arm64: renesas: r8a7795: Add Renesas R8A7795 SoC support

From: Gaku Inami <[email protected]>

Initial version of Renesas R-Car H3 support (V10)

---

TODO:
- Split this patch based on ARM-SoC maintainer preference

Changes since v9: (Magnus Damm <[email protected]>)
- Added clock-output-names for the CPG

Changes since v8: (Magnus Damm <[email protected]>)
- Renamed xtal node name to drop _clk - thanks Geert!
- Kconfig s/platform/platforms/g - thanks Laurent!
- Added select PINCTRL - thanks Geert
- Removed unused Makefile subdir line - thanks Laurent!

Changes since v7: (Magnus Damm <[email protected]>)
- Folded together the following patches from v7:

     [PATCH 6/25] arm64: renesas: Add new Renesas R-Car Gen3 SoC Kconfig
     [PATCH 7/25] arm64: renesas: r8a7795: Add Renesas R8A7795 SoC support
     [PATCH 8/25] arm64: renesas: r8a7795: Add initial SoC support

- Updated Kconfig bits
Changed to CONFIG_ARCH_R8A7795 and CONFIG_RENESAS CONFIG_ARCH_SHMOBILE is still set to be able to build various drivers CONFIG_ARCH_SHMOBILE_MULTI is gone
select PM_GENERIC_DOMAINS if PM
- Moved "s3d4_clk" to clock patch from geert
- Replaced CPG clock-output-names with clock-indices
- set #power-domain-cells to 0

 Documentation/devicetree/bindings/arm/shmobile.txt |    2 
 arch/arm64/Kconfig.platforms                       |   17 +++
 arch/arm64/boot/dts/Makefile                       |    1 
 arch/arm64/boot/dts/renesas/Makefile               |    2 
 arch/arm64/boot/dts/renesas/r8a7795.dtsi           |   89 ++++++++++++++++++++
 include/dt-bindings/clock/r8a7795-clock.h          |   38 ++++++++
 6 files changed, 149 insertions(+)

@@ -27,6 +27,8 @@ SoCs:
     compatible = "renesas,r8a7793"
   - R-Car E2 (R8A77940)
     compatible = "renesas,r8a7794"
+  - R-Car H3 (R8A77950)
+    compatible = "renesas,r8a7795"
 
 
 Boards:

@@ -66,6 +66,23 @@ config ARCH_SEATTLE
 	help
 	  This enables support for AMD Seattle SOC Family
 
+config ARCH_SHMOBILE
+	bool
+
+config ARCH_RENESAS
+	bool "Renesas SoC Platforms"
+	select ARCH_SHMOBILE
+	select PINCTRL
+	select PM_GENERIC_DOMAINS if PM
+	help
+	  This enables support for the ARMv8 based Renesas SoCs.
+
+config ARCH_R8A7795
+	bool "Renesas R-Car H3 SoC Platform"
+	depends on ARCH_RENESAS
+	help
+	  This enables support for the Renesas R-Car H3 SoC.
+
 config ARCH_TEGRA
 	bool "NVIDIA Tegra SoC Family"
 	select ARCH_HAS_RESET_CONTROLLER

@@ -9,6 +9,7 @@ dts-dirs += hisilicon
 dts-dirs += marvell
 dts-dirs += mediatek
 dts-dirs += qcom
+dts-dirs += renesas
 dts-dirs += rockchip
 dts-dirs += sprd
 dts-dirs += xilinx

@@ -0,0 +1,2 @@
+always		:= $(dtb-y)
+clean-files	:= *.dtb

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2015 Renesas Electronics Corp.
+ *
+ * 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 __DT_BINDINGS_CLOCK_R8A7795_H__
+#define __DT_BINDINGS_CLOCK_R8A7795_H__
+
+/* CPG */
+#define R8A7795_CLK_MAIN		0
+#define R8A7795_CLK_PLL0		1
+#define R8A7795_CLK_PLL1		2
+#define R8A7795_CLK_PLL2		3
+#define R8A7795_CLK_PLL3		4
+#define R8A7795_CLK_PLL4		5
+
+/* MSTP0 */
+
+/* MSTP1 */
+
+/* MSTP2 */
+
+/* MSTP3 */
+
+/* MSTP5 */
+
+/* MSTP7 */
+
+/* MSTP8 */
+
+/* MSTP9 */
+
+/* MSTP10 */
+
+#endif /* __DT_BINDINGS_CLOCK_R8A7795_H__ */