
 
 	return 0;
 }
+#else
+static int __init sh_tmu_of_register(struct device_node *np)
+{
+	struct sh_tmu_device *tmu;
+	int ret;
+
+	tmu = kzalloc(sizeof(*tmu), GFP_KERNEL);
+	if (tmu == NULL)
+		return -ENOMEM;
+
+	ret = sh_tmu_setup(tmu, NULL, np);
+	if (ret) {
+		kfree(tmu);
+		pr_warn("%pOF: Timer register failed (%d)", np, ret);
+	}
+	return ret;
+}
+#endif
 
+#ifndef CONFIG_SH_DEVICE_TREE
 static const struct platform_device_id sh_tmu_id_table[] = {
 	{ "sh-tmu", SH_TMU },
 	{ "sh-tmu-sh3", SH_TMU_SH3 },
@@ -665,12 +711,17 @@ static void __exit sh_tmu_exit(void)
 	platform_driver_unregister(&sh_tmu_device_driver);
 }
 
+subsys_initcall(sh_tmu_init);
+module_exit(sh_tmu_exit);
+#endif
+
 #ifdef CONFIG_SUPERH
+#ifdef CONFIG_SH_DEVICE_TREE
+TIMER_OF_DECLARE(sh_tmu, "renesas,tmu", sh_tmu_of_register);
+#else
 sh_early_platform_init("earlytimer", &sh_tmu_device_driver);
 #endif
-
-subsys_initcall(sh_tmu_init);
-module_exit(sh_tmu_exit);
+#endif
 
 MODULE_AUTHOR("Magnus Damm");
 MODULE_DESCRIPTION("SuperH TMU Timer Driver");
-- 
2.39.2

[DO NOT MERGE v5 09/37] dt-bindings: timer: renesas,tmu: add renesas,tmu-sh7750

[Yoshinori Sato]

Add SH7750 TMU entry.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../devicetree/bindings/timer/renesas,tmu.yaml        | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
index a67e427a9e7e..925c2a691b25 100644
--- a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
+++ b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
@@ -21,6 +21,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,tmu-sh7750   # SH7750
           - renesas,tmu-r8a7740  # R-Mobile A1
           - renesas,tmu-r8a774a1 # RZ/G2M
           - renesas,tmu-r8a774b1 # RZ/G2N
@@ -46,7 +47,14 @@ properties:
 
   interrupts:
     minItems: 2
-    maxItems: 3
+    maxItems: 4
+
+  interrupt-names:
+    items:
+      - const: tuni0
+      - const: tuni1
+      - const: tuni2
+      - const: ticpi2
 
   clocks:
     maxItems: 1
@@ -84,6 +92,7 @@ if:
             - renesas,tmu-r8a7740
             - renesas,tmu-r8a7778
             - renesas,tmu-r8a7779
+            - renesas,tmu-sh7750
 then:
   required:
     - resets
-- 
2.39.2

Re: [DO NOT MERGE v5 09/37] dt-bindings: timer: renesas,tmu: add renesas,tmu-sh7750

[Geert Uytterhoeven]

Hi Sato-san,

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> Add SH7750 TMU entry.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> +++ b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> @@ -21,6 +21,7 @@ properties:
>    compatible:
>      items:
>        - enum:
> +          - renesas,tmu-sh7750   # SH7750

Please preserve alphabetical sort order.

>            - renesas,tmu-r8a7740  # R-Mobile A1
>            - renesas,tmu-r8a774a1 # RZ/G2M
>            - renesas,tmu-r8a774b1 # RZ/G2N

The rest LGTM.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [DO NOT MERGE v5 09/37] dt-bindings: timer: renesas,tmu: add renesas,tmu-sh7750

[Krzysztof Kozlowski]

On 05/12/2023 10:45, Yoshinori Sato wrote:
> diff --git a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> index a67e427a9e7e..925c2a691b25 100644
> --- a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> +++ b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> @@ -21,6 +21,7 @@ properties:
>    compatible:
>      items:
>        - enum:
> +          - renesas,tmu-sh7750   # SH7750

Please keep alphabetical order.

>            - renesas,tmu-r8a7740  # R-Mobile A1
>            - renesas,tmu-r8a774a1 # RZ/G2M
>            - renesas,tmu-r8a774b1 # RZ/G2N
> @@ -46,7 +47,14 @@ properties:
>  
>    interrupts:
>      minItems: 2
> -    maxItems: 3
> +    maxItems: 4

You need to constrain in allOf:if:then: existing and new variants. Old
did not have 4 interrupts.

Best regards,
Krzysztof

[DO NOT MERGE v5 10/37] sh: Common PCI Framework driver support.

[Yoshinori Sato]

Add New OF based PCI Host driver.
This driver conflicts some point in legacy PCI driver.
To resolve the conflict, I made some changes to the legacy driver.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/drivers/pci/pci.c |  6 ------
 arch/sh/include/asm/io.h  |  6 ++++++
 arch/sh/include/asm/pci.h |  4 ++++
 arch/sh/kernel/iomap.c    | 24 ++++++++++++++++++++++++
 4 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index a3903304f33f..61a19c2c9014 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -286,12 +286,6 @@ void __iomem *__pci_ioport_map(struct pci_dev *dev,
 	return (void __iomem *)(chan->io_map_base + port);
 }
 
-void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
-{
-	iounmap(addr);
-}
-EXPORT_SYMBOL(pci_iounmap);
-
 #endif /* CONFIG_GENERIC_IOMAP */
 
 EXPORT_SYMBOL(PCIBIOS_MIN_IO);
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index ac521f287fa5..efea1bd0a681 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -20,6 +20,7 @@
 #include <asm/page.h>
 #include <linux/pgtable.h>
 #include <asm-generic/iomap.h>
+#include <linux/ioport.h>
 
 #define __IO_PREFIX     generic
 #include <asm/io_generic.h>
@@ -317,4 +318,9 @@ unsigned long long poke_real_address_q(unsigned long long addr,
 int valid_phys_addr_range(phys_addr_t addr, size_t size);
 int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
 
+#if defined(CONFIG_PCI) && !defined(CONFIG_GENERIC_IOMAP)
+#define pci_remap_iospace pci_remap_iospace
+int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr);
+#endif
+
 #endif /* __ASM_SH_IO_H */
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index 54c30126ea17..92b3bd604319 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -2,6 +2,7 @@
 #ifndef __ASM_SH_PCI_H
 #define __ASM_SH_PCI_H
 
+#ifndef CONFIG_SH_DEVICE_TREE
 /* Can be used to override the logic in pci_scan_bus for skipping
    already-configured bus numbers - to be used for buggy BIOSes
    or architectures with incomplete PCI setup by the loader */
@@ -88,4 +89,7 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 	return hose->need_domain_info;
 }
 
+#else /* CONFIG_SH_DEVICE_TREE */
+#include <asm-generic/pci.h>
+#endif
 #endif /* __ASM_SH_PCI_H */
diff --git a/arch/sh/kernel/iomap.c b/arch/sh/kernel/iomap.c
index 0a0dff4e66de..ec68ce4e4a17 100644
--- a/arch/sh/kernel/iomap.c
+++ b/arch/sh/kernel/iomap.c
@@ -160,3 +160,27 @@ void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
 	mmio_outsl(addr, src, count);
 }
 EXPORT_SYMBOL(iowrite32_rep);
+
+#if defined(CONFIG_PCI) && !defined(CONFIG_GENERIC_IOMAP)
+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+	iounmap(addr);
+}
+EXPORT_SYMBOL(pci_iounmap);
+
+int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr)
+{
+	unsigned long vaddr = res->start;
+
+	if (!(res->flags & IORESOURCE_IO))
+		return -EINVAL;
+
+	if (res->end > IO_SPACE_LIMIT)
+		return -EINVAL;
+
+	__set_io_port_base(phys_addr);
+	return ioremap_page_range(vaddr, vaddr + resource_size(res), phys_addr,
+				  pgprot_device(PAGE_KERNEL));
+}
+EXPORT_SYMBOL(pci_remap_iospace);
+#endif
-- 
2.39.2

Re: [DO NOT MERGE v5 10/37] sh: Common PCI Framework driver support.

[Arnd Bergmann]

On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
> +
> +#if defined(CONFIG_PCI) && !defined(CONFIG_GENERIC_IOMAP)
> +void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
> +{
> +	iounmap(addr);
> +}
> +EXPORT_SYMBOL(pci_iounmap);

This definition does not work for addresses that are
returned by ioport_map(), include pci_iomap() on
IORESOURCE_IO.  However, the definition in lib/pci_iomap.c
should work fine, you just need to #define ARCH_WANTS_GENERIC_PCI_IOUNMAP
to get that.

      Arnd

[DO NOT MERGE v5 11/37] pci: pci-sh7751: Add SH7751 PCI driver

[Yoshinori Sato]

Renesas SH7751 CPU Internal PCI Controller driver.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/pci/controller/Kconfig      |   9 +
 drivers/pci/controller/Makefile     |   1 +
 drivers/pci/controller/pci-sh7751.c | 302 ++++++++++++++++++++++++++++
 drivers/pci/controller/pci-sh7751.h |  76 +++++++
 4 files changed, 388 insertions(+)
 create mode 100644 drivers/pci/controller/pci-sh7751.c
 create mode 100644 drivers/pci/controller/pci-sh7751.h

diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index e534c02ee34f..a2fd917a2e03 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -353,6 +353,15 @@ config PCIE_XILINX_CPM
 	  Say 'Y' here if you want kernel support for the
 	  Xilinx Versal CPM host bridge.
 
+config PCI_SH7751
+	bool "Renesas SH7751 PCI controller"
+	depends on OF
+	depends on CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R || COMPILE_TEST
+	select PCI_HOST_COMMON
+	help
+	  Say 'Y' here if you want kernel to support the Renesas SH7751 PCI
+	  Host Bridge driver.
+
 source "drivers/pci/controller/cadence/Kconfig"
 source "drivers/pci/controller/dwc/Kconfig"
 source "drivers/pci/controller/mobiveil/Kconfig"
diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
index f2b19e6174af..aa97e5d74e58 100644
--- a/drivers/pci/controller/Makefile
+++ b/drivers/pci/controller/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
 obj-$(CONFIG_PCIE_HISI_ERR) += pcie-hisi-error.o
 obj-$(CONFIG_PCIE_APPLE) += pcie-apple.o
 obj-$(CONFIG_PCIE_MT7621) += pcie-mt7621.o
+obj-$(CONFIG_PCI_SH7751) += pci-sh7751.o
 
 # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
 obj-y				+= dwc/
diff --git a/drivers/pci/controller/pci-sh7751.c b/drivers/pci/controller/pci-sh7751.c
new file mode 100644
index 000000000000..6bc022ccf64c
--- /dev/null
+++ b/drivers/pci/controller/pci-sh7751.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SH7751 PCI driver
+ * Copyright (C) 2023 Yoshinori Sato
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_pci.h>
+#include <linux/of_platform.h>
+#include <linux/pci-ecam.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/pci.h>
+#include <asm/addrspace.h>
+#include "pci-sh7751.h"
+
+#define pcic_writel(val, base, reg) __raw_writel(val, base + (reg))
+#define pcic_readl(base, reg) __raw_readl(base + (reg))
+
+/*
+ * PCIC fixups
+ */
+
+static inline void pci_fixup_write_regs(struct device_node *np,
+					const char *prop,
+					void __iomem *pcic, int reg,
+					int nr_regs)
+{
+	int i;
+	u32 val;
+
+	for (i = 0; i < nr_regs; i++) {
+		if (of_property_read_u32_index(np, prop, i, &val))
+			pcic_writel(val, pcic, reg + i * 4);
+	}
+}
+
+#define SH7751_NUM_CONFIG 18
+static void pcic_fixups(struct device_node *np,
+		       void __iomem *pcic, void __iomem *bsc)
+{
+	unsigned long bcr1, mcr;
+	u32 val;
+	int i, r;
+	u32 pci_config[SH7751_NUM_CONFIG * 2];
+
+	const struct {
+		const char *name;
+		int reg;
+		int nr;
+	} reg_prop[] = {
+		/*
+		 *  The bus timing uses the bootloader settings,
+		 *  so do not change them here.
+		 */
+		{ "renesas,intm",  PCIC_PCIINTM,  1, },
+		{ "renesas,aintm", PCIC_PCIAINTM, 1, },
+		{ "renesas,lsr",   PCIC_PCILSR0,  2, },
+		{ "renesas,lar",   PCIC_PCILAR0,  2, },
+		{ "renesas,dmabt", PCIC_PCIDMABT, 1, },
+		{ "renesas,pintm", PCIC_PCIPINTM, 1, },
+	};
+
+	if (of_property_read_u32(np, "renesas,bcr1", &val)) {
+		bcr1 = ioread32(bsc + BSC_BCR1);
+		bcr1 |= val;
+		pcic_writel(bcr1, pcic, PCIC_PCIBCR1);
+	}
+	if (of_property_read_u32(np, "renesas,clkr", &val)) {
+		val = (val & 0xffffff);
+		pcic_writel(PCIC_WE_KEY | val, pcic, PCIC_PCICLKR);
+	}
+	for (i = 0; i < ARRAY_SIZE(reg_prop); i++)
+		pci_fixup_write_regs(np, reg_prop[i].name, pcic,
+				     reg_prop[i].reg, reg_prop[i].nr);
+
+	memset(pci_config, 0, sizeof(pci_config));
+	if (of_property_read_u32_array(np, "renesas,config",
+				       pci_config, SH7751_NUM_CONFIG) == 0) {
+		for (i = 0; i < SH7751_NUM_CONFIG; i++) {
+			r = pci_config[i * 2];
+			/* CONFIG0 is read-only, so make it a sentinel. */
+			if (r == 0)
+				break;
+			pcic_writel(pci_config[i * 2 + 1], pcic, r * 4);
+		}
+	}
+
+	if (of_property_read_u32(np, "renesas,mcrmask", &val)) {
+		mcr = ioread32(bsc + BSC_MCR);
+		mcr &= ~val;
+		pcic_writel(mcr, pcic, PCIC_PCIMCR);
+	}
+}
+
+/*
+ * We need to avoid collisions with `mirrored' VGA ports
+ * and other strange ISA hardware, so we always want the
+ * addresses to be allocated in the 0x000-0x0ff region
+ * modulo 0x400.
+ */
+#define IO_REGION_BASE 0x1000
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
+				resource_size_t size, resource_size_t align)
+{
+	resource_size_t start = res->start;
+
+	if (res->flags & IORESOURCE_IO) {
+		if (start < PCIBIOS_MIN_IO + IO_REGION_BASE)
+			start = PCIBIOS_MIN_IO + IO_REGION_BASE;
+
+		/*
+		 * Put everything into 0x00-0xff region modulo 0x400.
+		 */
+		if (start & 0x300)
+			start = (start + 0x3ff) & ~0x3ff;
+	}
+
+	return start;
+}
+
+static int setup_pci_bsc(struct device *dev, void __iomem *pcic,
+			 void __iomem *bsc, unsigned int area, bool bcr3)
+{
+	unsigned long word;
+
+	word = __raw_readl(bsc + BSC_BCR1);
+	/* check BCR for SDRAM in area */
+	if (((word >> area) & 1) == 0) {
+		dev_info(dev, "PCI: Area %d is not configured for SDRAM. BCR1=0x%lx\n",
+		       area, word);
+		return 0;
+	}
+	pcic_writel(word, pcic, PCIC_PCIBCR1);
+
+	word = __raw_readw(bsc + BSC_BCR2);
+	/* check BCR2 for 32bit SDRAM interface*/
+	if (((word >> (area << 1)) & 0x3) != 0x3) {
+		dev_info(dev, "PCI: Area %d is not 32 bit SDRAM. BCR2=0x%lx\n",
+			area, word);
+		return 0;
+	}
+	pcic_writel(word, pcic, PCIC_PCIBCR2);
+
+	if (bcr3) {
+		/* BCR3 have only SH7751R */
+		word = __raw_readw(bsc + BSC_BCR3);
+		pcic_writel(word, pcic, PCIC_PCIBCR3);
+	}
+
+	return 1;
+}
+
+static void set_pci_window(void __iomem *pcic, int no, u32 *memory)
+{
+	u32 word;
+
+	word = memory[1] - 1;
+	pcic_writel(word, pcic, PCIC_PCILSR0 + no * 4);
+	word = P2SEGADDR(memory[0]);
+	pcic_writel(word, pcic, PCIC_PCILAR0 + no * 4);
+	pcic_writel(word, pcic, PCI_BASE_ADDRESS_1 + no * 4);
+}
+
+static int sh7751_pci_probe(struct platform_device *pdev)
+{
+	struct resource *res, *bscres;
+	void __iomem *pcic;
+	void __iomem *bsc;
+	u32 memory[2];
+	u16 vid, did;
+	u32 word;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (IS_ERR(res))
+		return PTR_ERR(res);
+	pcic = (void __iomem *)res->start;
+
+	bscres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	bsc = devm_ioremap_resource(&pdev->dev, bscres);
+	if (IS_ERR(bsc))
+		return PTR_ERR(bsc);
+
+	if (of_property_read_u32_array(pdev->dev.of_node,
+				       "renesas,memory", memory, 2) < 0) {
+		/*
+		 * If no memory range is specified,
+		 *  the entire main memory will be targeted for DMA.
+		 */
+		memory[0] = memory_start;
+		memory[1] = memory_end - memory_start;
+	}
+
+	/* check for SH7751/SH7751R hardware */
+	word = pcic_readl(pcic, PCI_VENDOR_ID);
+	vid = word & 0xffff;
+	did = word >> 16;
+	if ((vid != PCI_VENDOR_ID_HITACHI) ||
+	    ((did != PCI_DEVICE_ID_SH7751) &&
+	     (did != PCI_DEVICE_ID_SH7751R))) {
+		dev_warn(&pdev->dev, "PCI: This is not an SH7751(R)\n");
+		return -ENODEV;
+	}
+	dev_info(&pdev->dev, "PCI core found at %pR\n", res);
+
+	/* Set the BCR's to enable PCI access */
+	word = __raw_readl(bsc + BSC_BCR1);
+	word |= BSC_BCR1_BRQEN;
+	__raw_writel(word, bsc + BSC_BCR1);
+
+	/* Turn the clocks back on (not done in reset)*/
+	pcic_writel(PCIC_WE_KEY | 0, pcic, PCIC_PCICLKR);
+	/* Clear Powerdown IRQ's (not done in reset) */
+	word = PCIC_PCIPINT_D3 | PCIC_PCIPINT_D0;
+	pcic_writel(word, pcic, PCIC_PCIPINT);
+
+	/* set the command/status bits to:
+	 * Wait Cycle Control + Parity Enable + Bus Master +
+	 * Mem space enable
+	 */
+	word = PCI_COMMAND_WAIT | PCI_COMMAND_PARITY |
+	       PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pcic_writel(word, pcic, PCI_COMMAND);
+
+	/* define this host as the host bridge */
+	word = PCI_BASE_CLASS_BRIDGE << 24;
+	pcic_writel(word, pcic, PCI_CLASS_REVISION);
+
+	/* Set IO and Mem windows to local address
+	 * Make PCI and local address the same for easy 1 to 1 mapping
+	 */
+	set_pci_window(pcic, 0, memory);
+	pcic_writel(0, pcic, PCIC_PCIIOBR);
+
+	/* check BCR for SDRAM in specified area. And setup PCI BSC. */
+	setup_pci_bsc(&pdev->dev, pcic, bsc, (memory[0] >> 26) & 0x07,
+		      did == PCI_DEVICE_ID_SH7751R);
+
+	/* configure the wait control registers */
+	word = __raw_readl(bsc + BSC_WCR1);
+	pcic_writel(word, pcic, PCIC_PCIWCR1);
+	word = __raw_readl(bsc + BSC_WCR2);
+	pcic_writel(word, pcic, PCIC_PCIWCR2);
+	word = __raw_readl(bsc + BSC_WCR3);
+	pcic_writel(word, pcic, PCIC_PCIWCR3);
+	word = __raw_readl(bsc + BSC_MCR);
+	pcic_writel(word, pcic, PCIC_PCIMCR);
+
+	/* Override register setting */
+	pcic_fixups(pdev->dev.of_node, pcic, bsc);
+
+	/* SH7751 init done, set central function init complete */
+	/* use round robin mode to stop a device starving/overrunning */
+	word = PCIC_PCICR_CFIN | PCIC_PCICR_ARBM;
+	pcic_writel(PCIC_WE_KEY | word, pcic, PCIC_PCICR);
+
+	return pci_host_common_probe(pdev);
+}
+
+/*
+ * Direct access to PCI hardware...
+ */
+#define CONFIG_CMD(bus, devfn, where) \
+	(0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3))
+
+static void __iomem *sh4_pci_map_bus(struct pci_bus *bus,
+				     unsigned int devfn, int where)
+{
+	struct pci_config_window *cfg = bus->sysdata;
+	void __iomem *pcic = (void __iomem *)cfg->res.start;
+
+	pcic_writel(CONFIG_CMD(bus, devfn, where), pcic, PCIC_PCIPAR);
+	return pcic + PCIC_PCIPDR;
+}
+
+static const struct pci_ecam_ops pci_sh7751_bus_ops = {
+	.pci_ops	= {
+		.map_bus = sh4_pci_map_bus,
+		.read    = pci_generic_config_read32,
+		.write   = pci_generic_config_write32,
+	}
+};
+
+static const struct of_device_id sh7751_pci_of_match[] = {
+	{ .compatible = "renesas,sh7751-pci",
+	  .data = &pci_sh7751_bus_ops },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sh7751_pci_of_match);
+
+static struct platform_driver sh7751_pci_driver = {
+	.driver = {
+		.name = "sh7751-pci",
+		.of_match_table = sh7751_pci_of_match,
+	},
+	.probe = sh7751_pci_probe,
+};
+module_platform_driver(sh7751_pci_driver);
+
+MODULE_DESCRIPTION("SH7751 PCI driver");
diff --git a/drivers/pci/controller/pci-sh7751.h b/drivers/pci/controller/pci-sh7751.h
new file mode 100644
index 000000000000..540cee7095c6
--- /dev/null
+++ b/drivers/pci/controller/pci-sh7751.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * SH7751 PCI driver define
+ * Copyright (C) 2023 Yoshinori Sato
+ */
+
+#ifndef _PCI_SH7751_H_
+#define _PCI_SH7751_H_
+
+/* PCICR and PCICLKCR write enable magic key */
+#define PCIC_WE_KEY		(0xa5 << 24)
+
+/* PCIC registers */
+/* 0x0000 - 0x00ff mapped to PCI device configuration space */
+#define PCIC_PCICR		0x100	/* PCI Control Register */
+#define PCIC_PCICR_TRSB		BIT(9)	/* Target Read Single */
+#define PCIC_PCICR_BSWP		BIT(8)	/* Target Byte Swap */
+#define PCIC_PCICR_PLUP		BIT(7)	/* Enable PCI Pullup */
+#define PCIC_PCICR_ARBM		BIT(6)	/* PCI Arbitration Mode */
+#define PCIC_PCICR_MD10		BIT(5)	/* MD10 status */
+#define PCIC_PCICR_MD9		BIT(4)	/* MD9 status */
+#define PCIC_PCICR_SERR		BIT(3)	/* SERR output assert */
+#define PCIC_PCICR_INTA		BIT(2)	/* INTA output assert */
+#define PCIC_PCICR_PRST		BIT(1)	/* PCI Reset Assert */
+#define PCIC_PCICR_CFIN		BIT(0)	/* Central Fun. Init Done */
+
+#define PCIC_PCILSR0		0x104	/* PCI Local Space Register0 */
+#define PCIC_PCILSR1		0x108	/* PCI Local Space Register1 */
+#define PCIC_PCILAR0		0x10c	/* PCI Local Addr Register1 */
+#define PCIC_PCILAR1		0x110	/* PCI Local Addr Register1 */
+#define PCIC_PCIINT		0x114	/* PCI Interrupt Register */
+#define PCIC_PCIINTM		0x118	/* PCI Interrupt Mask */
+#define PCIC_PCIALR		0x11c	/* Error Address Register */
+#define PCIC_PCICLR		0x120	/* Error Command/Data */
+#define PCIC_PCIAINT		0x130	/* Arbiter Interrupt Register */
+#define PCIC_PCIAINTM		0x134	/* Arbiter Int. Mask Register */
+#define PCIC_PCIBMLR		0x138	/* Error Bus Master Register */
+#define PCIC_PCIDMABT		0x140	/* DMA Transfer Arb. Register */
+#define PCIC_PCIPAR		0x1c0	/* PIO Address Register */
+#define PCIC_PCIMBR		0x1c4	/* Memory Base Address */
+#define PCIC_PCIIOBR		0x1c8	/* I/O Base Address Register */
+
+#define PCIC_PCIPINT		0x1cc	/* Power Mgmnt Int. Register */
+#define PCIC_PCIPINT_D3		BIT(1)	/* D3 Pwr Mgmt. Interrupt */
+#define PCIC_PCIPINT_D0		BIT(0)	/* D0 Pwr Mgmt. Interrupt */
+
+#define PCIC_PCIPINTM		0x1d0	/* Power Mgmnt Mask Register */
+#define PCIC_PCICLKR		0x1d4	/* Clock Ctrl. Register */
+#define PCIC_PCIBCR1		0x1e0	/* Memory BCR1 Register */
+#define PCIC_PCIBCR2		0x1e4	/* Memory BCR2 Register */
+#define PCIC_PCIWCR1		0x1e8	/* Wait Control 1 Register */
+#define PCIC_PCIWCR2		0x1ec	/* Wait Control 2 Register */
+#define PCIC_PCIWCR3		0x1f0	/* Wait Control 3 Register */
+#define PCIC_PCIMCR		0x1f4	/* Memory Control Register */
+#define PCIC_PCIBCR3		0x1f8	/* Memory BCR3 Register */
+#define PCIC_PCIPDR		0x220	/* Port IO Data Register */
+
+/* PCI IDs */
+/* Hitachi is the company that led to Renesas. */
+/* The SH7751 was designed by Hitachi, so it has a Hitachi ID. */
+#define PCI_VENDOR_ID_HITACHI	0x1054
+#define PCI_DEVICE_ID_SH7751	0x3505
+#define PCI_DEVICE_ID_SH7751R	0x350e
+
+/* BSC registers */
+/* Copy BSC setting to PCI BSC */
+#define BSC_BCR1		0x0000
+#define BSC_BCR1_BRQEN		BIT(19)
+#define BSC_BCR2		0x0004
+#define BSC_BCR3		0x0050
+#define BSC_WCR1		0x0008
+#define BSC_WCR2		0x000c
+#define BSC_WCR3		0x0010
+#define BSC_MCR			0x0014
+
+#endif /* _PCI_SH7751_H_ */
-- 
2.39.2

Re: [DO NOT MERGE v5 11/37] pci: pci-sh7751: Add SH7751 PCI driver

[Arnd Bergmann]

On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:

> +#include <asm/addrspace.h>
> +#include "pci-sh7751.h"
> +
> +#define pcic_writel(val, base, reg) __raw_writel(val, base + (reg))
> +#define pcic_readl(base, reg) __raw_readl(base + (reg))

__raw_writel()/__raw_readl() has a number of problems with
atomicity (the compiler may split or merge pointer
dereferences), barriers and endianess. You should normally
always use readl()/writel() instead.

> +	memset(pci_config, 0, sizeof(pci_config));
> +	if (of_property_read_u32_array(np, "renesas,config",
> +				       pci_config, SH7751_NUM_CONFIG) == 0) {
> +		for (i = 0; i < SH7751_NUM_CONFIG; i++) {
> +			r = pci_config[i * 2];
> +			/* CONFIG0 is read-only, so make it a sentinel. */
> +			if (r == 0)
> +				break;
> +			pcic_writel(pci_config[i * 2 + 1], pcic, r * 4);
> +		}
> +	}

the config property seems a little too specific to this
implementation of the driver. Instead of encoding register
values in DT, I think these should either be described
in named properties where needed, or hardcoded in the driver
if there is only one sensible value.

> +/*
> + * We need to avoid collisions with `mirrored' VGA ports
> + * and other strange ISA hardware, so we always want the
> + * addresses to be allocated in the 0x000-0x0ff region
> + * modulo 0x400.
> + */
> +#define IO_REGION_BASE 0x1000
> +resource_size_t pcibios_align_resource(void *data, const struct 
> resource *res,
> +				resource_size_t size, resource_size_t align)
> +{

You can't have these generic functions in a driver, as that
prevents you from building more than one such driver.

The logic you have here is neither architecture nor
driver specific.

> +static int sh7751_pci_probe(struct platform_device *pdev)
> +{
> +	struct resource *res, *bscres;
> +	void __iomem *pcic;
> +	void __iomem *bsc;
> +	u32 memory[2];
> +	u16 vid, did;
> +	u32 word;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (IS_ERR(res))
> +		return PTR_ERR(res);
> +	pcic = (void __iomem *)res->start;

This cast is invalid, as res->start is a physical address
that you would need to ioremap() to turn into an __iomem
pointer.

> +	bscres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> +	bsc = devm_ioremap_resource(&pdev->dev, bscres);
> +	if (IS_ERR(bsc))
> +		return PTR_ERR(bsc);
> +
> +	if (of_property_read_u32_array(pdev->dev.of_node,
> +				       "renesas,memory", memory, 2) < 0) {
> +		/*
> +		 * If no memory range is specified,
> +		 *  the entire main memory will be targeted for DMA.
> +		 */
> +		memory[0] = memory_start;
> +		memory[1] = memory_end - memory_start;
> +	}

There is a generic "dma-ranges" proerty for describing
which memory is visible by a bus.

> diff --git a/drivers/pci/controller/pci-sh7751.h 
> b/drivers/pci/controller/pci-sh7751.h
> new file mode 100644
> index 000000000000..540cee7095c6
> --- /dev/null
> +++ b/drivers/pci/controller/pci-sh7751.h
> @@ -0,0 +1,76 @@

If the header is only included from one file, just removed
it and add the register definitions to the driver directly.

     Arnd

Re: [DO NOT MERGE v5 11/37] pci: pci-sh7751: Add SH7751 PCI driver

[Geert Uytterhoeven]

Hi Arnd,

On Tue, Dec 5, 2023 at 2:26 PM Arnd Bergmann <arnd@arndb.de> wrote:
> On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
> > +     bscres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> > +     bsc = devm_ioremap_resource(&pdev->dev, bscres);
> > +     if (IS_ERR(bsc))
> > +             return PTR_ERR(bsc);
> > +
> > +     if (of_property_read_u32_array(pdev->dev.of_node,
> > +                                    "renesas,memory", memory, 2) < 0) {
> > +             /*
> > +              * If no memory range is specified,
> > +              *  the entire main memory will be targeted for DMA.
> > +              */
> > +             memory[0] = memory_start;
> > +             memory[1] = memory_end - memory_start;
> > +     }
>
> There is a generic "dma-ranges" proerty for describing
> which memory is visible by a bus.

I was just going to give that comment on the bindings patch ;-)

> > --- /dev/null
> > +++ b/drivers/pci/controller/pci-sh7751.h
> > @@ -0,0 +1,76 @@
>
> If the header is only included from one file, just removed
> it and add the register definitions to the driver directly.

$ git grep pci-sh7751.h
arch/sh/drivers/pci/pci-sh4.h:#include "pci-sh7751.h"
drivers/pci/controller/pci-sh7751.c:#include "pci-sh7751.h"

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [DO NOT MERGE v5 11/37] pci: pci-sh7751: Add SH7751 PCI driver

[Linus Walleij]

On Tue, Dec 5, 2023 at 2:26 PM Arnd Bergmann <arnd@arndb.de> wrote:
> On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:

> > +     if (of_property_read_u32_array(pdev->dev.of_node,
> > +                                    "renesas,memory", memory, 2) < 0) {
> > +             /*
> > +              * If no memory range is specified,
> > +              *  the entire main memory will be targeted for DMA.
> > +              */
> > +             memory[0] = memory_start;
> > +             memory[1] = memory_end - memory_start;
> > +     }
>
> There is a generic "dma-ranges" proerty for describing
> which memory is visible by a bus.

It's really a headache to use, so I put a bit of documentation here:
https://elinux.org/Device_Tree_Usage#PCI_DMA_Address_Translation

Yoshinoro, you can look at these bindings and drivers that use
dma-ranges for help:
Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml
drivers/pci/controller/pci-ixp4xx.c
Documentation/devicetree/bindings/pci/faraday,ftpci100.yaml
drivers/pci/controller/pci-ftpci100.c

Yours,
Linus Walleij

[DO NOT MERGE v5 12/37] dt-bindings: pci: pci-sh7751: Add SH7751 PCI

[Yoshinori Sato]

Renesas SH7751 PCI Controller json-schema.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../bindings/pci/renesas,sh7751-pci.yaml      | 128 ++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/renesas,sh7751-pci.yaml

diff --git a/Documentation/devicetree/bindings/pci/renesas,sh7751-pci.yaml b/Documentation/devicetree/bindings/pci/renesas,sh7751-pci.yaml
new file mode 100644
index 000000000000..c71ed56b7210
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/renesas,sh7751-pci.yaml
@@ -0,0 +1,128 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/renesas,sh7751-pci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SH7751 PCI Host controller
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,sh7751-pci
+
+  reg:
+    minItems: 2
+    maxItems: 2
+
+  "#interrupt-cells":
+    const: 1
+
+  "#address-cells":
+    const: 3
+
+  "#size-cells":
+    const: 2
+
+  ranges: true
+
+  interrupt-controller: true
+
+  renesas,memory:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: |
+      PCI BMDMA src/dst memory area.
+
+  renesas,bcr1:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCIBCR1 value. This value makes add the value of BSC's BCR1.
+
+  renesas,mcrmask:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCIMCR value. This value makes clear bit in the value of BSC's MCR.
+
+  renesas,intm:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCIINTM value.
+
+  renesas,aintm:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCIIANTM value.
+
+  renesas,lsr:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCILSR0 and PCILSR1 values.
+      First word is PCILSR0, Second word is PCILSR1.
+
+  renesas,lar:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCILSA0 and PCILAR1 values.
+      First word is PCILAR0, Second word is PCILAR1.
+
+  renesas,dmabt:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCIDMABT value.
+
+  renesas,pintm:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      SH7751 PCIC PCIPINTM value.
+
+  renesas,config:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: |
+      SH7751 PCIC PCICONFIG values array. Register Number and value pair list.
+
+required:
+  - compatible
+  - reg
+  - "#interrupt-cells"
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+  - interrupt-map
+  - interrupt-map-mask
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pci@fe200000 {
+            compatible = "renesas,sh7751-pci";
+            #address-cells = <3>;
+            #size-cells = <2>;
+            #interrupt-cells = <1>;
+            device_type = "pci";
+            bus-range = <0 0>;
+            ranges = <0x02000000 0 0xfd000000 0xfd000000 0 0x01000000>,
+                     <0x01000000 0 0x00000000 0xfe240000 0 0x00040000>;
+            reg = <0xfe200000 0x0400>,
+                  <0xff800000 0x0100>;
+            interrupt-map = <0x0000 0 0 1 &julianintc 5>,
+                            <0x0000 0 0 2 &julianintc 6>,
+                            <0x0000 0 0 3 &julianintc 7>,
+                            <0x0000 0 0 4 &julianintc 8>,
+                            <0x0800 0 0 1 &julianintc 6>,
+                            <0x0800 0 0 2 &julianintc 7>,
+                            <0x0800 0 0 3 &julianintc 8>,
+                            <0x0800 0 0 4 &julianintc 5>,
+                            <0x1000 0 0 1 &julianintc 7>,
+                            <0x1000 0 0 2 &julianintc 8>,
+                            <0x1000 0 0 3 &julianintc 5>,
+                            <0x1000 0 0 4 &julianintc 6>;
+            interrupt-map-mask = <0x1800 0 0 7>;
+    };
-- 
2.39.2

Re: [DO NOT MERGE v5 12/37] dt-bindings: pci: pci-sh7751: Add SH7751 PCI

[Geert Uytterhoeven]

Hi Sato-san,

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> Renesas SH7751 PCI Controller json-schema.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

Thanks for your patch!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/renesas,sh7751-pci.yaml
> @@ -0,0 +1,128 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pci/renesas,sh7751-pci.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas SH7751 PCI Host controller
> +
> +maintainers:
> +  - Yoshinori Sato <ysato@users.sourceforge.jp>
> +
> +allOf:
> +  - $ref: /schemas/pci/pci-bus.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - renesas,sh7751-pci
> +
> +  reg:
> +    minItems: 2
> +    maxItems: 2

Please add "reg-names", as there is more than one entry.
If that is not sufficient to document what each entry means, please add
"description"s, too.

> +  renesas,memory:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description: |
> +      PCI BMDMA src/dst memory area.

Isn't that the purpose of the "dma-ranges" property?

> +
> +  renesas,bcr1:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCIBCR1 value. This value makes add the value of BSC's BCR1.

What does this mean?

> +
> +  renesas,mcrmask:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCIMCR value. This value makes clear bit in the value of BSC's MCR.

What does this mean?

> +
> +  renesas,intm:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCIINTM value.
> +
> +  renesas,aintm:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCIIANTM value.
> +
> +  renesas,lsr:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCILSR0 and PCILSR1 values.
> +      First word is PCILSR0, Second word is PCILSR1.
> +
> +  renesas,lar:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCILSA0 and PCILAR1 values.
> +      First word is PCILAR0, Second word is PCILAR1.
> +
> +  renesas,dmabt:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCIDMABT value.
> +
> +  renesas,pintm:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      SH7751 PCIC PCIPINTM value.
> +
> +  renesas,config:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description: |
> +      SH7751 PCIC PCICONFIG values array. Register Number and value pair list.

Several of these properties look like pure hardware programming.
Can these values be derived from other (standard) DT properties?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[DO NOT MERGE v5 13/37] dt-bindings: clock: sh7750-cpg: Add renesas,sh7750-cpg header.

[Yoshinori Sato]

SH7750 CPG Clock output define.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../bindings/clock/renesas,sh7750-cpg.yaml    | 103 ++++++++++++++++++
 include/dt-bindings/clock/sh7750-cpg.h        |  26 +++++
 2 files changed, 129 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/renesas,sh7750-cpg.yaml
 create mode 100644 include/dt-bindings/clock/sh7750-cpg.h

diff --git a/Documentation/devicetree/bindings/clock/renesas,sh7750-cpg.yaml b/Documentation/devicetree/bindings/clock/renesas,sh7750-cpg.yaml
new file mode 100644
index 000000000000..da0b837c1123
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/renesas,sh7750-cpg.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/renesas,sh7750-cpg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SH7750/7751 Clock Pulse Generator (CPG)
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+description:
+  The Clock Pulse Generator (CPG) generates core clocks for the SoC.  It
+  includes PLLs, and variable ratio dividers.
+
+  The CPG may also provide a Clock Domain for SoC devices, in combination with
+  the CPG Module Stop (MSTP) Clocks.
+
+properties:
+  compatible:
+    enum:
+      - renesas,sh7750-cpg             # SH7750
+      - renesas,sh7750s-cpg            # SH775S
+      - renesas,sh7750r-cpg            # SH7750R
+      - renesas,sh7751-cpg             # SH7751
+      - renesas,sh7751r-cpg            # SH7751R
+
+  reg: true
+
+  reg-names: true
+
+  clocks: true
+
+  clock-names: true
+
+  '#clock-cells':
+    const: 1
+
+  renesas,mode:
+    description: Board-specific settings of the MD[0-2] pins on SoC
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 6
+
+  '#power-domain-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,sh7750-cpg
+              - renesas,sh7750s-cpg
+    then:
+      properties:
+        reg:
+          maxItems: 1
+        reg-names:
+          items:
+            - const: FRQCR
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,sh7750r-cpg
+              - renesas,sh7751-cpg
+              - renesas,sh7751r-cpg
+    then:
+      properties:
+        reg:
+          maxItems: 2
+        reg-names:
+          items:
+            - const: FRQCR
+            - const: CLKSTP00
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sh7750-cpg.h>
+    cpg: clock-controller@ffc00000 {
+        #clock-cells = <1>;
+        #power-domain-cells = <0>;
+        compatible = "renesas,sh7751r-cpg";
+        clocks = <&xtal>;
+        clock-names = "xtal";
+        reg = <0xffc00000 20>, <0xfe0a0000 16>;
+        reg-names = "FRQCR", "CLKSTP00";
+        renesas,mode = <0>;
+    };
diff --git a/include/dt-bindings/clock/sh7750-cpg.h b/include/dt-bindings/clock/sh7750-cpg.h
new file mode 100644
index 000000000000..17d5a8076aac
--- /dev/null
+++ b/include/dt-bindings/clock/sh7750-cpg.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+ *
+ * Copyright 2023 Yoshinori Sato
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_SH7750_H__
+#define __DT_BINDINGS_CLOCK_SH7750_H__
+
+#define SH7750_CPG_PLLOUT	0
+
+#define SH7750_CPG_FCK		1
+#define SH7750_CPG_BCK		2
+#define SH7750_CPG_ICK		3
+
+#define SH7750_MSTP_SCI		4
+#define SH7750_MSTP_RTC		5
+#define SH7750_MSTP_TMU012	6
+#define SH7750_MSTP_SCIF	7
+#define SH7750_MSTP_DMAC	8
+#define SH7750_MSTP_UBC		9
+#define SH7750_MSTP_SQ		10
+#define SH7750_CSTP_INTC	11
+#define SH7750_CSTP_TMU34	12
+#define SH7750_CSTP_PCIC	13
+
+#endif
-- 
2.39.2

[DO NOT MERGE v5 14/37] clk: Compatible with narrow registers

[Yoshinori Sato]

divider and gate only support 32-bit registers.
Older hardware uses narrower registers, so I want to be able to handle
8-bit and 16-bit wide registers.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/clk/clk-divider.c    | 56 ++++++++++++++++++++++++------------
 drivers/clk/clk-gate.c       | 56 +++++++++++++++++++++++++++---------
 include/linux/clk-provider.h | 22 ++++++++++----
 3 files changed, 97 insertions(+), 37 deletions(-)

diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index a2c2b5203b0a..a1b5187cd63d 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -26,20 +26,38 @@
  * parent - fixed parent.  No clk_set_parent support
  */
 
-static inline u32 clk_div_readl(struct clk_divider *divider)
-{
-	if (divider->flags & CLK_DIVIDER_BIG_ENDIAN)
-		return ioread32be(divider->reg);
-
-	return readl(divider->reg);
+static inline u32 clk_div_read(struct clk_divider *divider)
+{
+	if (divider->flags & CLK_DIVIDER_REG_8BIT)
+		return readb(divider->reg);
+	else if (divider->flags & CLK_DIVIDER_REG_16BIT) {
+		if (divider->flags & CLK_DIVIDER_BIG_ENDIAN)
+			return ioread16be(divider->reg);
+		else
+			return readw(divider->reg);
+	} else {
+		if (divider->flags & CLK_DIVIDER_BIG_ENDIAN)
+			return ioread32be(divider->reg);
+		else
+			return readl(divider->reg);
+	}
 }
 
-static inline void clk_div_writel(struct clk_divider *divider, u32 val)
+static inline void clk_div_write(struct clk_divider *divider, u32 val)
 {
-	if (divider->flags & CLK_DIVIDER_BIG_ENDIAN)
-		iowrite32be(val, divider->reg);
-	else
-		writel(val, divider->reg);
+	if (divider->flags & CLK_DIVIDER_REG_8BIT)
+		writeb(val, divider->reg);
+	else if (divider->flags & CLK_DIVIDER_REG_16BIT) {
+		if (divider->flags & CLK_DIVIDER_BIG_ENDIAN)
+			iowrite16be(val, divider->reg);
+		else
+			writew(val, divider->reg);
+	} else {
+		if (divider->flags & CLK_DIVIDER_BIG_ENDIAN)
+			iowrite32be(val, divider->reg);
+		else
+			writel(val, divider->reg);
+	}
 }
 
 static unsigned int _get_table_maxdiv(const struct clk_div_table *table,
@@ -152,7 +170,7 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
 	struct clk_divider *divider = to_clk_divider(hw);
 	unsigned int val;
 
-	val = clk_div_readl(divider) >> divider->shift;
+	val = clk_div_read(divider) >> divider->shift;
 	val &= clk_div_mask(divider->width);
 
 	return divider_recalc_rate(hw, parent_rate, val, divider->table,
@@ -434,7 +452,7 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
 	if (divider->flags & CLK_DIVIDER_READ_ONLY) {
 		u32 val;
 
-		val = clk_div_readl(divider) >> divider->shift;
+		val = clk_div_read(divider) >> divider->shift;
 		val &= clk_div_mask(divider->width);
 
 		return divider_ro_round_rate(hw, rate, prate, divider->table,
@@ -455,7 +473,7 @@ static int clk_divider_determine_rate(struct clk_hw *hw,
 	if (divider->flags & CLK_DIVIDER_READ_ONLY) {
 		u32 val;
 
-		val = clk_div_readl(divider) >> divider->shift;
+		val = clk_div_read(divider) >> divider->shift;
 		val &= clk_div_mask(divider->width);
 
 		return divider_ro_determine_rate(hw, req, divider->table,
@@ -505,11 +523,11 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
 	if (divider->flags & CLK_DIVIDER_HIWORD_MASK) {
 		val = clk_div_mask(divider->width) << (divider->shift + 16);
 	} else {
-		val = clk_div_readl(divider);
+		val = clk_div_read(divider);
 		val &= ~(clk_div_mask(divider->width) << divider->shift);
 	}
 	val |= (u32)value << divider->shift;
-	clk_div_writel(divider, val);
+	clk_div_write(divider, val);
 
 	if (divider->lock)
 		spin_unlock_irqrestore(divider->lock, flags);
@@ -538,7 +556,7 @@ struct clk_hw *__clk_hw_register_divider(struct device *dev,
 		struct device_node *np, const char *name,
 		const char *parent_name, const struct clk_hw *parent_hw,
 		const struct clk_parent_data *parent_data, unsigned long flags,
-		void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+		void __iomem *reg, u8 shift, u8 width, u32 clk_divider_flags,
 		const struct clk_div_table *table, spinlock_t *lock)
 {
 	struct clk_divider *div;
@@ -610,7 +628,7 @@ EXPORT_SYMBOL_GPL(__clk_hw_register_divider);
 struct clk *clk_register_divider_table(struct device *dev, const char *name,
 		const char *parent_name, unsigned long flags,
 		void __iomem *reg, u8 shift, u8 width,
-		u8 clk_divider_flags, const struct clk_div_table *table,
+		u32 clk_divider_flags, const struct clk_div_table *table,
 		spinlock_t *lock)
 {
 	struct clk_hw *hw;
@@ -664,7 +682,7 @@ struct clk_hw *__devm_clk_hw_register_divider(struct device *dev,
 		struct device_node *np, const char *name,
 		const char *parent_name, const struct clk_hw *parent_hw,
 		const struct clk_parent_data *parent_data, unsigned long flags,
-		void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+		void __iomem *reg, u8 shift, u8 width, u32 clk_divider_flags,
 		const struct clk_div_table *table, spinlock_t *lock)
 {
 	struct clk_hw **ptr, *hw;
diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 68e585a02fd9..8a7e97e8dc73 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -24,20 +24,38 @@
  * parent - fixed parent.  No clk_set_parent support
  */
 
-static inline u32 clk_gate_readl(struct clk_gate *gate)
+static inline u32 clk_gate_read(struct clk_gate *gate)
 {
-	if (gate->flags & CLK_GATE_BIG_ENDIAN)
-		return ioread32be(gate->reg);
-
-	return readl(gate->reg);
+	if (gate->flags & CLK_GATE_REG_8BIT)
+		return readb(gate->reg);
+	else if (gate->flags & CLK_GATE_REG_16BIT) {
+		if (gate->flags & CLK_GATE_BIG_ENDIAN)
+			return ioread16be(gate->reg);
+		else
+			return readw(gate->reg);
+	} else {
+		if (gate->flags & CLK_GATE_BIG_ENDIAN)
+			return ioread32be(gate->reg);
+		else
+			return readl(gate->reg);
+	}
 }
 
-static inline void clk_gate_writel(struct clk_gate *gate, u32 val)
+static inline void clk_gate_write(struct clk_gate *gate, u32 val)
 {
-	if (gate->flags & CLK_GATE_BIG_ENDIAN)
-		iowrite32be(val, gate->reg);
-	else
-		writel(val, gate->reg);
+	if (gate->flags & CLK_GATE_REG_8BIT)
+		writeb(val, gate->reg);
+	else if (gate->flags & CLK_GATE_REG_16BIT) {
+		if (gate->flags & CLK_GATE_BIG_ENDIAN)
+			iowrite16be(val, gate->reg);
+		else
+			writew(val, gate->reg);
+	} else {
+		if (gate->flags & CLK_GATE_BIG_ENDIAN)
+			iowrite32be(val, gate->reg);
+		else
+			writel(val, gate->reg);
+	}
 }
 
 /*
@@ -72,7 +90,7 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
 		if (set)
 			reg |= BIT(gate->bit_idx);
 	} else {
-		reg = clk_gate_readl(gate);
+		reg = clk_gate_read(gate);
 
 		if (set)
 			reg |= BIT(gate->bit_idx);
@@ -80,7 +98,7 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
 			reg &= ~BIT(gate->bit_idx);
 	}
 
-	clk_gate_writel(gate, reg);
+	clk_gate_write(gate, reg);
 
 	if (gate->lock)
 		spin_unlock_irqrestore(gate->lock, flags);
@@ -105,7 +123,7 @@ int clk_gate_is_enabled(struct clk_hw *hw)
 	u32 reg;
 	struct clk_gate *gate = to_clk_gate(hw);
 
-	reg = clk_gate_readl(gate);
+	reg = clk_gate_read(gate);
 
 	/* if a set bit disables this clk, flip it before masking */
 	if (gate->flags & CLK_GATE_SET_TO_DISABLE)
@@ -143,6 +161,18 @@ struct clk_hw *__clk_hw_register_gate(struct device *dev,
 			return ERR_PTR(-EINVAL);
 		}
 	}
+	if (clk_gate_flags & CLK_GATE_REG_16BIT) {
+		if (bit_idx > 15) {
+			pr_err("gate bit exceeds 16 bits\n");
+			return ERR_PTR(-EINVAL);
+		}
+	}
+	if (clk_gate_flags & CLK_GATE_REG_8BIT) {
+		if (bit_idx > 7) {
+			pr_err("gate bit exceeds 8 bits\n");
+			return ERR_PTR(-EINVAL);
+		}
+	}
 
 	/* allocate the gate */
 	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index ace3a4ce2fc9..d9ae66caa3b7 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -508,12 +508,16 @@ void of_fixed_clk_setup(struct device_node *np);
  * CLK_GATE_BIG_ENDIAN - by default little endian register accesses are used for
  *	the gate register.  Setting this flag makes the register accesses big
  *	endian.
+ * CLK_GATE_REG_8BIT - by default 32bit register accesses are used for
+ *	the gate register.  Setting this flag makes the register accesses 8bit.
+ * CLK_GATE_REG_16BIT - by default 32bit register accesses are used for
+ *	the gate register.  Setting this flag makes the register accesses 16bit.
  */
 struct clk_gate {
 	struct clk_hw hw;
 	void __iomem	*reg;
 	u8		bit_idx;
-	u8		flags;
+	u32		flags;
 	spinlock_t	*lock;
 };
 
@@ -522,6 +526,8 @@ struct clk_gate {
 #define CLK_GATE_SET_TO_DISABLE		BIT(0)
 #define CLK_GATE_HIWORD_MASK		BIT(1)
 #define CLK_GATE_BIG_ENDIAN		BIT(2)
+#define CLK_GATE_REG_8BIT		BIT(3)
+#define CLK_GATE_REG_16BIT		BIT(4)
 
 extern const struct clk_ops clk_gate_ops;
 struct clk_hw *__clk_hw_register_gate(struct device *dev,
@@ -675,13 +681,17 @@ struct clk_div_table {
  * CLK_DIVIDER_BIG_ENDIAN - By default little endian register accesses are used
  *	for the divider register.  Setting this flag makes the register accesses
  *	big endian.
+ * CLK_DIVIDER_REG_8BIT - by default 32bit register accesses are used for
+ *	the gate register.  Setting this flag makes the register accesses 8bit.
+ * CLK_DIVIDER_REG_16BIT - by default 32bit register accesses are used for
+ *	the gate register.  Setting this flag makes the register accesses 16bit.
  */
 struct clk_divider {
 	struct clk_hw	hw;
 	void __iomem	*reg;
 	u8		shift;
 	u8		width;
-	u8		flags;
+	u32		flags;
 	const struct clk_div_table	*table;
 	spinlock_t	*lock;
 };
@@ -697,6 +707,8 @@ struct clk_divider {
 #define CLK_DIVIDER_READ_ONLY		BIT(5)
 #define CLK_DIVIDER_MAX_AT_ZERO		BIT(6)
 #define CLK_DIVIDER_BIG_ENDIAN		BIT(7)
+#define CLK_DIVIDER_REG_8BIT		BIT(8)
+#define CLK_DIVIDER_REG_16BIT		BIT(9)
 
 extern const struct clk_ops clk_divider_ops;
 extern const struct clk_ops clk_divider_ro_ops;
@@ -726,18 +738,18 @@ struct clk_hw *__clk_hw_register_divider(struct device *dev,
 		struct device_node *np, const char *name,
 		const char *parent_name, const struct clk_hw *parent_hw,
 		const struct clk_parent_data *parent_data, unsigned long flags,
-		void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+		void __iomem *reg, u8 shift, u8 width, u32 clk_divider_flags,
 		const struct clk_div_table *table, spinlock_t *lock);
 struct clk_hw *__devm_clk_hw_register_divider(struct device *dev,
 		struct device_node *np, const char *name,
 		const char *parent_name, const struct clk_hw *parent_hw,
 		const struct clk_parent_data *parent_data, unsigned long flags,
-		void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+		void __iomem *reg, u8 shift, u8 width, u32 clk_divider_flags,
 		const struct clk_div_table *table, spinlock_t *lock);
 struct clk *clk_register_divider_table(struct device *dev, const char *name,
 		const char *parent_name, unsigned long flags,
 		void __iomem *reg, u8 shift, u8 width,
-		u8 clk_divider_flags, const struct clk_div_table *table,
+		u32 clk_divider_flags, const struct clk_div_table *table,
 		spinlock_t *lock);
 /**
  * clk_register_divider - register a divider clock with the clock framework
-- 
2.39.2

Re: [DO NOT MERGE v5 14/37] clk: Compatible with narrow registers

[Uwe Kleine-König]

[-- Attachment #1: Type: text/plain, Size: 1123 bytes --]

Hello,

On Tue, Dec 05, 2023 at 06:45:33PM +0900, Yoshinori Sato wrote:
> @@ -675,13 +681,17 @@ struct clk_div_table {
>   * CLK_DIVIDER_BIG_ENDIAN - By default little endian register accesses are used
>   *	for the divider register.  Setting this flag makes the register accesses
>   *	big endian.
> + * CLK_DIVIDER_REG_8BIT - by default 32bit register accesses are used for
> + *	the gate register.  Setting this flag makes the register accesses 8bit.
> + * CLK_DIVIDER_REG_16BIT - by default 32bit register accesses are used for
> + *	the gate register.  Setting this flag makes the register accesses 16bit.
>   */
>  struct clk_divider {
>  	struct clk_hw	hw;
>  	void __iomem	*reg;
>  	u8		shift;
>  	u8		width;
> -	u8		flags;
> +	u32		flags;
>  	const struct clk_div_table	*table;
>  	spinlock_t	*lock;
>  };

I wonder why .flags was made bigger here. The two new flag values would
still fit into the u8, right?

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

[DO NOT MERGE v5 15/37] clk: renesas: Add SH7750/7751 CPG Driver

[Yoshinori Sato]

Renesas SH7750 and SH7751 series CPG driver.
This driver supported frequency control and clock gating.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/clk/renesas/Kconfig      |  16 +-
 drivers/clk/renesas/Makefile     |   1 +
 drivers/clk/renesas/clk-sh7750.c | 498 +++++++++++++++++++++++++++++++
 3 files changed, 513 insertions(+), 2 deletions(-)
 create mode 100644 drivers/clk/renesas/clk-sh7750.c

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 69396e197959..b1350cda7ade 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 
 config CLK_RENESAS
-	bool "Renesas SoC clock support" if COMPILE_TEST && !ARCH_RENESAS
-	default y if ARCH_RENESAS
+	bool "Renesas SoC clock support" if COMPILE_TEST && !ARCH_RENESAS && !SUPERH
+	default y if ARCH_RENESAS || SUPERH
 	select CLK_EMEV2 if ARCH_EMEV2
 	select CLK_RZA1 if ARCH_R7S72100
 	select CLK_R7S9210 if ARCH_R7S9210
@@ -40,6 +40,9 @@ config CLK_RENESAS
 	select CLK_R9A08G045 if ARCH_R9A08G045
 	select CLK_R9A09G011 if ARCH_R9A09G011
 	select CLK_SH73A0 if ARCH_SH73A0
+	select CLK_SH7750 if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7750S || \
+	                     CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751 || \
+			     CPU_SUBTYPE_SH7751R
 
 if CLK_RENESAS
 
@@ -193,6 +196,10 @@ config CLK_SH73A0
 	select CLK_RENESAS_CPG_MSTP
 	select CLK_RENESAS_DIV6
 
+config CLK_SH7750
+	bool "SH7750/7751 family clock support" if COMPILE_TEST
+	help
+	  This is a driver for SH7750 / SH7751 CPG.
 
 # Family
 config CLK_RCAR_CPG_LIB
@@ -223,6 +230,11 @@ config CLK_RZG2L
 	bool "Renesas RZ/{G2L,G2UL,G3S,V2L} family clock support" if COMPILE_TEST
 	select RESET_CONTROLLER
 
+config CLK_SH7750
+	bool "Renesas SH7750/7751 family clock support" if COMPILE_TEST
+	help
+	  This is a driver for SH7750 / SH7751 CPG.
+
 # Generic
 config CLK_RENESAS_CPG_MSSR
 	bool "CPG/MSSR clock support" if COMPILE_TEST
diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index 879a07d445f9..233e029fcd54 100644
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_CLK_R9A07G054)		+= r9a07g044-cpg.o
 obj-$(CONFIG_CLK_R9A08G045)		+= r9a08g045-cpg.o
 obj-$(CONFIG_CLK_R9A09G011)		+= r9a09g011-cpg.o
 obj-$(CONFIG_CLK_SH73A0)		+= clk-sh73a0.o
+obj-$(CONFIG_CLK_SH7750)		+= clk-sh7750.o
 
 # Family
 obj-$(CONFIG_CLK_RCAR_CPG_LIB)		+= rcar-cpg-lib.o
diff --git a/drivers/clk/renesas/clk-sh7750.c b/drivers/clk/renesas/clk-sh7750.c
new file mode 100644
index 000000000000..bd971e9a8869
--- /dev/null
+++ b/drivers/clk/renesas/clk-sh7750.c
@@ -0,0 +1,498 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas SH7750/51 CPG driver
+ *
+ * Copyright 2023 Yoshinori Sato <ysato@users.sourceforge.jp>
+ */
+
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+
+/* PCLK divide rate selector */
+static const struct clk_div_table pdiv_table[] = {
+	{ .val = 0, .div = 2, },
+	{ .val = 1, .div = 3, },
+	{ .val = 2, .div = 4, },
+	{ .val = 3, .div = 6, },
+	{ .val = 4, .div = 8, },
+	{ }
+};
+
+/* ICLK and BCLK divide rate selector */
+static const struct clk_div_table div_table[] = {
+	{ .val = 0, .div = 1, },
+	{ .val = 1, .div = 2, },
+	{ .val = 2, .div = 3, },
+	{ .val = 3, .div = 4, },
+	{ .val = 4, .div = 6, },
+	{ .val = 5, .div = 8, },
+	{ }
+};
+
+struct cpg_priv {
+	struct clk_hw hw;
+	spinlock_t clklock;
+	void __iomem *frqcr;
+	void __iomem *clkstp00;
+	u32 mode;
+	u32 feat;
+};
+
+/* CPG feature flag */
+#define CPG_DIV1	BIT(0)	/* 7750, 7750S, 7751 */
+#define MSTP_CR2	BIT(1)	/* 7750S, 7750R, 7751, 7751R */
+#define MSTP_CLKSTP	BIT(2)	/* 7750R, 7751, 7751R */
+#define MSTP_CSTP2	BIT(3)	/* 7751, 7751R */
+
+enum {
+	CPG_SH7750,
+	CPG_SH7750S,
+	CPG_SH7750R,
+	CPG_SH7751,
+	CPG_SH7751R,
+};
+
+static const u32 cpg_feature[] = {
+	[CPG_SH7750]  = CPG_DIV1,
+	[CPG_SH7750S] = CPG_DIV1 | MSTP_CR2,
+	[CPG_SH7750R] = MSTP_CR2 | MSTP_CLKSTP,
+	[CPG_SH7751]  = CPG_DIV1 | MSTP_CR2 | MSTP_CLKSTP | MSTP_CSTP2,
+	[CPG_SH7751R] = MSTP_CR2 | MSTP_CLKSTP | MSTP_CSTP2,
+};
+
+enum clk_type {CLK_DIV, CLK_STBCR, CLK_STBCR2, CLK_CLKSTP00};
+
+enum {
+	FRQCR = 0,
+	STBCR = 4,
+	WTCNT = 8,
+	WTCSR = 12,
+	STBCR2 = 16,
+	CLKSTP00 = 0,
+	CLKSTPCLR00 = 8,
+};
+
+static struct cpg_priv *cpg_data;
+
+#define to_priv(_hw) container_of(_hw, struct cpg_priv, hw)
+
+#define FRQCR_PLL1EN BIT(10)
+static const unsigned int pll1mult[] = { 12, 12, 6, 12, 6, 12, 1};
+
+static unsigned long pll_recalc_rate(struct clk_hw *hw,
+				      unsigned long parent_rate)
+{
+	struct cpg_priv *cpg = to_priv(hw);
+	unsigned long rate = parent_rate;
+	u16 frqcr;
+
+	frqcr = ioread16(cpg->frqcr);
+	if (frqcr & FRQCR_PLL1EN) {
+		rate *= pll1mult[cpg->mode];
+		if (cpg->mode < 6 && (cpg->feat & CPG_DIV1))
+			rate /= 2;
+	}
+	return rate;
+}
+
+static void get_round_rate(struct cpg_priv *cpg,
+			   unsigned long *out, bool *pllen,
+			   unsigned long rate, unsigned long prate)
+{
+	long pllout, res;
+	bool pll;
+
+	if (cpg->mode < 6 && (cpg->feat & CPG_DIV1))
+		prate /= 2;
+
+	pllout = prate * pll1mult[cpg->mode];
+	if (abs(pllout - rate) > abs(prate - rate)) {
+		res = prate;
+		pll = false;
+	} else {
+		res = pllout;
+		pll = true;
+	}
+	if (out)
+		*out = res;
+	if (pllen)
+		*pllen = pll;
+}
+
+static int pll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
+{
+	struct cpg_priv *cpg = to_priv(hw);
+
+	get_round_rate(cpg, &req->rate, NULL, req->rate, req->best_parent_rate);
+	return 0;
+}
+
+static int pll_set_rate(struct clk_hw *hw,
+			unsigned long rate, unsigned long prate)
+{
+	struct cpg_priv *cpg = to_priv(hw);
+	bool oldpll, newpll;
+	u16 frqcr;
+
+	frqcr = ioread16(cpg->frqcr);
+	get_round_rate(cpg, NULL, &newpll, rate, prate);
+	oldpll = frqcr & FRQCR_PLL1EN;
+	frqcr &= ~FRQCR_PLL1EN;
+
+	if (newpll) {
+		frqcr |= FRQCR_PLL1EN;
+		if (!oldpll) {
+			/* set PLL wakeup delay time */
+			iowrite16(0xa500, cpg->frqcr + WTCNT);
+			iowrite16(0xa507, cpg->frqcr + WTCNT);
+			iowrite16(0x5a00, cpg->frqcr + WTCSR);
+		}
+	}
+	iowrite16(frqcr, cpg->frqcr);
+
+	/* Test for new PLL state */
+	frqcr = ioread16(cpg->frqcr);
+	oldpll = frqcr & FRQCR_PLL1EN;
+	return !(oldpll == newpll);
+}
+
+static const struct clk_ops pll_ops = {
+	.recalc_rate = pll_recalc_rate,
+	.determine_rate = pll_determine_rate,
+	.set_rate = pll_set_rate,
+};
+
+#define PLLOUT "pllout"
+
+static int register_pll(struct device_node *node, struct cpg_priv *cpg)
+{
+	const char *clk_name = node->name;
+	const char *parent_name;
+	struct clk_init_data init = {
+		.name = PLLOUT,
+		.ops = &pll_ops,
+		.flags = 0,
+		.num_parents = 1,
+	};
+	int ret;
+
+	parent_name = of_clk_get_parent_name(node, 0);
+	init.parent_names = &parent_name;
+	cpg->hw.init = &init;
+
+	ret = of_clk_hw_register(node, &cpg->hw);
+	if (ret < 0) {
+		pr_err("%s: failed to register %s pll clock (%d)\n",
+		       __func__, clk_name, ret);
+		return ret;
+	}
+	if (ret < 0)
+		pr_err("%s: failed to add provider %s (%d)\n",
+		       __func__, clk_name, ret);
+	return ret;
+}
+
+static void clkstp00_sw(struct clk_hw *hw, bool on)
+{
+	u32 val;
+	struct clk_gate *gate = to_clk_gate(hw);
+
+	val = BIT(gate->bit_idx);
+	if (on)
+		writel(val, gate->reg + CLKSTPCLR00);
+	else
+		writel(val, gate->reg);
+}
+
+static int clkstp00_enable(struct clk_hw *hw)
+{
+	clkstp00_sw(hw, true);
+	return 0;
+}
+
+static void clkstp00_disable(struct clk_hw *hw)
+{
+	clkstp00_sw(hw, false);
+}
+
+static int clkstp00_is_enabled(struct clk_hw *hw)
+{
+	u8 val;
+	struct clk_gate *gate = to_clk_gate(hw);
+
+	val = readb(gate->reg);
+	val &= 1 << gate->bit_idx;
+	return val == 0;
+}
+
+static const struct clk_ops gate_clkstp00_ops = {
+	.enable = clkstp00_enable,
+	.disable = clkstp00_disable,
+	.is_enabled = clkstp00_is_enabled,
+};
+
+static struct clk_hw *clk_hw_register_clkstp(struct device_node *node,
+					     const char *name,
+					     const char *parent,
+					     void __iomem *reg, int bit,
+					     spinlock_t *lock)
+{
+	struct clk_gate *gate;
+	struct clk_init_data init = {
+		.name = name,
+		.ops = &gate_clkstp00_ops,
+		.flags = 0,
+		.parent_names = &parent,
+		.num_parents = 1,
+	};
+	struct clk_hw *hw;
+	int ret;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (gate == NULL)
+		goto error;
+	gate->reg = reg;
+	gate->bit_idx = bit;
+	gate->flags = 0;
+	gate->lock = lock;
+	gate->hw.init = &init;
+	hw = &gate->hw;
+	ret = of_clk_hw_register(node, hw);
+	if (ret < 0)
+		goto error;
+	return hw;
+error:
+	kfree(gate);
+	return ERR_PTR(ret);
+}
+
+static int register_div(struct device_node *node, struct cpg_priv *cpg)
+{
+	static const char * const divout[] = {
+		"fck", "bck", "ick",
+	};
+	static const char * const stbcrout[] = {
+		"sci_clk", "rtc_clk", "tmu012_clk",	/* STBCR */
+		"scif_clk", "dmac_clk",			/* STBCR */
+		"ubc_clk", "sq_clk",			/* STBCR2 */
+	};
+	static const char * const clkstpout[] = {
+		"intc_clk", "tmu34_clk", "pcic_clk",	/* CLKSTP00 */
+	};
+
+	unsigned int i;
+	int ret;
+	struct clk_hw_onecell_data *data;
+	struct clk_hw *reg_hw;
+	int num_clk = ARRAY_SIZE(divout) + ARRAY_SIZE(stbcrout) + ARRAY_SIZE(clkstpout);
+
+	data = kzalloc(struct_size(data, hws, num_clk + 1), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	num_clk = 0;
+	for (i = 0; i < ARRAY_SIZE(divout); i++) {
+		reg_hw = __clk_hw_register_divider(NULL, node, divout[i],
+						   PLLOUT, NULL, NULL,
+						   0, cpg->frqcr, i * 3, 3,
+						   CLK_DIVIDER_REG_16BIT,
+						   (i == 0) ? pdiv_table : div_table,
+						   &cpg->clklock);
+		if (IS_ERR(reg_hw)) {
+			ret = PTR_ERR(reg_hw);
+			goto error;
+		}
+		data->hws[num_clk++] = reg_hw;
+	}
+	for (i = 0; i < ARRAY_SIZE(stbcrout); i++) {
+		u32 off =  (i < 5) ? STBCR : STBCR2;
+
+		if (i >= 5 && !(cpg->feat & MSTP_CR2))
+			break;
+		reg_hw = __clk_hw_register_gate(NULL, node, stbcrout[i],
+						divout[0], NULL, NULL,
+						0, cpg->frqcr + off, i % 5,
+						CLK_GATE_REG_8BIT | CLK_GATE_SET_TO_DISABLE,
+						&cpg->clklock);
+		if (IS_ERR(reg_hw)) {
+			ret = PTR_ERR(reg_hw);
+			goto error;
+		}
+		data->hws[num_clk++] = reg_hw;
+	}
+	if (cpg->feat & MSTP_CLKSTP) {
+		for (i = 0; i < ARRAY_SIZE(clkstpout); i++) {
+			if (i == 2 && !(cpg->feat & MSTP_CSTP2))
+				continue;
+			reg_hw = clk_hw_register_clkstp(node, clkstpout[i],
+							divout[0], cpg->clkstp00,
+							i, &cpg->clklock);
+			if (IS_ERR(reg_hw)) {
+				ret = PTR_ERR(reg_hw);
+				goto error;
+			}
+			data->hws[num_clk++] = reg_hw;
+		}
+	}
+	data->num = num_clk;
+	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, data);
+	if (ret < 0)
+		goto error;
+	return 0;
+
+error:
+	pr_err("%pOF: failed to register clock (%d)\n",
+		       node, ret);
+	for (num_clk--; num_clk >= 0; num_clk--)
+		kfree(data->hws[num_clk]);
+	kfree(data);
+	return ret;
+}
+
+static struct cpg_priv *sh7750_cpg_setup(struct device_node *node, u32 feat)
+{
+	unsigned int num_parents;
+	u32 mode;
+	struct cpg_priv *cpg;
+	int ret = 0;
+
+	num_parents = of_clk_get_parent_count(node);
+	if (num_parents < 1) {
+		pr_err("%s: no parent found", node->name);
+		return ERR_PTR(-ENODEV);
+	}
+
+	of_property_read_u32_index(node, "renesas,mode", 0, &mode);
+	if (mode >= 7) {
+		pr_err("%s: Invalid clock mode setting (%u)\n",
+		       node->name, mode);
+		return ERR_PTR(-EINVAL);
+	}
+
+	cpg = kzalloc(sizeof(struct cpg_priv), GFP_KERNEL);
+	if (!cpg)
+		return ERR_PTR(-ENOMEM);
+
+	cpg->frqcr = of_iomap(node, 0);
+	if (cpg->frqcr == NULL) {
+		pr_err("%pOF: failed to map divide register", node);
+		ret = -ENODEV;
+		goto cpg_free;
+	}
+
+	if (feat & MSTP_CLKSTP) {
+		cpg->clkstp00 = of_iomap(node, 1);
+		if (cpg->clkstp00 == NULL) {
+			pr_err("%pOF: failed to map clkstp00 register", node);
+			ret = -ENODEV;
+			goto unmap_frqcr;
+		}
+	}
+	cpg->feat = feat;
+	cpg->mode = mode;
+
+	ret = register_pll(node, cpg);
+	if (ret < 0)
+		goto unmap_clkstp00;
+
+	ret = register_div(node, cpg);
+	if (ret < 0)
+		goto unmap_clkstp00;
+
+	return cpg;
+
+unmap_clkstp00:
+	iounmap(cpg->clkstp00);
+unmap_frqcr:
+	iounmap(cpg->frqcr);
+cpg_free:
+	kfree(cpg);
+	return ERR_PTR(ret);
+}
+
+static void __init sh7750_cpg_init(struct device_node *node)
+{
+	cpg_data = sh7750_cpg_setup(node, cpg_feature[CPG_SH7750]);
+	if (IS_ERR(cpg_data))
+		cpg_data = NULL;
+}
+
+static void __init sh7750s_cpg_init(struct device_node *node)
+{
+	cpg_data = sh7750_cpg_setup(node, cpg_feature[CPG_SH7750S]);
+	if (IS_ERR(cpg_data))
+		cpg_data = NULL;
+}
+
+static void __init sh7750r_cpg_init(struct device_node *node)
+{
+	cpg_data = sh7750_cpg_setup(node, cpg_feature[CPG_SH7750R]);
+	if (IS_ERR(cpg_data))
+		cpg_data = NULL;
+}
+
+static void __init sh7751_cpg_init(struct device_node *node)
+{
+	cpg_data = sh7750_cpg_setup(node, cpg_feature[CPG_SH7751]);
+	if (IS_ERR(cpg_data))
+		cpg_data = NULL;
+}
+
+static void __init sh7751r_cpg_init(struct device_node *node)
+{
+	cpg_data = sh7750_cpg_setup(node, cpg_feature[CPG_SH7751R]);
+	if (IS_ERR(cpg_data))
+		cpg_data = NULL;
+}
+
+CLK_OF_DECLARE_DRIVER(sh7750_cpg, "renesas,sh7750-cpg",
+		      sh7750_cpg_init);
+CLK_OF_DECLARE_DRIVER(sh7750s_cpg, "renesas,sh7750s-cpg",
+		      sh7750s_cpg_init);
+CLK_OF_DECLARE_DRIVER(sh7750r_cpg, "renesas,sh7750r-cpg",
+		      sh7750r_cpg_init);
+CLK_OF_DECLARE_DRIVER(sh7751_cpg, "renesas,sh7751-cpg",
+		      sh7751_cpg_init);
+CLK_OF_DECLARE_DRIVER(sh7751r_cpg, "renesas,sh7751r-cpg",
+		      sh7751r_cpg_init);
+
+static int sh7750_cpg_probe(struct platform_device *pdev)
+{
+	u32 feature;
+
+	if (cpg_data)
+		return 0;
+	feature = *(u32 *)of_device_get_match_data(&pdev->dev);
+	cpg_data = sh7750_cpg_setup(pdev->dev.of_node, feature);
+	if (IS_ERR(cpg_data))
+		return PTR_ERR(cpg_data);
+	return 0;
+}
+
+static const struct of_device_id sh7750_cpg_of_match[] = {
+	{ .compatible = "renesas,sh7750-cpg",
+	  .data = &cpg_feature[CPG_SH7750] },
+	{ .compatible = "renesas,sh7750s-cpg",
+	  .data = &cpg_feature[CPG_SH7750S] },
+	{ .compatible = "renesas,sh7750r-cpg",
+	  .data = &cpg_feature[CPG_SH7750R] },
+	{ .compatible = "renesas,sh7751-cpg",
+	  .data = &cpg_feature[CPG_SH7751] },
+	{ .compatible = "renesas,sh7751r-cpg",
+	  .data = &cpg_feature[CPG_SH7751R] },
+	{ }
+};
+
+static struct platform_driver sh7750_cpg_driver = {
+	.probe  = sh7750_cpg_probe,
+	.driver = {
+		.name = "sh7750-cpg",
+		.of_match_table = sh7750_cpg_of_match,
+	},
+};
+builtin_platform_driver(sh7750_cpg_driver);
-- 
2.39.2

[DO NOT MERGE v5 16/37] irqchip: Add SH7751 INTC driver

[Yoshinori Sato]

Renesas SH7751 Internal interrupt controller driver.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/irqchip/Kconfig              |   8 +
 drivers/irqchip/Makefile             |   1 +
 drivers/irqchip/irq-renesas-sh7751.c | 290 +++++++++++++++++++++++++++
 3 files changed, 299 insertions(+)
 create mode 100644 drivers/irqchip/irq-renesas-sh7751.c

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index f7149d0f3d45..658523f65b1d 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -679,4 +679,12 @@ config SUNPLUS_SP7021_INTC
 	  chained controller, routing all interrupt source in P-Chip to
 	  the primary controller on C-Chip.
 
+config RENESAS_SH7751_INTC
+	bool "Renesas SH7751 Interrupt Controller"
+	depends on SH_DEVICE_TREE || COMPILE_TEST
+	select IRQ_DOMAIN_HIERARCHY
+	help
+	  Support for the Renesas SH7751 On-chip interrupt controller.
+	  And external interrupt encoder for some targets.
+
 endmenu
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index ffd945fe71aa..26c91d075e25 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -120,3 +120,4 @@ obj-$(CONFIG_IRQ_IDT3243X)		+= irq-idt3243x.o
 obj-$(CONFIG_APPLE_AIC)			+= irq-apple-aic.o
 obj-$(CONFIG_MCHP_EIC)			+= irq-mchp-eic.o
 obj-$(CONFIG_SUNPLUS_SP7021_INTC)	+= irq-sp7021-intc.o
+obj-$(CONFIG_RENESAS_SH7751_INTC)	+= irq-renesas-sh7751.o
diff --git a/drivers/irqchip/irq-renesas-sh7751.c b/drivers/irqchip/irq-renesas-sh7751.c
new file mode 100644
index 000000000000..2a5cb2444d99
--- /dev/null
+++ b/drivers/irqchip/irq-renesas-sh7751.c
@@ -0,0 +1,290 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas SH7751 interrupt controller driver
+ *
+ * Copyright 2023 Yoshinori Sato <ysato@users.sourceforge.jp>
+ */
+
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of.h>
+#include <linux/io.h>
+#include <dt-bindings/interrupt-controller/sh7751-intc.h>
+
+struct ipr {
+	unsigned int off;
+	unsigned int idx;
+};
+
+struct sh7751_intc_priv {
+	void __iomem *base;
+	void __iomem *intpri00;
+	struct ipr   *iprmap[2];
+	bool	     irlm;
+};
+
+enum {
+	R_ICR         = 0x00,
+	R_IPR         = 0x04,
+	R_INTPRI00    = 0x00,
+	R_INTREQ00    = 0x20,
+	R_INTMSK00    = 0x40,
+	R_INTMSKCLR00 = 0x60,
+};
+
+#define ICR_IRLM BIT(7)
+
+/*
+ * SH7751 IRQ mapping
+ *  IRQ16 - 63: Group0 - IPRA to IPRD
+ *   IRQ16 - 31: external IRL input (ICR.IRLM is 0)
+ *  IRQ80 - 92: Group1 - INTPRI00
+ */
+#define IRQ_START	16
+#define MAX_IRL		(IRQ_START + NR_IRL)
+#define GRP0_IRQ_END	63
+#define GRP1_IRQ_START	80
+#define IRQ_END		92
+
+#define NR_IPRMAP0	(GRP0_IRQ_END - IRQ_START + 1)
+#define NR_IPRMAP1	(IRQ_END - GRP1_IRQ_START)
+#define IPR_PRI_MASK	0x000f
+
+/*
+ * IPR registers have 4bit priority x 4 entry (16bits)
+ * Interrupts can be masked by setting pri to 0.
+ */
+static void update_ipr(struct sh7751_intc_priv *priv, unsigned int irq, u16 pri)
+{
+	struct ipr *ipr = NULL;
+	void __iomem *ipr_base;
+	unsigned int offset;
+	u16 mask;
+
+	if (irq < GRP1_IRQ_START) {
+		/* Group0 */
+		ipr = priv->iprmap[0];
+		ipr += irq - IRQ_START;
+		ipr_base = priv->base + R_IPR;
+		offset = ipr->off;
+	} else {
+		/* Group1 */
+		ipr = priv->iprmap[1];
+		ipr += irq - GRP1_IRQ_START;
+		ipr_base = priv->intpri00;
+		offset = ipr->off - INTPRI00;
+	}
+	if (ipr->off != ~0) {
+		mask = ~(IPR_PRI_MASK << ipr->idx);
+		pri = (pri & IPR_PRI_MASK) << ipr->idx;
+		mask &= __raw_readw(ipr_base + offset);
+		__raw_writew(mask | pri, ipr_base + offset);
+	} else {
+		pr_warn_once("%s: undefined IPR in irq %u\n", __FILE__, irq);
+	}
+}
+
+static inline bool is_valid_irq(unsigned int irq)
+{
+	/* IRQ16 - 63 */
+	if (irq >= IRQ_START && irq < IRQ_START + NR_IPRMAP0)
+		return true;
+	/* IRQ80 - 92 */
+	if (irq >= GRP1_IRQ_START && irq <= IRQ_END)
+		return true;
+	return false;
+}
+
+static inline struct sh7751_intc_priv *irq_data_to_priv(struct irq_data *data)
+{
+	return data->domain->host_data;
+}
+
+static void endisable_irq(struct irq_data *data, int enable)
+{
+	struct sh7751_intc_priv *priv;
+	unsigned int irq;
+
+	priv = irq_data_to_priv(data);
+
+	irq = irqd_to_hwirq(data);
+	if (!is_valid_irq(irq)) {
+		/* IRQ out of range */
+		pr_warn_once("%s: IRQ %u is out of range\n", __FILE__, irq);
+		return;
+	}
+
+	if (irq <= MAX_IRL && !priv->irlm)
+		/* IRL encoded external interrupt */
+		/* disable for SR.IMASK */
+		update_sr_imask(irq - IRQ_START, enable);
+	else
+		/* Internal peripheral interrupt */
+		/* mask for IPR priority 0 */
+		update_ipr(priv, irq, enable);
+}
+
+static void sh7751_mask_irq(struct irq_data *data)
+{
+	endisable_irq(data, 0);
+}
+
+static void sh7751_unmask_irq(struct irq_data *data)
+{
+	endisable_irq(data, 1);
+}
+
+static const struct irq_chip sh7751_irq_chip = {
+	.name		= "SH7751-INTC",
+	.irq_unmask	= sh7751_unmask_irq,
+	.irq_mask	= sh7751_mask_irq,
+};
+
+static int irq_sh7751_map(struct irq_domain *h, unsigned int virq,
+			  irq_hw_number_t hw_irq_num)
+{
+	irq_set_chip_and_handler(virq, &sh7751_irq_chip, handle_level_irq);
+	irq_get_irq_data(virq)->chip_data = h->host_data;
+	irq_modify_status(virq, IRQ_NOREQUEST, IRQ_NOPROBE);
+	return 0;
+}
+static const struct irq_domain_ops irq_ops = {
+	.map    = irq_sh7751_map,
+	.xlate  = irq_domain_xlate_onecell,
+};
+
+static int __init load_ipr_map(struct device_node *intc,
+			       struct sh7751_intc_priv *priv)
+{
+	struct property *ipr_map;
+	unsigned int num_ipr, i;
+	struct ipr *ipr;
+	const __be32 *p;
+	u32 irq;
+
+	ipr_map = of_find_property(intc, "renesas,ipr-map", &num_ipr);
+	if (IS_ERR(ipr_map))
+		return PTR_ERR(ipr_map);
+	num_ipr /= sizeof(u32);
+	/* 3words per entry. */
+	if (num_ipr % 3)
+		goto error1;
+	num_ipr /= 3;
+	if (num_ipr >= NR_IPRMAP0 + NR_IPRMAP1)
+		goto error1;
+
+	/* Allocate map array and fill in unassigned */
+	priv->iprmap[0] = kmalloc_array(NR_IPRMAP0, sizeof(struct ipr), GFP_KERNEL);
+	if (priv->iprmap[0] == NULL)
+		return -ENOMEM;
+	memset(priv->iprmap[0], ~0, NR_IPRMAP0 * sizeof(struct ipr));
+	priv->iprmap[1] = kmalloc_array(NR_IPRMAP1, sizeof(struct ipr), GFP_KERNEL);
+	if (priv->iprmap[1] == NULL) {
+		kfree(priv->iprmap[0]);
+		return -ENOMEM;
+	}
+	memset(priv->iprmap[1], ~0, NR_IPRMAP1 * sizeof(struct ipr));
+
+	p = NULL;
+	for (; num_ipr > 0; num_ipr--) {
+		/* 1st word - INTEVT code */
+		p = of_prop_next_u32(ipr_map, p, &irq);
+		if (!p)
+			goto error;
+		irq = evt2irq(irq);
+		if (!is_valid_irq(irq))
+			goto error;
+		if (irq < GRP1_IRQ_START) {
+			ipr = priv->iprmap[0];
+			irq -= IRQ_START;
+		} else {
+			ipr = priv->iprmap[1];
+			irq -= GRP1_IRQ_START;
+		}
+		ipr += irq;
+		/* 2nd word - IPR register offset */
+		p = of_prop_next_u32(ipr_map, p, &ipr->off);
+		/* 3rd word - IPR register bit indx */
+		p = of_prop_next_u32(ipr_map, p, &ipr->idx);
+
+		if ((ipr->off != INTPRI00 && ipr->off > IPRD) ||
+		    ipr->idx > IPR_B12)
+			goto error;
+	}
+
+	for (ipr = priv->iprmap[0], i = 0; i < NR_IPRMAP0; ipr++, i++) {
+		if (ipr->off != ~0) {
+			pr_debug("INTEVT=%04x (%u) reg=IPR%c idx=%u\n",
+				 irq2evt(i + IRQ_START), i + IRQ_START,
+				 'A' + ipr->off / 4, ipr->idx);
+		}
+	}
+	for (ipr = priv->iprmap[1], i = 0; i < NR_IPRMAP1; ipr++, i++) {
+		if (ipr->off != ~0) {
+			pr_debug("INTEVT=%04x (%u) reg=INTPRI00 idx=%u\n",
+				 irq2evt(i + GRP1_IRQ_START), i + GRP1_IRQ_START,
+				 ipr->idx);
+		}
+	}
+	return 0;
+error:
+	kfree(priv->iprmap[0]);
+	kfree(priv->iprmap[1]);
+error1:
+	pr_err("%pOFP: Failed to load renesas,ipr-map\n", intc);
+	return -EINVAL;
+}
+
+static int __init sh7751_intc_of_init(struct device_node *intc,
+				      struct device_node *parent)
+{
+	struct sh7751_intc_priv *priv;
+	void __iomem *base, *base2;
+	struct irq_domain *domain;
+	u16 icr;
+	int ret;
+
+	base = of_iomap(intc, 0);
+	base2 = of_iomap(intc, 1);
+	if (!base || !base2) {
+		pr_err("%pOFP: Invalid register definition\n", intc);
+		return -EINVAL;
+	}
+
+	priv = kzalloc(sizeof(struct sh7751_intc_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return -ENOMEM;
+
+	ret = load_ipr_map(intc, priv);
+	if (ret < 0) {
+		kfree(priv);
+		return ret;
+	}
+
+	priv->base = base;
+	priv->intpri00 = base2;
+
+	if (of_property_read_bool(intc, "renesas,irlm")) {
+		priv->irlm = true;
+		icr = __raw_readw(priv->base + R_ICR);
+		icr |= ICR_IRLM;
+		__raw_writew(icr, priv->base + R_ICR);
+	}
+
+	domain = irq_domain_add_linear(intc, NR_IRQS, &irq_ops, priv);
+	if (domain == NULL) {
+		pr_err("%pOFP: cannot initialize irq domain\n", intc);
+		kfree(priv);
+		return -ENOMEM;
+	}
+
+	irq_set_default_host(domain);
+	pr_info("%pOFP: SH7751 Interrupt controller (%s external IRQ)",
+		intc, priv->irlm ? "4 lines" : "15 level");
+	return 0;
+}
+
+IRQCHIP_DECLARE(sh_7751_intc,
+		"renesas,sh7751-intc", sh7751_intc_of_init);
-- 
2.39.2

Re: [DO NOT MERGE v5 16/37] irqchip: Add SH7751 INTC driver

[Thomas Gleixner]

On Tue, Dec 05 2023 at 18:45, Yoshinori Sato wrote:
> +static void endisable_irq(struct irq_data *data, int enable)

bool enable?

> +{
> +	struct sh7751_intc_priv *priv;
> +	unsigned int irq;
> +
> +	priv = irq_data_to_priv(data);
> +
> +	irq = irqd_to_hwirq(data);
> +	if (!is_valid_irq(irq)) {
> +		/* IRQ out of range */
> +		pr_warn_once("%s: IRQ %u is out of range\n", __FILE__, irq);
> +		return;
> +	}
> +
> +	if (irq <= MAX_IRL && !priv->irlm)
> +		/* IRL encoded external interrupt */
> +		/* disable for SR.IMASK */
> +		update_sr_imask(irq - IRQ_START, enable);
> +	else
> +		/* Internal peripheral interrupt */
> +		/* mask for IPR priority 0 */
> +		update_ipr(priv, irq, enable);

Lacks curly brackets on the if/else

> +static int irq_sh7751_map(struct irq_domain *h, unsigned int virq,
> +			  irq_hw_number_t hw_irq_num)
> +{
> +	irq_set_chip_and_handler(virq, &sh7751_irq_chip, handle_level_irq);
> +	irq_get_irq_data(virq)->chip_data = h->host_data;
> +	irq_modify_status(virq, IRQ_NOREQUEST, IRQ_NOPROBE);
> +	return 0;
> +}
> +static const struct irq_domain_ops irq_ops = {

Newline before 'static ...'

> +	.map    = irq_sh7751_map,
> +	.xlate  = irq_domain_xlate_onecell,
> +};
> +
> +static int __init load_ipr_map(struct device_node *intc,
> +			       struct sh7751_intc_priv *priv)
> +{
> +	struct property *ipr_map;
> +	unsigned int num_ipr, i;
> +	struct ipr *ipr;
> +	const __be32 *p;
> +	u32 irq;
> +
> +	ipr_map = of_find_property(intc, "renesas,ipr-map", &num_ipr);
> +	if (IS_ERR(ipr_map))
> +		return PTR_ERR(ipr_map);
> +	num_ipr /= sizeof(u32);
> +	/* 3words per entry. */
> +	if (num_ipr % 3)

Three words per ... But you can spare the comment by doing:

        if (num_ipr % WORDS_PER_ENTRY)

> +		goto error1;
> +	num_ipr /= 3;
> +static int __init sh7751_intc_of_init(struct device_node *intc,
> +				      struct device_node *parent)
> +{
> +	struct sh7751_intc_priv *priv;
> +	void __iomem *base, *base2;
> +	struct irq_domain *domain;
> +	u16 icr;
> +	int ret;
> +
> +	base = of_iomap(intc, 0);
> +	base2 = of_iomap(intc, 1);
> +	if (!base || !base2) {
> +		pr_err("%pOFP: Invalid register definition\n", intc);

What unmaps 'base' if 'base' is valid and base2 == NULL?

> +		return -EINVAL;
> +	}
> +
> +	priv = kzalloc(sizeof(struct sh7751_intc_priv), GFP_KERNEL);
> +	if (priv == NULL)
> +		return -ENOMEM;

Leaks base[2] maps, no?

> +	ret = load_ipr_map(intc, priv);
> +	if (ret < 0) {
> +		kfree(priv);
> +		return ret;
> +	}
> +
> +	priv->base = base;
> +	priv->intpri00 = base2;
> +
> +	if (of_property_read_bool(intc, "renesas,irlm")) {
> +		priv->irlm = true;
> +		icr = __raw_readw(priv->base + R_ICR);
> +		icr |= ICR_IRLM;
> +		__raw_writew(icr, priv->base + R_ICR);
> +	}
> +
> +	domain = irq_domain_add_linear(intc, NR_IRQS, &irq_ops, priv);
> +	if (domain == NULL) {
> +		pr_err("%pOFP: cannot initialize irq domain\n", intc);
> +		kfree(priv);
> +		return -ENOMEM;
> +	}
> +
> +	irq_set_default_host(domain);
> +	pr_info("%pOFP: SH7751 Interrupt controller (%s external IRQ)",
> +		intc, priv->irlm ? "4 lines" : "15 level");
> +	return 0;
> +}
> +
> +IRQCHIP_DECLARE(sh_7751_intc,
> +		"renesas,sh7751-intc", sh7751_intc_of_init);

One line please.

Thanks,

        tglx

[DO NOT MERGE v5 17/37] dt-bindings: interrupt-controller: renesas,sh7751-intc: Add json-schema

[Yoshinori Sato]

Renesas SH7751 INTC json-schema.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../renesas,sh7751-intc.yaml                  | 105 ++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml
new file mode 100644
index 000000000000..9d05c10f5c32
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/renesas,sh7751-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SH7751 Interrupt Controller
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+properties:
+  compatible:
+    items:
+      - const: renesas,sh7751-intc
+
+  '#interrupt-cells':
+    const: 1
+
+  interrupt-controller: true
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: ICR
+      - const: INTPRI00
+
+  renesas,icr-irlm:
+    type: boolean
+    description: If true ICR.IRLM=1
+
+  renesas,ipr-map:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: |
+      IRQ to IPR mapping definition.
+      1st - INTEVT
+      2nd - Register
+      3rd - bit index
+
+required:
+  - compatible
+  - '#interrupt-cells'
+  - interrupt-controller
+  - reg
+  - reg-names
+  - renesas,ipr-map
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/sh_intc.h>
+    shintc: interrupt-controller@ffd00000 {
+            compatible = "renesas,sh7751-intc";
+            #interrupt-cells = <1>;
+            interrupt-controller;
+            reg = <0xffd00000 14>, <0xfe080000 128>;
+            reg-names = "ICR", "INTPRI00";
+            renesas,ipr-map = <0x240 IPRD IPR_B12>, /* IRL0 */
+                              <0x2a0 IPRD IPR_B8>,  /* IRL1 */
+                              <0x300 IPRD IPR_B4>,  /* IRL2 */
+                              <0x360 IPRD IPR_B0>,  /* IRL3 */
+                              <0x400 IPRA IPR_B12>, /* TMU0 */
+                              <0x420 IPRA IPR_B8>,  /* TMU1 */
+                              <0x440 IPRA IPR_B4>,  /* TMU2 TNUI */
+                              <0x460 IPRA IPR_B4>,  /* TMU2 TICPI */
+                              <0x480 IPRA IPR_B0>,  /* RTC ATI */
+                              <0x4a0 IPRA IPR_B0>,  /* RTC PRI */
+                              <0x4c0 IPRA IPR_B0>,  /* RTC CUI */
+                              <0x4e0 IPRB IPR_B4>,  /* SCI ERI */
+                              <0x500 IPRB IPR_B4>,  /* SCI RXI */
+                              <0x520 IPRB IPR_B4>,  /* SCI TXI */
+                              <0x540 IPRB IPR_B4>,  /* SCI TEI */
+                              <0x560 IPRB IPR_B12>, /* WDT */
+                              <0x580 IPRB IPR_B8>,  /* REF RCMI */
+                              <0x5a0 IPRB IPR_B4>,  /* REF ROVI */
+                              <0x600 IPRC IPR_B0>,  /* H-UDI */
+                              <0x620 IPRC IPR_B12>, /* GPIO */
+                              <0x640 IPRC IPR_B8>,  /* DMAC DMTE0 */
+                              <0x660 IPRC IPR_B8>,  /* DMAC DMTE1 */
+                              <0x680 IPRC IPR_B8>,  /* DMAC DMTE2 */
+                              <0x6a0 IPRC IPR_B8>,  /* DMAC DMTE3 */
+                              <0x6c0 IPRC IPR_B8>,  /* DMAC DMAE */
+                              <0x700 IPRC IPR_B4>,  /* SCIF ERI */
+                              <0x720 IPRC IPR_B4>,  /* SCIF RXI */
+                              <0x740 IPRC IPR_B4>,  /* SCIF BRI */
+                              <0x760 IPRC IPR_B4>,  /* SCIF TXI */
+                              <0x780 IPRC IPR_B8>,  /* DMAC DMTE4 */
+                              <0x7a0 IPRC IPR_B8>,  /* DMAC DMTE5 */
+                              <0x7c0 IPRC IPR_B8>,  /* DMAC DMTE6 */
+                              <0x7e0 IPRC IPR_B8>,  /* DMAC DMTE7 */
+                              <0xa00 INTPRI00 IPR_B0>,      /* PCIC PCISERR */
+                              <0xa20 INTPRI00 IPR_B4>,      /* PCIC PCIDMA3 */
+                              <0xa40 INTPRI00 IPR_B4>,      /* PCIC PCIDMA2 */
+                              <0xa60 INTPRI00 IPR_B4>,      /* PCIC PCIDMA1 */
+                              <0xa80 INTPRI00 IPR_B4>,      /* PCIC PCIDMA0 */
+                              <0xaa0 INTPRI00 IPR_B4>,      /* PCIC PCIPWON */
+                              <0xac0 INTPRI00 IPR_B4>,      /* PCIC PCIPWDWN */
+                              <0xae0 INTPRI00 IPR_B4>,      /* PCIC PCIERR */
+                              <0xb00 INTPRI00 IPR_B8>,      /* TMU3 */
+                              <0xb80 INTPRI00 IPR_B12>;     /* TMU4 */
+    };
+...
-- 
2.39.2

Re: [DO NOT MERGE v5 17/37] dt-bindings: interrupt-controller: renesas,sh7751-intc: Add json-schema

[Linus Walleij]

Hi Yoshinori,

thanks for your patch!

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:

> +  renesas,icr-irlm:
> +    type: boolean
> +    description: If true ICR.IRLM=1

That's a bit hard to understand. I suppose it's something that need to sometimes
be changed for a system so would be good to document it properly.

> +  renesas,ipr-map:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description: |
> +      IRQ to IPR mapping definition.
> +      1st - INTEVT
> +      2nd - Register
> +      3rd - bit index

Isn't this table always the same for a certain SoC, e.g. compatible
"renesas,sh7751-intc"?

Then don't keep it in the device tree, just look it up per-soc from a
table in the driver.

Other than that it looks good to me.

Yours,
Linus Walleij

Re: [DO NOT MERGE v5 17/37] dt-bindings: interrupt-controller: renesas,sh7751-intc: Add json-schema

[Geert Uytterhoeven]

Hi Sato-san,

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> Renesas SH7751 INTC json-schema.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

Thanks for your patch!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml

> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/sh_intc.h>

make dt_binding_check:

fatal error: dt-bindings/interrupt-controller/sh_intc.h: No such file
or directory

sh7751-intc.h

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [DO NOT MERGE v5 17/37] dt-bindings: interrupt-controller: renesas,sh7751-intc: Add json-schema

[Krzysztof Kozlowski]

On 05/12/2023 10:45, Yoshinori Sato wrote:
> Renesas SH7751 INTC json-schema.
> 

This should not be a separate commit from the header bindings. I already
gave such feedback before. Binding headers and bindings documentation
for the same block come together.

> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  .../renesas,sh7751-intc.yaml                  | 105 ++++++++++++++++++
>  1 file changed, 105 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml
> new file mode 100644
> index 000000000000..9d05c10f5c32
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-intc.yaml
> @@ -0,0 +1,105 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/renesas,sh7751-intc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas SH7751 Interrupt Controller
> +
> +maintainers:
> +  - Yoshinori Sato <ysato@users.sourceforge.jp>
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: renesas,sh7751-intc
> +
> +  '#interrupt-cells':
> +    const: 1
> +
> +  interrupt-controller: true
> +
> +  reg:
> +    maxItems: 2
> +
> +  reg-names:
> +    items:
> +      - const: ICR
> +      - const: INTPRI00

Both lowercase

> +
> +  renesas,icr-irlm:
> +    type: boolean
> +    description: If true ICR.IRLM=1

Unfortunately neither description nor property name tells me anything.
Description basically copies property name, so it's not useful.

> +
> +  renesas,ipr-map:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description: |
> +      IRQ to IPR mapping definition.
> +      1st - INTEVT
> +      2nd - Register
> +      3rd - bit index
> +
> +required:
> +  - compatible
> +  - '#interrupt-cells'
> +  - interrupt-controller
> +  - reg
> +  - reg-names
> +  - renesas,ipr-map
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/sh_intc.h>
> +    shintc: interrupt-controller@ffd00000 {
> +            compatible = "renesas,sh7751-intc";
> +            #interrupt-cells = <1>;
> +            interrupt-controller;
> +            reg = <0xffd00000 14>, <0xfe080000 128>;
> +            reg-names = "ICR", "INTPRI00";

reg should be the second property, reg-names should follow.

Best regards,
Krzysztof

[DO NOT MERGE v5 18/37] irqchip: SH7751 IRL external encoder with enable gate.

[Yoshinori Sato]

SH7751 have 15 level external interrupt.
It is typically connected to the CPU through a priority encoder
that can suppress requests.
This driver provides a way to control those hardware with irqchip.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/irqchip/Kconfig                 |   7 +
 drivers/irqchip/Makefile                |   2 +
 drivers/irqchip/irq-renesas-sh7751irl.c | 227 ++++++++++++++++++++++++
 3 files changed, 236 insertions(+)
 create mode 100644 drivers/irqchip/irq-renesas-sh7751irl.c

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 658523f65b1d..2a061c01f381 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -687,4 +687,11 @@ config RENESAS_SH7751_INTC
 	  Support for the Renesas SH7751 On-chip interrupt controller.
 	  And external interrupt encoder for some targets.
 
+config RENESAS_SH7751IRL_INTC
+	bool "Renesas SH7751 based target IRL encoder support."
+	depends on RENESAS_SH7751_INTC
+	help
+	  Support for External Interrupt encoder
+	  on the some Renesas SH7751 based target.
+
 endmenu
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 26c91d075e25..91df16726b1f 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -121,3 +121,5 @@ obj-$(CONFIG_APPLE_AIC)			+= irq-apple-aic.o
 obj-$(CONFIG_MCHP_EIC)			+= irq-mchp-eic.o
 obj-$(CONFIG_SUNPLUS_SP7021_INTC)	+= irq-sp7021-intc.o
 obj-$(CONFIG_RENESAS_SH7751_INTC)	+= irq-renesas-sh7751.o
+obj-$(CONFIG_RENESAS_SH7751IRL_INTC)	+= irq-renesas-sh7751irl.o
+
diff --git a/drivers/irqchip/irq-renesas-sh7751irl.c b/drivers/irqchip/irq-renesas-sh7751irl.c
new file mode 100644
index 000000000000..99ee5bf9fb1e
--- /dev/null
+++ b/drivers/irqchip/irq-renesas-sh7751irl.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SH7751 based board IRL encoder driver
+ * (Renesas RTS7751R2D / IO DATA DEVICE LANDISK, USL-5P)
+ *
+ * Copyright (C) 2023 Yoshinori Sato
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/bitops.h>
+
+struct sh7751irl_intc_priv {
+	struct irq_domain *irq_domain;
+	void __iomem	  *base;
+	unsigned int	  width;
+	bool		  invert;
+	u32		  enable_bit[NR_IRL];
+};
+
+static inline unsigned long get_reg(void __iomem *addr, unsigned int w)
+{
+	switch (w) {
+	case 8:
+		return __raw_readb(addr);
+	case 16:
+		return __raw_readw(addr);
+	case 32:
+		return __raw_readl(addr);
+	default:
+		/* The size is checked when reading the properties. */
+		pr_err("%s: Invalid width %d", __FILE__, w);
+		return 0;
+	}
+}
+
+static inline void set_reg(void __iomem *addr, unsigned int w, unsigned long val)
+{
+	switch (w) {
+	case 8:
+		__raw_writeb(val, addr);
+		break;
+	case 16:
+		__raw_writew(val, addr);
+		break;
+	case 32:
+		__raw_writel(val, addr);
+		break;
+	default:
+		pr_err("%s: Invalid width %d", __FILE__, w);
+	}
+}
+
+static inline struct sh7751irl_intc_priv *irq_data_to_priv(struct irq_data *data)
+{
+	return data->domain->host_data;
+}
+
+static void irl_endisable(struct irq_data *data, unsigned int enable)
+{
+	struct sh7751irl_intc_priv *priv;
+	unsigned long val;
+	unsigned int irl;
+
+	priv = irq_data_to_priv(data);
+	irl = irqd_to_hwirq(data) - IRL_BASE_IRQ;
+
+	if (irl < NR_IRL && priv->enable_bit[irl] < priv->width) {
+		if (priv->invert)
+			enable = !enable;
+
+		val = get_reg(priv->base, priv->width);
+		if (enable)
+			set_bit(priv->enable_bit[irl], &val);
+		else
+			clear_bit(priv->enable_bit[irl], &val);
+		set_reg(priv->base, priv->width, val);
+	} else {
+		pr_err("%s: Invalid register define in IRL %u", __FILE__, irl);
+	}
+}
+
+static void sh7751irl_intc_disable_irq(struct irq_data *data)
+{
+	irl_endisable(data, 0);
+}
+
+static void sh7751irl_intc_enable_irq(struct irq_data *data)
+{
+	irl_endisable(data, 1);
+}
+
+static struct irq_chip sh7751irl_intc_chip = {
+	.name		= "SH7751IRL-INTC",
+	.irq_enable	= sh7751irl_intc_enable_irq,
+	.irq_disable	= sh7751irl_intc_disable_irq,
+};
+
+static int sh7751irl_intc_map(struct irq_domain *h, unsigned int virq,
+			       irq_hw_number_t hw_irq_num)
+{
+	irq_set_chip_and_handler(virq, &sh7751irl_intc_chip, handle_level_irq);
+	irq_get_irq_data(virq)->chip_data = h->host_data;
+	irq_modify_status(virq, IRQ_NOREQUEST, IRQ_NOPROBE);
+	return 0;
+}
+
+static int sh7751irl_intc_translate(struct irq_domain *domain,
+			       struct irq_fwspec *fwspec, unsigned long *hwirq,
+			       unsigned int *type)
+{
+	if (fwspec->param[0] > NR_IRL)
+		return -EINVAL;
+
+	switch (fwspec->param_count) {
+	case 2:
+		*type = fwspec->param[1];
+		fallthrough;
+	case 1:
+		*hwirq = fwspec->param[0] + IRL_BASE_IRQ;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct irq_domain_ops sh7751irl_intc_domain_ops = {
+	.map = sh7751irl_intc_map,
+	.translate = sh7751irl_intc_translate,
+};
+
+static int __init load_irq_bit(struct device_node *node, struct sh7751irl_intc_priv *priv)
+{
+	struct property *enable_map;
+	const __be32 *p;
+	u32 nr_bits;
+	u32 irl;
+	int ret;
+
+	/* Fill in unused */
+	memset(priv->enable_bit, ~0, sizeof(priv->enable_bit));
+
+	enable_map = of_find_property(node, "renesas,enable-bit", &nr_bits);
+	if (IS_ERR(enable_map))
+		return PTR_ERR(enable_map);
+
+	nr_bits /= sizeof(u32);
+	/* 2words per entry. */
+	if (nr_bits % 2)
+		return -EINVAL;
+	nr_bits /= 2;
+	if (nr_bits > NR_IRL)
+		return -EINVAL;
+
+	ret = nr_bits;
+	p = NULL;
+	for (; nr_bits > 0; nr_bits--) {
+		/* 1st word - IRL */
+		p = of_prop_next_u32(enable_map, p, &irl);
+		if (!p || irl > NR_IRL)
+			return -EINVAL;
+		/* 2nd word - enable bit index */
+		p = of_prop_next_u32(enable_map, p, &priv->enable_bit[irl]);
+		if (priv->enable_bit[irl] >= priv->width)
+			return -EINVAL;
+	}
+	return ret;
+}
+
+static int __init sh7751irl_init(struct device_node *node, struct device_node *parent)
+{
+	struct sh7751irl_intc_priv *priv;
+	struct irq_domain *d;
+	void __iomem *base;
+	int ret = 0;
+
+	base = of_iomap(node, 0);
+	if (!base)
+		ret = -EINVAL;
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->base = base;
+	of_property_read_u32(node, "renesas,width", &priv->width);
+	if (priv->width != 8 && priv->width != 16 && priv->width != 32) {
+		pr_err("%pOFP: Invalid register width.\n", node);
+		ret = -EINVAL;
+		goto error;
+	}
+
+	priv->invert = of_property_read_bool(node, "renesas,set-to-disable");
+
+	ret = load_irq_bit(node, priv);
+	if (ret < 0) {
+		pr_err("%pOFP: Invalid register define.\n", node);
+		goto error;
+	}
+
+	d = irq_domain_add_tree(node, &sh7751irl_intc_domain_ops, priv);
+	if (d == NULL) {
+		pr_err("%pOFP: cannot initialize irq domain\n", node);
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	priv->irq_domain = d;
+	irq_domain_update_bus_token(d, DOMAIN_BUS_WIRED);
+	pr_info("%pOFP: SH7751 External Interrupt encoder (input=%d)", node, ret);
+	return 0;
+error:
+	kfree(priv);
+	return ret;
+}
+
+IRQCHIP_DECLARE(renesas_sh7751_irl, "renesas,sh7751-irl-ext", sh7751irl_init);
-- 
2.39.2

[DO NOT MERGE v5 19/37] dt-bindings: interrupt-controller: renesas,sh7751-irl-ext: Add json-schema

[Yoshinori Sato]

Renesas SH7751 external interrupt encoder json-schema.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../renesas,sh7751-irl-ext.yaml               | 83 +++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml
new file mode 100644
index 000000000000..ba4fe2e4d749
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/renesas,sh7751-irl-ext.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SH7751 IRL external encoder with enable regs.
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+description: |
+  This is the generally used external interrupt encoder on SH7751 based boards.
+
+properties:
+  compatible:
+    items:
+      - const: renesas,sh7751-irl-ext
+
+  reg:
+    minItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+  '#address-cells':
+    const: 0
+
+  '#size-cells':
+    const: 0
+
+  renesas,width:
+    description: Enable register width
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [8, 16, 32]
+
+  renesas,set-to-disable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Setting this flag to 1 disables it.
+
+  renesas,enable-bit:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description: |
+      IRL enable register bit mapping
+      1st word IRL
+      2nd word bit index of enable register
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - '#interrupt-cells'
+  - renesas,width
+  - renesas,enable-bit
+
+additionalProperties: false
+
+examples:
+  - |
+    r2dintc: sh7751irl_encoder@a4000000 {
+        compatible = "renesas,sh7751-irl-ext";
+        reg = <0xa4000000 0x02>;
+        interrupt-controller;
+        #address-cells = <0>;
+        #size-cells = <0>;
+        #interrupt-cells = <1>;
+        renesas,width = <16>;
+        renesas,enable-bit = <0 11>,            /* PCI INTD */
+                             <1 9>,             /* CF IDE */
+                             <2 8>,             /* CF CD */
+                             <3 12>,            /* PCI INTC */
+                             <4 10>,            /* SM501 */
+                             <5 6>,             /* KEY */
+                             <6 5>,             /* RTC ALARM */
+                             <7 4>,             /* RTC T */
+                             <8 7>,             /* SDCARD */
+                             <9 14>,            /* PCI INTA */
+                             <10 13>,           /* PCI INTB */
+                             <11 0>,            /* EXT */
+                             <12 15>;           /* TP */
+    };
-- 
2.39.2

Re: [DO NOT MERGE v5 19/37] dt-bindings: interrupt-controller: renesas,sh7751-irl-ext: Add json-schema

[Rob Herring]

On Tue, Dec 05, 2023 at 06:45:38PM +0900, Yoshinori Sato wrote:
> Renesas SH7751 external interrupt encoder json-schema.
> 
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  .../renesas,sh7751-irl-ext.yaml               | 83 +++++++++++++++++++
>  1 file changed, 83 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml
> new file mode 100644
> index 000000000000..ba4fe2e4d749
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,sh7751-irl-ext.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/renesas,sh7751-irl-ext.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas SH7751 IRL external encoder with enable regs.

IRL? In Real Life?

> +
> +maintainers:
> +  - Yoshinori Sato <ysato@users.sourceforge.jp>
> +
> +description: |

Don't need '|' if no formatting to preserve.

> +  This is the generally used external interrupt encoder on SH7751 based boards.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: renesas,sh7751-irl-ext
> +
> +  reg:
> +    minItems: 1

maxItems: 1

> +
> +  interrupt-controller: true
> +
> +  '#interrupt-cells':
> +    const: 1
> +
> +  '#address-cells':
> +    const: 0
> +
> +  '#size-cells':
> +    const: 0

Don't need #size-cells.

> +
> +  renesas,width:
> +    description: Enable register width
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [8, 16, 32]

reg-io-width is the standard property for this purpose.

> +
> +  renesas,set-to-disable:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: Setting this flag to 1 disables it.

You can't set a boolean to 1. What is 'it' here? 

> +
> +  renesas,enable-bit:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array

You've described a 2 entry matrix, not an array.

> +    description: |
> +      IRL enable register bit mapping
> +      1st word IRL
> +      2nd word bit index of enable register

Needs a better description of what this is for. If it is per SoC then it 
should be implied from the compatible string.


> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupt-controller
> +  - '#interrupt-cells'
> +  - renesas,width
> +  - renesas,enable-bit
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    r2dintc: sh7751irl_encoder@a4000000 {

interrupt-controller@...

Drop unused labels.

> +        compatible = "renesas,sh7751-irl-ext";
> +        reg = <0xa4000000 0x02>;
> +        interrupt-controller;
> +        #address-cells = <0>;
> +        #size-cells = <0>;
> +        #interrupt-cells = <1>;
> +        renesas,width = <16>;
> +        renesas,enable-bit = <0 11>,            /* PCI INTD */
> +                             <1 9>,             /* CF IDE */
> +                             <2 8>,             /* CF CD */
> +                             <3 12>,            /* PCI INTC */
> +                             <4 10>,            /* SM501 */
> +                             <5 6>,             /* KEY */
> +                             <6 5>,             /* RTC ALARM */
> +                             <7 4>,             /* RTC T */
> +                             <8 7>,             /* SDCARD */
> +                             <9 14>,            /* PCI INTA */
> +                             <10 13>,           /* PCI INTB */
> +                             <11 0>,            /* EXT */
> +                             <12 15>;           /* TP */

Looks like the first value is just the index of the entry, so drop it 
and use the index.

But better yet, these are all per interrupt values. Put them into the 
interrupt cell values instead. For example the RTC would have something 
like:

interrupts = <6 5>, <7 4>;

Though I do wonder if you really need the first value, or that was just 
interrupt numbers you made up and then created this mapping?

Rob

[DO NOT MERGE v5 20/37] serial: sh-sci: fix SH4 OF support.

[Yoshinori Sato]

- fix earlycon name.
- fix earlyprintk hung (NULL pointer reference).

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/tty/serial/Kconfig  | 2 +-
 drivers/tty/serial/sh-sci.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 732c893c8d16..56d635371fd3 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -658,7 +658,7 @@ config SERIAL_SH_SCI_EARLYCON
 	depends on SERIAL_SH_SCI=y
 	select SERIAL_CORE_CONSOLE
 	select SERIAL_EARLYCON
-	default ARCH_RENESAS
+	default ARCH_RENESAS || SUPERH
 
 config SERIAL_SH_SCI_DMA
 	bool "DMA support" if EXPERT
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 84ab434c94ba..0a33581be08b 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -2720,7 +2720,7 @@ static int sci_remap_port(struct uart_port *port)
 	if (port->membase)
 		return 0;
 
-	if (port->dev->of_node || (port->flags & UPF_IOREMAP)) {
+	if ((port->dev && port->dev->of_node) || (port->flags & UPF_IOREMAP)) {
 		port->membase = ioremap(port->mapbase, sport->reg_size);
 		if (unlikely(!port->membase)) {
 			dev_err(port->dev, "can't remap port#%d\n", port->line);
@@ -3555,8 +3555,8 @@ static int __init hscif_early_console_setup(struct earlycon_device *device,
 
 OF_EARLYCON_DECLARE(sci, "renesas,sci", sci_early_console_setup);
 OF_EARLYCON_DECLARE(scif, "renesas,scif", scif_early_console_setup);
-OF_EARLYCON_DECLARE(scif, "renesas,scif-r7s9210", rzscifa_early_console_setup);
-OF_EARLYCON_DECLARE(scif, "renesas,scif-r9a07g044", rzscifa_early_console_setup);
+OF_EARLYCON_DECLARE(rzscifa, "renesas,scif-r7s9210", rzscifa_early_console_setup);
+OF_EARLYCON_DECLARE(rzscifa, "renesas,scif-r9a07g044", rzscifa_early_console_setup);
 OF_EARLYCON_DECLARE(scifa, "renesas,scifa", scifa_early_console_setup);
 OF_EARLYCON_DECLARE(scifb, "renesas,scifb", scifb_early_console_setup);
 OF_EARLYCON_DECLARE(hscif, "renesas,hscif", hscif_early_console_setup);
-- 
2.39.2

Re: [DO NOT MERGE v5 20/37] serial: sh-sci: fix SH4 OF support.

[Geert Uytterhoeven]

Hi Sato-san,

Thanks for your patch!

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> - fix earlycon name.
> - fix earlyprintk hung (NULL pointer reference).

- fix SERIAL_SH_SCI_EARLYCON enablement

> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

> --- a/drivers/tty/serial/Kconfig
> +++ b/drivers/tty/serial/Kconfig
> @@ -658,7 +658,7 @@ config SERIAL_SH_SCI_EARLYCON
>         depends on SERIAL_SH_SCI=y
>         select SERIAL_CORE_CONSOLE
>         select SERIAL_EARLYCON
> -       default ARCH_RENESAS
> +       default ARCH_RENESAS || SUPERH
>
>  config SERIAL_SH_SCI_DMA
>         bool "DMA support" if EXPERT

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[DO NOT MERGE v5 21/37] dt-bindings: serial: renesas,scif: Add scif-sh7751.

[Yoshinori Sato]

Add Renesas SH7751 SCIF.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 Documentation/devicetree/bindings/serial/renesas,scif.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index 4610a5bd580c..a774f16400c2 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -17,6 +17,7 @@ properties:
     oneOf:
       - items:
           - enum:
+              - renesas,scif-sh7751       # SH7751
               - renesas,scif-r7s72100     # RZ/A1H
           - const: renesas,scif           # generic SCIF compatible UART
 
-- 
2.39.2

Re: [DO NOT MERGE v5 21/37] dt-bindings: serial: renesas,scif: Add scif-sh7751.

[Geert Uytterhoeven]

Hi Sato-san,

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> Add Renesas SH7751 SCIF.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -17,6 +17,7 @@ properties:
>      oneOf:
>        - items:
>            - enum:
> +              - renesas,scif-sh7751       # SH7751

Please preserve alphabetical sort order.
The actual compatible value LGTM.

>                - renesas,scif-r7s72100     # RZ/A1H
>            - const: renesas,scif           # generic SCIF compatible UART

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[DO NOT MERGE v5 22/37] dt-bindings: display: smi,sm501: SMI SM501 binding json-schema

[Yoshinori Sato]

Define SM501 functions and modes.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../bindings/display/smi,sm501.yaml           | 134 ++++++++++++++++++
 include/dt-bindings/display/sm501.h           |  25 ++++
 2 files changed, 159 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/smi,sm501.yaml
 create mode 100644 include/dt-bindings/display/sm501.h

diff --git a/Documentation/devicetree/bindings/display/smi,sm501.yaml b/Documentation/devicetree/bindings/display/smi,sm501.yaml
new file mode 100644
index 000000000000..df46600b8d4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/smi,sm501.yaml
@@ -0,0 +1,134 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/smi,sm501.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silicon Motion SM501 Mobile Multimedia Companion Chip
+
+maintainers:
+  - Yoshinori Sato <ysato@user.sourceforge.jp>
+
+description: |
+  These DT bindings describe the SM501.
+
+properties:
+  compatible:
+    const:
+      smi,sm501
+
+  reg:
+    maxItems: 2
+    description: |
+     First entry: System Configuration register
+     Second entry: IO space (Display Controller register)
+
+  interrupts:
+    description: SM501 interrupt to the cpu should be described here.
+
+  interrupt-name: true
+
+  mode:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: select a video mode
+
+  edid:
+    description: |
+      verbatim EDID data block describing attached display.
+      Data from the detailed timing descriptor will be used to
+      program the display controller.
+
+  little-endian:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: available on big endian systems, to set different foreign endian.
+  big-endian:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: available on little endian systems, to set different foreign endian.
+
+  swap-fb-endian:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: swap framebuffer byteorder.
+
+  route-crt-panel:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Panel output merge to CRT.
+
+  crt:
+    description: CRT output control
+
+  panel:
+    description: Panel output control
+
+  bpp:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Color depth
+
+  smi,flags:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Display control flags.
+
+  smi,devices:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: SM501 device function select.
+
+  smi,mclk:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: mclk frequency.
+
+  smi,m1xclk:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: m1xclk frequency.
+
+  smi,misc-timing:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Miscellaneous Timing reg value.
+
+  smi,misc-control:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Miscellaneous Control reg value.
+
+  smi,gpio-low:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: GPIO0 to 31 Control reg value.
+
+  smi,gpio-high:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: GPIO32 to 63 Control reg value.
+
+  smi,gpio-i2c:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 5
+    description: |
+      GPIO I2C bus number
+      1st field - I2C bus number
+      2nd Field - GPIO SDA
+      3rd Field - GPIO SCL
+      4th Field - Timeout
+      5th Field - udelay
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+
+examples:
+  # MPC5200
+  - |
+    display@1,0 {
+        compatible = "smi,sm501";
+        reg = <0x00000000 0x00800000
+               0x03e00000 0x00200000>;
+        interrupts = <1 1 3>;
+        mode = "640x480-32@60";
+        edid = [00 ff ff ff ff ff ff 00 00 00 00 00 00 00 00 00
+                00 00 01 04 00 00 00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 f0 0a 80 fb 20 e0 25 10 32 60
+                02 00 00 00 00 00 00 06 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 bd];
+    };
diff --git a/include/dt-bindings/display/sm501.h b/include/dt-bindings/display/sm501.h
new file mode 100644
index 000000000000..1be8490d7635
--- /dev/null
+++ b/include/dt-bindings/display/sm501.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+
+/* Platform data definitions */
+
+#define SM501FB_FLAG_USE_INIT_MODE	(1<<0)
+#define SM501FB_FLAG_DISABLE_AT_EXIT	(1<<1)
+#define SM501FB_FLAG_USE_HWCURSOR	(1<<2)
+#define SM501FB_FLAG_USE_HWACCEL	(1<<3)
+#define SM501FB_FLAG_PANEL_NO_FPEN	(1<<4)
+#define SM501FB_FLAG_PANEL_NO_VBIASEN	(1<<5)
+#define SM501FB_FLAG_PANEL_INV_FPEN	(1<<6)
+#define SM501FB_FLAG_PANEL_INV_VBIASEN	(1<<7)
+
+#define SM501_USE_USB_HOST	(1<<0)
+#define SM501_USE_USB_SLAVE	(1<<1)
+#define SM501_USE_SSP0		(1<<2)
+#define SM501_USE_SSP1		(1<<3)
+#define SM501_USE_UART0		(1<<4)
+#define SM501_USE_UART1		(1<<5)
+#define SM501_USE_FBACCEL	(1<<6)
+#define SM501_USE_AC97		(1<<7)
+#define SM501_USE_I2S		(1<<8)
+#define SM501_USE_GPIO		(1<<9)
+
+#define SM501_USE_ALL		(0xffffffff)
-- 
2.39.2

Re: [DO NOT MERGE v5 22/37] dt-bindings: display: smi,sm501: SMI SM501 binding json-schema

[Rob Herring]

On Tue, 05 Dec 2023 18:45:41 +0900, Yoshinori Sato wrote:
> Define SM501 functions and modes.
> 
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  .../bindings/display/smi,sm501.yaml           | 134 ++++++++++++++++++
>  include/dt-bindings/display/sm501.h           |  25 ++++
>  2 files changed, 159 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/smi,sm501.yaml
>  create mode 100644 include/dt-bindings/display/sm501.h
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/smi,sm501.yaml: interrupt-name: missing type definition
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/smi,sm501.yaml: edid: missing type definition
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/smi,sm501.yaml: crt: missing type definition

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/f671beae8a8ebfd361f4c903bccce713135a169f.1701768028.git.ysato@users.sourceforge.jp

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

Re: [DO NOT MERGE v5 22/37] dt-bindings: display: smi,sm501: SMI SM501 binding json-schema

[Arnd Bergmann]

On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
> Define SM501 functions and modes.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  .../bindings/display/smi,sm501.yaml           | 134 ++++++++++++++++++
>  include/dt-bindings/display/sm501.h           |  25 ++++

It looks like we already have a binding at
Documentation/devicetree/bindings/display/sm501fb.txt

> +  little-endian:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: available on big endian systems, to set different 
> foreign endian.
> +  big-endian:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: available on little endian systems, to set different 
> foreign endian.
> +
> +  swap-fb-endian:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: swap framebuffer byteorder.

Why do you need both the "swap" and the specific little/big
properties?

> +  crt:
> +    description: CRT output control
> +
> +  panel:
> +    description: Panel output control

What type are these?

> +  smi,misc-timing:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: Miscellaneous Timing reg value.
> +
> +  smi,misc-control:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: Miscellaneous Control reg value.
> +
> +  smi,gpio-low:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: GPIO0 to 31 Control reg value.
> +
> +  smi,gpio-high:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: GPIO32 to 63 Control reg value.

Register values should generally not go into DT


> +
> +  smi,gpio-i2c:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 5
> +    description: |
> +      GPIO I2C bus number
> +      1st field - I2C bus number
> +      2nd Field - GPIO SDA
> +      3rd Field - GPIO SCL
> +      4th Field - Timeout
> +      5th Field - udelay

Instead of a bus number and other fields, I think
this should reference an i2c device.

      Arnd

Re: [DO NOT MERGE v5 22/37] dt-bindings: display: smi,sm501: SMI SM501 binding json-schema

[Krzysztof Kozlowski]

On 05/12/2023 14:36, Arnd Bergmann wrote:
> On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
>> Define SM501 functions and modes.
>>
>> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
>> ---
>>  .../bindings/display/smi,sm501.yaml           | 134 ++++++++++++++++++
>>  include/dt-bindings/display/sm501.h           |  25 ++++
> 
> It looks like we already have a binding at
> Documentation/devicetree/bindings/display/sm501fb.txt

Which I asked to do three months ago. Several comments were simply
ignored and never responded to.

Best regards,
Krzysztof

[DO NOT MERGE v5 23/37] mfd: sm501: Convert platform_data to OF property

[Yoshinori Sato]

Various parameters of SM501 can be set using platform_data,
so parameters cannot be passed in the DeviceTree target.
Expands the parameters set in platform_data so that they can be
specified using DeviceTree properties.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 drivers/mfd/sm501.c           | 99 +++++++++++++++++++++++++++++++++++
 drivers/video/fbdev/sm501fb.c | 82 +++++++++++++++++++++++++++++
 2 files changed, 181 insertions(+)

diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 28027982cf69..f0104fdf0f34 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1370,6 +1370,99 @@ static int sm501_init_dev(struct sm501_devdata *sm)
 	return 0;
 }
 
+static void sm501_of_read_reg_init(struct device_node *np,
+				   const char *propname, struct sm501_reg_init *val)
+{
+	u32 u32_val[2];
+
+	if (!of_property_read_u32_array(np, propname, u32_val, sizeof(u32_val))) {
+		val->set = u32_val[0];
+		val->mask = u32_val[1];
+	}
+}
+
+/* Read GPIO I2C configuration */
+static int sm501_parse_dt_gpio_i2c(struct device *dev, struct sm501_platdata *plat,
+				   struct device_node *np)
+{
+	struct sm501_platdata_gpio_i2c *gpio_i2c_p;
+	struct property *prop;
+	u32 gpio_i2c[5];
+	const __be32 *p;
+	unsigned int i;
+	u32 i2c_nr;
+
+	prop = of_find_property(np, "smi,gpio-i2c", NULL);
+	if (!prop)
+		return 0;
+
+	i2c_nr = of_property_count_u32_elems(np, "smi,gpio-i2c");
+
+	/* GPIO I2C define 5 words per channel. */
+	if (i2c_nr % 5)
+		return -EINVAL;
+	i2c_nr /= 5;
+	plat->gpio_i2c = devm_kzalloc(dev, sizeof(*plat->gpio_i2c) * i2c_nr,
+				      GFP_KERNEL);
+	if (!plat->gpio_i2c)
+		return -ENOMEM;
+
+	plat->gpio_i2c_nr = i2c_nr;
+	gpio_i2c_p = plat->gpio_i2c;
+
+	for (; i2c_nr > 0; i2c_nr--) {
+		for (i = 0; i < ARRAY_SIZE(gpio_i2c); i++) {
+			p = of_prop_next_u32(prop, p, &gpio_i2c[i]);
+			if (!p)
+				return -EINVAL;
+		}
+		gpio_i2c_p->bus_num = gpio_i2c[0];
+		gpio_i2c_p->pin_sda = gpio_i2c[1];
+		gpio_i2c_p->pin_scl = gpio_i2c[2];
+		gpio_i2c_p->udelay  = gpio_i2c[3];
+		gpio_i2c_p->timeout = gpio_i2c[4];
+		gpio_i2c_p++;
+	}
+	return 0;
+}
+
+/* Build platform_data from OF property */
+static int sm501_parse_dt(struct sm501_devdata *sm, struct device_node *np)
+{
+	struct sm501_platdata *plat;
+	u32 u32_val;
+	int ret;
+
+	plat = devm_kzalloc(sm->dev, sizeof(*plat), GFP_KERNEL);
+	if (!plat)
+		return -ENOMEM;
+
+	plat->init = devm_kzalloc(sm->dev, sizeof(*plat->init), GFP_KERNEL);
+	if (!plat->init)
+		return -ENOMEM;
+
+	if (!of_property_read_u32(np, "smi,devices", &u32_val))
+		plat->init->devices = u32_val;
+	if (!of_property_read_u32(np, "smi,mclk", &u32_val))
+		plat->init->mclk = u32_val;
+	if (!of_property_read_u32(np, "smi,m1xclk", &u32_val))
+		plat->init->m1xclk = u32_val;
+
+	sm501_of_read_reg_init(np, "smi,misc-timing", &plat->init->misc_timing);
+	sm501_of_read_reg_init(np, "smi,misc-control", &plat->init->misc_control);
+	sm501_of_read_reg_init(np, "smi,gpio-low", &plat->init->gpio_low);
+	sm501_of_read_reg_init(np, "smi,gpio-high", &plat->init->gpio_high);
+
+	if (IS_ENABLED(CONFIG_MFD_SM501_GPIO) &&
+	    (plat->init->devices & SM501_USE_GPIO)) {
+		ret = sm501_parse_dt_gpio_i2c(sm->dev, plat, np);
+		if (ret)
+			return ret;
+	}
+	sm->platdata = plat;
+	return 0;
+}
+
 static int sm501_plat_probe(struct platform_device *dev)
 {
 	struct sm501_devdata *sm;
@@ -1406,6 +1499,12 @@ static int sm501_plat_probe(struct platform_device *dev)
 		goto err_res;
 	}
 
+	if (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) {
+		ret = sm501_parse_dt(sm, dev->dev.of_node);
+		if (ret)
+			goto err_res;
+	}
+
 	platform_set_drvdata(dev, sm);
 
 	sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res));
diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
index d6fdc1737cd2..d35285819d28 100644
--- a/drivers/video/fbdev/sm501fb.c
+++ b/drivers/video/fbdev/sm501fb.c
@@ -1932,6 +1932,82 @@ static int sm501fb_start_one(struct sm501fb_info *info,
 	return 0;
 }
 
+#if defined(CONFIG_OF)
+/* parse CRT / panel configuration */
+static struct sm501_platdata_fbsub *dt_fbsub(struct device *dev,
+					     struct device_node *np,
+					     const char *name)
+{
+	struct sm501_platdata_fbsub *fbsub = NULL;
+	struct fb_videomode *def_mode = NULL;
+	struct device_node *child;
+	const void *p_edid;
+	u32 flags = 0;
+	u32 bpp = 0;
+	int len;
+
+	child = of_get_child_by_name(np, name);
+	if (child == NULL)
+		return NULL;
+
+	p_edid = of_get_property(child, "edid", &len);
+	if (p_edid && len == EDID_LENGTH) {
+		struct fb_monspecs *specs;
+		u8 *edid;
+
+		edid = kmemdup(p_edid, EDID_LENGTH, GFP_KERNEL);
+		if (edid) {
+			specs = kzalloc(sizeof(*specs), GFP_KERNEL);
+			if (specs) {
+				fb_edid_to_monspecs(edid, specs);
+				def_mode = specs->modedb;
+			}
+		}
+		kfree(edid);
+	}
+
+	of_property_read_u32(child, "bpp", &bpp);
+
+	/* If flags property is obtained, fbsub is returned. */
+	if (!of_property_read_u32(child, "smi,flags", &flags)) {
+		fbsub = devm_kzalloc(dev, sizeof(*fbsub), GFP_KERNEL);
+		if (fbsub) {
+			fbsub->def_mode = def_mode;
+			fbsub->def_bpp = bpp;
+			fbsub->flags = flags;
+		}
+	}
+	return fbsub;
+}
+
+/* Build platform_data from OF property */
+static struct sm501_platdata_fb *pdata_from_dt(struct device *dev, struct device_node *np)
+{
+	enum sm501_fb_routing fb_route = SM501_FB_OWN;
+	struct sm501_platdata_fb *pdata = NULL;
+	struct sm501_platdata_fbsub *fb_crt;
+	struct sm501_platdata_fbsub *fb_pnl;
+	unsigned int flags = 0;
+
+	if (of_property_read_bool(np, "route-crt-panel"))
+		fb_route = SM501_FB_CRT_PANEL;
+	if (of_property_read_bool(np, "swap-fb-endian"))
+		flags = SM501_FBPD_SWAP_FB_ENDIAN;
+	fb_crt = dt_fbsub(dev, np, "crt");
+	fb_pnl = dt_fbsub(dev, np, "panel");
+	if (fb_crt || fb_pnl) {
+		pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+		if (pdata) {
+			pdata->fb_route = fb_route;
+			pdata->flags = flags;
+			pdata->fb_crt = fb_crt;
+			pdata->fb_pnl = fb_pnl;
+		}
+	}
+	return pdata;
+}
+#endif
+
 static int sm501fb_probe(struct platform_device *pdev)
 {
 	struct sm501fb_info *info;
@@ -1974,6 +2050,12 @@ static int sm501fb_probe(struct platform_device *pdev)
 				if (info->edid_data)
 					found = 1;
 			}
+			/* Get platform data compatible configuration */
+			if (!found) {
+				info->pdata = pdata_from_dt(dev, np);
+				if (info->pdata)
+					found = 1;
+			}
 		}
 #endif
 		if (!found) {
-- 
2.39.2

Re: [DO NOT MERGE v5 23/37] mfd: sm501: Convert platform_data to OF property

[Lee Jones]

On Tue, 05 Dec 2023, Yoshinori Sato wrote:

> Various parameters of SM501 can be set using platform_data,
> so parameters cannot be passed in the DeviceTree target.
> Expands the parameters set in platform_data so that they can be
> specified using DeviceTree properties.
> 
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  drivers/mfd/sm501.c           | 99 +++++++++++++++++++++++++++++++++++
>  drivers/video/fbdev/sm501fb.c | 82 +++++++++++++++++++++++++++++
>  2 files changed, 181 insertions(+)
> 
> diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
> index 28027982cf69..f0104fdf0f34 100644
> --- a/drivers/mfd/sm501.c
> +++ b/drivers/mfd/sm501.c
> @@ -1370,6 +1370,99 @@ static int sm501_init_dev(struct sm501_devdata *sm)
>  	return 0;
>  }
>  
> +static void sm501_of_read_reg_init(struct device_node *np,
> +				   const char *propname, struct sm501_reg_init *val)
> +{
> +	u32 u32_val[2];

Encoding the size of the variable in the variable name is odd.

> +
> +	if (!of_property_read_u32_array(np, propname, u32_val, sizeof(u32_val))) {
> +		val->set = u32_val[0];
> +		val->mask = u32_val[1];

Masks and register values stored as DT properties?  This is generally
not permitted.  Please seek counsel from the DT maintainers.

> +	}
> +}
> +
> +/* Read GPIO I2C configuration */
> +static int sm501_parse_dt_gpio_i2c(struct device *dev, struct sm501_platdata *plat,
> +				   struct device_node *np)
> +{
> +	struct sm501_platdata_gpio_i2c *gpio_i2c_p;
> +	struct property *prop;
> +	u32 gpio_i2c[5];

Why 5?  Please define all magic numbers.

> +	const __be32 *p;
> +	unsigned int i;
> +	u32 i2c_nr;
> +
> +	prop = of_find_property(np, "smi,gpio-i2c", NULL);
> +	if (!prop)
> +		return 0;
> +
> +	i2c_nr = of_property_count_u32_elems(np, "smi,gpio-i2c");

Why do you need both of these probing functions?  What does
of_property_count_u32_elems() return if smi,gpio-i2c doesn't exist?

> +	/* GPIO I2C define 5 words per channel. */
> +	if (i2c_nr % 5)
> +		return -EINVAL;
> +	i2c_nr /= 5;

'\n'

> +	plat->gpio_i2c = devm_kzalloc(dev, sizeof(*plat->gpio_i2c) * i2c_nr,
> +				      GFP_KERNEL);
> +	if (!plat->gpio_i2c)
> +		return -ENOMEM;
> +
> +	plat->gpio_i2c_nr = i2c_nr;
> +	gpio_i2c_p = plat->gpio_i2c;

What's the purpose of this intermediary variable?

> +
> +	for (; i2c_nr > 0; i2c_nr--) {

You can define 'p' in here, right?

> +		for (i = 0; i < ARRAY_SIZE(gpio_i2c); i++) {
> +			p = of_prop_next_u32(prop, p, &gpio_i2c[i]);
> +			if (!p)
> +				return -EINVAL;
> +		}
> +		gpio_i2c_p->bus_num = gpio_i2c[0];
> +		gpio_i2c_p->pin_sda = gpio_i2c[1];
> +		gpio_i2c_p->pin_scl = gpio_i2c[2];
> +		gpio_i2c_p->udelay  = gpio_i2c[3];
> +		gpio_i2c_p->timeout = gpio_i2c[4];

I'm not even going to ask.  I'll leave this to the DT maintainers.

> +		gpio_i2c_p++;
> +	}
> +	return 0;
> +}
> +
> +/* Build platform_data from OF property */
> +static int sm501_parse_dt(struct sm501_devdata *sm, struct device_node *np)
> +{
> +	struct sm501_platdata *plat;
> +	u32 u32_val;
> +	int ret;
> +
> +	plat = devm_kzalloc(sm->dev, sizeof(*plat), GFP_KERNEL);
> +	if (!plat)
> +		return -ENOMEM;
> +
> +	plat->init = devm_kzalloc(sm->dev, sizeof(*plat->init), GFP_KERNEL);

Why not grab all of the memory at once?

Maybe make this 'init' thing a non-pointer.

> +	if (!plat->init)
> +		return -ENOMEM;
> +
> +	if (!of_property_read_u32(np, "smi,devices", &u32_val))
> +		plat->init->devices = u32_val;

What happens if you do:

	of_property_read_u32(np, "smi,devices", &plat->init->devices);

> +	if (!of_property_read_u32(np, "smi,mclk", &u32_val))
> +		plat->init->mclk = u32_val;
> +	if (!of_property_read_u32(np, "smi,m1xclk", &u32_val))
> +		plat->init->m1xclk = u32_val;
> +
> +	sm501_of_read_reg_init(np, "smi,misc-timing", &plat->init->misc_timing);
> +	sm501_of_read_reg_init(np, "smi,misc-control", &plat->init->misc_control);
> +	sm501_of_read_reg_init(np, "smi,gpio-low", &plat->init->gpio_low);
> +	sm501_of_read_reg_init(np, "smi,gpio-high", &plat->init->gpio_high);
> +
> +	if (IS_ENABLED(CONFIG_MFD_SM501_GPIO) &&
> +	    (plat->init->devices & SM501_USE_GPIO)) {

That's over-bracketed, right?

plat->init->devices is a bit mask of enable devices stored in DT?

Okay, I think this is going to need a lot of work on the DT side.

Leaving the review here for now.

> +		ret = sm501_parse_dt_gpio_i2c(sm->dev, plat, np);
> +		if (ret)
> +			return ret;
> +	}
> +	sm->platdata = plat;
> +	return 0;
> +}
> +
>  static int sm501_plat_probe(struct platform_device *dev)
>  {
>  	struct sm501_devdata *sm;
> @@ -1406,6 +1499,12 @@ static int sm501_plat_probe(struct platform_device *dev)
>  		goto err_res;
>  	}
>  
> +	if (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) {
> +		ret = sm501_parse_dt(sm, dev->dev.of_node);
> +		if (ret)
> +			goto err_res;
> +	}
> +
>  	platform_set_drvdata(dev, sm);
>  
>  	sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res));
> diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
> index d6fdc1737cd2..d35285819d28 100644
> --- a/drivers/video/fbdev/sm501fb.c
> +++ b/drivers/video/fbdev/sm501fb.c
> @@ -1932,6 +1932,82 @@ static int sm501fb_start_one(struct sm501fb_info *info,
>  	return 0;
>  }
>  
> +#if defined(CONFIG_OF)
> +/* parse CRT / panel configuration */
> +static struct sm501_platdata_fbsub *dt_fbsub(struct device *dev,
> +					     struct device_node *np,
> +					     const char *name)
> +{
> +	struct sm501_platdata_fbsub *fbsub = NULL;
> +	struct fb_videomode *def_mode = NULL;
> +	struct device_node *child;
> +	const void *p_edid;
> +	u32 flags = 0;
> +	u32 bpp = 0;
> +	int len;
> +
> +	child = of_get_child_by_name(np, name);
> +	if (child == NULL)
> +		return NULL;
> +
> +	p_edid = of_get_property(child, "edid", &len);
> +	if (p_edid && len == EDID_LENGTH) {
> +		struct fb_monspecs *specs;
> +		u8 *edid;
> +
> +		edid = kmemdup(p_edid, EDID_LENGTH, GFP_KERNEL);
> +		if (edid) {
> +			specs = kzalloc(sizeof(*specs), GFP_KERNEL);
> +			if (specs) {
> +				fb_edid_to_monspecs(edid, specs);
> +				def_mode = specs->modedb;
> +			}
> +		}
> +		kfree(edid);
> +	}
> +
> +	of_property_read_u32(child, "bpp", &bpp);
> +
> +	/* If flags property is obtained, fbsub is returned. */
> +	if (!of_property_read_u32(child, "smi,flags", &flags)) {
> +		fbsub = devm_kzalloc(dev, sizeof(*fbsub), GFP_KERNEL);
> +		if (fbsub) {
> +			fbsub->def_mode = def_mode;
> +			fbsub->def_bpp = bpp;
> +			fbsub->flags = flags;
> +		}
> +	}
> +	return fbsub;
> +}
> +
> +/* Build platform_data from OF property */
> +static struct sm501_platdata_fb *pdata_from_dt(struct device *dev, struct device_node *np)
> +{
> +	enum sm501_fb_routing fb_route = SM501_FB_OWN;
> +	struct sm501_platdata_fb *pdata = NULL;
> +	struct sm501_platdata_fbsub *fb_crt;
> +	struct sm501_platdata_fbsub *fb_pnl;
> +	unsigned int flags = 0;
> +
> +	if (of_property_read_bool(np, "route-crt-panel"))
> +		fb_route = SM501_FB_CRT_PANEL;
> +	if (of_property_read_bool(np, "swap-fb-endian"))
> +		flags = SM501_FBPD_SWAP_FB_ENDIAN;
> +	fb_crt = dt_fbsub(dev, np, "crt");
> +	fb_pnl = dt_fbsub(dev, np, "panel");
> +	if (fb_crt || fb_pnl) {
> +		pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
> +		if (pdata) {
> +			pdata->fb_route = fb_route;
> +			pdata->flags = flags;
> +			pdata->fb_crt = fb_crt;
> +			pdata->fb_pnl = fb_pnl;
> +		}
> +	}
> +	return pdata;
> +}
> +#endif
> +
>  static int sm501fb_probe(struct platform_device *pdev)
>  {
>  	struct sm501fb_info *info;
> @@ -1974,6 +2050,12 @@ static int sm501fb_probe(struct platform_device *pdev)
>  				if (info->edid_data)
>  					found = 1;
>  			}
> +			/* Get platform data compatible configuration */
> +			if (!found) {
> +				info->pdata = pdata_from_dt(dev, np);
> +				if (info->pdata)
> +					found = 1;
> +			}
>  		}
>  #endif
>  		if (!found) {
> -- 
> 2.39.2
> 

-- 
Lee Jones [李琼斯]

[DO NOT MERGE v5 24/37] dt-binding: sh: cpus: Add SH CPUs json-schema

[Yoshinori Sato]

Renesas SH series and compatible ISA CPUs.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../devicetree/bindings/sh/cpus.yaml          | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sh/cpus.yaml

diff --git a/Documentation/devicetree/bindings/sh/cpus.yaml b/Documentation/devicetree/bindings/sh/cpus.yaml
new file mode 100644
index 000000000000..eb57e76e2aa2
--- /dev/null
+++ b/Documentation/devicetree/bindings/sh/cpus.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sh/cpus.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SuperH CPUs
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+description: |+
+  The device tree allows to describe the layout of CPUs in a system through
+  the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
+  defining properties for every cpu.
+
+  Bindings for CPU nodes follow the Devicetree Specification, available from:
+
+  https://www.devicetree.org/specifications/
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,sh2a
+          - renesas,sh3
+          - renesas,sh4
+          - renesas,sh4a
+          - jcore,j2
+      - const: renesas,sh2
+
+  clock-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      CPU core clock freqency.
+
+  clocks: true
+
+  clock-names: true
+
+  reg:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    const: 0
+
+  device_type: true
+
+required:
+  - compatible
+  - reg
+  - device_type
+
+additionalProperties: true
+
+examples:
+  - |
+    #include <dt-bindings/clock/sh7750.h>
+    cpus {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        cpu: cpu@0 {
+            compatible = "renesas,sh4", "renesas,sh2";
+            device_type = "cpu";
+            reg = <0>;
+            clocks = <&cpg SH7750_CPG_ICK>;
+            clock-names = "ick";
+            icache-size = <16384>;
+            icache-line-size = <32>;
+            dcache-size = <32768>;
+            dcache-line-size = <32>;
+        };
+    };
+...
-- 
2.39.2

Re: [DO NOT MERGE v5 24/37] dt-binding: sh: cpus: Add SH CPUs json-schema

[Geert Uytterhoeven]

Hi Sato-san,

On Tue, Dec 5, 2023 at 10:46 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> Renesas SH series and compatible ISA CPUs.
>
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

Thanks for your patch!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sh/cpus.yaml
> @@ -0,0 +1,73 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sh/cpus.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas SuperH CPUs
> +
> +maintainers:
> +  - Yoshinori Sato <ysato@users.sourceforge.jp>
> +
> +description: |+
> +  The device tree allows to describe the layout of CPUs in a system through
> +  the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
> +  defining properties for every cpu.
> +
> +  Bindings for CPU nodes follow the Devicetree Specification, available from:
> +
> +  https://www.devicetree.org/specifications/
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - renesas,sh2a
> +          - renesas,sh3
> +          - renesas,sh4
> +          - renesas,sh4a
> +          - jcore,j2
> +      - const: renesas,sh2

Plain "renesas,sh2" should be accepted, too.

> +
> +  clock-frequency:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      CPU core clock freqency.

frequency

Although clocks below is more flexible.

> +
> +  clocks: true

maxItems: 1

> +
> +  clock-names: true
> +
> +  reg:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    const: 0

Some SH systems are SMP, so non-zero values should be accepted.

> +
> +  device_type: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - device_type
> +
> +additionalProperties: true
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/sh7750.h>

fatal error: dt-bindings/clock/sh7750.h: No such file or directory

sh7750-cpg.h


> +    cpus {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        cpu: cpu@0 {
> +            compatible = "renesas,sh4", "renesas,sh2";
> +            device_type = "cpu";
> +            reg = <0>;
> +            clocks = <&cpg SH7750_CPG_ICK>;
> +            clock-names = "ick";
> +            icache-size = <16384>;
> +            icache-line-size = <32>;
> +            dcache-size = <32768>;
> +            dcache-line-size = <32>;
> +        };
> +    };
> +...

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[DO NOT MERGE v5 25/37] dt-bindings: vendor-prefixes: Add iodata

[Yoshinori Sato]

Add IO DATA DEVICE INC.
https://www.iodata.com/

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 309b94c328c8..94ed63d9f7de 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -671,6 +671,8 @@ patternProperties:
     description: Inventec
   "^inversepath,.*":
     description: Inverse Path
+  "^iodata,.*":
+    description: IO DATA DEVICE Inc.
   "^iom,.*":
     description: Iomega Corporation
   "^irondevice,.*":
-- 
2.39.2

[DO NOT MERGE v5 26/37] dt-bindings: vendor-prefixes: Add smi

[Yoshinori Sato]

Add Silicon Mortion Technology Corporation
https://www.siliconmotion.com/

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 94ed63d9f7de..a338bdd743ab 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1283,6 +1283,8 @@ patternProperties:
     description: Skyworks Solutions, Inc.
   "^smartlabs,.*":
     description: SmartLabs LLC
+  "^smi,.*":
+    description: Silicon Motion Technology Corporation
   "^smsc,.*":
     description: Standard Microsystems Corporation
   "^snps,.*":
-- 
2.39.2

[DO NOT MERGE v5 27/37] dt-bindings: ata: ata-generic: Add new targets

[Yoshinori Sato]

Added new ata-generic target.
- iodata,usl-5p-ata
- renesas,rts7751r2d-ata

Each boards have simple IDE Interface. Use ATA generic driver.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 Documentation/devicetree/bindings/ata/ata-generic.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/ata/ata-generic.yaml b/Documentation/devicetree/bindings/ata/ata-generic.yaml
index 0697927f3d7e..1025b3b351d0 100644
--- a/Documentation/devicetree/bindings/ata/ata-generic.yaml
+++ b/Documentation/devicetree/bindings/ata/ata-generic.yaml
@@ -18,6 +18,8 @@ properties:
       - enum:
           - arm,vexpress-cf
           - fsl,mpc8349emitx-pata
+          - iodata,usl-5p-ata
+          - renesas,rts7751r2d-ata
       - const: ata-generic
 
   reg:
-- 
2.39.2

[DO NOT MERGE v5 28/37] dt-bindings: soc: renesas: sh: Add SH7751 based target

[Yoshinori Sato]

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../devicetree/bindings/soc/renesas/sh.yaml   | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/renesas/sh.yaml

diff --git a/Documentation/devicetree/bindings/soc/renesas/sh.yaml b/Documentation/devicetree/bindings/soc/renesas/sh.yaml
new file mode 100644
index 000000000000..3fbff2532ad3
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/renesas/sh.yaml
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/renesas/sh.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas SuperH Platform
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: RTS7751R2D Plus
+        items:
+          - enum:
+              - renesas,rts7751r2d # Renesas SH4 2D graphics board
+          - const: renesas,sh7751r
+
+      - description: Julian board
+        items:
+          - enum:
+              - iodata,landisk  # LANDISK HDL-U
+              - iodata,usl-5p   # USL-5P
+          - const: renesas,sh7751r
+
+additionalProperties: true
+
+...
-- 
2.39.2

[DO NOT MERGE v5 29/37] sh: SH7751R SoC Internal peripheral definition dtsi.

[Yoshinori Sato]

SH7751R internal peripherals device tree.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/dts/sh7751r.dtsi | 150 ++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 arch/sh/boot/dts/sh7751r.dtsi

diff --git a/arch/sh/boot/dts/sh7751r.dtsi b/arch/sh/boot/dts/sh7751r.dtsi
new file mode 100644
index 000000000000..0db5a7005a2d
--- /dev/null
+++ b/arch/sh/boot/dts/sh7751r.dtsi
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the SH7751R SoC
+ */
+
+#include <dt-bindings/interrupt-controller/sh7751-intc.h>
+#include <dt-bindings/clock/sh7750-cpg.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			compatible = "renesas,sh4", "renesas,sh2";
+			device_type = "cpu";
+			reg = <0>;
+			clocks = <&cpg SH7750_CPG_ICK>;
+			clock-names = "ick";
+			icache-size = <16384>;
+			icache-line-size = <32>;
+			dcache-size = <32768>;
+			dcache-line-size = <32>;
+		};
+	};
+
+	xtal: oscillator {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <0>;
+		clock-output-names = "xtal";
+	};
+
+	soc {
+		compatible = "simple-bus";
+		interrupt-parent = <&shintc>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		cpg: clock-controller@ffc00000 {
+			#clock-cells = <1>;
+			#power-domain-cells = <0>;
+			compatible = "renesas,sh7751r-cpg";
+			clocks = <&xtal>;
+			clock-names = "xtal";
+			reg = <0xffc00000 20>, <0xfe0a0000 16>;
+			reg-names = "FRQCR", "CLKSTP00";
+			renesas,mode = <0>;
+		};
+
+		shintc: interrupt-controller@ffd00000 {
+			compatible = "renesas,sh7751-intc";
+			#interrupt-cells = <1>;
+			interrupt-controller;
+			reg = <0xffd00000 20>, <0xfe080000 128>;
+			reg-names = "ICR", "INTPRI00";
+			renesas,ipr-map = <0x240 IPRD IPR_B12>,	/* IRL0 */
+					  <0x2a0 IPRD IPR_B8>,	/* IRL1 */
+					  <0x300 IPRD IPR_B4>,	/* IRL2 */
+					  <0x360 IPRD IPR_B0>,	/* IRL3 */
+					  <0x400 IPRA IPR_B12>,	/* TMU0 */
+					  <0x420 IPRA IPR_B8>,	/* TMU1 */
+					  <0x440 IPRA IPR_B4>,	/* TMU2 TNUI */
+					  <0x460 IPRA IPR_B4>,	/* TMU2 TICPI */
+					  <0x480 IPRA IPR_B0>,	/* RTC ATI */
+					  <0x4a0 IPRA IPR_B0>,	/* RTC PRI */
+					  <0x4c0 IPRA IPR_B0>,	/* RTC CUI */
+					  <0x4e0 IPRB IPR_B4>,	/* SCI ERI */
+					  <0x500 IPRB IPR_B4>,	/* SCI RXI */
+					  <0x520 IPRB IPR_B4>,	/* SCI TXI */
+					  <0x540 IPRB IPR_B4>,	/* SCI TEI */
+					  <0x560 IPRB IPR_B12>,	/* WDT */
+					  <0x580 IPRB IPR_B8>,	/* REF RCMI */
+					  <0x5a0 IPRB IPR_B4>,	/* REF ROVI */
+					  <0x600 IPRC IPR_B0>,	/* H-UDI */
+					  <0x620 IPRC IPR_B12>,	/* GPIO */
+					  <0x640 IPRC IPR_B8>,	/* DMAC DMTE0 */
+					  <0x660 IPRC IPR_B8>,	/* DMAC DMTE1 */
+					  <0x680 IPRC IPR_B8>,	/* DMAC DMTE2 */
+					  <0x6a0 IPRC IPR_B8>,	/* DMAC DMTE3 */
+					  <0x6c0 IPRC IPR_B8>,	/* DMAC DMAE */
+					  <0x700 IPRC IPR_B4>,	/* SCIF ERI */
+					  <0x720 IPRC IPR_B4>,	/* SCIF RXI */
+					  <0x740 IPRC IPR_B4>,	/* SCIF BRI */
+					  <0x760 IPRC IPR_B4>,	/* SCIF TXI */
+					  <0x780 IPRC IPR_B8>,	/* DMAC DMTE4 */
+					  <0x7a0 IPRC IPR_B8>,	/* DMAC DMTE5 */
+					  <0x7c0 IPRC IPR_B8>,	/* DMAC DMTE6 */
+					  <0x7e0 IPRC IPR_B8>,	/* DMAC DMTE7 */
+					  <0xa00 INTPRI00 IPR_B0>,	/* PCIC PCISERR */
+					  <0xa20 INTPRI00 IPR_B4>,	/* PCIC PCIDMA3 */
+					  <0xa40 INTPRI00 IPR_B4>,	/* PCIC PCIDMA2 */
+					  <0xa60 INTPRI00 IPR_B4>,	/* PCIC PCIDMA1 */
+					  <0xa80 INTPRI00 IPR_B4>,	/* PCIC PCIDMA0 */
+					  <0xaa0 INTPRI00 IPR_B4>,	/* PCIC PCIPWON */
+					  <0xac0 INTPRI00 IPR_B4>,	/* PCIC PCIPWDWN */
+					  <0xae0 INTPRI00 IPR_B4>,	/* PCIC PCIERR */
+					  <0xb00 INTPRI00 IPR_B8>,	/* TMU3 */
+					  <0xb80 INTPRI00 IPR_B12>;	/* TMU4 */
+		};
+
+		/* sci0 is rarely used, so it is not defined here. */
+		scif1: serial@ffe80000 {
+			compatible = "renesas,scif-sh7751", "renesas,scif";
+			reg = <0xffe80000 0x100>;
+			interrupts = <evt2irq(0x700)>,
+				     <evt2irq(0x720)>,
+				     <evt2irq(0x760)>,
+				     <evt2irq(0x740)>;
+			interrupt-names = "eri", "rxi", "txi", "bri";
+			clocks = <&cpg SH7750_MSTP_SCIF>;
+			clock-names = "fck";
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		/* Normally ch0 and ch1 are used, so we will define ch0 to ch2 here. */
+		tmu0: timer@ffd80000 {
+			compatible = "renesas,tmu-sh7750", "renesas,tmu";
+			reg = <0xffd80000 12>;
+			interrupts = <evt2irq(0x400)>,
+				     <evt2irq(0x420)>,
+				     <evt2irq(0x440)>,
+				     <evt2irq(0x460)>;
+			interrupt-names = "tuni0", "tuni1", "tuni2", "ticpi2";
+			clocks = <&cpg SH7750_MSTP_TMU012>;
+			clock-names = "fck";
+			power-domains = <&cpg>;
+			#renesas,channels = <3>;
+		};
+
+		pcic: pci@fe200000 {
+			compatible = "renesas,sh7751-pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			device_type = "pci";
+			bus-range = <0 0>;
+			ranges = <0x02000000 0 0xfd000000 0xfd000000 0 0x01000000>,
+				 <0x01000000 0 0x00000000 0xfe240000 0 0x00040000>;
+			reg = <0xfe200000 0x0400>,
+			      <0xff800000 0x0100>;
+			status = "disabled";
+		};
+	};
+};
-- 
2.39.2

[DO NOT MERGE v5 30/37] sh: add RTS7751R2D Plus DTS

[Yoshinori Sato]

Renesas RTS7751R2D Plus devicetree.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/dts/rts7751r2dplus.dts | 157 ++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 arch/sh/boot/dts/rts7751r2dplus.dts

diff --git a/arch/sh/boot/dts/rts7751r2dplus.dts b/arch/sh/boot/dts/rts7751r2dplus.dts
new file mode 100644
index 000000000000..4fb75e814615
--- /dev/null
+++ b/arch/sh/boot/dts/rts7751r2dplus.dts
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the Renesas RTS7751R2D Plus
+ */
+
+/dts-v1/;
+
+#include "sh7751r.dtsi"
+#include <dt-bindings/display/sm501.h>
+
+/ {
+	model = "Renesas RTS7715R2D Plus";
+	compatible = "renesas,rts7751r2d", "renesas,sh7751r";
+
+	aliases {
+		serial0 = &scif1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@c000000 {
+		device_type = "memory";
+		reg = <0x0c000000 0x4000000>;
+	};
+
+	r2dintc: interrupt_controller@a4000000 {
+		compatible = "renesas,sh7751-irl-ext";
+		reg = <0xa4000000 0x02>;
+		interrupt-controller;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <1>;
+		renesas,width = <16>;
+		renesas,enable-bit = <0 11>,		/* PCI INTD */
+				     <1 9>,		/* CF IDE */
+				     <2 8>,		/* CF CD */
+				     <3 12>,		/* PCI INTC */
+				     <4 10>,		/* SM501 */
+				     <5 6>,		/* KEY */
+				     <6 5>,		/* RTC ALARM */
+				     <7 4>,		/* RTC T */
+				     <8 7>,		/* SDCARD */
+				     <9 14>,		/* PCI INTA */
+				     <10 13>,		/* PCI INTB */
+				     <11 0>,		/* EXT */
+				     <12 15>;		/* TP */
+	};
+
+	display@0 {
+		compatible = "smi,sm501";
+		reg = <0x10000000 0x03e00000
+		       0x13e00000 0x00200000>;
+		interrupt-parent = <&r2dintc>;
+		interrupts = <4>;
+		mode = "640x480-16@60";
+		little-endian;
+		smi,devices = <(SM501_USE_USB_HOST | SM501_USE_UART0)>;
+		interrupt-name = "sm501";
+		swap-fb-endian;
+
+		crt {
+			smi,flags = <(SM501FB_FLAG_USE_INIT_MODE |
+				      SM501FB_FLAG_DISABLE_AT_EXIT |
+				      SM501FB_FLAG_USE_HWCURSOR |
+				      SM501FB_FLAG_USE_HWACCEL)>;
+		};
+
+		panel {
+			bpp = <16>;
+			edid = [00 ff ff ff ff ff ff 00 00 00 00 00 00 00 00 00
+				00 00 01 04 00 00 00 00 00 00 00 00 00 00 00 00
+				00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+				00 00 00 00 00 00 f0 0a 80 fb 20 e0 25 10 32 60
+				02 00 00 00 00 00 00 06 00 00 00 00 00 00 00 00
+				00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+				00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+				00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 bd];
+			smi,flags = <(SM501FB_FLAG_USE_INIT_MODE |
+				      SM501FB_FLAG_DISABLE_AT_EXIT |
+				      SM501FB_FLAG_USE_HWCURSOR |
+				      SM501FB_FLAG_USE_HWACCEL)>;
+		};
+	};
+
+	compact-flash@b4001000 {
+		compatible = "renesas,rts7751r2d-ata", "ata-generic";
+		reg = <0xb4001000 0x0e>, <0xb400080c 2>;
+		reg-shift = <1>;
+		interrupt-parent = <&r2dintc>;
+		interrupts = <1>;
+	};
+
+	flash@0 {
+		compatible = "cfi-flash";
+		reg = <0x00000000 0x02000000>;
+		device-width = <2>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "U-Boot";
+			reg = <0x00000000 0x00040000>;
+		};
+
+		partition@1 {
+			label = "Environemt";
+			reg = <0x00040000 0x00040000>;
+		};
+
+		partition@2 {
+			label = "Kernel";
+			reg = <0x00080000 0x001c0000>;
+		};
+
+		partition@3 {
+			label = "Flash_FS";
+			reg = <0x00240000 0x00dc0000>;
+		};
+	};
+};
+
+&xtal {
+	clock-frequency = <22222222>;
+};
+
+&cpg {
+	renesas,mode = <5>;
+};
+
+&scif1 {
+	status = "okay";
+};
+
+&pcic {
+	renesas,bcr1 = <0x40080000>;
+	renesas,intm = <0x0000c3ff>;
+	renesas,aintm = <0x0000380f>;
+	renesas,config = <1 0xfb900047>, <4 0xab000001>;
+	renesas,mcrmask = <0x40000004>;
+
+	interrupt-map = <0x0000 0 0 1 &r2dintc 9>,
+			<0x0000 0 0 2 &r2dintc 10>,
+			<0x0000 0 0 3 &r2dintc 3>,
+			<0x0000 0 0 4 &r2dintc 0>,
+			<0x0800 0 0 1 &r2dintc 10>,
+			<0x0800 0 0 2 &r2dintc 3>,
+			<0x0800 0 0 3 &r2dintc 0>,
+			<0x0800 0 0 4 &r2dintc 9>,
+			<0x1000 0 0 1 &r2dintc 3>,
+			<0x1000 0 0 2 &r2dintc 0>,
+			<0x1000 0 0 3 &r2dintc 9>,
+			<0x1000 0 0 4 &r2dintc 10>;
+			interrupt-map-mask = <0x1800 0 0 7>;
+	status = "okay";
+};
-- 
2.39.2

[DO NOT MERGE v5 31/37] sh: Add IO DATA LANDISK dts

[Yoshinori Sato]

IO DATA DEVICE Inc. LANDISK HDL-U devicetree.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/dts/landisk.dts | 74 ++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 arch/sh/boot/dts/landisk.dts

diff --git a/arch/sh/boot/dts/landisk.dts b/arch/sh/boot/dts/landisk.dts
new file mode 100644
index 000000000000..62e8e48c35ef
--- /dev/null
+++ b/arch/sh/boot/dts/landisk.dts
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the IO DATA DEVICE LANDISK
+ */
+
+/dts-v1/;
+
+#include "sh7751r.dtsi"
+
+/ {
+	model = "IO DATA Device LANDISK";
+	compatible = "iodata,landisk", "renesas,sh7751r";
+
+	aliases {
+		serial0 = &scif1;
+	};
+
+	chosen {
+		stdout-path = "serial0:9600n8";
+	};
+
+	memory@c000000 {
+		device_type = "memory";
+		reg = <0x0c000000 0x4000000>;
+	};
+
+	julianintc: interrupt-controller@b0000005 {
+		compatible = "renesas,sh7751-irl-ext";
+		reg = <0xb0000005 0x01>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		renesas,width = <8>;
+		renesas,enable-bit = <5 0>,	/* PCI INTA */
+				     <6 1>,	/* PCI INTB */
+				     <7 2>,	/* PCI INTC */
+				     <8 3>,	/* PCI INTD */
+				     <9 4>,	/* ATA */
+				     <10 5>,	/* CF */
+				     <11 6>,	/* Power Switch */
+				     <12 7>;	/* Button */
+	};
+};
+
+&xtal {
+	clock-frequency = <22222222>;
+};
+
+&cpg {
+	renesas,mode = <5>;
+};
+
+&scif1 {
+	status = "okay";
+};
+
+&pcic {
+	renesas,bcr1 = <0x00080000>;
+	renesas,config = <6 0xd0000000>;
+	renesas,mcrmask = <0x40000004>;
+	interrupt-map = <0x0000 0 0 1 &julianintc 5>,
+			<0x0000 0 0 2 &julianintc 6>,
+			<0x0000 0 0 3 &julianintc 7>,
+			<0x0000 0 0 4 &julianintc 8>,
+			<0x0800 0 0 1 &julianintc 6>,
+			<0x0800 0 0 2 &julianintc 7>,
+			<0x0800 0 0 3 &julianintc 8>,
+			<0x0800 0 0 4 &julianintc 5>,
+			<0x1000 0 0 1 &julianintc 7>,
+			<0x1000 0 0 2 &julianintc 8>,
+			<0x1000 0 0 3 &julianintc 5>,
+			<0x1000 0 0 4 &julianintc 6>;
+	interrupt-map-mask = <0x1800 0 0 7>;
+	status = "okay";
+};
-- 
2.39.2

[DO NOT MERGE v5 32/37] sh: Add IO DATA USL-5P dts

[Yoshinori Sato]

IO DATA DEVICE Inc. USL-5P devicetree.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/dts/usl-5p.dts | 84 +++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 arch/sh/boot/dts/usl-5p.dts

diff --git a/arch/sh/boot/dts/usl-5p.dts b/arch/sh/boot/dts/usl-5p.dts
new file mode 100644
index 000000000000..ec666c75db12
--- /dev/null
+++ b/arch/sh/boot/dts/usl-5p.dts
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the IO DATA DEVICE USL-5P
+ */
+
+/dts-v1/;
+
+#include "sh7751r.dtsi"
+
+/ {
+	model = "IO-DATA Device USL-5P";
+	compatible = "iodata,usl-5p", "renesas,sh7751r";
+
+	aliases {
+		serial0 = &scif1;
+	};
+
+	chosen {
+		stdout-path = "serial0:9600n8";
+	};
+
+	memory@c000000 {
+		device_type = "memory";
+		reg = <0x0c000000 0x4000000>;
+	};
+
+	julianintc: interrupt-controller@b0000005 {
+		compatible = "renesas,sh7751-irl-ext";
+		reg = <0xb0000005 0x01>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		renesas,width = <8>;
+		renesas,enable-bit = <5 0>,	/* PCI INTA */
+				     <6 1>,	/* PCI INTB */
+				     <7 2>,	/* PCI INTC */
+				     <8 3>,	/* PCI INTD */
+				     <9 4>,	/* ATA */
+				     <10 5>,	/* CF */
+				     <11 6>,	/* Power Switch */
+				     <12 7>;	/* Button */
+	};
+
+	compact-flash@b4000040 {
+		compatible = "iodata,usl-5p-ata", "ata-generic";
+		reg = <0xb4000040 0x0e>, <0xb400002c 2>;
+		reg-shift = <1>;
+		interrupt-parent = <&julianintc>;
+		interrupts = <10>;
+	};
+};
+
+&xtal {
+	clock-frequency = <22222222>;
+};
+
+&cpg {
+	renesas,mode = <5>;
+};
+
+&scif1 {
+	status = "okay";
+};
+
+&pcic {
+	renesas,bcr1 = <0x00080000>;
+	renesas,config = <6 0xd0000000>;
+	renesas,mcrmask = <0x40000004>;
+	interrupt-map = <0x0000 0 0 1 &julianintc 5>,
+			<0x0000 0 0 2 &julianintc 6>,
+			<0x0000 0 0 3 &julianintc 7>,
+			<0x0000 0 0 4 &julianintc 8>,
+			<0x0800 0 0 1 &julianintc 6>,
+			<0x0800 0 0 2 &julianintc 7>,
+			<0x0800 0 0 3 &julianintc 8>,
+			<0x0800 0 0 4 &julianintc 5>,
+			<0x1000 0 0 1 &julianintc 7>,
+			<0x1000 0 0 2 &julianintc 8>,
+			<0x1000 0 0 3 &julianintc 5>,
+			<0x1000 0 0 4 &julianintc 6>;
+	interrupt-map-mask = <0x1800 0 0 7>;
+	status = "okay";
+};
-- 
2.39.2

[DO NOT MERGE v5 33/37] sh: j2_mimas_v2.dts update

[Yoshinori Sato]

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/dts/j2_mimas_v2.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/boot/dts/j2_mimas_v2.dts b/arch/sh/boot/dts/j2_mimas_v2.dts
index fa9562f78d53..5dfe20866a1c 100644
--- a/arch/sh/boot/dts/j2_mimas_v2.dts
+++ b/arch/sh/boot/dts/j2_mimas_v2.dts
@@ -16,7 +16,7 @@ cpus {
 
 		cpu@0 {
 			device_type = "cpu";
-			compatible = "jcore,j2";
+			compatible = "jcore,j2", "renesas,sh2";
 			reg = <0>;
 			clock-frequency = <50000000>;
 			d-cache-size = <8192>;
-- 
2.39.2

[DO NOT MERGE v5 34/37] sh: Add dtbs target support.

[Yoshinori Sato]

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/boot/dts/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/sh/boot/dts/Makefile b/arch/sh/boot/dts/Makefile
index 4a6dec9714a9..e6b93360c213 100644
--- a/arch/sh/boot/dts/Makefile
+++ b/arch/sh/boot/dts/Makefile
@@ -1,2 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_USE_BUILTIN_DTB) += $(addsuffix .dtb.o, $(CONFIG_BUILTIN_DTB_SOURCE))
+
+dtb-$(CONFIG_CPU_J2) += j2_mimas_v2.dtb
+dtb-$(CONFIG_CPU_SUBTYPE_SH7751R) += landisk.dtb
+dtb-$(CONFIG_CPU_SUBTYPE_SH7751R) += rts7751r2dplus.dtb
+dtb-$(CONFIG_CPU_SUBTYPE_SH7751R) += usl-5p.dtb
-- 
2.39.2

[DO NOT MERGE v5 35/37] sh: RTS7751R2D Plus OF defconfig

[Yoshinori Sato]

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/configs/rts7751r2dplus-of_defconfig | 93 +++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 arch/sh/configs/rts7751r2dplus-of_defconfig

diff --git a/arch/sh/configs/rts7751r2dplus-of_defconfig b/arch/sh/configs/rts7751r2dplus-of_defconfig
new file mode 100644
index 000000000000..82019a233b6e
--- /dev/null
+++ b/arch/sh/configs/rts7751r2dplus-of_defconfig
@@ -0,0 +1,93 @@
+CONFIG_SYSVIPC=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_NAMESPACES=y
+CONFIG_EXPERT=y
+CONFIG_PROFILING=y
+CONFIG_CPU_SUBTYPE_SH7751R=y
+CONFIG_MEMORY_START=0x0c000000
+CONFIG_SH_OF_BOARD=y
+CONFIG_HEARTBEAT=y
+CONFIG_ZERO_PAGE_OFFSET=0x00010000
+CONFIG_MODULES=y
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_IPV6 is not set
+CONFIG_PCI=y
+CONFIG_HOTPLUG_PCI=y
+CONFIG_PCI_SH7751=y
+CONFIG_UEVENT_HELPER=y
+CONFIG_MTD=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_CFI=y
+CONFIG_MTD_CFI_AMDSTD=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_SD=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_ATA=y
+CONFIG_PATA_OF_PLATFORM=y
+CONFIG_NETDEVICES=y
+CONFIG_8139CP=y
+CONFIG_8139TOO=y
+# CONFIG_8139TOO_PIO is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_SH_SCI=y
+CONFIG_SERIAL_SH_SCI_EARLYCON=y
+CONFIG_HW_RANDOM=y
+CONFIG_SPI=y
+CONFIG_SPI_SH_SCI=y
+CONFIG_MFD_SM501=y
+CONFIG_FB=y
+CONFIG_FB_SH_MOBILE_LCDC=m
+CONFIG_FB_SM501=y
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_LOGO=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+# CONFIG_LOGO_LINUX_CLUT224 is not set
+# CONFIG_LOGO_SUPERH_MONO is not set
+# CONFIG_LOGO_SUPERH_VGA16 is not set
+CONFIG_SOUND=y
+CONFIG_SND=m
+CONFIG_SND_YMFPCI=m
+CONFIG_HID_A4TECH=y
+CONFIG_HID_BELKIN=y
+CONFIG_HID_CHERRY=y
+CONFIG_HID_CHICONY=y
+CONFIG_HID_CYPRESS=y
+CONFIG_HID_EZKEY=y
+CONFIG_HID_GYRATION=y
+CONFIG_HID_ITE=y
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_REDRAGON=y
+CONFIG_HID_MICROSOFT=y
+CONFIG_HID_MONTEREY=y
+CONFIG_HID_PANTHERLORD=y
+CONFIG_HID_PETALYNX=y
+CONFIG_HID_SAMSUNG=y
+CONFIG_HID_SUNPLUS=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_STORAGE=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_R9701=y
+CONFIG_RENESAS_SH7751_INTC=y
+CONFIG_RENESAS_SH7751IRL_INTC=y
+CONFIG_EXT2_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_TMPFS=y
+CONFIG_MINIX_FS=y
+CONFIG_NLS_CODEPAGE_932=y
+CONFIG_CRC_T10DIF=y
+CONFIG_DEBUG_FS=y
+# CONFIG_FTRACE is not set
-- 
2.39.2

Re: [DO NOT MERGE v5 35/37] sh: RTS7751R2D Plus OF defconfig

[Arnd Bergmann]

On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> ---
>  arch/sh/configs/rts7751r2dplus-of_defconfig | 93 +++++++++++++++++++++

This is very similar to the landisk config, so it may be
easier to just have one of them that works for both, as well
as future ones.

> +CONFIG_LOG_BUF_SHIFT=14
> +CONFIG_NAMESPACES=y
> +CONFIG_EXPERT=y

You should not normally need to enable CONFIG_EXPERT in a
defconfig. Is there any particular reason for this?

    Arnd

[DO NOT MERGE v5 36/37] sh: LANDISK OF defconfig

[Yoshinori Sato]

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/configs/landisk-of_defconfig | 111 +++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 arch/sh/configs/landisk-of_defconfig

diff --git a/arch/sh/configs/landisk-of_defconfig b/arch/sh/configs/landisk-of_defconfig
new file mode 100644
index 000000000000..406de7d7b8a2
--- /dev/null
+++ b/arch/sh/configs/landisk-of_defconfig
@@ -0,0 +1,111 @@
+CONFIG_SYSVIPC=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_NAMESPACES=y
+CONFIG_EXPERT=y
+CONFIG_KEXEC=y
+CONFIG_CPU_SUBTYPE_SH7751R=y
+CONFIG_MEMORY_START=0x0c000000
+CONFIG_SH_OF_BOARD=y
+CONFIG_HEARTBEAT=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_PNP=y
+# CONFIG_IPV6 is not set
+CONFIG_NETFILTER=y
+CONFIG_ATALK=m
+CONFIG_PCI=y
+CONFIG_PCI_SH7751=y
+CONFIG_PCCARD=y
+CONFIG_YENTA=y
+CONFIG_UEVENT_HELPER=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_DEV_SR=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_ATA=y
+CONFIG_PATA_ARTOP=y
+CONFIG_PATA_OF_PLATFORM=y
+CONFIG_ATA_GENERIC=y
+CONFIG_MD=y
+CONFIG_BLK_DEV_MD=m
+CONFIG_MD_LINEAR=m
+CONFIG_MD_RAID0=m
+CONFIG_MD_RAID1=m
+CONFIG_NETDEVICES=y
+CONFIG_TUN=m
+CONFIG_8139CP=y
+CONFIG_USB_PEGASUS=m
+CONFIG_USB_RTL8150=m
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+CONFIG_SERIAL_SH_SCI=y
+CONFIG_SERIAL_SH_SCI_EARLYCON=y
+CONFIG_HW_RANDOM=y
+CONFIG_SOUND=m
+CONFIG_HID_A4TECH=m
+CONFIG_HID_BELKIN=m
+CONFIG_HID_CHERRY=m
+CONFIG_HID_CHICONY=m
+CONFIG_HID_CYPRESS=m
+CONFIG_HID_EZKEY=m
+CONFIG_HID_GYRATION=m
+CONFIG_HID_ITE=y
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_REDRAGON=y
+CONFIG_HID_MICROSOFT=m
+CONFIG_HID_MONTEREY=m
+CONFIG_HID_PANTHERLORD=m
+CONFIG_HID_PETALYNX=m
+CONFIG_HID_SAMSUNG=m
+CONFIG_HID_SUNPLUS=m
+CONFIG_USB_HID=m
+CONFIG_USB=y
+CONFIG_USB_MON=y
+CONFIG_USB_EHCI_HCD=y
+# CONFIG_USB_EHCI_TT_NEWSCHED is not set
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_PRINTER=m
+CONFIG_USB_STORAGE=m
+CONFIG_USB_STORAGE_DATAFAB=m
+CONFIG_USB_STORAGE_FREECOM=m
+CONFIG_USB_STORAGE_ISD200=m
+CONFIG_USB_STORAGE_SDDR09=m
+CONFIG_USB_STORAGE_SDDR55=m
+CONFIG_USB_STORAGE_JUMPSHOT=m
+CONFIG_USB_SERIAL=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+CONFIG_USB_SERIAL_PL2303=m
+CONFIG_USB_EMI62=m
+CONFIG_USB_EMI26=m
+CONFIG_USB_SISUSBVGA=m
+CONFIG_RENESAS_SH7751_INTC=y
+CONFIG_RENESAS_SH7751IRL_INTC=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT3_FS=y
+CONFIG_REISERFS_FS=y
+CONFIG_ISO9660_FS=m
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_NTFS_FS=m
+CONFIG_NTFS_RW=y
+CONFIG_TMPFS=y
+CONFIG_ROMFS_FS=y
+CONFIG_UFS_FS=m
+CONFIG_NFS_FS=m
+CONFIG_NFSD=m
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_932=y
+CONFIG_INIT_STACK_NONE=y
+CONFIG_CRC_T10DIF=y
+CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_FTRACE is not set
+CONFIG_SH_STANDARD_BIOS=y
-- 
2.39.2

[DO NOT MERGE v5 37/37] sh: j2_defconfig: update

[Yoshinori Sato]

I've changed some symbols related to DeviceTree,
so let's take care of those changes.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 arch/sh/configs/j2_defconfig | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/arch/sh/configs/j2_defconfig b/arch/sh/configs/j2_defconfig
index 2eb81ebe3888..cdc8ed244618 100644
--- a/arch/sh/configs/j2_defconfig
+++ b/arch/sh/configs/j2_defconfig
@@ -1,18 +1,15 @@
-CONFIG_SMP=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_CPU_SUBTYPE_J2=y
 CONFIG_MEMORY_START=0x10000000
-CONFIG_MEMORY_SIZE=0x04000000
 CONFIG_CPU_BIG_ENDIAN=y
-CONFIG_SH_DEVICE_TREE=y
-CONFIG_SH_JCORE_SOC=y
+CONFIG_SH_OF_BOARD=y
 CONFIG_HZ_100=y
+CONFIG_SMP=y
 CONFIG_CMDLINE_OVERWRITE=y
 CONFIG_CMDLINE="console=ttyUL0 earlycon"
-CONFIG_BINFMT_ELF_FDPIC=y
 CONFIG_BINFMT_FLAT=y
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -21,7 +18,6 @@ CONFIG_INET=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_NETDEVICES=y
-CONFIG_SERIAL_EARLYCON=y
 CONFIG_SERIAL_UARTLITE=y
 CONFIG_SERIAL_UARTLITE_CONSOLE=y
 CONFIG_I2C=y
@@ -30,8 +26,6 @@ CONFIG_SPI_JCORE=y
 CONFIG_WATCHDOG=y
 CONFIG_MMC=y
 CONFIG_MMC_SPI=y
-CONFIG_CLKSRC_JCORE_PIT=y
-CONFIG_JCORE_AIC=y
 CONFIG_EXT4_FS=y
 CONFIG_VFAT_FS=y
 CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
@@ -40,3 +34,4 @@ CONFIG_NLS_DEFAULT="utf8"
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ASCII=y
 CONFIG_NLS_UTF8=y
+CONFIG_INIT_STACK_NONE=y
-- 
2.39.2