clk: renesas: cpg-mssr: Add R8A7743 support

Add RZ/G1M (R8A7743) Clock Pulse Generator / Module Standby and Software
Reset support, using the CPG/MSSR driver core and the common R-Car Gen2
(and RZ/G) code.

Based on the proof-of-concept R8A7791 CPG/MSSR patch by Geert
Uytterhoeven <geert+renesas@glider.be>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt
index 394d725..c0c4d77 100644 (file)
--- a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt
+++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt
@@ -13,6 +13,7 @@ They provide the following functionalities:
 
 Required Properties:
   - compatible: Must be one of:
+      - "renesas,r8a7743-cpg-mssr" for the r8a7743 SoC (RZ/G1M)
       - "renesas,r8a7795-cpg-mssr" for the r8a7795 SoC (R-Car H3)
       - "renesas,r8a7796-cpg-mssr" for the r8a7796 SoC (R-Car M3-W)
 
@@ -22,8 +23,9 @@ Required Properties:
   - clocks: References to external parent clocks, one entry for each entry in
     clock-names
   - clock-names: List of external parent clock names. Valid names are:
-      - "extal" (r8a7795, r8a7796)
+      - "extal" (r8a7743, r8a7795, r8a7796)
       - "extalr" (r8a7795, r8a7796)
+      - "usb_extal" (r8a7743)
 
   - #clock-cells: Must be 2
       - For CPG core clocks, the two clock specifier cells must be "CPG_CORE"

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 41a12d3..e1cd3bf 100644 (file)
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -1,5 +1,6 @@
 config CLK_RENESAS_CPG_MSSR
        bool
+       default y if ARCH_R8A7743
        default y if ARCH_R8A7795
        default y if ARCH_R8A7796
 

diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index 90dd0db..81082bd 100644 (file)
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -2,6 +2,7 @@ obj-$(CONFIG_ARCH_EMEV2)                += clk-emev2.o
 obj-$(CONFIG_ARCH_R7S72100)            += clk-rz.o
 obj-$(CONFIG_ARCH_R8A73A4)             += clk-r8a73a4.o clk-div6.o
 obj-$(CONFIG_ARCH_R8A7740)             += clk-r8a7740.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7743)             += r8a7743-cpg-mssr.o rcar-gen2-cpg.o
 obj-$(CONFIG_ARCH_R8A7778)             += clk-r8a7778.o
 obj-$(CONFIG_ARCH_R8A7779)             += clk-r8a7779.o
 obj-$(CONFIG_ARCH_R8A7790)             += clk-rcar-gen2.o clk-div6.o

diff --git a/drivers/clk/renesas/r8a7743-cpg-mssr.c b/drivers/clk/renesas/r8a7743-cpg-mssr.c
new file mode 100644 (file)
index 0000000..6dc0b30
--- /dev/null
+++ b/drivers/clk/renesas/r8a7743-cpg-mssr.c
@@ -0,0 +1,270 @@
+/*
+ * r8a7743 Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2016 Cogent Embedded Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation; of the License.
+ */
+
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/soc/renesas/rcar-rst.h>
+
+#include <dt-bindings/clock/r8a7743-cpg-mssr.h>
+
+#include "renesas-cpg-mssr.h"
+#include "rcar-gen2-cpg.h"
+
+enum clk_ids {
+       /* Core Clock Outputs exported to DT */
+       LAST_DT_CORE_CLK = R8A7743_CLK_OSC,
+
+       /* External Input Clocks */
+       CLK_EXTAL,
+       CLK_USB_EXTAL,
+
+       /* Internal Core Clocks */
+       CLK_MAIN,
+       CLK_PLL0,
+       CLK_PLL1,
+       CLK_PLL3,
+       CLK_PLL1_DIV2,
+
+       /* Module Clocks */
+       MOD_CLK_BASE
+};
+
+static const struct cpg_core_clk r8a7743_core_clks[] __initconst = {
+       /* External Clock Inputs */
+       DEF_INPUT("extal",      CLK_EXTAL),
+       DEF_INPUT("usb_extal",  CLK_USB_EXTAL),
+
+       /* Internal Core Clocks */
+       DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
+       DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
+       DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
+       DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
+
+       DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
+
+       /* Core Clock Outputs */
+       DEF_BASE("z",    R8A7743_CLK_Z,    CLK_TYPE_GEN2_Z,     CLK_PLL0),
+       DEF_BASE("lb",   R8A7743_CLK_LB,   CLK_TYPE_GEN2_LB,    CLK_PLL1),
+       DEF_BASE("sdh",  R8A7743_CLK_SDH,  CLK_TYPE_GEN2_SDH,   CLK_PLL1),
+       DEF_BASE("sd0",  R8A7743_CLK_SD0,  CLK_TYPE_GEN2_SD0,   CLK_PLL1),
+       DEF_BASE("qspi", R8A7743_CLK_QSPI, CLK_TYPE_GEN2_QSPI,  CLK_PLL1_DIV2),
+       DEF_BASE("rcan", R8A7743_CLK_RCAN, CLK_TYPE_GEN2_RCAN,  CLK_USB_EXTAL),
+
+       DEF_FIXED("zg",    R8A7743_CLK_ZG,      CLK_PLL1,           3, 1),
+       DEF_FIXED("zx",    R8A7743_CLK_ZX,      CLK_PLL1,           3, 1),
+       DEF_FIXED("zs",    R8A7743_CLK_ZS,      CLK_PLL1,           6, 1),
+       DEF_FIXED("hp",    R8A7743_CLK_HP,      CLK_PLL1,          12, 1),
+       DEF_FIXED("b",     R8A7743_CLK_B,       CLK_PLL1,          12, 1),
+       DEF_FIXED("p",     R8A7743_CLK_P,       CLK_PLL1,          24, 1),
+       DEF_FIXED("cl",    R8A7743_CLK_CL,      CLK_PLL1,          48, 1),
+       DEF_FIXED("m2",    R8A7743_CLK_M2,      CLK_PLL1,           8, 1),
+       DEF_FIXED("zb3",   R8A7743_CLK_ZB3,     CLK_PLL3,           4, 1),
+       DEF_FIXED("zb3d2", R8A7743_CLK_ZB3D2,   CLK_PLL3,           8, 1),
+       DEF_FIXED("ddr",   R8A7743_CLK_DDR,     CLK_PLL3,           8, 1),
+       DEF_FIXED("mp",    R8A7743_CLK_MP,      CLK_PLL1_DIV2,     15, 1),
+       DEF_FIXED("cp",    R8A7743_CLK_CP,      CLK_EXTAL,          2, 1),
+       DEF_FIXED("r",     R8A7743_CLK_R,       CLK_PLL1,       49152, 1),
+       DEF_FIXED("osc",   R8A7743_CLK_OSC,     CLK_PLL1,       12288, 1),
+
+       DEF_DIV6P1("sd2",  R8A7743_CLK_SD2,     CLK_PLL1_DIV2,  0x078),
+       DEF_DIV6P1("sd3",  R8A7743_CLK_SD3,     CLK_PLL1_DIV2,  0x26c),
+       DEF_DIV6P1("mmc0", R8A7743_CLK_MMC0,    CLK_PLL1_DIV2,  0x240),
+};
+
+static const struct mssr_mod_clk r8a7743_mod_clks[] __initconst = {
+       DEF_MOD("msiof0",                  0,   R8A7743_CLK_MP),
+       DEF_MOD("vcp0",                  101,   R8A7743_CLK_ZS),
+       DEF_MOD("vpc0",                  103,   R8A7743_CLK_ZS),
+       DEF_MOD("tmu1",                  111,   R8A7743_CLK_P),
+       DEF_MOD("3dg",                   112,   R8A7743_CLK_ZG),
+       DEF_MOD("2d-dmac",               115,   R8A7743_CLK_ZS),
+       DEF_MOD("fdp1-1",                118,   R8A7743_CLK_ZS),
+       DEF_MOD("fdp1-0",                119,   R8A7743_CLK_ZS),
+       DEF_MOD("tmu3",                  121,   R8A7743_CLK_P),
+       DEF_MOD("tmu2",                  122,   R8A7743_CLK_P),
+       DEF_MOD("cmt0",                  124,   R8A7743_CLK_R),
+       DEF_MOD("tmu0",                  125,   R8A7743_CLK_CP),
+       DEF_MOD("vsp1du1",               127,   R8A7743_CLK_ZS),
+       DEF_MOD("vsp1du0",               128,   R8A7743_CLK_ZS),
+       DEF_MOD("vsp1-sy",               131,   R8A7743_CLK_ZS),
+       DEF_MOD("scifa2",                202,   R8A7743_CLK_MP),
+       DEF_MOD("scifa1",                203,   R8A7743_CLK_MP),
+       DEF_MOD("scifa0",                204,   R8A7743_CLK_MP),
+       DEF_MOD("msiof2",                205,   R8A7743_CLK_MP),
+       DEF_MOD("scifb0",                206,   R8A7743_CLK_MP),
+       DEF_MOD("scifb1",                207,   R8A7743_CLK_MP),
+       DEF_MOD("msiof1",                208,   R8A7743_CLK_MP),
+       DEF_MOD("scifb2",                216,   R8A7743_CLK_MP),
+       DEF_MOD("sys-dmac1",             218,   R8A7743_CLK_ZS),
+       DEF_MOD("sys-dmac0",             219,   R8A7743_CLK_ZS),
+       DEF_MOD("tpu0",                  304,   R8A7743_CLK_CP),
+       DEF_MOD("sdhi3",                 311,   R8A7743_CLK_SD3),
+       DEF_MOD("sdhi2",                 312,   R8A7743_CLK_SD2),
+       DEF_MOD("sdhi0",                 314,   R8A7743_CLK_SD0),
+       DEF_MOD("mmcif0",                315,   R8A7743_CLK_MMC0),
+       DEF_MOD("iic0",                  318,   R8A7743_CLK_HP),
+       DEF_MOD("pciec",                 319,   R8A7743_CLK_MP),
+       DEF_MOD("iic1",                  323,   R8A7743_CLK_HP),
+       DEF_MOD("usb3.0",                328,   R8A7743_CLK_MP),
+       DEF_MOD("cmt1",                  329,   R8A7743_CLK_R),
+       DEF_MOD("usbhs-dmac0",           330,   R8A7743_CLK_HP),
+       DEF_MOD("usbhs-dmac1",           331,   R8A7743_CLK_HP),
+       DEF_MOD("irqc",                  407,   R8A7743_CLK_CP),
+       DEF_MOD("intc-sys",              408,   R8A7743_CLK_ZS),
+       DEF_MOD("audio-dmac1",           501,   R8A7743_CLK_HP),
+       DEF_MOD("audio-dmac0",           502,   R8A7743_CLK_HP),
+       DEF_MOD("thermal",               522,   CLK_EXTAL),
+       DEF_MOD("pwm",                   523,   R8A7743_CLK_P),
+       DEF_MOD("usb-ehci",              703,   R8A7743_CLK_MP),
+       DEF_MOD("usbhs",                 704,   R8A7743_CLK_HP),
+       DEF_MOD("hscif2",                713,   R8A7743_CLK_ZS),
+       DEF_MOD("scif5",                 714,   R8A7743_CLK_P),
+       DEF_MOD("scif4",                 715,   R8A7743_CLK_P),
+       DEF_MOD("hscif1",                716,   R8A7743_CLK_ZS),
+       DEF_MOD("hscif0",                717,   R8A7743_CLK_ZS),
+       DEF_MOD("scif3",                 718,   R8A7743_CLK_P),
+       DEF_MOD("scif2",                 719,   R8A7743_CLK_P),
+       DEF_MOD("scif1",                 720,   R8A7743_CLK_P),
+       DEF_MOD("scif0",                 721,   R8A7743_CLK_P),
+       DEF_MOD("du1",                   723,   R8A7743_CLK_ZX),
+       DEF_MOD("du0",                   724,   R8A7743_CLK_ZX),
+       DEF_MOD("lvds0",                 726,   R8A7743_CLK_ZX),
+       DEF_MOD("ipmmu-sgx",             800,   R8A7743_CLK_ZX),
+       DEF_MOD("vin2",                  809,   R8A7743_CLK_ZG),
+       DEF_MOD("vin1",                  810,   R8A7743_CLK_ZG),
+       DEF_MOD("vin0",                  811,   R8A7743_CLK_ZG),
+       DEF_MOD("etheravb",              812,   R8A7743_CLK_HP),
+       DEF_MOD("ether",                 813,   R8A7743_CLK_P),
+       DEF_MOD("sata1",                 814,   R8A7743_CLK_ZS),
+       DEF_MOD("sata0",                 815,   R8A7743_CLK_ZS),
+       DEF_MOD("gpio7",                 904,   R8A7743_CLK_CP),
+       DEF_MOD("gpio6",                 905,   R8A7743_CLK_CP),
+       DEF_MOD("gpio5",                 907,   R8A7743_CLK_CP),
+       DEF_MOD("gpio4",                 908,   R8A7743_CLK_CP),
+       DEF_MOD("gpio3",                 909,   R8A7743_CLK_CP),
+       DEF_MOD("gpio2",                 910,   R8A7743_CLK_CP),
+       DEF_MOD("gpio1",                 911,   R8A7743_CLK_CP),
+       DEF_MOD("gpio0",                 912,   R8A7743_CLK_CP),
+       DEF_MOD("can1",                  915,   R8A7743_CLK_P),
+       DEF_MOD("can0",                  916,   R8A7743_CLK_P),
+       DEF_MOD("qspi_mod",              917,   R8A7743_CLK_QSPI),
+       DEF_MOD("i2c5",                  925,   R8A7743_CLK_HP),
+       DEF_MOD("iicdvfs",               926,   R8A7743_CLK_CP),
+       DEF_MOD("i2c4",                  927,   R8A7743_CLK_HP),
+       DEF_MOD("i2c3",                  928,   R8A7743_CLK_HP),
+       DEF_MOD("i2c2",                  929,   R8A7743_CLK_HP),
+       DEF_MOD("i2c1",                  930,   R8A7743_CLK_HP),
+       DEF_MOD("i2c0",                  931,   R8A7743_CLK_HP),
+       DEF_MOD("ssi-all",              1005,   R8A7743_CLK_P),
+       DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
+       DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
+       DEF_MOD("scu-all",              1017,   R8A7743_CLK_P),
+       DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
+       DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
+       DEF_MOD("scifa3",               1106,   R8A7743_CLK_MP),
+       DEF_MOD("scifa4",               1107,   R8A7743_CLK_MP),
+       DEF_MOD("scifa5",               1108,   R8A7743_CLK_MP),
+};
+
+static const unsigned int r8a7743_crit_mod_clks[] __initconst = {
+       MOD_CLK_ID(408),        /* INTC-SYS (GIC) */
+};
+
+/*
+ * CPG Clock Data
+ */
+
+/*
+ *    MD       EXTAL           PLL0    PLL1    PLL3
+ * 14 13 19    (MHz)           *1      *1
+ *---------------------------------------------------
+ * 0  0  0     15              x172/2  x208/2  x106
+ * 0  0  1     15              x172/2  x208/2  x88
+ * 0  1  0     20              x130/2  x156/2  x80
+ * 0  1  1     20              x130/2  x156/2  x66
+ * 1  0  0     26 / 2          x200/2  x240/2  x122
+ * 1  0  1     26 / 2          x200/2  x240/2  x102
+ * 1  1  0     30 / 2          x172/2  x208/2  x106
+ * 1  1  1     30 / 2          x172/2  x208/2  x88
+ *
+ * *1 :        Table 7.5a indicates VCO output (PLLx = VCO/2)
+ */
+#define CPG_PLL_CONFIG_INDEX(md)       ((((md) & BIT(14)) >> 12) | \
+                                        (((md) & BIT(13)) >> 12) | \
+                                        (((md) & BIT(19)) >> 19))
+
+static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
+       /* EXTAL div    PLL1 mult       PLL3 mult */
+       { 1,            208,            106,    },
+       { 1,            208,            88,     },
+       { 1,            156,            80,     },
+       { 1,            156,            66,     },
+       { 2,            240,            122,    },
+       { 2,            240,            102,    },
+       { 2,            208,            106,    },
+       { 2,            208,            88,     },
+};
+
+static int __init r8a7743_cpg_mssr_init(struct device *dev)
+{
+       const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
+       u32 cpg_mode;
+       int error;
+
+       error = rcar_rst_read_mode_pins(&cpg_mode);
+       if (error)
+               return error;
+
+       cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
+
+       return rcar_gen2_cpg_init(cpg_pll_config, 2, cpg_mode);
+}
+
+const struct cpg_mssr_info r8a7743_cpg_mssr_info __initconst = {
+       /* Core Clocks */
+       .core_clks = r8a7743_core_clks,
+       .num_core_clks = ARRAY_SIZE(r8a7743_core_clks),
+       .last_dt_core_clk = LAST_DT_CORE_CLK,
+       .num_total_core_clks = MOD_CLK_BASE,
+
+       /* Module Clocks */
+       .mod_clks = r8a7743_mod_clks,
+       .num_mod_clks = ARRAY_SIZE(r8a7743_mod_clks),
+       .num_hw_mod_clks = 12 * 32,
+
+       /* Critical Module Clocks */
+       .crit_mod_clks = r8a7743_crit_mod_clks,
+       .num_crit_mod_clks = ARRAY_SIZE(r8a7743_crit_mod_clks),
+
+       /* Callbacks */
+       .init = r8a7743_cpg_mssr_init,
+       .cpg_clk_register = rcar_gen2_cpg_clk_register,
+};

diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c
index bdd46fb..e87504c 100644 (file)
--- a/drivers/clk/renesas/renesas-cpg-mssr.c
+++ b/drivers/clk/renesas/renesas-cpg-mssr.c
@@ -502,6 +502,12 @@ static int __init cpg_mssr_add_clk_domain(struct device *dev,
 }
 
 static const struct of_device_id cpg_mssr_match[] = {
+#ifdef CONFIG_ARCH_R8A7743
+       {
+               .compatible = "renesas,r8a7743-cpg-mssr",
+               .data = &r8a7743_cpg_mssr_info,
+       },
+#endif
 #ifdef CONFIG_ARCH_R8A7795
        {
                .compatible = "renesas,r8a7795-cpg-mssr",

diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h
index ee7edfa..7a50639 100644 (file)
--- a/drivers/clk/renesas/renesas-cpg-mssr.h
+++ b/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -130,6 +130,7 @@ struct cpg_mssr_info {
                                        struct clk **clks, void __iomem *base);
 };
 
+extern const struct cpg_mssr_info r8a7743_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a7795_cpg_mssr_info;
 extern const struct cpg_mssr_info r8a7796_cpg_mssr_info;
 #endif