[GIT PULL] Second Round of Renesas ARM Based SoC Drivers Updates for v4.10

[GIT PULL] Second Round of Renesas ARM Based SoC Drivers Updates for v4.10

[Simon Horman]

Hi Olof, Hi Kevin, Hi Arnd,

Please consider these second round of Renesas ARM based SoC drivers updates for v4.10.

This pull request is based on a merge of:

* The previous round of such requests, tagged as renesas-drivers-for-v4.10,
  which you have already pulled.
* The soc-device-match-tag1 tag of Geert Uytterhoeven's renesas-driver's tree.
  This is included to provide core soc_device_match() infrastructure which
  is a dependency of identifying SoC and registering with SoC bus.


The following changes since commit 437c4eeb0bd4c1d68817be997716f52b8c22a9c3:

  Merge tag 'soc-device-match-tag1' of https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into HEAD (2016-11-15 14:12:57 +0100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git tags/renesas-drivers2-for-v4.10

for you to fetch changes up to 63ee9e2ba47dbdb42156c9b940515cfd49e78c91:

  soc: renesas: Identify SoC and register with the SoC bus (2016-11-17 14:37:20 +0100)

----------------------------------------------------------------
Second Round of Renesas ARM Based SoC Drivers Updates for v4.10

* Identify SoC and register with the SoC bus
* Add support for the r8a7745 SoC to rcar-sysc

----------------------------------------------------------------
Geert Uytterhoeven (2):
      ARM: shmobile: Document DT bindings for Product Register
      soc: renesas: Identify SoC and register with the SoC bus

Sergei Shtylyov (2):
      ARM: shmobile: r8a7745: add power domain index macros
      soc: renesas: rcar-sysc: add R8A7745 support

 Documentation/devicetree/bindings/arm/shmobile.txt |  18 ++
 .../bindings/power/renesas,rcar-sysc.txt           |   1 +
 arch/arm/mach-shmobile/Kconfig                     |   1 +
 arch/arm64/Kconfig.platforms                       |   1 +
 drivers/soc/renesas/Makefile                       |   3 +
 drivers/soc/renesas/r8a7745-sysc.c                 |  32 +++
 drivers/soc/renesas/rcar-sysc.c                    |   3 +
 drivers/soc/renesas/rcar-sysc.h                    |   1 +
 drivers/soc/renesas/renesas-soc.c                  | 257 +++++++++++++++++++++
 include/dt-bindings/power/r8a7745-sysc.h           |  25 ++
 10 files changed, 342 insertions(+)
 create mode 100644 drivers/soc/renesas/r8a7745-sysc.c
 create mode 100644 drivers/soc/renesas/renesas-soc.c
 create mode 100644 include/dt-bindings/power/r8a7745-sysc.h

[PATCH 1/4] ARM: shmobile: r8a7745: add power domain index macros

[Simon Horman]

From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Add macros usable by the device tree sources to reference R8A7745 SYSC power
domains by index.

Based on the original (and large) patch by Dmitry Shifrin
<dmitry.shifrin@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 include/dt-bindings/power/r8a7745-sysc.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 include/dt-bindings/power/r8a7745-sysc.h

diff --git a/include/dt-bindings/power/r8a7745-sysc.h b/include/dt-bindings/power/r8a7745-sysc.h
new file mode 100644
index 000000000000..1844c1171c04
--- /dev/null
+++ b/include/dt-bindings/power/r8a7745-sysc.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2016 Cogent Embedded Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __DT_BINDINGS_POWER_R8A7745_SYSC_H__
+#define __DT_BINDINGS_POWER_R8A7745_SYSC_H__
+
+/*
+ * These power domain indices match the numbers of the interrupt bits
+ * representing the power areas in the various Interrupt Registers
+ * (e.g. SYSCISR, Interrupt Status Register)
+ */
+
+#define R8A7745_PD_CA7_CPU0		 5
+#define R8A7745_PD_CA7_CPU1		 6
+#define R8A7745_PD_SGX			20
+#define R8A7745_PD_CA7_SCU		21
+
+/* Always-on power area */
+#define R8A7745_PD_ALWAYS_ON		32
+
+#endif /* __DT_BINDINGS_POWER_R8A7745_SYSC_H__ */
-- 
2.7.0.rc3.207.g0ac5344

[PATCH 2/4] soc: renesas: rcar-sysc: add R8A7745 support

[Simon Horman]

From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Add support for RZ/G1E (R8A7745) SoC power areas to the R-Car SYSC driver.

Based on the original (and large) patch by Dmitry Shifrin
<dmitry.shifrin@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 .../bindings/power/renesas,rcar-sysc.txt           |  1 +
 drivers/soc/renesas/Makefile                       |  1 +
 drivers/soc/renesas/r8a7745-sysc.c                 | 32 ++++++++++++++++++++++
 drivers/soc/renesas/rcar-sysc.c                    |  3 ++
 drivers/soc/renesas/rcar-sysc.h                    |  1 +
 5 files changed, 38 insertions(+)
 create mode 100644 drivers/soc/renesas/r8a7745-sysc.c

diff --git a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
index c16ec1866ac4..d91715bc8d52 100644
--- a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
+++ b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
@@ -8,6 +8,7 @@ and various coprocessors.
 Required properties:
   - compatible: Must contain exactly one of the following:
       - "renesas,r8a7743-sysc" (RZ/G1M)
+      - "renesas,r8a7745-sysc" (RZ/G1E)
       - "renesas,r8a7779-sysc" (R-Car H1)
       - "renesas,r8a7790-sysc" (R-Car H2)
       - "renesas,r8a7791-sysc" (R-Car M2-W)
diff --git a/drivers/soc/renesas/Makefile b/drivers/soc/renesas/Makefile
index 9e0bb329594c..e2249f01b2de 100644
--- a/drivers/soc/renesas/Makefile
+++ b/drivers/soc/renesas/Makefile
@@ -1,4 +1,5 @@
 obj-$(CONFIG_ARCH_R8A7743)	+= rcar-sysc.o r8a7743-sysc.o
+obj-$(CONFIG_ARCH_R8A7745)	+= rcar-sysc.o r8a7745-sysc.o
 obj-$(CONFIG_ARCH_R8A7779)	+= rcar-sysc.o r8a7779-sysc.o
 obj-$(CONFIG_ARCH_R8A7790)	+= rcar-sysc.o r8a7790-sysc.o
 obj-$(CONFIG_ARCH_R8A7791)	+= rcar-sysc.o r8a7791-sysc.o
diff --git a/drivers/soc/renesas/r8a7745-sysc.c b/drivers/soc/renesas/r8a7745-sysc.c
new file mode 100644
index 000000000000..d17887c08aa1
--- /dev/null
+++ b/drivers/soc/renesas/r8a7745-sysc.c
@@ -0,0 +1,32 @@
+/*
+ * Renesas RZ/G1E System Controller
+ *
+ * Copyright (C) 2016 Cogent Embedded Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation; of the License.
+ */
+
+#include <linux/bug.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/power/r8a7745-sysc.h>
+
+#include "rcar-sysc.h"
+
+static const struct rcar_sysc_area r8a7745_areas[] __initconst = {
+	{ "always-on",	    0, 0, R8A7745_PD_ALWAYS_ON,	-1, PD_ALWAYS_ON },
+	{ "ca7-scu",	0x100, 0, R8A7745_PD_CA7_SCU,	R8A7745_PD_ALWAYS_ON,
+	  PD_SCU },
+	{ "ca7-cpu0",	0x1c0, 0, R8A7745_PD_CA7_CPU0,	R8A7745_PD_CA7_SCU,
+	  PD_CPU_NOCR },
+	{ "ca7-cpu1",	0x1c0, 1, R8A7745_PD_CA7_CPU1,	R8A7745_PD_CA7_SCU,
+	  PD_CPU_NOCR },
+	{ "sgx",	 0xc0, 0, R8A7745_PD_SGX,	R8A7745_PD_ALWAYS_ON },
+};
+
+const struct rcar_sysc_info r8a7745_sysc_info __initconst = {
+	.areas = r8a7745_areas,
+	.num_areas = ARRAY_SIZE(r8a7745_areas),
+};
diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c
index 71acd45b13f0..225c35c79d9a 100644
--- a/drivers/soc/renesas/rcar-sysc.c
+++ b/drivers/soc/renesas/rcar-sysc.c
@@ -278,6 +278,9 @@ static const struct of_device_id rcar_sysc_matches[] = {
 #ifdef CONFIG_ARCH_R8A7743
 	{ .compatible = "renesas,r8a7743-sysc", .data = &r8a7743_sysc_info },
 #endif
+#ifdef CONFIG_ARCH_R8A7745
+	{ .compatible = "renesas,r8a7745-sysc", .data = &r8a7745_sysc_info },
+#endif
 #ifdef CONFIG_ARCH_R8A7779
 	{ .compatible = "renesas,r8a7779-sysc", .data = &r8a7779_sysc_info },
 #endif
diff --git a/drivers/soc/renesas/rcar-sysc.h b/drivers/soc/renesas/rcar-sysc.h
index 8ab9ca8a825a..f6e842e2976e 100644
--- a/drivers/soc/renesas/rcar-sysc.h
+++ b/drivers/soc/renesas/rcar-sysc.h
@@ -51,6 +51,7 @@ struct rcar_sysc_info {
 };
 
 extern const struct rcar_sysc_info r8a7743_sysc_info;
+extern const struct rcar_sysc_info r8a7745_sysc_info;
 extern const struct rcar_sysc_info r8a7779_sysc_info;
 extern const struct rcar_sysc_info r8a7790_sysc_info;
 extern const struct rcar_sysc_info r8a7791_sysc_info;
-- 
2.7.0.rc3.207.g0ac5344

[PATCH 3/4] ARM: shmobile: Document DT bindings for Product Register

[Simon Horman]

From: Geert Uytterhoeven <geert+renesas@glider.be>

Add device tree binding documentation for the Product Register (PRR),
which provides product and revision information on most Renesas ARM
SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 Documentation/devicetree/bindings/arm/shmobile.txt | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt
index 2f0b7169f132..23c77315fdac 100644
--- a/Documentation/devicetree/bindings/arm/shmobile.txt
+++ b/Documentation/devicetree/bindings/arm/shmobile.txt
@@ -75,3 +75,21 @@ Boards:
     compatible = "renesas,silk", "renesas,r8a7794"
   - Wheat
     compatible = "renesas,wheat", "renesas,r8a7792"
+
+
+Most Renesas ARM SoCs have a Product Register that allows to retrieve SoC
+product and revision information.  If present, a device node for this register
+should be added.
+
+Required properties:
+  - compatible: Must be "renesas,prr".
+  - reg: Base address and length of the register block.
+
+
+Examples
+--------
+
+	prr: chipid at ff000044 {
+		compatible = "renesas,prr";
+		reg = <0 0xff000044 0 4>;
+	};
-- 
2.7.0.rc3.207.g0ac5344

[PATCH 4/4] soc: renesas: Identify SoC and register with the SoC bus

[Simon Horman]

From: Geert Uytterhoeven <geert+renesas@glider.be>

Identify the SoC type and revision, and register this information with
the SoC bus, so it is available under /sys/devices/soc0/, and can be
checked where needed using soc_device_match().

Identification is done using the Product Register or Common Chip Code
Register, as declared in DT (PRR only for now), or using a hardcoded
fallback if missing.

Example:

    Detected Renesas R-Car Gen2 r8a7791 ES1.0
    ...
    # cat /sys/devices/soc0/{machine,family,soc_id,revision}
    Koelsch
    R-Car Gen2
    r8a7791
    ES1.0

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/Kconfig    |   1 +
 arch/arm64/Kconfig.platforms      |   1 +
 drivers/soc/renesas/Makefile      |   2 +
 drivers/soc/renesas/renesas-soc.c | 257 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 261 insertions(+)
 create mode 100644 drivers/soc/renesas/renesas-soc.c

diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 09817bae4558..ebab13e8afa1 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -40,6 +40,7 @@ menuconfig ARCH_RENESAS
 	select ARCH_DMA_ADDR_T_64BIT if ARM_LPAE
 	select NO_IOPORT_MAP
 	select PINCTRL
+	select SOC_BUS
 	select GPIOLIB
 	select ZONE_DMA if ARM_LPAE
 
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index cfbdf02ef566..72f4eac5cbbc 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -143,6 +143,7 @@ config ARCH_RENESAS
 	select PM
 	select PM_GENERIC_DOMAINS
 	select RENESAS_IRQC
+	select SOC_BUS
 	help
 	  This enables support for the ARMv8 based Renesas SoCs.
 
diff --git a/drivers/soc/renesas/Makefile b/drivers/soc/renesas/Makefile
index e2249f01b2de..91c42b34705f 100644
--- a/drivers/soc/renesas/Makefile
+++ b/drivers/soc/renesas/Makefile
@@ -1,3 +1,5 @@
+obj-$(CONFIG_SOC_BUS)		+= renesas-soc.o
+
 obj-$(CONFIG_ARCH_R8A7743)	+= rcar-sysc.o r8a7743-sysc.o
 obj-$(CONFIG_ARCH_R8A7745)	+= rcar-sysc.o r8a7745-sysc.o
 obj-$(CONFIG_ARCH_R8A7779)	+= rcar-sysc.o r8a7779-sysc.o
diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c
new file mode 100644
index 000000000000..330960312296
--- /dev/null
+++ b/drivers/soc/renesas/renesas-soc.c
@@ -0,0 +1,257 @@
+/*
+ * Renesas SoC Identification
+ *
+ * Copyright (C) 2014-2016 Glider bvba
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/sys_soc.h>
+
+
+struct renesas_family {
+	const char name[16];
+	u32 reg;			/* CCCR or PRR, if not in DT */
+};
+
+static const struct renesas_family fam_rcar_gen1 __initconst __maybe_unused = {
+	.name	= "R-Car Gen1",
+	.reg	= 0xff000044,		/* PRR (Product Register) */
+};
+
+static const struct renesas_family fam_rcar_gen2 __initconst __maybe_unused = {
+	.name	= "R-Car Gen2",
+	.reg	= 0xff000044,		/* PRR (Product Register) */
+};
+
+static const struct renesas_family fam_rcar_gen3 __initconst __maybe_unused = {
+	.name	= "R-Car Gen3",
+	.reg	= 0xfff00044,		/* PRR (Product Register) */
+};
+
+static const struct renesas_family fam_rmobile __initconst __maybe_unused = {
+	.name	= "R-Mobile",
+	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
+};
+
+static const struct renesas_family fam_rza __initconst __maybe_unused = {
+	.name	= "RZ/A",
+};
+
+static const struct renesas_family fam_rzg __initconst __maybe_unused = {
+	.name	= "RZ/G",
+	.reg	= 0xff000044,		/* PRR (Product Register) */
+};
+
+static const struct renesas_family fam_shmobile __initconst __maybe_unused = {
+	.name	= "SH-Mobile",
+	.reg	= 0xe600101c,		/* CCCR (Common Chip Code Register) */
+};
+
+
+struct renesas_soc {
+	const struct renesas_family *family;
+	u8 id;
+};
+
+static const struct renesas_soc soc_rz_a1h __initconst __maybe_unused = {
+	.family	= &fam_rza,
+};
+
+static const struct renesas_soc soc_rmobile_ape6 __initconst __maybe_unused = {
+	.family	= &fam_rmobile,
+	.id	= 0x3f,
+};
+
+static const struct renesas_soc soc_rmobile_a1 __initconst __maybe_unused = {
+	.family	= &fam_rmobile,
+	.id	= 0x40,
+};
+
+static const struct renesas_soc soc_rz_g1m __initconst __maybe_unused = {
+	.family	= &fam_rzg,
+	.id	= 0x47,
+};
+
+static const struct renesas_soc soc_rz_g1e __initconst __maybe_unused = {
+	.family	= &fam_rzg,
+	.id	= 0x4c,
+};
+
+static const struct renesas_soc soc_rcar_m1a __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen1,
+};
+
+static const struct renesas_soc soc_rcar_h1 __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen1,
+	.id	= 0x3b,
+};
+
+static const struct renesas_soc soc_rcar_h2 __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen2,
+	.id	= 0x45,
+};
+
+static const struct renesas_soc soc_rcar_m2_w __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen2,
+	.id	= 0x47,
+};
+
+static const struct renesas_soc soc_rcar_v2h __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen2,
+	.id	= 0x4a,
+};
+
+static const struct renesas_soc soc_rcar_m2_n __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen2,
+	.id	= 0x4b,
+};
+
+static const struct renesas_soc soc_rcar_e2 __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen2,
+	.id	= 0x4c,
+};
+
+static const struct renesas_soc soc_rcar_h3 __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen3,
+	.id	= 0x4f,
+};
+
+static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen3,
+	.id	= 0x52,
+};
+
+static const struct renesas_soc soc_shmobile_ag5 __initconst __maybe_unused = {
+	.family	= &fam_shmobile,
+	.id	= 0x37,
+};
+
+
+static const struct of_device_id renesas_socs[] __initconst = {
+#ifdef CONFIG_ARCH_R7S72100
+	{ .compatible = "renesas,r7s72100",	.data = &soc_rz_a1h },
+#endif
+#ifdef CONFIG_ARCH_R8A73A4
+	{ .compatible = "renesas,r8a73a4",	.data = &soc_rmobile_ape6 },
+#endif
+#ifdef CONFIG_ARCH_R8A7740
+	{ .compatible = "renesas,r8a7740",	.data = &soc_rmobile_a1 },
+#endif
+#ifdef CONFIG_ARCH_R8A7743
+	{ .compatible = "renesas,r8a7743",	.data = &soc_rz_g1m },
+#endif
+#ifdef CONFIG_ARCH_R8A7745
+	{ .compatible = "renesas,r8a7745",	.data = &soc_rz_g1e },
+#endif
+#ifdef CONFIG_ARCH_R8A7778
+	{ .compatible = "renesas,r8a7778",	.data = &soc_rcar_m1a },
+#endif
+#ifdef CONFIG_ARCH_R8A7779
+	{ .compatible = "renesas,r8a7779",	.data = &soc_rcar_h1 },
+#endif
+#ifdef CONFIG_ARCH_R8A7790
+	{ .compatible = "renesas,r8a7790",	.data = &soc_rcar_h2 },
+#endif
+#ifdef CONFIG_ARCH_R8A7791
+	{ .compatible = "renesas,r8a7791",	.data = &soc_rcar_m2_w },
+#endif
+#ifdef CONFIG_ARCH_R8A7792
+	{ .compatible = "renesas,r8a7792",	.data = &soc_rcar_v2h },
+#endif
+#ifdef CONFIG_ARCH_R8A7793
+	{ .compatible = "renesas,r8a7793",	.data = &soc_rcar_m2_n },
+#endif
+#ifdef CONFIG_ARCH_R8A7794
+	{ .compatible = "renesas,r8a7794",	.data = &soc_rcar_e2 },
+#endif
+#ifdef CONFIG_ARCH_R8A7795
+	{ .compatible = "renesas,r8a7795",	.data = &soc_rcar_h3 },
+#endif
+#ifdef CONFIG_ARCH_R8A7796
+	{ .compatible = "renesas,r8a7796",	.data = &soc_rcar_m3_w },
+#endif
+#ifdef CONFIG_ARCH_SH73A0
+	{ .compatible = "renesas,sh73a0",	.data = &soc_shmobile_ag5 },
+#endif
+	{ /* sentinel */ }
+};
+
+static int __init renesas_soc_init(void)
+{
+	struct soc_device_attribute *soc_dev_attr;
+	const struct renesas_family *family;
+	const struct of_device_id *match;
+	const struct renesas_soc *soc;
+	void __iomem *chipid = NULL;
+	struct soc_device *soc_dev;
+	struct device_node *np;
+	unsigned int product;
+
+	match = of_match_node(renesas_socs, of_root);
+	if (!match)
+		return -ENODEV;
+
+	soc = match->data;
+	family = soc->family;
+
+	/* Try PRR first, then hardcoded fallback */
+	np = of_find_compatible_node(NULL, NULL, "renesas,prr");
+	if (np) {
+		chipid = of_iomap(np, 0);
+		of_node_put(np);
+	} else if (soc->id) {
+		chipid = ioremap(family->reg, 4);
+	}
+	if (chipid) {
+		product = readl(chipid);
+		iounmap(chipid);
+		if (soc->id && ((product >> 8) & 0xff) != soc->id) {
+			pr_warn("SoC mismatch (product = 0x%x)\n", product);
+			return -ENODEV;
+		}
+	}
+
+	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+	if (!soc_dev_attr)
+		return -ENOMEM;
+
+	np = of_find_node_by_path("/");
+	of_property_read_string(np, "model", &soc_dev_attr->machine);
+	of_node_put(np);
+
+	soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
+	soc_dev_attr->soc_id = kstrdup_const(strchr(match->compatible, ',') + 1,
+					     GFP_KERNEL);
+	if (chipid)
+		soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
+						   ((product >> 4) & 0x0f) + 1,
+						   product & 0xf);
+
+	pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
+		soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");
+
+	soc_dev = soc_device_register(soc_dev_attr);
+	if (IS_ERR(soc_dev)) {
+		kfree(soc_dev_attr->revision);
+		kfree_const(soc_dev_attr->soc_id);
+		kfree_const(soc_dev_attr->family);
+		kfree(soc_dev_attr);
+		return PTR_ERR(soc_dev);
+	}
+
+	return 0;
+}
+core_initcall(renesas_soc_init);
-- 
2.7.0.rc3.207.g0ac5344

[GIT PULL] Second Round of Renesas ARM Based SoC Drivers Updates for v4.10

[Olof Johansson]

On Thu, Nov 17, 2016 at 03:04:35PM +0100, Simon Horman wrote:
> Hi Olof, Hi Kevin, Hi Arnd,
> 
> Please consider these second round of Renesas ARM based SoC drivers updates for v4.10.
> 
> This pull request is based on a merge of:
> 
> * The previous round of such requests, tagged as renesas-drivers-for-v4.10,
>   which you have already pulled.
> * The soc-device-match-tag1 tag of Geert Uytterhoeven's renesas-driver's tree.
>   This is included to provide core soc_device_match() infrastructure which
>   is a dependency of identifying SoC and registering with SoC bus.
> 
> 
> The following changes since commit 437c4eeb0bd4c1d68817be997716f52b8c22a9c3:
> 
>   Merge tag 'soc-device-match-tag1' of https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into HEAD (2016-11-15 14:12:57 +0100)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git tags/renesas-drivers2-for-v4.10
> 
> for you to fetch changes up to 63ee9e2ba47dbdb42156c9b940515cfd49e78c91:
> 
>   soc: renesas: Identify SoC and register with the SoC bus (2016-11-17 14:37:20 +0100)
> 
> ----------------------------------------------------------------
> Second Round of Renesas ARM Based SoC Drivers Updates for v4.10
> 
> * Identify SoC and register with the SoC bus
> * Add support for the r8a7745 SoC to rcar-sysc
> 
> ----------------------------------------------------------------
> Geert Uytterhoeven (2):
>       ARM: shmobile: Document DT bindings for Product Register
>       soc: renesas: Identify SoC and register with the SoC bus
> 
> Sergei Shtylyov (2):
>       ARM: shmobile: r8a7745: add power domain index macros
>       soc: renesas: rcar-sysc: add R8A7745 support
> 

So, this pull request contains 8 patches, not 4. Seems like your pull
request doesn't show any of the code from Geert's branch, didn't mention
it in the tag and only in the email text above. Furthermore, Geert's
branch modifies driver core code, so it's extra important to make sure
it's clear that it's an unusual pull request.

Given that this modifies driver core, please either merge that code
through Greg first, or get an ack from him. If you merge through him,
make sure it's on a standalone topic branch that we can share.


-Olof

[GIT PULL] Second Round of Renesas ARM Based SoC Drivers Updates for v4.10

[Geert Uytterhoeven]

Hi Olof,

On Sat, Nov 19, 2016 at 2:35 AM, Olof Johansson <olof@lixom.net> wrote:
> On Thu, Nov 17, 2016 at 03:04:35PM +0100, Simon Horman wrote:
>> Please consider these second round of Renesas ARM based SoC drivers updates for v4.10.
>>
>> This pull request is based on a merge of:
>>
>> * The previous round of such requests, tagged as renesas-drivers-for-v4.10,
>>   which you have already pulled.
>> * The soc-device-match-tag1 tag of Geert Uytterhoeven's renesas-driver's tree.
>>   This is included to provide core soc_device_match() infrastructure which
>>   is a dependency of identifying SoC and registering with SoC bus.
>>
>>
>> The following changes since commit 437c4eeb0bd4c1d68817be997716f52b8c22a9c3:
>>
>>   Merge tag 'soc-device-match-tag1' of https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into HEAD (2016-11-15 14:12:57 +0100)
>>
>> are available in the git repository at:
>>
>>   git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git tags/renesas-drivers2-for-v4.10
>>
>> for you to fetch changes up to 63ee9e2ba47dbdb42156c9b940515cfd49e78c91:
>>
>>   soc: renesas: Identify SoC and register with the SoC bus (2016-11-17 14:37:20 +0100)
>>
>> ----------------------------------------------------------------
>> Second Round of Renesas ARM Based SoC Drivers Updates for v4.10
>>
>> * Identify SoC and register with the SoC bus
>> * Add support for the r8a7745 SoC to rcar-sysc
>>
>> ----------------------------------------------------------------
>> Geert Uytterhoeven (2):
>>       ARM: shmobile: Document DT bindings for Product Register
>>       soc: renesas: Identify SoC and register with the SoC bus
>>
>> Sergei Shtylyov (2):
>>       ARM: shmobile: r8a7745: add power domain index macros
>>       soc: renesas: rcar-sysc: add R8A7745 support
>>
>
> So, this pull request contains 8 patches, not 4. Seems like your pull
> request doesn't show any of the code from Geert's branch, didn't mention
> it in the tag and only in the email text above. Furthermore, Geert's
> branch modifies driver core code, so it's extra important to make sure
> it's clear that it's an unusual pull request.

Please accept our apologies for failing to make this clearer.

> Given that this modifies driver core, please either merge that code
> through Greg first, or get an ack from him. If you merge through him,
> make sure it's on a standalone topic branch that we can share.

I provided my soc-device-match branch (tag soc-device-match-tag1) as an
immutable base, to be included by all interested parties that need the
soc_device_match() infrastructure (Freescale/NXP, Samsung, Renesas).
Its core parts have been acked by Greg, and the fixes by Arnd and/or Greg
(the last fix only received an informal ack, that's why I hadn't added the
ack).
This branch has already been pulled by Ulf, and is present in mmc/next, as
a dependency for a Freescale/NXP driver update.

I hope my explanation helps. If anything is still unclear, please ask.
Thanks for reconsidering!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at 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

[GIT PULL] Second Round of Renesas ARM Based SoC Drivers Updates for v4.10

[Arnd Bergmann]

On Friday, November 18, 2016 5:35:51 PM CET Olof Johansson wrote:
> 
> So, this pull request contains 8 patches, not 4. Seems like your pull
> request doesn't show any of the code from Geert's branch, didn't mention
> it in the tag and only in the email text above. Furthermore, Geert's
> branch modifies driver core code, so it's extra important to make sure
> it's clear that it's an unusual pull request.
> 
> Given that this modifies driver core, please either merge that code
> through Greg first, or get an ack from him. If you merge through him,
> make sure it's on a standalone topic branch that we can share.

As discussed on IRC, I think it makes sense to track that branch
separately in arm-soc, as its own top-level next/* branch.

The branch was first merged into the mmc tree after we got consensus
on the approach.

	Arnd