[PATCH v2 00/15] MIPS Boston board support

[PATCH v2 00/15] MIPS Boston board support

[Paul Burton]

This series introduces support for the Imagination Technologies MIPS
Boston development board. Boston is an FPGA-based development board
akin to the much older Malta board, built around a Xilinx FPGA running
a MIPS CPU & other logic including a PCIe root port connected to an
Intel EG20T Platform Controller Hub. This provides a base set of
peripherals including SATA, USB, SD/MMC, ethernet, I2C & GPIOs. PCIe
slots are also present for expansion.

v2 of this series splits out the pch_gbe ethernet driver changes to a
separate series, but keeps the Xilinx PCIe driver changes since PCIe is
so central to the Boston board & the series has shrunk somewhat since
its earlier submission.

Applies atop v4.5-rc2.

Paul Burton (15):
  dt-bindings: ascii-lcd: Document a binding for simple ASCII LCDs
  auxdisplay: driver for simple memory mapped ASCII LCD displays
  MIPS: PCI: Compatibility with ARM-like PCI host drivers
  PCI: xilinx: Keep references to both IRQ domains
  PCI: xilinx: Unify INTx & MSI interrupt FIFO decode
  PCI: xilinx: Always clear interrupt decode register
  PCI: xilinx: Clear interrupt FIFO during probe
  PCI: xilinx: Fix INTX irq dispatch
  PCI: xilinx: Allow build on MIPS platforms
  misc: pch_phub: Allow build on MIPS platforms
  dmaengine: pch_dma: Allow build on MIPS platforms
  ptp: pch: Allow build on MIPS platforms
  MIPS: Support for generating FIT (.itb) images
  dt-bindings: mips: img,boston: Document img,boston binding
  MIPS: Boston board support

 Documentation/devicetree/bindings/ascii-lcd.txt    |  10 +
 .../devicetree/bindings/mips/img/boston.txt        |  15 ++
 MAINTAINERS                                        |  14 ++
 arch/mips/Kbuild.platforms                         |   1 +
 arch/mips/Kconfig                                  |  48 +++++
 arch/mips/Makefile                                 |   6 +-
 arch/mips/boot/Makefile                            |  61 ++++++
 arch/mips/boot/dts/Makefile                        |   1 +
 arch/mips/boot/dts/img/Makefile                    |   7 +
 arch/mips/boot/dts/img/boston.dts                  | 204 ++++++++++++++++++
 arch/mips/boot/skeleton.its                        |  24 +++
 arch/mips/boston/Makefile                          |  12 ++
 arch/mips/boston/Platform                          |   8 +
 arch/mips/boston/init.c                            | 106 ++++++++++
 arch/mips/boston/int.c                             |  33 +++
 arch/mips/boston/time.c                            |  89 ++++++++
 arch/mips/boston/vmlinux.its                       |  23 ++
 arch/mips/configs/boston_defconfig                 | 173 +++++++++++++++
 .../asm/mach-boston/cpu-feature-overrides.h        |  26 +++
 arch/mips/include/asm/mach-boston/irq.h            |  18 ++
 arch/mips/include/asm/mach-boston/spaces.h         |  20 ++
 arch/mips/include/asm/pci.h                        |  67 +++++-
 arch/mips/lib/iomap-pci.c                          |   2 +-
 arch/mips/pci/Makefile                             |   6 +
 arch/mips/pci/pci-generic.c                        | 138 ++++++++++++
 arch/mips/pci/pci-legacy.c                         | 232 +++++++++++++++++++++
 arch/mips/pci/pci.c                                | 226 +-------------------
 drivers/auxdisplay/Kconfig                         |   7 +
 drivers/auxdisplay/Makefile                        |   1 +
 drivers/auxdisplay/ascii-lcd.c                     | 230 ++++++++++++++++++++
 drivers/dma/Kconfig                                |   2 +-
 drivers/misc/Kconfig                               |   2 +-
 drivers/pci/host/Kconfig                           |   2 +-
 drivers/pci/host/pcie-xilinx.c                     | 125 ++++++-----
 drivers/ptp/Kconfig                                |   2 +-
 35 files changed, 1649 insertions(+), 292 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/ascii-lcd.txt
 create mode 100644 Documentation/devicetree/bindings/mips/img/boston.txt
 create mode 100644 arch/mips/boot/dts/img/Makefile
 create mode 100644 arch/mips/boot/dts/img/boston.dts
 create mode 100644 arch/mips/boot/skeleton.its
 create mode 100644 arch/mips/boston/Makefile
 create mode 100644 arch/mips/boston/Platform
 create mode 100644 arch/mips/boston/init.c
 create mode 100644 arch/mips/boston/int.c
 create mode 100644 arch/mips/boston/time.c
 create mode 100644 arch/mips/boston/vmlinux.its
 create mode 100644 arch/mips/configs/boston_defconfig
 create mode 100644 arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
 create mode 100644 arch/mips/include/asm/mach-boston/irq.h
 create mode 100644 arch/mips/include/asm/mach-boston/spaces.h
 create mode 100644 arch/mips/pci/pci-generic.c
 create mode 100644 arch/mips/pci/pci-legacy.c
 create mode 100644 drivers/auxdisplay/ascii-lcd.c

-- 
2.7.0

[PATCH v2 01/15] dt-bindings: ascii-lcd: Document a binding for simple ASCII LCDs

[Paul Burton]

Add documentation for a devicetree binding for simple memory-mapped
ASCII LCD displays, such as those found on the Imagination Technologies
Boston & Malta development boards.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---

Changes in v2: None

 Documentation/devicetree/bindings/ascii-lcd.txt | 10 ++++++++++
 MAINTAINERS                                     |  5 +++++
 2 files changed, 15 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ascii-lcd.txt

diff --git a/Documentation/devicetree/bindings/ascii-lcd.txt b/Documentation/devicetree/bindings/ascii-lcd.txt
new file mode 100644
index 0000000..40ae536
--- /dev/null
+++ b/Documentation/devicetree/bindings/ascii-lcd.txt
@@ -0,0 +1,10 @@
+Binding for simple memory-mapped ASCII LCD displays
+
+Required properties:
+- compatible : should be one of:
+    "img,boston-lcd"
+    "mti,malta-lcd"
+- reg : memory region locating the device registers
+
+The layout of the registers & properties of the display are determined
+from the compatible string, making this binding somewhat trivial.
diff --git a/MAINTAINERS b/MAINTAINERS
index 30aca4a..cd19e5f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1819,6 +1819,11 @@ S:	Maintained
 F:	Documentation/hwmon/asc7621
 F:	drivers/hwmon/asc7621.c
 
+ASCII LCD DRIVER
+M:	Paul Burton <paul.burton@imgtec.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/ascii-lcd.txt
+
 ASUS NOTEBOOKS AND EEEPC ACPI/WMI EXTRAS DRIVERS
 M:	Corentin Chary <corentin.chary@gmail.com>
 L:	acpi4asus-user@lists.sourceforge.net
-- 
2.7.0

[PATCH v2 14/15] dt-bindings: mips: img,boston: Document img,boston binding

[Paul Burton]

Add documentation for the simple img,boston devicetree binding & the
boot protocol used to pass the devicetree to the kernel.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---

Changes in v2: None

 Documentation/devicetree/bindings/mips/img/boston.txt | 15 +++++++++++++++
 MAINTAINERS                                           |  5 +++++
 2 files changed, 20 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mips/img/boston.txt

diff --git a/Documentation/devicetree/bindings/mips/img/boston.txt b/Documentation/devicetree/bindings/mips/img/boston.txt
new file mode 100644
index 0000000..27b2806
--- /dev/null
+++ b/Documentation/devicetree/bindings/mips/img/boston.txt
@@ -0,0 +1,15 @@
+Imagination Technologies Boston Development Board
+=================================================
+
+Required properties:
+--------------------
+ - compatible: Must be "img,boston".
+
+Boot protocol:
+--------------
+In accordance with the MIPS UHI specification[1], the bootloader must pass the
+following arguments to the kernel:
+ - $a0: -2.
+ - $a1: KSEG0 address of the flattened device-tree blob.
+
+[1] http://prplfoundation.org/wiki/MIPS_documentation
diff --git a/MAINTAINERS b/MAINTAINERS
index 301bc429..ed27a53 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5517,6 +5517,11 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git
 S:	Supported
 F:	security/integrity/ima/
 
+IMGTEC BOSTON PLATFORM SUPPORT
+M:	Paul Burton <paul.burton@imgtec.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/mips/img/boston.txt
+
 IMGTEC IR DECODER DRIVER
 M:	James Hogan <james.hogan@imgtec.com>
 S:	Maintained
-- 
2.7.0

[PATCH v2 15/15] MIPS: Boston board support

[Paul Burton]

Add support for the MIPS Boston development board. Boston is an
FPGA-based development board akin to the much older Malta board. As such
it's very configurable, but in broad terms it's built around a Xilinx
FPGA running a MIPS core & other logic, and 3 Xilinx PCIe root ports -
one of which is connected to an Intel EG20T Platform Controller Hub to
provide a base set of peripherals.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---

Changes in v2:
- Add NMI & EJTAG exception handling.

 MAINTAINERS                                        |   3 +
 arch/mips/Kbuild.platforms                         |   1 +
 arch/mips/Kconfig                                  |  42 +++++
 arch/mips/boot/dts/Makefile                        |   1 +
 arch/mips/boot/dts/img/Makefile                    |   7 +
 arch/mips/boot/dts/img/boston.dts                  | 204 +++++++++++++++++++++
 arch/mips/boston/Makefile                          |  12 ++
 arch/mips/boston/Platform                          |   8 +
 arch/mips/boston/init.c                            | 106 +++++++++++
 arch/mips/boston/int.c                             |  33 ++++
 arch/mips/boston/time.c                            |  89 +++++++++
 arch/mips/boston/vmlinux.its                       |  23 +++
 arch/mips/configs/boston_defconfig                 | 173 +++++++++++++++++
 .../asm/mach-boston/cpu-feature-overrides.h        |  26 +++
 arch/mips/include/asm/mach-boston/irq.h            |  18 ++
 arch/mips/include/asm/mach-boston/spaces.h         |  20 ++
 16 files changed, 766 insertions(+)
 create mode 100644 arch/mips/boot/dts/img/Makefile
 create mode 100644 arch/mips/boot/dts/img/boston.dts
 create mode 100644 arch/mips/boston/Makefile
 create mode 100644 arch/mips/boston/Platform
 create mode 100644 arch/mips/boston/init.c
 create mode 100644 arch/mips/boston/int.c
 create mode 100644 arch/mips/boston/time.c
 create mode 100644 arch/mips/boston/vmlinux.its
 create mode 100644 arch/mips/configs/boston_defconfig
 create mode 100644 arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
 create mode 100644 arch/mips/include/asm/mach-boston/irq.h
 create mode 100644 arch/mips/include/asm/mach-boston/spaces.h

diff --git a/MAINTAINERS b/MAINTAINERS
index ed27a53..c48bfb2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5520,6 +5520,9 @@ F:	security/integrity/ima/
 IMGTEC BOSTON PLATFORM SUPPORT
 M:	Paul Burton <paul.burton@imgtec.com>
 S:	Maintained
+F:	arch/mips/boot/dts/img/boston.dts
+F:	arch/mips/boston/
+F:	arch/mips/include/asm/mach-boston/
 F:	Documentation/devicetree/bindings/mips/img/boston.txt
 
 IMGTEC IR DECODER DRIVER
diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
index c5cd63a..e5bc30f 100644
--- a/arch/mips/Kbuild.platforms
+++ b/arch/mips/Kbuild.platforms
@@ -7,6 +7,7 @@ platforms += ath79
 platforms += bcm47xx
 platforms += bcm63xx
 platforms += bmips
+platforms += boston
 platforms += cavium-octeon
 platforms += cobalt
 platforms += dec
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 82a1f71..787f76d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -216,6 +216,48 @@ config BCM63XX
 	help
 	 Support for BCM63XX based boards
 
+config BOSTON
+	bool "MIPS Boston board"
+	select ARCH_REQUIRE_GPIOLIB
+	select BOOT_ELF32
+	select BOOT_RAW
+	select BUILTIN_DTB
+	select CEVT_R4K
+	select COMMON_CLK
+	select CSRC_R4K
+	select DMA_NONCOHERENT
+	select HW_HAS_PCI
+	select IRQ_MIPS_CPU
+	select MIPS_CPU_SCACHE
+	select MIPS_GENERIC_PCI
+	select MIPS_GIC
+	select MIPS_L1_CACHE_SHIFT_6
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_HAS_CPU_MIPS32_R2
+	select SYS_HAS_CPU_MIPS32_R3_5
+	select SYS_HAS_CPU_MIPS32_R5
+	select SYS_HAS_CPU_MIPS32_R6
+	select SYS_HAS_CPU_MIPS64_R1
+	select SYS_HAS_CPU_MIPS64_R2
+	select SYS_HAS_CPU_MIPS64_R6
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_64BIT_KERNEL
+	select SYS_SUPPORTS_BIG_ENDIAN
+	select SYS_SUPPORTS_HIGHMEM
+	select SYS_SUPPORTS_LITTLE_ENDIAN
+	select SYS_SUPPORTS_MIPS_CPS
+	select SYS_SUPPORTS_MULTITHREADING
+	select SYS_SUPPORTS_ZBOOT
+	select USE_OF
+	help
+	  This enables support for the MIPS Boston development board from
+	  Imagination Technologies.
+
+	  Boston provides most peripherals using an Intel EG20T Platform
+	  Controller Hub in addition to some basics such as a UART & LCD, and
+	  provides PCIe slots for expansion. It is most commonly used with a
+	  daughterboard built around an FPGA for development purposes.
+
 config MIPS_COBALT
 	bool "Cobalt Server"
 	select CEVT_R4K
diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
index fc7a0a9..b9db492 100644
--- a/arch/mips/boot/dts/Makefile
+++ b/arch/mips/boot/dts/Makefile
@@ -1,5 +1,6 @@
 dts-dirs	+= brcm
 dts-dirs	+= cavium-octeon
+dts-dirs	+= img
 dts-dirs	+= ingenic
 dts-dirs	+= lantiq
 dts-dirs	+= mti
diff --git a/arch/mips/boot/dts/img/Makefile b/arch/mips/boot/dts/img/Makefile
new file mode 100644
index 0000000..6cc1737
--- /dev/null
+++ b/arch/mips/boot/dts/img/Makefile
@@ -0,0 +1,7 @@
+dtb-$(CONFIG_BOSTON)		+= boston.dtb
+
+# Force kbuild to make empty built-in.o if necessary
+obj-				+= dummy.o
+
+always				:= $(dtb-y)
+clean-files			:= *.dtb *.dtb.S
diff --git a/arch/mips/boot/dts/img/boston.dts b/arch/mips/boot/dts/img/boston.dts
new file mode 100644
index 0000000..ee0bd0d
--- /dev/null
+++ b/arch/mips/boot/dts/img/boston.dts
@@ -0,0 +1,204 @@
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/mips-gic.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "img,boston";
+
+	chosen {
+		stdout-path = &uart0;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "img,mips";
+			reg = <0>;
+			clocks = <&clk_sys>;
+		};
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x10000000>;
+	};
+
+	clk_sys: clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <10000000>;
+	};
+
+	axi4 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <>;
+
+		gic: interrupt-controller {
+			compatible = "mti,gic";
+
+			interrupt-controller;
+			#interrupt-cells = <3>;
+
+			timer {
+				compatible = "mti,gic-timer";
+				interrupts = <GIC_LOCAL 1 IRQ_TYPE_NONE>;
+				clocks = <&clk_sys>;
+			};
+		};
+
+		uart0: uart@17ffe000 {
+			compatible = "ns16550a";
+			reg = <0x17ffe000 0x1000>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SHARED 3 IRQ_TYPE_LEVEL_HIGH>;
+
+			clocks = <&clk_sys>;
+		};
+
+		lcd: lcd@17fff000 {
+			compatible = "img,boston-lcd";
+			reg = <0x17fff000 0x8>;
+		};
+
+		pci0: pci@10000000 {
+			compatible = "xlnx,axi-pcie-host-1.00.a";
+			device_type = "pci";
+			reg = <0x10000000 0x2000000>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SHARED 2 IRQ_TYPE_LEVEL_HIGH>;
+
+			ranges = <0x02000000 0 0x40000000
+				  0x40000000 0 0x40000000>;
+
+			interrupt-map-mask = <0 0 0 7>;
+			interrupt-map = <0 0 0 1 &pci0_intc 0>,
+					<0 0 0 2 &pci0_intc 1>,
+					<0 0 0 3 &pci0_intc 2>,
+					<0 0 0 4 &pci0_intc 3>;
+
+			pci0_intc: interrupt-controller {
+				interrupt-controller;
+				#address-cells = <0>;
+				#interrupt-cells = <1>;
+			};
+		};
+
+		pci1: pci@12000000 {
+			compatible = "xlnx,axi-pcie-host-1.00.a";
+			device_type = "pci";
+			reg = <0x12000000 0x2000000>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SHARED 1 IRQ_TYPE_LEVEL_HIGH>;
+
+			ranges = <0x02000000 0 0x20000000
+				  0x20000000 0 0x20000000>;
+
+			interrupt-map-mask = <0 0 0 7>;
+			interrupt-map = <0 0 0 1 &pci1_intc 0>,
+					<0 0 0 2 &pci1_intc 1>,
+					<0 0 0 3 &pci1_intc 2>,
+					<0 0 0 4 &pci1_intc 3>;
+
+			pci1_intc: interrupt-controller {
+				interrupt-controller;
+				#address-cells = <0>;
+				#interrupt-cells = <1>;
+			};
+		};
+
+		pci2: pci@14000000 {
+			compatible = "xlnx,axi-pcie-host-1.00.a";
+			device_type = "pci";
+			reg = <0x14000000 0x2000000>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SHARED 0 IRQ_TYPE_LEVEL_HIGH>;
+
+			ranges = <0x02000000 0 0x16000000
+				  0x16000000 0 0x100000>;
+
+			interrupt-map-mask = <0 0 0 7>;
+			interrupt-map = <0 0 0 1 &pci2_intc 0>,
+					<0 0 0 2 &pci2_intc 1>,
+					<0 0 0 3 &pci2_intc 2>,
+					<0 0 0 4 &pci2_intc 3>;
+
+			pci2_intc: interrupt-controller {
+				interrupt-controller;
+				#address-cells = <0>;
+				#interrupt-cells = <1>;
+			};
+
+			pci2_root@0,0,0 {
+				compatible = "pci10ee,7021";
+				reg = <0x00000000 0 0 0 0>;
+
+				#address-cells = <3>;
+				#size-cells = <2>;
+				#interrupt-cells = <1>;
+
+				eg20t_bridge@1,0,0 {
+					compatible = "pci8086,8800";
+					reg = <0x00010000 0 0 0 0>;
+
+					#address-cells = <3>;
+					#size-cells = <2>;
+					#interrupt-cells = <1>;
+
+					eg20t_mac@2,0,1 {
+						compatible = "pci8086,8802";
+						reg = <0x00020100 0 0 0 0>;
+						phy-reset-gpios = <&eg20t_gpio 6 GPIO_ACTIVE_LOW>;
+					};
+
+					eg20t_gpio: eg20t_gpio@2,0,2 {
+						compatible = "pci8086,8803";
+						reg = <0x00020200 0 0 0 0>;
+
+						gpio-controller;
+						#gpio-cells = <2>;
+					};
+
+					eg20t_i2c@2,12,2 {
+						compatible = "pci8086,8817";
+						reg = <0x00026200 0 0 0 0>;
+
+						#address-cells = <1>;
+						#size-cells = <0>;
+
+						rtc@0x68 {
+							compatible = "st,m41t81s";
+							reg = <0x68>;
+						};
+					};
+				};
+			};
+		};
+	};
+};
diff --git a/arch/mips/boston/Makefile b/arch/mips/boston/Makefile
new file mode 100644
index 0000000..0a13246
--- /dev/null
+++ b/arch/mips/boston/Makefile
@@ -0,0 +1,12 @@
+#
+# Copyright (C) 2015 Imagination Technologies
+# Author: Paul Burton <paul.burton@imgtec.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+obj-y	+= init.o
+obj-y	+= int.o
+obj-y	+= time.o
diff --git a/arch/mips/boston/Platform b/arch/mips/boston/Platform
new file mode 100644
index 0000000..d3dad1e
--- /dev/null
+++ b/arch/mips/boston/Platform
@@ -0,0 +1,8 @@
+#
+# MIPS Boston board
+#
+platform-$(CONFIG_BOSTON)	+= boston/
+cflags-$(CONFIG_BOSTON)		+= -I$(srctree)/arch/mips/include/asm/mach-boston
+load-$(CONFIG_BOSTON)		+= 0xffffffff80100000
+all-$(CONFIG_BOSTON)		:= $(COMPRESSION_FNAME).bin
+its-$(CONFIG_BOSTON)		+= boston/vmlinux.its
diff --git a/arch/mips/boston/init.c b/arch/mips/boston/init.c
new file mode 100644
index 0000000..fd37944
--- /dev/null
+++ b/arch/mips/boston/init.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+#include <linux/string.h>
+
+#include <asm/cacheflush.h>
+#include <asm/fw/fw.h>
+#include <asm/mips-cm.h>
+#include <asm/mips-cpc.h>
+#include <asm/prom.h>
+#include <asm/smp-ops.h>
+#include <asm/traps.h>
+
+void __init plat_mem_setup(void)
+{
+	if (fw_arg0 != -2)
+		panic("Device-tree not present");
+
+	__dt_setup_arch((void *)fw_arg1);
+	strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+}
+
+void __init device_tree_init(void)
+{
+	unflatten_and_copy_device_tree();
+}
+
+static int __init publish_devices(void)
+{
+	if (!of_have_populated_dt())
+		panic("Device-tree not present");
+
+	if (of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL))
+		panic("Failed to populate DT");
+
+	return 0;
+}
+arch_initcall(publish_devices);
+
+phys_addr_t mips_cpc_default_phys_base(void)
+{
+	return 0x16200000;
+}
+
+phys_addr_t mips_cdmm_phys_base(void)
+{
+	return 0x16140000;
+}
+
+const char *get_system_type(void)
+{
+	return "MIPS Boston";
+}
+
+static void __init mips_nmi_setup(void)
+{
+	void *base;
+	extern char except_vec_nmi;
+
+	base = cpu_has_veic ?
+		(void *)(CAC_BASE + 0xa80) :
+		(void *)(CAC_BASE + 0x380);
+	memcpy(base, &except_vec_nmi, 0x80);
+	flush_icache_range((unsigned long)base,
+			   (unsigned long)base + 0x80);
+}
+
+static void __init mips_ejtag_setup(void)
+{
+	void *base;
+	extern char except_vec_ejtag_debug;
+
+	base = cpu_has_veic ?
+		(void *)(CAC_BASE + 0xa00) :
+		(void *)(CAC_BASE + 0x300);
+	memcpy(base, &except_vec_ejtag_debug, 0x80);
+	flush_icache_range((unsigned long)base,
+			   (unsigned long)base + 0x80);
+}
+
+void __init prom_init(void)
+{
+	board_nmi_handler_setup = mips_nmi_setup;
+	board_ejtag_handler_setup = mips_ejtag_setup;
+
+	fw_init_cmdline();
+	mips_cm_probe();
+	mips_cpc_probe();
+	register_cps_smp_ops();
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
diff --git a/arch/mips/boston/int.c b/arch/mips/boston/int.c
new file mode 100644
index 0000000..4069424
--- /dev/null
+++ b/arch/mips/boston/int.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/irqchip.h>
+#include <linux/of_irq.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/mips-cm.h>
+#include <asm/traps.h>
+
+static int be_handler(struct pt_regs *regs, int is_fixup)
+{
+	mips_cm_error_report();
+	return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL;
+}
+
+void __init arch_init_irq(void)
+{
+	board_be_handler = be_handler;
+
+	if (!cpu_has_veic)
+		mips_cpu_irq_init();
+
+	irqchip_init();
+}
diff --git a/arch/mips/boston/time.c b/arch/mips/boston/time.c
new file mode 100644
index 0000000..a51710a
--- /dev/null
+++ b/arch/mips/boston/time.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/init.h>
+#include <linux/irqchip/mips-gic.h>
+#include <linux/types.h>
+
+#include <asm/irq.h>
+#include <asm/time.h>
+
+void __init plat_time_init(void)
+{
+	struct device_node *np;
+	struct clk *clk;
+
+	of_clk_init(NULL);
+	clocksource_probe();
+
+	np = of_get_cpu_node(0, NULL);
+	if (!np) {
+		pr_err("Failed to get CPU node\n");
+		return;
+	}
+
+	clk = of_clk_get(np, 0);
+	if (IS_ERR(clk)) {
+		pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
+		return;
+	}
+
+	mips_hpt_frequency = clk_get_rate(clk) / 2;
+	clk_put(clk);
+}
+
+int get_c0_fdc_int(void)
+{
+	int mips_cpu_fdc_irq;
+
+	if (cpu_has_veic)
+		panic("Unimplemented!");
+	else if (gic_present)
+		mips_cpu_fdc_irq = gic_get_c0_fdc_int();
+	else if (cp0_fdc_irq >= 0)
+		mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
+	else
+		mips_cpu_fdc_irq = -1;
+
+	return mips_cpu_fdc_irq;
+}
+
+int get_c0_perfcount_int(void)
+{
+	int mips_cpu_perf_irq;
+
+	if (cpu_has_veic)
+		panic("Unimplemented!");
+	else if (gic_present)
+		mips_cpu_perf_irq = gic_get_c0_perfcount_int();
+	else if (cp0_perfcount_irq >= 0)
+		mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
+	else
+		mips_cpu_perf_irq = -1;
+
+	return mips_cpu_perf_irq;
+}
+
+unsigned int get_c0_compare_int(void)
+{
+	int mips_cpu_timer_irq;
+
+	if (cpu_has_veic)
+		panic("Unimplemented!");
+	else if (gic_present)
+		mips_cpu_timer_irq = gic_get_c0_compare_int();
+	else
+		mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
+
+	return mips_cpu_timer_irq;
+}
diff --git a/arch/mips/boston/vmlinux.its b/arch/mips/boston/vmlinux.its
new file mode 100644
index 0000000..643ac63
--- /dev/null
+++ b/arch/mips/boston/vmlinux.its
@@ -0,0 +1,23 @@
+/ {
+	images {
+		fdt@boston {
+			description = "img,boston Device Tree";
+			data = /incbin/("boot/dts/img/boston.dtb");
+			type = "flat_dt";
+			arch = "mips";
+			compression = "none";
+			hash@1 {
+				algo = "sha1";
+			};
+		};
+	};
+
+	configurations {
+		default = "conf@boston";
+		conf@boston {
+			description = "Boot Linux kernel";
+			kernel = "kernel@0";
+			fdt = "fdt@boston";
+		};
+	};
+};
diff --git a/arch/mips/configs/boston_defconfig b/arch/mips/configs/boston_defconfig
new file mode 100644
index 0000000..4a23eda
--- /dev/null
+++ b/arch/mips/configs/boston_defconfig
@@ -0,0 +1,173 @@
+CONFIG_BOSTON=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_MIPS64_R6=y
+CONFIG_64BIT=y
+CONFIG_PAGE_SIZE_16KB=y
+CONFIG_MIPS_CPS=y
+CONFIG_CPU_HAS_MSA=y
+# CONFIG_COMPACTION is not set
+CONFIG_NR_CPUS=8
+CONFIG_HZ_48=y
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_AUDIT=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=15
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_EMBEDDED=y
+CONFIG_SLAB=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PCI=y
+CONFIG_PCI_MSI=y
+CONFIG_PCIE_XILINX=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_MIPS32_O32=y
+CONFIG_MIPS32_N32=y
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_XFRM_USER=y
+CONFIG_NET_KEY=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_NET_IPIP=y
+CONFIG_SYN_COOKIES=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+# CONFIG_INET_DIAG is not set
+# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=y
+CONFIG_PCH_PHUB=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_SG=y
+# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_ATA=y
+CONFIG_SATA_AHCI=y
+# CONFIG_ATA_SFF is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_VENDOR_ADAPTEC is not set
+# CONFIG_NET_VENDOR_AGERE is not set
+# CONFIG_NET_VENDOR_ALTEON is not set
+# CONFIG_NET_VENDOR_AMD is not set
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_ATHEROS is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_BROCADE is not set
+# CONFIG_NET_VENDOR_CHELSIO is not set
+# CONFIG_NET_VENDOR_CISCO is not set
+# CONFIG_NET_VENDOR_DEC is not set
+# CONFIG_NET_VENDOR_DLINK is not set
+# CONFIG_NET_VENDOR_EMULEX is not set
+# CONFIG_NET_VENDOR_EXAR is not set
+# CONFIG_NET_VENDOR_HP is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MELLANOX is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_MYRI is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NVIDIA is not set
+CONFIG_PCH_GBE=y
+# CONFIG_NET_PACKET_ENGINE is not set
+# CONFIG_NET_VENDOR_QLOGIC is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_REALTEK is not set
+# CONFIG_NET_VENDOR_RDC is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SILAN is not set
+# CONFIG_NET_VENDOR_SIS is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SUN is not set
+# CONFIG_NET_VENDOR_TEHUTI is not set
+# CONFIG_NET_VENDOR_TI is not set
+# CONFIG_NET_VENDOR_TOSHIBA is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_WLAN is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+CONFIG_LEGACY_PTY_COUNT=4
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+# CONFIG_SERIAL_8250_PCI is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_EG20T=y
+CONFIG_SPI=y
+CONFIG_SPI_TOPCLIFF_PCH=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_PCH=y
+# CONFIG_HWMON is not set
+CONFIG_REGULATOR=y
+# CONFIG_VGA_ARB is not set
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_STORAGE=y
+CONFIG_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PCI=y
+# CONFIG_MMC_RICOH_MMC is not set
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_M41T80=y
+CONFIG_DMADEVICES=y
+CONFIG_PCH_DMA=y
+CONFIG_AUXDISPLAY=y
+CONFIG_ASCII_LCD=y
+# CONFIG_MIPS_PLATFORM_DEVICES is not set
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXT4_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_TMPFS=y
+CONFIG_CONFIGFS_FS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NFS_FS=y
+CONFIG_NFS_V4=y
+CONFIG_NFS_V4_1=y
+CONFIG_NFS_V4_2=y
+CONFIG_ROOT_NFS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_INFO_REDUCED=y
+CONFIG_FRAME_WARN=1024
+CONFIG_READABLE_ASM=y
+CONFIG_DEBUG_FS=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_FTRACE is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE="earlycon console=ttyS0,115200"
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+CONFIG_LIBCRC32C=y
diff --git a/arch/mips/include/asm/mach-boston/cpu-feature-overrides.h b/arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
new file mode 100644
index 0000000..e1bd9b9
--- /dev/null
+++ b/arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_MACH_BOSTON_CPU_FEATURE_OVERRIDES_H__
+#define __ASM_MACH_BOSTON_CPU_FEATURE_OVERRIDES_H__
+
+#define cpu_has_4kex			1
+#define cpu_has_4k_cache		1
+#define cpu_has_clo_clz			1
+#define cpu_has_counter			1
+#define cpu_has_divec			1
+#define cpu_has_llsc			1
+#define cpu_has_mcheck			1
+#define cpu_has_nofpuex			0
+#define cpu_has_tlb			1
+#define cpu_has_vce			0
+#define cpu_icache_snoops_remote_store	1
+
+#endif /* __ASM_MACH_BOSTON_CPU_FEATURE_OVERRIDES_H__ */
diff --git a/arch/mips/include/asm/mach-boston/irq.h b/arch/mips/include/asm/mach-boston/irq.h
new file mode 100644
index 0000000..95ac10c
--- /dev/null
+++ b/arch/mips/include/asm/mach-boston/irq.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_MACH_BOSTON_IRQ_H__
+#define __ASM_MACH_BOSTON_IRQ_H__
+
+#define NR_IRQS 256
+
+#include_next <irq.h>
+
+#endif /* __ASM_MACH_BOSTON_IRQ_H__ */
diff --git a/arch/mips/include/asm/mach-boston/spaces.h b/arch/mips/include/asm/mach-boston/spaces.h
new file mode 100644
index 0000000..e7f4c59
--- /dev/null
+++ b/arch/mips/include/asm/mach-boston/spaces.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_MACH_BOSTON_SPACES_H__
+#define __ASM_MACH_BOSTON_SPACES_H__
+
+#ifdef CONFIG_64BIT
+# define CAC_BASE _AC(0xa800000000000000, UL)
+#endif
+
+#include <asm/mach-generic/spaces.h>
+
+#endif /* __ASM_MACH_BOSTON_SPACES_H__ */
-- 
2.7.0

Re: [PATCH v2 00/15] MIPS Boston board support

[Michal Simek]

On 3.2.2016 12:30, Paul Burton wrote:
> This series introduces support for the Imagination Technologies MIPS
> Boston development board. Boston is an FPGA-based development board
> akin to the much older Malta board, built around a Xilinx FPGA running
> a MIPS CPU & other logic including a PCIe root port connected to an
> Intel EG20T Platform Controller Hub. This provides a base set of
> peripherals including SATA, USB, SD/MMC, ethernet, I2C & GPIOs. PCIe
> slots are also present for expansion.
> 
> v2 of this series splits out the pch_gbe ethernet driver changes to a
> separate series, but keeps the Xilinx PCIe driver changes since PCIe is
> so central to the Boston board & the series has shrunk somewhat since
> its earlier submission.
> 
> Applies atop v4.5-rc2.
> 
> Paul Burton (15):
>   dt-bindings: ascii-lcd: Document a binding for simple ASCII LCDs
>   auxdisplay: driver for simple memory mapped ASCII LCD displays
>   MIPS: PCI: Compatibility with ARM-like PCI host drivers
>   PCI: xilinx: Keep references to both IRQ domains
>   PCI: xilinx: Unify INTx & MSI interrupt FIFO decode
>   PCI: xilinx: Always clear interrupt decode register
>   PCI: xilinx: Clear interrupt FIFO during probe
>   PCI: xilinx: Fix INTX irq dispatch
>   PCI: xilinx: Allow build on MIPS platforms
>   misc: pch_phub: Allow build on MIPS platforms
>   dmaengine: pch_dma: Allow build on MIPS platforms
>   ptp: pch: Allow build on MIPS platforms
>   MIPS: Support for generating FIT (.itb) images
>   dt-bindings: mips: img,boston: Document img,boston binding
>   MIPS: Boston board support
> 
>  Documentation/devicetree/bindings/ascii-lcd.txt    |  10 +
>  .../devicetree/bindings/mips/img/boston.txt        |  15 ++
>  MAINTAINERS                                        |  14 ++
>  arch/mips/Kbuild.platforms                         |   1 +
>  arch/mips/Kconfig                                  |  48 +++++
>  arch/mips/Makefile                                 |   6 +-
>  arch/mips/boot/Makefile                            |  61 ++++++
>  arch/mips/boot/dts/Makefile                        |   1 +
>  arch/mips/boot/dts/img/Makefile                    |   7 +
>  arch/mips/boot/dts/img/boston.dts                  | 204 ++++++++++++++++++
>  arch/mips/boot/skeleton.its                        |  24 +++
>  arch/mips/boston/Makefile                          |  12 ++
>  arch/mips/boston/Platform                          |   8 +
>  arch/mips/boston/init.c                            | 106 ++++++++++
>  arch/mips/boston/int.c                             |  33 +++
>  arch/mips/boston/time.c                            |  89 ++++++++
>  arch/mips/boston/vmlinux.its                       |  23 ++
>  arch/mips/configs/boston_defconfig                 | 173 +++++++++++++++
>  .../asm/mach-boston/cpu-feature-overrides.h        |  26 +++
>  arch/mips/include/asm/mach-boston/irq.h            |  18 ++
>  arch/mips/include/asm/mach-boston/spaces.h         |  20 ++
>  arch/mips/include/asm/pci.h                        |  67 +++++-
>  arch/mips/lib/iomap-pci.c                          |   2 +-
>  arch/mips/pci/Makefile                             |   6 +
>  arch/mips/pci/pci-generic.c                        | 138 ++++++++++++
>  arch/mips/pci/pci-legacy.c                         | 232 +++++++++++++++++++++
>  arch/mips/pci/pci.c                                | 226 +-------------------
>  drivers/auxdisplay/Kconfig                         |   7 +
>  drivers/auxdisplay/Makefile                        |   1 +
>  drivers/auxdisplay/ascii-lcd.c                     | 230 ++++++++++++++++++++
>  drivers/dma/Kconfig                                |   2 +-
>  drivers/misc/Kconfig                               |   2 +-
>  drivers/pci/host/Kconfig                           |   2 +-
>  drivers/pci/host/pcie-xilinx.c                     | 125 ++++++-----
>  drivers/ptp/Kconfig                                |   2 +-
>  35 files changed, 1649 insertions(+), 292 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/ascii-lcd.txt
>  create mode 100644 Documentation/devicetree/bindings/mips/img/boston.txt
>  create mode 100644 arch/mips/boot/dts/img/Makefile
>  create mode 100644 arch/mips/boot/dts/img/boston.dts
>  create mode 100644 arch/mips/boot/skeleton.its
>  create mode 100644 arch/mips/boston/Makefile
>  create mode 100644 arch/mips/boston/Platform
>  create mode 100644 arch/mips/boston/init.c
>  create mode 100644 arch/mips/boston/int.c
>  create mode 100644 arch/mips/boston/time.c
>  create mode 100644 arch/mips/boston/vmlinux.its
>  create mode 100644 arch/mips/configs/boston_defconfig
>  create mode 100644 arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
>  create mode 100644 arch/mips/include/asm/mach-boston/irq.h
>  create mode 100644 arch/mips/include/asm/mach-boston/spaces.h
>  create mode 100644 arch/mips/pci/pci-generic.c
>  create mode 100644 arch/mips/pci/pci-legacy.c
>  create mode 100644 drivers/auxdisplay/ascii-lcd.c
> 

These patches are targeting different subsystems and should go to the
tree via different maintainers that's why please split them to sensible
pieces and send them separately.
For pcie-xilinx.c changes please add to CC Bharat Kumar Gogada
<bharatku@xilinx.com> and Ravikiran Gummaluri <rgummal@xilinx.com>.
They have patches for pcie-xilinx and I expect there will be some sort
of collision.

Thanks,
Michal

Re: [PATCH v2 00/15] MIPS Boston board support

[Paul Burton]

On Wed, Feb 03, 2016 at 01:35:26PM +0100, Michal Simek wrote:
> On 3.2.2016 12:30, Paul Burton wrote:
> > This series introduces support for the Imagination Technologies MIPS
> > Boston development board. Boston is an FPGA-based development board
> > akin to the much older Malta board, built around a Xilinx FPGA running
> > a MIPS CPU & other logic including a PCIe root port connected to an
> > Intel EG20T Platform Controller Hub. This provides a base set of
> > peripherals including SATA, USB, SD/MMC, ethernet, I2C & GPIOs. PCIe
> > slots are also present for expansion.
> > 
> > v2 of this series splits out the pch_gbe ethernet driver changes to a
> > separate series, but keeps the Xilinx PCIe driver changes since PCIe is
> > so central to the Boston board & the series has shrunk somewhat since
> > its earlier submission.
> > 
> > Applies atop v4.5-rc2.
> > 
> > Paul Burton (15):
> >   dt-bindings: ascii-lcd: Document a binding for simple ASCII LCDs
> >   auxdisplay: driver for simple memory mapped ASCII LCD displays
> >   MIPS: PCI: Compatibility with ARM-like PCI host drivers
> >   PCI: xilinx: Keep references to both IRQ domains
> >   PCI: xilinx: Unify INTx & MSI interrupt FIFO decode
> >   PCI: xilinx: Always clear interrupt decode register
> >   PCI: xilinx: Clear interrupt FIFO during probe
> >   PCI: xilinx: Fix INTX irq dispatch
> >   PCI: xilinx: Allow build on MIPS platforms
> >   misc: pch_phub: Allow build on MIPS platforms
> >   dmaengine: pch_dma: Allow build on MIPS platforms
> >   ptp: pch: Allow build on MIPS platforms
> >   MIPS: Support for generating FIT (.itb) images
> >   dt-bindings: mips: img,boston: Document img,boston binding
> >   MIPS: Boston board support
> > 
> >  Documentation/devicetree/bindings/ascii-lcd.txt    |  10 +
> >  .../devicetree/bindings/mips/img/boston.txt        |  15 ++
> >  MAINTAINERS                                        |  14 ++
> >  arch/mips/Kbuild.platforms                         |   1 +
> >  arch/mips/Kconfig                                  |  48 +++++
> >  arch/mips/Makefile                                 |   6 +-
> >  arch/mips/boot/Makefile                            |  61 ++++++
> >  arch/mips/boot/dts/Makefile                        |   1 +
> >  arch/mips/boot/dts/img/Makefile                    |   7 +
> >  arch/mips/boot/dts/img/boston.dts                  | 204 ++++++++++++++++++
> >  arch/mips/boot/skeleton.its                        |  24 +++
> >  arch/mips/boston/Makefile                          |  12 ++
> >  arch/mips/boston/Platform                          |   8 +
> >  arch/mips/boston/init.c                            | 106 ++++++++++
> >  arch/mips/boston/int.c                             |  33 +++
> >  arch/mips/boston/time.c                            |  89 ++++++++
> >  arch/mips/boston/vmlinux.its                       |  23 ++
> >  arch/mips/configs/boston_defconfig                 | 173 +++++++++++++++
> >  .../asm/mach-boston/cpu-feature-overrides.h        |  26 +++
> >  arch/mips/include/asm/mach-boston/irq.h            |  18 ++
> >  arch/mips/include/asm/mach-boston/spaces.h         |  20 ++
> >  arch/mips/include/asm/pci.h                        |  67 +++++-
> >  arch/mips/lib/iomap-pci.c                          |   2 +-
> >  arch/mips/pci/Makefile                             |   6 +
> >  arch/mips/pci/pci-generic.c                        | 138 ++++++++++++
> >  arch/mips/pci/pci-legacy.c                         | 232 +++++++++++++++++++++
> >  arch/mips/pci/pci.c                                | 226 +-------------------
> >  drivers/auxdisplay/Kconfig                         |   7 +
> >  drivers/auxdisplay/Makefile                        |   1 +
> >  drivers/auxdisplay/ascii-lcd.c                     | 230 ++++++++++++++++++++
> >  drivers/dma/Kconfig                                |   2 +-
> >  drivers/misc/Kconfig                               |   2 +-
> >  drivers/pci/host/Kconfig                           |   2 +-
> >  drivers/pci/host/pcie-xilinx.c                     | 125 ++++++-----
> >  drivers/ptp/Kconfig                                |   2 +-
> >  35 files changed, 1649 insertions(+), 292 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/ascii-lcd.txt
> >  create mode 100644 Documentation/devicetree/bindings/mips/img/boston.txt
> >  create mode 100644 arch/mips/boot/dts/img/Makefile
> >  create mode 100644 arch/mips/boot/dts/img/boston.dts
> >  create mode 100644 arch/mips/boot/skeleton.its
> >  create mode 100644 arch/mips/boston/Makefile
> >  create mode 100644 arch/mips/boston/Platform
> >  create mode 100644 arch/mips/boston/init.c
> >  create mode 100644 arch/mips/boston/int.c
> >  create mode 100644 arch/mips/boston/time.c
> >  create mode 100644 arch/mips/boston/vmlinux.its
> >  create mode 100644 arch/mips/configs/boston_defconfig
> >  create mode 100644 arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
> >  create mode 100644 arch/mips/include/asm/mach-boston/irq.h
> >  create mode 100644 arch/mips/include/asm/mach-boston/spaces.h
> >  create mode 100644 arch/mips/pci/pci-generic.c
> >  create mode 100644 arch/mips/pci/pci-legacy.c
> >  create mode 100644 drivers/auxdisplay/ascii-lcd.c
> > 
> 

Hi Michal,

On Wed, Feb 03, 2016 at 01:35:26PM +0100, Michal Simek wrote:
> These patches are targeting different subsystems and should go to the
> tree via different maintainers

Not necessarily, for example the dmaengine & ptp patches both received
acks last time they were posted - presumably with the intent that Ralf
can merge them through the MIPS tree.

On Wed, Feb 03, 2016 at 01:35:26PM +0100, Michal Simek wrote:
> that's why please split them to sensible pieces and send them separately.

I could split out the Xilinx PCIe changes if it's insisted upon, but:

  - They are the motivation for what's probably the largest of the MIPS
    patches, so it's good to see those changes in context.

  - The Boston board is very heavily PCIe based, with all peripherals
    apart from a single UART & an 8 character LCD display being accessed
    via PCIe. Thus Boston is pretty useless without the Xilinx PCIe
    driver.

  - Each patch is only CC'd to people who should be relevant to it
    anyway (using the patman tool), so it's not like the MIPS changes
    are spamming people only interested in PCI.

  - 15 patches really isn't all that many.

So I think there is value in keeping the remainder of this series
together. I already split out the fairly standalone ethernet driver
changes. I certainly think saying this approach isn't sensible is a
stretch.

> For pcie-xilinx.c changes please add to CC Bharat Kumar Gogada
> <bharatku@xilinx.com> and Ravikiran Gummaluri <rgummal@xilinx.com>.
> They have patches for pcie-xilinx and I expect there will be some sort
> of collision.

I'll CC them if there's another revision, but if they should be CC'd for
changes to this driver is there a reason they're not in MAINTAINERS?
That would lead to tools like patman automatically CC'ing them, which
makes tons more sense than people needing to be informed after
submitting patches that they should CC some random extra email
addresses.

Thanks,
    Paul

> Thanks,
> Michal
> 
> 

Re: [PATCH v2 00/15] MIPS Boston board support

[Michal Simek]

Hi Paul,

On 3.2.2016 17:03, Paul Burton wrote:
> On Wed, Feb 03, 2016 at 01:35:26PM +0100, Michal Simek wrote:
>> On 3.2.2016 12:30, Paul Burton wrote:
>>> This series introduces support for the Imagination Technologies MIPS
>>> Boston development board. Boston is an FPGA-based development board
>>> akin to the much older Malta board, built around a Xilinx FPGA running
>>> a MIPS CPU & other logic including a PCIe root port connected to an
>>> Intel EG20T Platform Controller Hub. This provides a base set of
>>> peripherals including SATA, USB, SD/MMC, ethernet, I2C & GPIOs. PCIe
>>> slots are also present for expansion.
>>>
>>> v2 of this series splits out the pch_gbe ethernet driver changes to a
>>> separate series, but keeps the Xilinx PCIe driver changes since PCIe is
>>> so central to the Boston board & the series has shrunk somewhat since
>>> its earlier submission.
>>>
>>> Applies atop v4.5-rc2.
>>>
>>> Paul Burton (15):
>>>   dt-bindings: ascii-lcd: Document a binding for simple ASCII LCDs
>>>   auxdisplay: driver for simple memory mapped ASCII LCD displays
>>>   MIPS: PCI: Compatibility with ARM-like PCI host drivers
>>>   PCI: xilinx: Keep references to both IRQ domains
>>>   PCI: xilinx: Unify INTx & MSI interrupt FIFO decode
>>>   PCI: xilinx: Always clear interrupt decode register
>>>   PCI: xilinx: Clear interrupt FIFO during probe
>>>   PCI: xilinx: Fix INTX irq dispatch
>>>   PCI: xilinx: Allow build on MIPS platforms
>>>   misc: pch_phub: Allow build on MIPS platforms
>>>   dmaengine: pch_dma: Allow build on MIPS platforms
>>>   ptp: pch: Allow build on MIPS platforms
>>>   MIPS: Support for generating FIT (.itb) images
>>>   dt-bindings: mips: img,boston: Document img,boston binding
>>>   MIPS: Boston board support
>>>
>>>  Documentation/devicetree/bindings/ascii-lcd.txt    |  10 +
>>>  .../devicetree/bindings/mips/img/boston.txt        |  15 ++
>>>  MAINTAINERS                                        |  14 ++
>>>  arch/mips/Kbuild.platforms                         |   1 +
>>>  arch/mips/Kconfig                                  |  48 +++++
>>>  arch/mips/Makefile                                 |   6 +-
>>>  arch/mips/boot/Makefile                            |  61 ++++++
>>>  arch/mips/boot/dts/Makefile                        |   1 +
>>>  arch/mips/boot/dts/img/Makefile                    |   7 +
>>>  arch/mips/boot/dts/img/boston.dts                  | 204 ++++++++++++++++++
>>>  arch/mips/boot/skeleton.its                        |  24 +++
>>>  arch/mips/boston/Makefile                          |  12 ++
>>>  arch/mips/boston/Platform                          |   8 +
>>>  arch/mips/boston/init.c                            | 106 ++++++++++
>>>  arch/mips/boston/int.c                             |  33 +++
>>>  arch/mips/boston/time.c                            |  89 ++++++++
>>>  arch/mips/boston/vmlinux.its                       |  23 ++
>>>  arch/mips/configs/boston_defconfig                 | 173 +++++++++++++++
>>>  .../asm/mach-boston/cpu-feature-overrides.h        |  26 +++
>>>  arch/mips/include/asm/mach-boston/irq.h            |  18 ++
>>>  arch/mips/include/asm/mach-boston/spaces.h         |  20 ++
>>>  arch/mips/include/asm/pci.h                        |  67 +++++-
>>>  arch/mips/lib/iomap-pci.c                          |   2 +-
>>>  arch/mips/pci/Makefile                             |   6 +
>>>  arch/mips/pci/pci-generic.c                        | 138 ++++++++++++
>>>  arch/mips/pci/pci-legacy.c                         | 232 +++++++++++++++++++++
>>>  arch/mips/pci/pci.c                                | 226 +-------------------
>>>  drivers/auxdisplay/Kconfig                         |   7 +
>>>  drivers/auxdisplay/Makefile                        |   1 +
>>>  drivers/auxdisplay/ascii-lcd.c                     | 230 ++++++++++++++++++++
>>>  drivers/dma/Kconfig                                |   2 +-
>>>  drivers/misc/Kconfig                               |   2 +-
>>>  drivers/pci/host/Kconfig                           |   2 +-
>>>  drivers/pci/host/pcie-xilinx.c                     | 125 ++++++-----
>>>  drivers/ptp/Kconfig                                |   2 +-
>>>  35 files changed, 1649 insertions(+), 292 deletions(-)
>>>  create mode 100644 Documentation/devicetree/bindings/ascii-lcd.txt
>>>  create mode 100644 Documentation/devicetree/bindings/mips/img/boston.txt
>>>  create mode 100644 arch/mips/boot/dts/img/Makefile
>>>  create mode 100644 arch/mips/boot/dts/img/boston.dts
>>>  create mode 100644 arch/mips/boot/skeleton.its
>>>  create mode 100644 arch/mips/boston/Makefile
>>>  create mode 100644 arch/mips/boston/Platform
>>>  create mode 100644 arch/mips/boston/init.c
>>>  create mode 100644 arch/mips/boston/int.c
>>>  create mode 100644 arch/mips/boston/time.c
>>>  create mode 100644 arch/mips/boston/vmlinux.its
>>>  create mode 100644 arch/mips/configs/boston_defconfig
>>>  create mode 100644 arch/mips/include/asm/mach-boston/cpu-feature-overrides.h
>>>  create mode 100644 arch/mips/include/asm/mach-boston/irq.h
>>>  create mode 100644 arch/mips/include/asm/mach-boston/spaces.h
>>>  create mode 100644 arch/mips/pci/pci-generic.c
>>>  create mode 100644 arch/mips/pci/pci-legacy.c
>>>  create mode 100644 drivers/auxdisplay/ascii-lcd.c
>>>
>>
> 
> Hi Michal,
> 
> On Wed, Feb 03, 2016 at 01:35:26PM +0100, Michal Simek wrote:
>> These patches are targeting different subsystems and should go to the
>> tree via different maintainers
> 
> Not necessarily, for example the dmaengine & ptp patches both received
> acks last time they were posted - presumably with the intent that Ralf
> can merge them through the MIPS tree.

I don't know if Ralf can do that or not but patches should go via
appropriate maintainer.


> On Wed, Feb 03, 2016 at 01:35:26PM +0100, Michal Simek wrote:
>> that's why please split them to sensible pieces and send them separately.
> 
> I could split out the Xilinx PCIe changes if it's insisted upon, but:
> 
>   - They are the motivation for what's probably the largest of the MIPS
>     patches, so it's good to see those changes in context.
> 
>   - The Boston board is very heavily PCIe based, with all peripherals
>     apart from a single UART & an 8 character LCD display being accessed
>     via PCIe. Thus Boston is pretty useless without the Xilinx PCIe
>     driver.
> 
>   - Each patch is only CC'd to people who should be relevant to it
>     anyway (using the patman tool), so it's not like the MIPS changes
>     are spamming people only interested in PCI.
> 
>   - 15 patches really isn't all that many.
> 
> So I think there is value in keeping the remainder of this series
> together. I already split out the fairly standalone ethernet driver
> changes. I certainly think saying this approach isn't sensible is a
> stretch.
> 
>> For pcie-xilinx.c changes please add to CC Bharat Kumar Gogada
>> <bharatku@xilinx.com> and Ravikiran Gummaluri <rgummal@xilinx.com>.
>> They have patches for pcie-xilinx and I expect there will be some sort
>> of collision.
> 
> I'll CC them if there's another revision, but if they should be CC'd for
> changes to this driver is there a reason they're not in MAINTAINERS?
> That would lead to tools like patman automatically CC'ing them, which
> makes tons more sense than people needing to be informed after
> submitting patches that they should CC some random extra email
> addresses.

I am just telling you there are other guys who are affected by your
patches and politely asking you to add them to CC.
Because your patches are in conflict with their patches. It doesn't mean
that these guys have to be listed in MAINTAINERS.

Thanks,
Michal

Re: [PATCH v2 01/15] dt-bindings: ascii-lcd: Document a binding for simple ASCII LCDs

[Rob Herring]

On Wed, Feb 03, 2016 at 11:30:31AM +0000, Paul Burton wrote:
> Add documentation for a devicetree binding for simple memory-mapped
> ASCII LCD displays, such as those found on the Imagination Technologies
> Boston & Malta development boards.
> 
> Signed-off-by: Paul Burton <paul.burton@imgtec.com>
> ---
> 
> Changes in v2: None
> 
>  Documentation/devicetree/bindings/ascii-lcd.txt | 10 ++++++++++

Given this is specific to some IT block, then it should not have a 
generic name. Otherwise, the binding looks fine.

Rob

Re: [PATCH v2 14/15] dt-bindings: mips: img,boston: Document img,boston binding

[Rob Herring]

On Wed, Feb 03, 2016 at 11:30:44AM +0000, Paul Burton wrote:
> Add documentation for the simple img,boston devicetree binding & the
> boot protocol used to pass the devicetree to the kernel.
> 
> Signed-off-by: Paul Burton <paul.burton-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
> ---
> 
> Changes in v2: None
> 
>  Documentation/devicetree/bindings/mips/img/boston.txt | 15 +++++++++++++++
>  MAINTAINERS                                           |  5 +++++
>  2 files changed, 20 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mips/img/boston.txt

Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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