[PATCH v2 13/28] clk: renesas: add minimal boot support for RZ/G3S SoC

Claudiu
2023-09-29T05:40:50Z

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add minimal clock and reset support for RZ/G3S SoC to be able to boot
Linux from SD Card/eMMC. This includes necessary core clocks for booting
and GIC, SCIF, GPIO, SD0 mod clocks and resets.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- used RZ/G3S specific definition for CPG_CLKDIVSTATUS register
- removed CLK_PLL3_DIV2_2, CLK_SD0_DIV, CLK_S0_DIV2
- added space after { and before } in array initializations
- s/indexes/indices/g
- s/.osc/OSC and moved it in core output clocks section
- s/.osc2/OSC2 and moved it in core output clock section
- s/SD0_DIV4/.sd0_div4

drivers/clk/renesas/Kconfig | 7 +-
drivers/clk/renesas/Makefile | 1 +
drivers/clk/renesas/r9a08g045-cpg.c | 213 ++++++++++++++++++++++++++++
drivers/clk/renesas/rzg2l-cpg.c | 6 +
drivers/clk/renesas/rzg2l-cpg.h | 1 +
5 files changed, 227 insertions(+), 1 deletion(-)
create mode 100644 drivers/clk/renesas/r9a08g045-cpg.c

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 37632a0659d8..69396e197959 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -37,6 +37,7 @@ config CLK_RENESAS
select CLK_R9A07G043 if ARCH_R9A07G043
select CLK_R9A07G044 if ARCH_R9A07G044
select CLK_R9A07G054 if ARCH_R9A07G054
+ select CLK_R9A08G045 if ARCH_R9A08G045
select CLK_R9A09G011 if ARCH_R9A09G011
select CLK_SH73A0 if ARCH_SH73A0

@@ -179,6 +180,10 @@ config CLK_R9A07G054
bool "RZ/V2L clock support" if COMPILE_TEST
select CLK_RZG2L

+config CLK_R9A08G045
+ bool "RZ/G3S clock support" if COMPILE_TEST
+ select CLK_RZG2L
+
config CLK_R9A09G011
bool "RZ/V2M clock support" if COMPILE_TEST
select CLK_RZG2L
@@ -215,7 +220,7 @@ config CLK_RCAR_USB2_CLOCK_SEL
This is a driver for R-Car USB2 clock selector

config CLK_RZG2L
- bool "Renesas RZ/{G2L,G2UL,V2L} family clock support" if COMPILE_TEST
+ bool "Renesas RZ/{G2L,G2UL,G3S,V2L} family clock support" if COMPILE_TEST
select RESET_CONTROLLER

# Generic
diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index de907623fe3f..879a07d445f9 100644
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_CLK_R9A06G032) += r9a06g032-clocks.o
obj-$(CONFIG_CLK_R9A07G043) += r9a07g043-cpg.o
obj-$(CONFIG_CLK_R9A07G044) += r9a07g044-cpg.o
obj-$(CONFIG_CLK_R9A07G054) += r9a07g044-cpg.o
+obj-$(CONFIG_CLK_R9A08G045) += r9a08g045-cpg.o
obj-$(CONFIG_CLK_R9A09G011) += r9a09g011-cpg.o
obj-$(CONFIG_CLK_SH73A0) += clk-sh73a0.o

diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
new file mode 100644
index 000000000000..6e4ac0860694
--- /dev/null
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RZ/G3S CPG driver
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/clock/r9a08g045-cpg.h>
+
+#include "rzg2l-cpg.h"
+
+/* RZ/G3S Specific registers. */
+#define G3S_CPG_PL2_DDIV (0x204)
+#define G3S_CPG_SDHI_DDIV (0x218)
+#define G3S_CPG_PLL_DSEL (0x240)
+#define G3S_CPG_SDHI_DSEL (0x244)
+#define G3S_CLKDIVSTATUS (0x280)
+#define G3S_CLKSELSTATUS (0x284)
+
+/* RZ/G3S Specific division configuration. */
+#define G3S_DIVPL2B DDIV_PACK(G3S_CPG_PL2_DDIV, 4, 3)
+#define G3S_DIV_SDHI0 DDIV_PACK(G3S_CPG_SDHI_DDIV, 0, 1)
+
+/* RZ/G3S Clock status configuration. */
+#define G3S_DIVPL1A_STS DDIV_PACK(G3S_CLKDIVSTATUS, 0, 1)
+#define G3S_DIVPL2B_STS DDIV_PACK(G3S_CLKDIVSTATUS, 5, 1)
+#define G3S_DIVPL3A_STS DDIV_PACK(G3S_CLKDIVSTATUS, 8, 1)
+#define G3S_DIVPL3B_STS DDIV_PACK(G3S_CLKDIVSTATUS, 9, 1)
+#define G3S_DIVPL3C_STS DDIV_PACK(G3S_CLKDIVSTATUS, 10, 1)
+#define G3S_DIV_SDHI0_STS DDIV_PACK(G3S_CLKDIVSTATUS, 24, 1)
+
+#define G3S_SEL_PLL4_STS SEL_PLL_PACK(G3S_CLKSELSTATUS, 6, 1)
+#define G3S_SEL_SDHI0_STS SEL_PLL_PACK(G3S_CLKSELSTATUS, 16, 1)
+
+/* RZ/G3S Specific clocks select. */
+#define G3S_SEL_PLL4 SEL_PLL_PACK(G3S_CPG_PLL_DSEL, 6, 1)
+#define G3S_SEL_SDHI0 SEL_PLL_PACK(G3S_CPG_SDHI_DSEL, 0, 2)
+
+/* PLL 1/4/6 configuration registers macro. */
+#define G3S_PLL146_CONF(clk1, clk2) ((clk1) << 22 | (clk2) << 12)
+
+#define DEF_G3S_MUX(_name, _id, _conf, _parent_names, _mux_flags, _clk_flags) \
+ DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = (_conf), \
+ .parent_names = (_parent_names), \
+ .num_parents = ARRAY_SIZE((_parent_names)), \
+ .mux_flags = CLK_MUX_HIWORD_MASK | (_mux_flags), \
+ .flag = (_clk_flags))
+
+enum clk_ids {
+ /* Core Clock Outputs exported to DT */
+ LAST_DT_CORE_CLK = R9A08G045_SWD,
+
+ /* External Input Clocks */
+ CLK_EXTAL,
+
+ /* Internal Core Clocks */
+ CLK_OSC_DIV1000,
+ CLK_PLL1,
+ CLK_PLL2,
+ CLK_PLL2_DIV2,
+ CLK_PLL2_DIV2_8,
+ CLK_PLL2_DIV6,
+ CLK_PLL3,
+ CLK_PLL3_DIV2,
+ CLK_PLL3_DIV2_4,
+ CLK_PLL3_DIV2_8,
+ CLK_PLL3_DIV6,
+ CLK_PLL4,
+ CLK_PLL6,
+ CLK_PLL6_DIV2,
+ CLK_SEL_SDHI0,
+ CLK_SEL_PLL4,
+ CLK_P1_DIV2,
+ CLK_P3_DIV2,
+ CLK_SD0_DIV4,
+
+ /* Module Clocks */
+ MOD_CLK_BASE,
+};
+
+/* Divider tables */
+static const struct clk_div_table dtable_1_2[] = {
+ { 0, 1 },
+ { 1, 2 },
+ { 0, 0 },
+};
+
+static const struct clk_div_table dtable_1_8[] = {
+ { 0, 1 },
+ { 1, 2 },
+ { 2, 4 },
+ { 3, 8 },
+ { 0, 0 },
+};
+
+static const struct clk_div_table dtable_1_32[] = {
+ { 0, 1 },
+ { 1, 2 },
+ { 2, 4 },
+ { 3, 8 },
+ { 4, 32 },
+ { 0, 0 },
+};
+
+/* Mux clock names tables. */
+static const char * const sel_sdhi[] = { ".pll2_div2", ".pll6", ".pll2_div6" };
+static const char * const sel_pll4[] = { ".osc_div1000", ".pll4" };
+
+/* Mux clock indices tables. */
+static const u32 mtable_sd[] = { 0, 2, 3 };
+static const u32 mtable_pll4[] = { 0, 1 };
+
+static const struct cpg_core_clk r9a08g045_core_clks[] __initconst = {
+ /* External Clock Inputs */
+ DEF_INPUT("extal", CLK_EXTAL),
+
+ /* Internal Core Clocks */
+ DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
+ DEF_G3S_PLL(".pll1", CLK_PLL1, CLK_EXTAL, G3S_PLL146_CONF(0x4, 0x8)),
+ DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 200, 3),
+ DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 200, 3),
+ DEF_FIXED(".pll4", CLK_PLL4, CLK_EXTAL, 100, 3),
+ DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6),
+ DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
+ DEF_FIXED(".pll2_div2_8", CLK_PLL2_DIV2_8, CLK_PLL2_DIV2, 1, 8),
+ DEF_FIXED(".pll2_div6", CLK_PLL2_DIV6, CLK_PLL2, 1, 6),
+ DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
+ DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4),
+ DEF_FIXED(".pll3_div2_8", CLK_PLL3_DIV2_8, CLK_PLL3_DIV2, 1, 8),
+ DEF_FIXED(".pll3_div6", CLK_PLL3_DIV6, CLK_PLL3, 1, 6),
+ DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 1, 2),
+ DEF_SD_MUX(".sel_sd0", CLK_SEL_SDHI0, G3S_SEL_SDHI0, G3S_SEL_SDHI0_STS, sel_sdhi,
+ mtable_sd, 0, NULL),
+ DEF_SD_MUX(".sel_pll4", CLK_SEL_PLL4, G3S_SEL_PLL4, G3S_SEL_PLL4_STS, sel_pll4,
+ mtable_pll4, CLK_SET_PARENT_GATE, NULL),
+
+ /* Core output clk */
+ DEF_G3S_DIV("I", R9A08G045_CLK_I, CLK_PLL1, DIVPL1A, G3S_DIVPL1A_STS, dtable_1_8,
+ 0, 0, NULL),
+ DEF_G3S_DIV("P0", R9A08G045_CLK_P0, CLK_PLL2_DIV2_8, G3S_DIVPL2B, G3S_DIVPL2B_STS,
+ dtable_1_32, 0, 0, NULL),
+ DEF_G3S_DIV("SD0", R9A08G045_CLK_SD0, CLK_SEL_SDHI0, G3S_DIV_SDHI0, G3S_DIV_SDHI0_STS,
+ dtable_1_2, 800000000UL, CLK_SET_RATE_PARENT, rzg3s_cpg_div_clk_notifier),
+ DEF_FIXED(".sd0_div4", CLK_SD0_DIV4, R9A08G045_CLK_SD0, 1, 4),
+ DEF_FIXED("M0", R9A08G045_CLK_M0, CLK_PLL3_DIV2_4, 1, 1),
+ DEF_G3S_DIV("P1", R9A08G045_CLK_P1, CLK_PLL3_DIV2_4, DIVPL3A, G3S_DIVPL3A_STS,
+ dtable_1_32, 0, 0, NULL),
+ DEF_FIXED("P1_DIV2", CLK_P1_DIV2, R9A08G045_CLK_P1, 1, 2),
+ DEF_G3S_DIV("P2", R9A08G045_CLK_P2, CLK_PLL3_DIV2_8, DIVPL3B, G3S_DIVPL3B_STS,
+ dtable_1_32, 0, 0, NULL),
+ DEF_G3S_DIV("P3", R9A08G045_CLK_P3, CLK_PLL3_DIV2_4, DIVPL3C, G3S_DIVPL3C_STS,
+ dtable_1_32, 0, 0, NULL),
+ DEF_FIXED("P3_DIV2", CLK_P3_DIV2, R9A08G045_CLK_P3, 1, 2),
+ DEF_FIXED("S0", R9A08G045_CLK_S0, CLK_SEL_PLL4, 1, 2),
+ DEF_FIXED("OSC", R9A08G045_OSCCLK, CLK_EXTAL, 1, 1),
+ DEF_FIXED("OSC2", R9A08G045_OSCCLK2, CLK_EXTAL, 1, 3),
+};
+
+static const struct rzg2l_mod_clk r9a08g045_mod_clks[] = {
+ DEF_MOD("gic_gicclk", R9A08G045_GIC600_GICCLK, R9A08G045_CLK_P1, 0x514, 0),
+ DEF_MOD("ia55_clk", R9A08G045_IA55_CLK, R9A08G045_CLK_P1, 0x518, 1),
+ DEF_MOD("dmac_aclk", R9A08G045_DMAC_ACLK, R9A08G045_CLK_P3, 0x52c, 0),
+ DEF_MOD("sdhi0_imclk", R9A08G045_SDHI0_IMCLK, CLK_SD0_DIV4, 0x554, 0),
+ DEF_MOD("sdhi0_imclk2", R9A08G045_SDHI0_IMCLK2, CLK_SD0_DIV4, 0x554, 1),
+ DEF_MOD("sdhi0_clk_hs", R9A08G045_SDHI0_CLK_HS, R9A08G045_CLK_SD0, 0x554, 2),
+ DEF_MOD("sdhi0_aclk", R9A08G045_SDHI0_ACLK, R9A08G045_CLK_P1, 0x554, 3),
+ DEF_MOD("scif0_clk_pck", R9A08G045_SCIF0_CLK_PCK, R9A08G045_CLK_P0, 0x584, 0),
+ DEF_MOD("gpio_hclk", R9A08G045_GPIO_HCLK, R9A08G045_OSCCLK, 0x598, 0),
+};
+
+static const struct rzg2l_reset r9a08g045_resets[] = {
+ DEF_RST(R9A08G045_GIC600_GICRESET_N, 0x814, 0),
+ DEF_RST(R9A08G045_GIC600_DBG_GICRESET_N, 0x814, 1),
+ DEF_RST(R9A08G045_SDHI0_IXRST, 0x854, 0),
+ DEF_RST(R9A08G045_SCIF0_RST_SYSTEM_N, 0x884, 0),
+ DEF_RST(R9A08G045_GPIO_RSTN, 0x898, 0),
+ DEF_RST(R9A08G045_GPIO_PORT_RESETN, 0x898, 1),
+ DEF_RST(R9A08G045_GPIO_SPARE_RESETN, 0x898, 2),
+};
+
+static const unsigned int r9a08g045_crit_mod_clks[] __initconst = {
+ MOD_CLK_BASE + R9A08G045_GIC600_GICCLK,
+ MOD_CLK_BASE + R9A08G045_IA55_CLK,
+ MOD_CLK_BASE + R9A08G045_DMAC_ACLK,
+};
+
+const struct rzg2l_cpg_info r9a08g045_cpg_info = {
+ /* Core Clocks */
+ .core_clks = r9a08g045_core_clks,
+ .num_core_clks = ARRAY_SIZE(r9a08g045_core_clks),
+ .last_dt_core_clk = LAST_DT_CORE_CLK,
+ .num_total_core_clks = MOD_CLK_BASE,
+
+ /* Critical Module Clocks */
+ .crit_mod_clks = r9a08g045_crit_mod_clks,
+ .num_crit_mod_clks = ARRAY_SIZE(r9a08g045_crit_mod_clks),
+
+ /* Module Clocks */
+ .mod_clks = r9a08g045_mod_clks,
+ .num_mod_clks = ARRAY_SIZE(r9a08g045_mod_clks),
+ .num_hw_mod_clks = R9A08G045_VBAT_BCLK + 1,
+
+ /* Resets */
+ .resets = r9a08g045_resets,
+ .num_resets = R9A08G045_VBAT_BRESETN + 1, /* Last reset ID + 1 */
+
+ .has_clk_mon_regs = true,
+};
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 3080e9391f71..bf49b40a3b63 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -1728,6 +1728,12 @@ static const struct of_device_id rzg2l_cpg_match[] = {
.data = &r9a07g054_cpg_info,
},
#endif
+#ifdef CONFIG_CLK_R9A08G045
+ {
+ .compatible = "renesas,r9a08g045-cpg",
+ .data = &r9a08g045_cpg_info,
+ },
+#endif
#ifdef CONFIG_CLK_R9A09G011
{
.compatible = "renesas,r9a09g011-cpg",
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 8312972cc496..7112320f26e2 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -282,6 +282,7 @@ struct rzg2l_cpg_info {
extern const struct rzg2l_cpg_info r9a07g043_cpg_info;
extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
+extern const struct rzg2l_cpg_info r9a08g045_cpg_info;
extern const struct rzg2l_cpg_info r9a09g011_cpg_info;

int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
--
2.39.2