soc: renesas: r8a779f0-sysc: Add r8a779f0 support

Add support for R-Car S4-8 (R8A779F0) SoC power areas and register
access.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20211201073308.1003945-7-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/soc/renesas/Kconfig

@@ -340,6 +340,10 @@ config SYSC_R8A77961
 	bool "System Controller support for R-Car M3-W+" if COMPILE_TEST
 	select SYSC_RCAR
 
+config SYSC_R8A779F0
+	bool "System Controller support for R-Car S4-8" if COMPILE_TEST
+	select SYSC_RCAR_GEN4
+
 config SYSC_R8A7792
 	bool "System Controller support for R-Car V2H" if COMPILE_TEST
 	select SYSC_RCAR

drivers/soc/renesas/Makefile

@@ -25,6 +25,7 @@ obj-$(CONFIG_SYSC_R8A77980)	+= r8a77980-sysc.o
 obj-$(CONFIG_SYSC_R8A77990)	+= r8a77990-sysc.o
 obj-$(CONFIG_SYSC_R8A77995)	+= r8a77995-sysc.o
 obj-$(CONFIG_SYSC_R8A779A0)	+= r8a779a0-sysc.o
+obj-$(CONFIG_SYSC_R8A779F0)	+= r8a779f0-sysc.o
 ifdef CONFIG_SMP
 obj-$(CONFIG_ARCH_R9A06G032)	+= r9a06g032-smp.o
 endif

drivers/soc/renesas/r8a779f0-sysc.c

@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas R-Car S4-8 System Controller
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+#include <linux/bits.h>
+#include <linux/clk/renesas.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/of_address.h>
+#include <linux/pm_domain.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <dt-bindings/power/r8a779f0-sysc.h>
+
+#include "rcar-gen4-sysc.h"
+
+static struct rcar_gen4_sysc_area r8a779f0_areas[] __initdata = {
+	{ "always-on",	R8A779F0_PD_ALWAYS_ON, -1, PD_ALWAYS_ON },
+	{ "a3e0",	R8A779F0_PD_A3E0, R8A779F0_PD_ALWAYS_ON, PD_SCU },
+	{ "a3e1",	R8A779F0_PD_A3E1, R8A779F0_PD_ALWAYS_ON, PD_SCU },
+	{ "a2e0d0",	R8A779F0_PD_A2E0D0, R8A779F0_PD_A3E0, PD_SCU },
+	{ "a2e0d1",	R8A779F0_PD_A2E0D1, R8A779F0_PD_A3E0, PD_SCU },
+	{ "a2e1d0",	R8A779F0_PD_A2E1D0, R8A779F0_PD_A3E1, PD_SCU },
+	{ "a2e1d1",	R8A779F0_PD_A2E1D1, R8A779F0_PD_A3E1, PD_SCU },
+	{ "a1e0d0c0",	R8A779F0_PD_A1E0D0C0, R8A779F0_PD_A2E0D0, PD_CPU_NOCR },
+	{ "a1e0d0c1",	R8A779F0_PD_A1E0D0C1, R8A779F0_PD_A2E0D0, PD_CPU_NOCR },
+	{ "a1e0d1c0",	R8A779F0_PD_A1E0D1C0, R8A779F0_PD_A2E0D1, PD_CPU_NOCR },
+	{ "a1e0d1c1",	R8A779F0_PD_A1E0D1C1, R8A779F0_PD_A2E0D1, PD_CPU_NOCR },
+	{ "a1e1d0c0",	R8A779F0_PD_A1E1D0C0, R8A779F0_PD_A2E1D0, PD_CPU_NOCR },
+	{ "a1e1d0c1",	R8A779F0_PD_A1E1D0C1, R8A779F0_PD_A2E1D0, PD_CPU_NOCR },
+	{ "a1e1d1c0",	R8A779F0_PD_A1E1D1C0, R8A779F0_PD_A2E1D1, PD_CPU_NOCR },
+	{ "a1e1d1c1",	R8A779F0_PD_A1E1D1C1, R8A779F0_PD_A2E1D1, PD_CPU_NOCR },
+};
+
+const struct rcar_gen4_sysc_info r8a779f0_sysc_info __initconst = {
+	.areas = r8a779f0_areas,
+	.num_areas = ARRAY_SIZE(r8a779f0_areas),
+};

drivers/soc/renesas/rcar-gen4-sysc.c

@@ -278,6 +278,9 @@ finalize:
 static const struct of_device_id rcar_gen4_sysc_matches[] __initconst = {
 #ifdef CONFIG_SYSC_R8A779A0
 	{ .compatible = "renesas,r8a779a0-sysc", .data = &r8a779a0_sysc_info },
+#endif
+#ifdef CONFIG_SYSC_R8A779F0
+	{ .compatible = "renesas,r8a779f0-sysc", .data = &r8a779f0_sysc_info },
 #endif
 	{ /* sentinel */ }
 };

drivers/soc/renesas/rcar-gen4-sysc.h

@@ -38,5 +38,6 @@ struct rcar_gen4_sysc_info {
 };
 
 extern const struct rcar_gen4_sysc_info r8a779a0_sysc_info;
+extern const struct rcar_gen4_sysc_info r8a779f0_sysc_info;
 
 #endif /* __SOC_RENESAS_RCAR_GEN4_SYSC_H__ */