clk: rockchip: Add clock controller support for RV1126 SoC

Clock & Reset Unit (CRU) in RV1126 support clocks for CRU
and CRU_PMU blocks.

This patch is trying to add minimal Clock-Architecture Diagram's
inferred from [1] authored by Finley Xiao.

[1] https://github.com/rockchip-linux/kernel/blob/develop-4.19/drivers/clk/rockchip/clk-rv1126.c

Cc: linux-clk@vger.kernel.org
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Link: https://lore.kernel.org/r/20220915163947.1922183-5-jagan@edgeble.ai
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

drivers/clk/rockchip/Kconfig

@@ -23,6 +23,13 @@ config CLK_RV110X
 	help
 	  Build the driver for RV110x Clock Driver.
 
+config CLK_RV1126
+	bool "Rockchip RV1126 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RV1126 Clock Driver.
+
 config CLK_RK3036
 	bool "Rockchip RK3036 clock controller support"
 	depends on ARM || COMPILE_TEST

drivers/clk/rockchip/Makefile

@@ -17,6 +17,7 @@ clk-rockchip-$(CONFIG_RESET_CONTROLLER) += softrst.o
 
 obj-$(CONFIG_CLK_PX30)          += clk-px30.o
 obj-$(CONFIG_CLK_RV110X)        += clk-rv1108.o
+obj-$(CONFIG_CLK_RV1126)        += clk-rv1126.o
 obj-$(CONFIG_CLK_RK3036)        += clk-rk3036.o
 obj-$(CONFIG_CLK_RK312X)        += clk-rk3128.o
 obj-$(CONFIG_CLK_RK3188)        += clk-rk3188.o

drivers/clk/rockchip/clk.h

@@ -79,6 +79,25 @@ struct clk;
 #define RV1108_EMMC_CON0		0x1e8
 #define RV1108_EMMC_CON1		0x1ec
 
+#define RV1126_PMU_MODE			0x0
+#define RV1126_PMU_PLL_CON(x)		((x) * 0x4 + 0x10)
+#define RV1126_PMU_CLKSEL_CON(x)	((x) * 0x4 + 0x100)
+#define RV1126_PMU_CLKGATE_CON(x)	((x) * 0x4 + 0x180)
+#define RV1126_PMU_SOFTRST_CON(x)	((x) * 0x4 + 0x200)
+#define RV1126_PLL_CON(x)		((x) * 0x4)
+#define RV1126_MODE_CON			0x90
+#define RV1126_CLKSEL_CON(x)		((x) * 0x4 + 0x100)
+#define RV1126_CLKGATE_CON(x)		((x) * 0x4 + 0x280)
+#define RV1126_SOFTRST_CON(x)		((x) * 0x4 + 0x300)
+#define RV1126_GLB_SRST_FST		0x408
+#define RV1126_GLB_SRST_SND		0x40c
+#define RV1126_SDMMC_CON0		0x440
+#define RV1126_SDMMC_CON1		0x444
+#define RV1126_SDIO_CON0		0x448
+#define RV1126_SDIO_CON1		0x44c
+#define RV1126_EMMC_CON0		0x450
+#define RV1126_EMMC_CON1		0x454
+
 #define RK2928_PLL_CON(x)		((x) * 0x4)
 #define RK2928_MODE_CON		0x40
 #define RK2928_CLKSEL_CON(x)	((x) * 0x4 + 0x44)