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From:   Jacopo Mondi <jacopo+renesas@jmondi.org>
To:     geert@linux-m68k.org, horms@verge.net.au, magnus.damm@gmail.com,
        robh+dt@kernel.org, mark.rutland@arm.com
Cc:     Jacopo Mondi <jacopo+renesas@jmondi.org>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 03/15] soc: renesas: Add R-Car M3-N support
Date:   Tue, 13 Feb 2018 10:45:50 +0100
Message-Id: <1518515162-23663-4-git-send-email-jacopo+renesas@jmondi.org>
In-Reply-To: <1518515162-23663-1-git-send-email-jacopo+renesas@jmondi.org>
References: <1518515162-23663-1-git-send-email-jacopo+renesas@jmondi.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Add support for R-Car M3-N (r8a77965) power areas and reset.
M3-N power areas are identical to M3-W ones, so just copy and rename
them.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 .../bindings/power/renesas,rcar-sysc.txt           |  1 +
 .../devicetree/bindings/reset/renesas,rst.txt      |  1 +
 drivers/soc/renesas/Kconfig                        |  9 ++++--
 drivers/soc/renesas/Makefile                       |  1 +
 drivers/soc/renesas/r8a77965-sysc.c                | 37 ++++++++++++++++++++++
 drivers/soc/renesas/rcar-rst.c                     |  1 +
 drivers/soc/renesas/rcar-sysc.c                    |  3 ++
 drivers/soc/renesas/rcar-sysc.h                    |  1 +
 drivers/soc/renesas/renesas-soc.c                  |  8 +++++
 include/dt-bindings/power/r8a77965-sysc.h          | 31 ++++++++++++++++++
 10 files changed, 91 insertions(+), 2 deletions(-)
 create mode 100644 drivers/soc/renesas/r8a77965-sysc.c
 create mode 100644 include/dt-bindings/power/r8a77965-sysc.h

diff --git a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
index 8690f10..b9c9e28 100644
--- a/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
+++ b/Documentation/devicetree/bindings/power/renesas,rcar-sysc.txt
@@ -17,6 +17,7 @@ Required properties:
       - "renesas,r8a7794-sysc" (R-Car E2)
       - "renesas,r8a7795-sysc" (R-Car H3)
       - "renesas,r8a7796-sysc" (R-Car M3-W)
+      - "renesas,r8a77965-sysc" (R-Car M3-N)
       - "renesas,r8a77970-sysc" (R-Car V3M)
       - "renesas,r8a77995-sysc" (R-Car D3)
   - reg: Address start and address range for the device.
diff --git a/Documentation/devicetree/bindings/reset/renesas,rst.txt b/Documentation/devicetree/bindings/reset/renesas,rst.txt
index a8014f3..64051d0 100644
--- a/Documentation/devicetree/bindings/reset/renesas,rst.txt
+++ b/Documentation/devicetree/bindings/reset/renesas,rst.txt
@@ -26,6 +26,7 @@ Required properties:
 		  - "renesas,r8a7794-rst" (R-Car E2)
 		  - "renesas,r8a7795-rst" (R-Car H3)
 		  - "renesas,r8a7796-rst" (R-Car M3-W)
+		  - "renesas,r8a77965-rst" (R-Car M3-N)
 		  - "renesas,r8a77970-rst" (R-Car V3M)
 		  - "renesas,r8a77995-rst" (R-Car D3)
   - reg: Address start and address range for the device.
diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index 09550b1..def33f7 100644
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -3,8 +3,8 @@ config SOC_RENESAS
 	default y if ARCH_RENESAS
 	select SOC_BUS
 	select RST_RCAR if ARCH_RCAR_GEN1 || ARCH_RCAR_GEN2 || \
-			   ARCH_R8A7795 || ARCH_R8A7796 || ARCH_R8A77970 || \
-			   ARCH_R8A77995
+			   ARCH_R8A7795 || ARCH_R8A7796 || ARCH_R8A77965 || \
+			   ARCH_R8A77970 || ARCH_R8A77995
 	select SYSC_R8A7743 if ARCH_R8A7743
 	select SYSC_R8A7745 if ARCH_R8A7745
 	select SYSC_R8A7779 if ARCH_R8A7779
@@ -14,6 +14,7 @@ config SOC_RENESAS
 	select SYSC_R8A7794 if ARCH_R8A7794
 	select SYSC_R8A7795 if ARCH_R8A7795
 	select SYSC_R8A7796 if ARCH_R8A7796
+	select SYSC_R8A77965 if ARCH_R8A77965
 	select SYSC_R8A77970 if ARCH_R8A77970
 	select SYSC_R8A77995 if ARCH_R8A77995

@@ -56,6 +57,10 @@ config SYSC_R8A7796
 	bool "R-Car M3-W System Controller support" if COMPILE_TEST
 	select SYSC_RCAR

+config SYSC_R8A77965
+	bool "R-Car M3-N System Controller support" if COMPILE_TEST
+	select SYSC_RCAR
+
 config SYSC_R8A77970
 	bool "R-Car V3M System Controller support" if COMPILE_TEST
 	select SYSC_RCAR
diff --git a/drivers/soc/renesas/Makefile b/drivers/soc/renesas/Makefile
index 845d62a..9f360b8 100644
--- a/drivers/soc/renesas/Makefile
+++ b/drivers/soc/renesas/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_SYSC_R8A7792)	+= r8a7792-sysc.o
 obj-$(CONFIG_SYSC_R8A7794)	+= r8a7794-sysc.o
 obj-$(CONFIG_SYSC_R8A7795)	+= r8a7795-sysc.o
 obj-$(CONFIG_SYSC_R8A7796)	+= r8a7796-sysc.o
+obj-$(CONFIG_SYSC_R8A77965)	+= r8a77965-sysc.o
 obj-$(CONFIG_SYSC_R8A77970)	+= r8a77970-sysc.o
 obj-$(CONFIG_SYSC_R8A77995)	+= r8a77995-sysc.o

diff --git a/drivers/soc/renesas/r8a77965-sysc.c b/drivers/soc/renesas/r8a77965-sysc.c
new file mode 100644
index 0000000..f3e17f3
--- /dev/null
+++ b/drivers/soc/renesas/r8a77965-sysc.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas R-Car M3-N System Controller
+ * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ *
+ * Based on Renesas R-Car M3-W System Controller
+ * Copyright (C) 2016 Glider bvba
+ */
+
+#include <linux/bug.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/power/r8a77965-sysc.h>
+
+#include "rcar-sysc.h"
+
+static const struct rcar_sysc_area r8a77965_areas[] __initconst = {
+	{ "always-on",	    0, 0, R8A77965_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
+	{ "ca57-scu",	0x1c0, 0, R8A77965_PD_CA57_SCU,	R8A77965_PD_ALWAYS_ON,
+	  PD_SCU },
+	{ "ca57-cpu0",	 0x80, 0, R8A77965_PD_CA57_CPU0, R8A77965_PD_CA57_SCU,
+	  PD_CPU_NOCR },
+	{ "ca57-cpu1",	 0x80, 1, R8A77965_PD_CA57_CPU1, R8A77965_PD_CA57_SCU,
+	  PD_CPU_NOCR },
+	{ "cr7",	0x240, 0, R8A77965_PD_CR7,	R8A77965_PD_ALWAYS_ON },
+	{ "a3vc",	0x380, 0, R8A77965_PD_A3VC,	R8A77965_PD_ALWAYS_ON },
+	{ "a2vc0",	0x3c0, 0, R8A77965_PD_A2VC0,	R8A77965_PD_A3VC },
+	{ "a2vc1",	0x3c0, 1, R8A77965_PD_A2VC1,	R8A77965_PD_A3VC },
+	{ "3dg-a",	0x100, 0, R8A77965_PD_3DG_A,	R8A77965_PD_ALWAYS_ON },
+	{ "3dg-b",	0x100, 1, R8A77965_PD_3DG_B,	R8A77965_PD_3DG_A },
+	{ "a3ir",	0x180, 0, R8A77965_PD_A3IR,	R8A77965_PD_ALWAYS_ON },
+};
+
+const struct rcar_sysc_info r8a77965_sysc_info __initconst = {
+	.areas = r8a77965_areas,
+	.num_areas = ARRAY_SIZE(r8a77965_areas),
+};
diff --git a/drivers/soc/renesas/rcar-rst.c b/drivers/soc/renesas/rcar-rst.c
index 3316b02..9a84009 100644
--- a/drivers/soc/renesas/rcar-rst.c
+++ b/drivers/soc/renesas/rcar-rst.c
@@ -41,6 +41,7 @@ static const struct of_device_id rcar_rst_matches[] __initconst = {
 	/* R-Car Gen3 is handled like R-Car Gen2 */
 	{ .compatible = "renesas,r8a7795-rst", .data = &rcar_rst_gen2 },
 	{ .compatible = "renesas,r8a7796-rst", .data = &rcar_rst_gen2 },
+	{ .compatible = "renesas,r8a77965-rst", .data = &rcar_rst_gen2 },
 	{ .compatible = "renesas,r8a77970-rst", .data = &rcar_rst_gen2 },
 	{ .compatible = "renesas,r8a77995-rst", .data = &rcar_rst_gen2 },
 	{ /* sentinel */ }
diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c
index 636872b..d87f83a 100644
--- a/drivers/soc/renesas/rcar-sysc.c
+++ b/drivers/soc/renesas/rcar-sysc.c
@@ -284,6 +284,9 @@ static const struct of_device_id rcar_sysc_matches[] __initconst = {
 #ifdef CONFIG_SYSC_R8A7796
 	{ .compatible = "renesas,r8a7796-sysc", .data = &r8a7796_sysc_info },
 #endif
+#ifdef CONFIG_SYSC_R8A77965
+	{ .compatible = "renesas,r8a77965-sysc", .data = &r8a77965_sysc_info },
+#endif
 #ifdef CONFIG_SYSC_R8A77970
 	{ .compatible = "renesas,r8a77970-sysc", .data = &r8a77970_sysc_info },
 #endif
diff --git a/drivers/soc/renesas/rcar-sysc.h b/drivers/soc/renesas/rcar-sysc.h
index 9d9daf9..c892105 100644
--- a/drivers/soc/renesas/rcar-sysc.h
+++ b/drivers/soc/renesas/rcar-sysc.h
@@ -58,6 +58,7 @@ extern const struct rcar_sysc_info r8a7792_sysc_info;
 extern const struct rcar_sysc_info r8a7794_sysc_info;
 extern const struct rcar_sysc_info r8a7795_sysc_info;
 extern const struct rcar_sysc_info r8a7796_sysc_info;
+extern const struct rcar_sysc_info r8a77965_sysc_info;
 extern const struct rcar_sysc_info r8a77970_sysc_info;
 extern const struct rcar_sysc_info r8a77995_sysc_info;

diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c
index 926b7fd..b9e4660 100644
--- a/drivers/soc/renesas/renesas-soc.c
+++ b/drivers/soc/renesas/renesas-soc.c
@@ -144,6 +144,11 @@ static const struct renesas_soc soc_rcar_m3_w __initconst __maybe_unused = {
 	.id	= 0x52,
 };

+static const struct renesas_soc soc_rcar_m3_n __initconst __maybe_unused = {
+	.family	= &fam_rcar_gen3,
+	.id	= 0x55,
+};
+
 static const struct renesas_soc soc_rcar_v3m __initconst __maybe_unused = {
 	.family	= &fam_rcar_gen3,
 	.id	= 0x54,
@@ -209,6 +214,9 @@ static const struct of_device_id renesas_socs[] __initconst = {
 #ifdef CONFIG_ARCH_R8A7796
 	{ .compatible = "renesas,r8a7796",	.data = &soc_rcar_m3_w },
 #endif
+#ifdef CONFIG_ARCH_R8A77965
+	{ .compatible = "renesas,r8a77965",	.data = &soc_rcar_m3_n },
+#endif
 #ifdef CONFIG_ARCH_R8A77970
 	{ .compatible = "renesas,r8a77970",	.data = &soc_rcar_v3m },
 #endif
diff --git a/include/dt-bindings/power/r8a77965-sysc.h b/include/dt-bindings/power/r8a77965-sysc.h
new file mode 100644
index 0000000..1c41f62
--- /dev/null
+++ b/include/dt-bindings/power/r8a77965-sysc.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ * Copyright (C) 2016 Glider bvba
+ */
+
+#ifndef __DT_BINDINGS_POWER_R8A77965_SYSC_H__
+#define __DT_BINDINGS_POWER_R8A77965_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 R8A77965_PD_CA57_CPU0		 0
+#define R8A77965_PD_CA57_CPU1		 1
+#define R8A77965_PD_A3VP		 9
+#define R8A77965_PD_CA57_SCU		12
+#define R8A77965_PD_CR7			13
+#define R8A77965_PD_A3VC		14
+#define R8A77965_PD_3DG_A		17
+#define R8A77965_PD_3DG_B		18
+#define R8A77965_PD_A3IR		24
+#define R8A77965_PD_A2VC0		25
+#define R8A77965_PD_A2VC1		26
+
+/* Always-on power area */
+#define R8A77965_PD_ALWAYS_ON		32
+
+#endif /* __DT_BINDINGS_POWER_R8A77965_SYSC_H__ */
--
2.7.4