clk: renesas: rzg2l-cpg: Add support for RZ/V2L SoC

The clock structure for RZ/V2L is almost identical to the RZ/G2L SoC.
The only difference being that RZ/V2L has additional registers to
control clocks and resets for the DRP-AI block.

Reuse r9a07g044-cpg.c, as the clock IDs and reset IDs are the same
between RZ/G2L and RZ/V2L, and add a separate r9a07g054_cpg_info to take
care of the DRP-AI clocks/resets.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220205084006.7142-1-biju.das.jz@bp.renesas.com
Link: https://lore.kernel.org/r/20220209203411.22332-1-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/Kconfig

@@ -34,6 +34,7 @@ config CLK_RENESAS
 	select CLK_R8A779F0 if ARCH_R8A779F0
 	select CLK_R9A06G032 if ARCH_R9A06G032
 	select CLK_R9A07G044 if ARCH_R9A07G044
+	select CLK_R9A07G054 if ARCH_R9A07G054
 	select CLK_SH73A0 if ARCH_SH73A0
 
 if CLK_RENESAS
@@ -163,6 +164,10 @@ config CLK_R9A07G044
 	bool "RZ/G2L clock support" if COMPILE_TEST
 	select CLK_RZG2L
 
+config CLK_R9A07G054
+	bool "RZ/V2L clock support" if COMPILE_TEST
+	select CLK_RZG2L
+
 config CLK_SH73A0
 	bool "SH-Mobile AG5 clock support" if COMPILE_TEST
 	select CLK_RENESAS_CPG_MSTP
@@ -195,7 +200,7 @@ config CLK_RCAR_USB2_CLOCK_SEL
 	  This is a driver for R-Car USB2 clock selector
 
 config CLK_RZG2L
-	bool "Renesas RZ/G2L family clock support" if COMPILE_TEST
+	bool "Renesas RZ/{G2L,V2L} family clock support" if COMPILE_TEST
 	select RESET_CONTROLLER
 
 # Generic

drivers/clk/renesas/Makefile

@@ -31,6 +31,7 @@ obj-$(CONFIG_CLK_R8A779A0)		+= r8a779a0-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A779F0)		+= r8a779f0-cpg-mssr.o
 obj-$(CONFIG_CLK_R9A06G032)		+= r9a06g032-clocks.o
 obj-$(CONFIG_CLK_R9A07G044)		+= r9a07g044-cpg.o
+obj-$(CONFIG_CLK_R9A07G054)		+= r9a07g044-cpg.o
 obj-$(CONFIG_CLK_SH73A0)		+= clk-sh73a0.o
 
 # Family

drivers/clk/renesas/r9a07g044-cpg.c

@@ -11,12 +11,13 @@
 #include <linux/kernel.h>
 
 #include <dt-bindings/clock/r9a07g044-cpg.h>
+#include <dt-bindings/clock/r9a07g054-cpg.h>
 
 #include "rzg2l-cpg.h"
 
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
-	LAST_DT_CORE_CLK = R9A07G044_CLK_P0_DIV2,
+	LAST_DT_CORE_CLK = R9A07G054_CLK_DRP_A,
 
 	/* External Input Clocks */
 	CLK_EXTAL,
@@ -80,7 +81,13 @@ static const char * const sel_pll6_2[]	= { ".pll6_250", ".pll5_250" };
 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
 static const char * const sel_gpu2[] = { ".pll6", ".pll3_div2_2" };
 
-static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
+static const struct {
+	struct cpg_core_clk common[44];
+#ifdef CONFIG_CLK_R9A07G054
+	struct cpg_core_clk drp[0];
+#endif
+} core_clks __initconst = {
+	.common = {
 		/* External Clock Inputs */
 		DEF_INPUT("extal", CLK_EXTAL),
 
@@ -147,9 +154,20 @@ static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
 		DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G044_CLK_SD1, 1, 4),
 		DEF_DIV("G", R9A07G044_CLK_G, CLK_SEL_GPU2, DIVGPU, dtable_1_8,
 			CLK_DIVIDER_HIWORD_MASK),
+	},
+#ifdef CONFIG_CLK_R9A07G054
+	.drp = {
+	},
+#endif
 };
 
-static struct rzg2l_mod_clk r9a07g044_mod_clks[] = {
+static const struct {
+	struct rzg2l_mod_clk common[62];
+#ifdef CONFIG_CLK_R9A07G054
+	struct rzg2l_mod_clk drp[0];
+#endif
+} mod_clks = {
+	.common = {
 		DEF_MOD("gic",		R9A07G044_GIC600_GICCLK, R9A07G044_CLK_P1,
 					0x514, 0),
 		DEF_MOD("ia55_pclk",	R9A07G044_IA55_PCLK, R9A07G044_CLK_P2,
@@ -274,6 +292,11 @@ static struct rzg2l_mod_clk r9a07g044_mod_clks[] = {
 					0x5a8, 1),
 		DEF_MOD("tsu_pclk",	R9A07G044_TSU_PCLK, R9A07G044_CLK_TSU,
 					0x5ac, 0),
+	},
+#ifdef CONFIG_CLK_R9A07G054
+	.drp = {
+	},
+#endif
 };
 
 static struct rzg2l_reset r9a07g044_resets[] = {
@@ -336,8 +359,8 @@ static const unsigned int r9a07g044_crit_mod_clks[] __initconst = {
 
 const struct rzg2l_cpg_info r9a07g044_cpg_info = {
 	/* Core Clocks */
-	.core_clks = r9a07g044_core_clks,
-	.num_core_clks = ARRAY_SIZE(r9a07g044_core_clks),
+	.core_clks = core_clks.common,
+	.num_core_clks = ARRAY_SIZE(core_clks.common),
 	.last_dt_core_clk = LAST_DT_CORE_CLK,
 	.num_total_core_clks = MOD_CLK_BASE,
 
@@ -346,11 +369,34 @@ const struct rzg2l_cpg_info r9a07g044_cpg_info = {
 	.num_crit_mod_clks = ARRAY_SIZE(r9a07g044_crit_mod_clks),
 
 	/* Module Clocks */
-	.mod_clks = r9a07g044_mod_clks,
-	.num_mod_clks = ARRAY_SIZE(r9a07g044_mod_clks),
+	.mod_clks = mod_clks.common,
+	.num_mod_clks = ARRAY_SIZE(mod_clks.common),
 	.num_hw_mod_clks = R9A07G044_TSU_PCLK + 1,
 
 	/* Resets */
 	.resets = r9a07g044_resets,
-	.num_resets = ARRAY_SIZE(r9a07g044_resets),
+	.num_resets = R9A07G044_TSU_PRESETN + 1, /* Last reset ID + 1 */
 };
+
+#ifdef CONFIG_CLK_R9A07G054
+const struct rzg2l_cpg_info r9a07g054_cpg_info = {
+	/* Core Clocks */
+	.core_clks = core_clks.common,
+	.num_core_clks = ARRAY_SIZE(core_clks.common) + ARRAY_SIZE(core_clks.drp),
+	.last_dt_core_clk = LAST_DT_CORE_CLK,
+	.num_total_core_clks = MOD_CLK_BASE,
+
+	/* Critical Module Clocks */
+	.crit_mod_clks = r9a07g044_crit_mod_clks,
+	.num_crit_mod_clks = ARRAY_SIZE(r9a07g044_crit_mod_clks),
+
+	/* Module Clocks */
+	.mod_clks = mod_clks.common,
+	.num_mod_clks = ARRAY_SIZE(mod_clks.common) + ARRAY_SIZE(mod_clks.drp),
+	.num_hw_mod_clks = R9A07G054_STPAI_ACLK_DRP + 1,
+
+	/* Resets */
+	.resets = r9a07g044_resets,
+	.num_resets = R9A07G054_STPAI_ARESETN + 1, /* Last reset ID + 1 */
+};
+#endif

drivers/clk/renesas/rzg2l-cpg.c

@@ -952,6 +952,12 @@ static const struct of_device_id rzg2l_cpg_match[] = {
 		.compatible = "renesas,r9a07g044-cpg",
 		.data = &r9a07g044_cpg_info,
 	},
+#endif
+#ifdef CONFIG_CLK_R9A07G054
+	{
+		.compatible = "renesas,r9a07g054-cpg",
+		.data = &r9a07g054_cpg_info,
+	},
 #endif
 	{ /* sentinel */ }
 };

drivers/clk/renesas/rzg2l-cpg.h

@@ -203,5 +203,6 @@ struct rzg2l_cpg_info {
 };
 
 extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
+extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
 
 #endif