clk: renesas: Add support for R9A07G044 SoC

Define the clock outputs supported by RZ/G2L (R9A07G044) SoC
and bind it with RZ/G2L CPG core.

Based on a patch in the BSP by Binh Nguyen
<binh.nguyen.jz@renesas.com>.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210609153230.6967-10-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 6ec698d..7b45065 100644 (file)
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -32,6 +32,7 @@ config CLK_RENESAS
        select CLK_R8A77995 if ARCH_R8A77995
        select CLK_R8A779A0 if ARCH_R8A779A0
        select CLK_R9A06G032 if ARCH_R9A06G032
+       select CLK_R9A07G044 if ARCH_R9A07G044
        select CLK_SH73A0 if ARCH_SH73A0
 
 if CLK_RENESAS
@@ -156,6 +157,10 @@ config CLK_R9A06G032
        help
          This is a driver for R9A06G032 clocks
 
+config CLK_R9A07G044
+       bool "RZ/G2L 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

diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index a9c2996..5c6c5c7 100644 (file)
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_CLK_R8A77990)            += r8a77990-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A77995)             += r8a77995-cpg-mssr.o
 obj-$(CONFIG_CLK_R8A779A0)             += r8a779a0-cpg-mssr.o
 obj-$(CONFIG_CLK_R9A06G032)            += r9a06g032-clocks.o
+obj-$(CONFIG_CLK_R9A07G044)            += r9a07g044-cpg.o
 obj-$(CONFIG_CLK_SH73A0)               += clk-sh73a0.o
 
 # Family

diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
new file mode 100644 (file)
index 0000000..50b5269
--- /dev/null
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RZ/G2L CPG driver
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/clock/r9a07g044-cpg.h>
+
+#include "renesas-rzg2l-cpg.h"
+
+enum clk_ids {
+       /* Core Clock Outputs exported to DT */
+       LAST_DT_CORE_CLK = R9A07G044_OSCCLK,
+
+       /* External Input Clocks */
+       CLK_EXTAL,
+
+       /* Internal Core Clocks */
+       CLK_OSC_DIV1000,
+       CLK_PLL1,
+       CLK_PLL2,
+       CLK_PLL2_DIV2,
+       CLK_PLL2_DIV16,
+       CLK_PLL2_DIV20,
+       CLK_PLL3,
+       CLK_PLL3_DIV2,
+       CLK_PLL3_DIV4,
+       CLK_PLL3_DIV8,
+       CLK_PLL4,
+       CLK_PLL5,
+       CLK_PLL5_DIV2,
+       CLK_PLL6,
+
+       /* Module Clocks */
+       MOD_CLK_BASE,
+};
+
+/* Divider tables */
+static const struct clk_div_table dtable_3b[] = {
+       {0, 1},
+       {1, 2},
+       {2, 4},
+       {3, 8},
+       {4, 32},
+};
+
+static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
+       /* External Clock Inputs */
+       DEF_INPUT("extal", CLK_EXTAL),
+
+       /* Internal Core Clocks */
+       DEF_FIXED(".osc", R9A07G044_OSCCLK, CLK_EXTAL, 1, 1),
+       DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
+       DEF_SAMPLL(".pll1", CLK_PLL1, CLK_EXTAL, PLL146_CONF(0)),
+       DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 133, 2),
+       DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 133, 2),
+
+       DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
+       DEF_FIXED(".pll2_div16", CLK_PLL2_DIV16, CLK_PLL2, 1, 16),
+       DEF_FIXED(".pll2_div20", CLK_PLL2_DIV20, CLK_PLL2, 1, 20),
+
+       DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
+       DEF_FIXED(".pll3_div4", CLK_PLL3_DIV4, CLK_PLL3, 1, 4),
+       DEF_FIXED(".pll3_div8", CLK_PLL3_DIV8, CLK_PLL3, 1, 8),
+
+       /* Core output clk */
+       DEF_FIXED("I", R9A07G044_CLK_I, CLK_PLL1, 1, 1),
+       DEF_DIV("P0", R9A07G044_CLK_P0, CLK_PLL2_DIV16, DIVPL2A,
+               dtable_3b, CLK_DIVIDER_HIWORD_MASK),
+       DEF_FIXED("TSU", R9A07G044_CLK_TSU, CLK_PLL2_DIV20, 1, 1),
+       DEF_DIV("P1", R9A07G044_CLK_P1, CLK_PLL3_DIV8,
+               DIVPL3B, dtable_3b, CLK_DIVIDER_HIWORD_MASK),
+};
+
+static struct rzg2l_mod_clk r9a07g044_mod_clks[] = {
+       DEF_MOD("gic",          R9A07G044_CLK_GIC600,
+                               R9A07G044_CLK_P1,
+                               0x514, BIT(0), (BIT(0) | BIT(1))),
+       DEF_MOD("ia55",         R9A07G044_CLK_IA55,
+                               R9A07G044_CLK_P1,
+                               0x518, (BIT(0) | BIT(1)), BIT(0)),
+       DEF_MOD("scif0",        R9A07G044_CLK_SCIF0,
+                               R9A07G044_CLK_P0,
+                               0x584, BIT(0), BIT(0)),
+       DEF_MOD("scif1",        R9A07G044_CLK_SCIF1,
+                               R9A07G044_CLK_P0,
+                               0x584, BIT(1), BIT(1)),
+       DEF_MOD("scif2",        R9A07G044_CLK_SCIF2,
+                               R9A07G044_CLK_P0,
+                               0x584, BIT(2), BIT(2)),
+       DEF_MOD("scif3",        R9A07G044_CLK_SCIF3,
+                               R9A07G044_CLK_P0,
+                               0x584, BIT(3), BIT(3)),
+       DEF_MOD("scif4",        R9A07G044_CLK_SCIF4,
+                               R9A07G044_CLK_P0,
+                               0x584, BIT(4), BIT(4)),
+       DEF_MOD("sci0",         R9A07G044_CLK_SCI0,
+                               R9A07G044_CLK_P0,
+                               0x588, BIT(0), BIT(0)),
+};
+
+static const unsigned int r9a07g044_crit_mod_clks[] __initconst = {
+       MOD_CLK_BASE + R9A07G044_CLK_GIC600,
+};
+
+const struct rzg2l_cpg_info r9a07g044_cpg_info = {
+       /* Core Clocks */
+       .core_clks = r9a07g044_core_clks,
+       .num_core_clks = ARRAY_SIZE(r9a07g044_core_clks),
+       .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 = r9a07g044_mod_clks,
+       .num_mod_clks = ARRAY_SIZE(r9a07g044_mod_clks),
+       .num_hw_mod_clks = R9A07G044_CLK_MIPI_DSI_PIN + 1,
+};

diff --git a/drivers/clk/renesas/renesas-rzg2l-cpg.c b/drivers/clk/renesas/renesas-rzg2l-cpg.c
index cc2842d..5009b9e 100644 (file)
--- a/drivers/clk/renesas/renesas-rzg2l-cpg.c
+++ b/drivers/clk/renesas/renesas-rzg2l-cpg.c
@@ -723,6 +723,12 @@ static int __init rzg2l_cpg_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id rzg2l_cpg_match[] = {
+#ifdef CONFIG_CLK_R9A07G044
+       {
+               .compatible = "renesas,r9a07g044-cpg",
+               .data = &r9a07g044_cpg_info,
+       },
+#endif
        { /* sentinel */ }
 };
 

diff --git a/drivers/clk/renesas/renesas-rzg2l-cpg.h b/drivers/clk/renesas/renesas-rzg2l-cpg.h
index 8ff0047..3948bdd 100644 (file)
--- a/drivers/clk/renesas/renesas-rzg2l-cpg.h
+++ b/drivers/clk/renesas/renesas-rzg2l-cpg.h
@@ -131,4 +131,6 @@ struct rzg2l_cpg_info {
        unsigned int num_crit_mod_clks;
 };
 
+extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
+
 #endif