diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/shmobile.txt | 4 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt | 7 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt | 1 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt | 1 | ||||
| -rw-r--r-- | arch/arm64/Kconfig.platforms | 6 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/renesas/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/renesas/r8a7795.dtsi | 26 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts | 50 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/renesas/r8a7796.dtsi | 138 | ||||
| -rw-r--r-- | drivers/clk/renesas/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/clk/renesas/Makefile | 4 | ||||
| -rw-r--r-- | drivers/clk/renesas/r8a7795-cpg-mssr.c | 374 | ||||
| -rw-r--r-- | drivers/clk/renesas/r8a7796-cpg-mssr.c | 192 | ||||
| -rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.c | 359 | ||||
| -rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.h | 43 | ||||
| -rw-r--r-- | drivers/clk/renesas/renesas-cpg-mssr.c | 6 | ||||
| -rw-r--r-- | drivers/clk/renesas/renesas-cpg-mssr.h | 1 | ||||
| -rw-r--r-- | include/dt-bindings/clock/r8a7796-cpg-mssr.h | 69 |
18 files changed, 924 insertions, 360 deletions
diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt index 9cf67e4..d5ed554 100644 --- a/Documentation/devicetree/bindings/arm/shmobile.txt +++ b/Documentation/devicetree/bindings/arm/shmobile.txt @@ -29,6 +29,8 @@ SoCs: compatible = "renesas,r8a7794" - R-Car H3 (R8A77950) compatible = "renesas,r8a7795" + - R-Car M3-W (R8A77960) + compatible = "renesas,r8a7796" Boards: @@ -61,5 +63,7 @@ Boards: compatible = "renesas,porter", "renesas,r8a7791" - Salvator-X (RTP0RC7795SIPB0010S) compatible = "renesas,salvator-x", "renesas,r8a7795"; + - Salvator-X + compatible = "renesas,salvator-x", "renesas,r8a7796"; - SILK (RTP0RC7794LCB00011S) compatible = "renesas,silk", "renesas,r8a7794" diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt index fefb802..394d725 100644 --- a/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt @@ -13,7 +13,8 @@ They provide the following functionalities: Required Properties: - compatible: Must be one of: - - "renesas,r8a7795-cpg-mssr" for the r8a7795 SoC + - "renesas,r8a7795-cpg-mssr" for the r8a7795 SoC (R-Car H3) + - "renesas,r8a7796-cpg-mssr" for the r8a7796 SoC (R-Car M3-W) - reg: Base address and length of the memory resource used by the CPG/MSSR block @@ -21,8 +22,8 @@ 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) - - "extalr" (r8a7795) + - "extal" (r8a7795, r8a7796) + - "extalr" (r8a7795, r8a7796) - #clock-cells: Must be 2 - For CPG core clocks, the two clock specifier cells must be "CPG_CORE" diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt index 16ed181..da578eb 100644 --- a/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt @@ -17,6 +17,7 @@ Required Properties: - "renesas,r8a7779-mstp-clocks" for R8A7779 (R-Car H1) MSTP gate clocks - "renesas,r8a7790-mstp-clocks" for R8A7790 (R-Car H2) MSTP gate clocks - "renesas,r8a7791-mstp-clocks" for R8A7791 (R-Car M2-W) MSTP gate clocks + - "renesas,r8a7792-mstp-clocks" for R8A7792 (R-Car V2H) MSTP gate clocks - "renesas,r8a7793-mstp-clocks" for R8A7793 (R-Car M2-N) MSTP gate clocks - "renesas,r8a7794-mstp-clocks" for R8A7794 (R-Car E2) MSTP gate clocks - "renesas,sh73a0-mstp-clocks" for SH73A0 (SH-MobileAG5) MSTP gate clocks diff --git a/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt index 2a9a8ed..f8c05bb 100644 --- a/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt +++ b/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt @@ -10,6 +10,7 @@ Required Properties: - compatible: Must be one of - "renesas,r8a7790-cpg-clocks" for the r8a7790 CPG - "renesas,r8a7791-cpg-clocks" for the r8a7791 CPG + - "renesas,r8a7792-cpg-clocks" for the r8a7792 CPG - "renesas,r8a7793-cpg-clocks" for the r8a7793 CPG - "renesas,r8a7794-cpg-clocks" for the r8a7794 CPG and "renesas,rcar-gen2-cpg-clocks" as a fallback. diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms index 7ef1d05..2182fd5 100644 --- a/arch/arm64/Kconfig.platforms +++ b/arch/arm64/Kconfig.platforms @@ -121,6 +121,12 @@ config ARCH_R8A7795 help This enables support for the Renesas R-Car H3 SoC. +config ARCH_R8A7796 + bool "Renesas R-Car M3-W SoC Platform" + depends on ARCH_RENESAS + help + This enables support for the Renesas R-Car M3-W SoC. + config ARCH_STRATIX10 bool "Altera's Stratix 10 SoCFPGA Family" help diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile index 9ce1890..17139f7 100644 --- a/arch/arm64/boot/dts/renesas/Makefile +++ b/arch/arm64/boot/dts/renesas/Makefile @@ -1,4 +1,5 @@ dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-salvator-x.dtb +dtb-$(CONFIG_ARCH_R8A7796) += r8a7796-salvator-x.dtb always := $(dtb-y) clean-files := *.dtb diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi index 04eb0bc..b902356 100644 --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi @@ -53,6 +53,7 @@ next-level-cache = <&L2_CA57>; enable-method = "psci"; }; + a57_2: cpu@2 { compatible = "arm,cortex-a57","arm,armv8"; reg = <0x2>; @@ -61,6 +62,7 @@ next-level-cache = <&L2_CA57>; enable-method = "psci"; }; + a57_3: cpu@3 { compatible = "arm,cortex-a57","arm,armv8"; reg = <0x3>; @@ -581,6 +583,30 @@ status = "disabled"; }; + canfd: can@e66c0000 { + compatible = "renesas,r8a7795-canfd", + "renesas,rcar-gen3-canfd"; + reg = <0 0xe66c0000 0 0x8000>; + interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 914>, + <&cpg CPG_CORE R8A7795_CLK_CANFD>, + <&can_clk>; + clock-names = "fck", "canfd", "can_clk"; + assigned-clocks = <&cpg CPG_CORE R8A7795_CLK_CANFD>; + assigned-clock-rates = <40000000>; + power-domains = <&sysc R8A7795_PD_ALWAYS_ON>; + status = "disabled"; + + channel0 { + status = "disabled"; + }; + + channel1 { + status = "disabled"; + }; + }; + hscif0: serial@e6540000 { compatible = "renesas,hscif-r8a7795", "renesas,rcar-gen3-hscif", diff --git a/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts new file mode 100644 index 0000000..e72be38 --- /dev/null +++ b/arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts @@ -0,0 +1,50 @@ +/* + * Device Tree Source for the Salvator-X board + * + * Copyright (C) 2016 Renesas Electronics Corp. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +/dts-v1/; +#include "r8a7796.dtsi" + +/ { + model = "Renesas Salvator-X board based on r8a7796"; + compatible = "renesas,salvator-x", "renesas,r8a7796"; + + aliases { + serial0 = &scif2; + }; + + chosen { + bootargs = "ignore_loglevel"; + stdout-path = "serial0:115200n8"; + }; + + memory@48000000 { + device_type = "memory"; + /* first 128MB is reserved for secure area. */ + reg = <0x0 0x48000000 0x0 0x78000000>; + }; +}; + +&extal_clk { + clock-frequency = <16666666>; +}; + +&scif2 { + status = "okay"; +}; + +&scif_clk { + clock-frequency = <14745600>; + status = "okay"; +}; + +&wdt0 { + timeout-sec = <60>; + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi new file mode 100644 index 0000000..1edf824 --- /dev/null +++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi @@ -0,0 +1,138 @@ +/* + * Device Tree Source for the r8a7796 SoC + * + * Copyright (C) 2016 Renesas Electronics Corp. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <dt-bindings/clock/r8a7796-cpg-mssr.h> +#include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/power/r8a7796-sysc.h> + +/ { + compatible = "renesas,r8a7796"; + #address-cells = <2>; + #size-cells = <2>; + + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + /* 1 core only at this point */ + a57_0: cpu@0 { + compatible = "arm,cortex-a57", "arm,armv8"; + reg = <0x0>; + device_type = "cpu"; + power-domains = <&sysc R8A7796_PD_CA57_CPU0>; + next-level-cache = <&L2_CA57>; + enable-method = "psci"; + }; + + L2_CA57: cache-controller@0 { + compatible = "cache"; + reg = <0>; + power-domains = <&sysc R8A7796_PD_CA57_SCU>; + cache-unified; + cache-level = <2>; + }; + }; + + extal_clk: extal { + compatible = "fixed-clock"; + #clock-cells = <0>; + /* This value must be overridden by the board */ + clock-frequency = <0>; + }; + + extalr_clk: extalr { + compatible = "fixed-clock"; + #clock-cells = <0>; + /* This value must be overridden by the board */ + clock-frequency = <0>; + }; + + /* External SCIF clock - to be overridden by boards that provide it */ + scif_clk: scif { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + + soc { + compatible = "simple-bus"; + interrupt-parent = <&gic>; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + gic: interrupt-controller@f1010000 { + compatible = "arm,gic-400"; + #interrupt-cells = <3>; + #address-cells = <0>; + interrupt-controller; + reg = <0x0 0xf1010000 0 0x1000>, + <0x0 0xf1020000 0 0x20000>, + <0x0 0xf1040000 0 0x20000>, + <0x0 0xf1060000 0 0x20000>; + interrupts = <GIC_PPI 9 + (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_HIGH)>; + }; + + timer { + compatible = "arm,armv8-timer"; + interrupts = <GIC_PPI 13 + (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 14 + (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 11 + (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 10 + (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>; + }; + + wdt0: watchdog@e6020000 { + compatible = "renesas,r8a7796-wdt", + "renesas,rcar-gen3-wdt"; + reg = <0 0xe6020000 0 0x0c>; + clocks = <&cpg CPG_MOD 402>; + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>; + status = "disabled"; + }; + + cpg: clock-controller@e6150000 { + compatible = "renesas,r8a7796-cpg-mssr"; + reg = <0 0xe6150000 0 0x1000>; + clocks = <&extal_clk>, <&extalr_clk>; + clock-names = "extal", "extalr"; + #clock-cells = <2>; + #power-domain-cells = <0>; + }; + + sysc: system-controller@e6180000 { + compatible = "renesas,r8a7796-sysc"; + reg = <0 0xe6180000 0 0x0400>; + #power-domain-cells = <1>; + }; + + scif2: serial@e6e88000 { + compatible = "renesas,scif-r8a7796", + "renesas,rcar-gen3-scif", "renesas,scif"; + reg = <0 0xe6e88000 0 64>; + interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 310>, + <&cpg CPG_CORE R8A7796_CLK_S3D1>, + <&scif_clk>; + clock-names = "fck", "brg_int", "scif_clk"; + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>; + status = "disabled"; + }; + }; +}; diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig index 2115ce4..41a12d3 100644 --- a/drivers/clk/renesas/Kconfig +++ b/drivers/clk/renesas/Kconfig @@ -1,6 +1,7 @@ config CLK_RENESAS_CPG_MSSR bool default y if ARCH_R8A7795 + default y if ARCH_R8A7796 config CLK_RENESAS_CPG_MSTP bool @@ -11,6 +12,7 @@ config CLK_RENESAS_CPG_MSTP default y if ARCH_R8A7779 default y if ARCH_R8A7790 default y if ARCH_R8A7791 + default y if ARCH_R8A7792 default y if ARCH_R8A7793 default y if ARCH_R8A7794 default y if ARCH_SH73A0 diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile index ead8bb8..90dd0db 100644 --- a/drivers/clk/renesas/Makefile +++ b/drivers/clk/renesas/Makefile @@ -6,9 +6,11 @@ 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 obj-$(CONFIG_ARCH_R8A7791) += clk-rcar-gen2.o clk-div6.o +obj-$(CONFIG_ARCH_R8A7792) += clk-rcar-gen2.o clk-div6.o obj-$(CONFIG_ARCH_R8A7793) += clk-rcar-gen2.o clk-div6.o obj-$(CONFIG_ARCH_R8A7794) += clk-rcar-gen2.o clk-div6.o -obj-$(CONFIG_ARCH_R8A7795) += r8a7795-cpg-mssr.o +obj-$(CONFIG_ARCH_R8A7795) += r8a7795-cpg-mssr.o rcar-gen3-cpg.o +obj-$(CONFIG_ARCH_R8A7796) += r8a7796-cpg-mssr.o rcar-gen3-cpg.o obj-$(CONFIG_ARCH_SH73A0) += clk-sh73a0.o clk-div6.o obj-$(CONFIG_CLK_RENESAS_CPG_MSSR) += renesas-cpg-mssr.o clk-div6.o diff --git a/drivers/clk/renesas/r8a7795-cpg-mssr.c b/drivers/clk/renesas/r8a7795-cpg-mssr.c index ca5519c..d359c92 100644 --- a/drivers/clk/renesas/r8a7795-cpg-mssr.c +++ b/drivers/clk/renesas/r8a7795-cpg-mssr.c @@ -12,22 +12,14 @@ * the Free Software Foundation; version 2 of the License. */ -#include <linux/bug.h> -#include <linux/clk.h> -#include <linux/clk-provider.h> #include <linux/device.h> -#include <linux/err.h> #include <linux/init.h> -#include <linux/io.h> #include <linux/kernel.h> -#include <linux/of.h> -#include <linux/slab.h> #include <dt-bindings/clock/r8a7795-cpg-mssr.h> #include "renesas-cpg-mssr.h" - -#define CPG_RCKCR 0x240 +#include "rcar-gen3-cpg.h" enum clk_ids { /* Core Clock Outputs exported to DT */ @@ -58,20 +50,6 @@ enum clk_ids { MOD_CLK_BASE }; -enum r8a7795_clk_types { - CLK_TYPE_GEN3_MAIN = CLK_TYPE_CUSTOM, - CLK_TYPE_GEN3_PLL0, - CLK_TYPE_GEN3_PLL1, - CLK_TYPE_GEN3_PLL2, - CLK_TYPE_GEN3_PLL3, - CLK_TYPE_GEN3_PLL4, - CLK_TYPE_GEN3_SD, - CLK_TYPE_GEN3_R, -}; - -#define DEF_GEN3_SD(_name, _id, _parent, _offset) \ - DEF_BASE(_name, _id, CLK_TYPE_GEN3_SD, _parent, .offset = _offset) - static const struct cpg_core_clk r8a7795_core_clks[] __initconst = { /* External Clock Inputs */ DEF_INPUT("extal", CLK_EXTAL), @@ -129,6 +107,9 @@ static const struct cpg_core_clk r8a7795_core_clks[] __initconst = { }; static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = { + DEF_MOD("fdp1-2", 117, R8A7795_CLK_S2D1), + DEF_MOD("fdp1-1", 118, R8A7795_CLK_S2D1), + DEF_MOD("fdp1-0", 119, R8A7795_CLK_S2D1), DEF_MOD("scif5", 202, R8A7795_CLK_S3D4), DEF_MOD("scif4", 203, R8A7795_CLK_S3D4), DEF_MOD("scif3", 204, R8A7795_CLK_S3D4), @@ -157,11 +138,20 @@ static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = { DEF_MOD("intc-ap", 408, R8A7795_CLK_S3D1), DEF_MOD("audmac0", 502, R8A7795_CLK_S3D4), DEF_MOD("audmac1", 501, R8A7795_CLK_S3D4), + DEF_MOD("drif7", 508, R8A7795_CLK_S3D2), + DEF_MOD("drif6", 509, R8A7795_CLK_S3D2), + DEF_MOD("drif5", 510, R8A7795_CLK_S3D2), + DEF_MOD("drif4", 511, R8A7795_CLK_S3D2), + DEF_MOD("drif3", 512, R8A7795_CLK_S3D2), + DEF_MOD("drif2", 513, R8A7795_CLK_S3D2), + DEF_MOD("drif1", 514, R8A7795_CLK_S3D2), + DEF_MOD("drif0", 515, R8A7795_CLK_S3D2), DEF_MOD("hscif4", 516, R8A7795_CLK_S3D1), DEF_MOD("hscif3", 517, R8A7795_CLK_S3D1), DEF_MOD("hscif2", 518, R8A7795_CLK_S3D1), DEF_MOD("hscif1", 519, R8A7795_CLK_S3D1), DEF_MOD("hscif0", 520, R8A7795_CLK_S3D1), + DEF_MOD("thermal", 522, R8A7795_CLK_CP), DEF_MOD("pwm", 523, R8A7795_CLK_S3D4), DEF_MOD("fcpvd3", 600, R8A7795_CLK_S2D1), DEF_MOD("fcpvd2", 601, R8A7795_CLK_S2D1), @@ -199,7 +189,7 @@ static const struct mssr_mod_clk r8a7795_mod_clks[] __initconst = { DEF_MOD("du2", 722, R8A7795_CLK_S2D1), DEF_MOD("du1", 723, R8A7795_CLK_S2D1), DEF_MOD("du0", 724, R8A7795_CLK_S2D1), - DEF_MOD("lvds", 727, R8A7795_CLK_S2D1), + DEF_MOD("lvds", 727, R8A7795_CLK_S0D4), DEF_MOD("hdmi1", 728, R8A7795_CLK_HDMI), DEF_MOD("hdmi0", 729, R8A7795_CLK_HDMI), DEF_MOD("vin7", 804, R8A7795_CLK_S2D1), @@ -262,225 +252,6 @@ static const unsigned int r8a7795_crit_mod_clks[] __initconst = { MOD_CLK_ID(408), /* INTC-AP (GIC) */ }; -/* ----------------------------------------------------------------------------- - * SDn Clock - * - */ -#define CPG_SD_STP_HCK BIT(9) -#define CPG_SD_STP_CK BIT(8) - -#define CPG_SD_STP_MASK (CPG_SD_STP_HCK | CPG_SD_STP_CK) -#define CPG_SD_FC_MASK (0x7 << 2 | 0x3 << 0) - -#define CPG_SD_DIV_TABLE_DATA(stp_hck, stp_ck, sd_srcfc, sd_fc, sd_div) \ -{ \ - .val = ((stp_hck) ? CPG_SD_STP_HCK : 0) | \ - ((stp_ck) ? CPG_SD_STP_CK : 0) | \ - ((sd_srcfc) << 2) | \ - ((sd_fc) << 0), \ - .div = (sd_div), \ -} - -struct sd_div_table { - u32 val; - unsigned int div; -}; - -struct sd_clock { - struct clk_hw hw; - void __iomem *reg; - const struct sd_div_table *div_table; - unsigned int div_num; - unsigned int div_min; - unsigned int div_max; -}; - -/* SDn divider - * sd_srcfc sd_fc div - * stp_hck stp_ck (div) (div) = sd_srcfc x sd_fc - *------------------------------------------------------------------- - * 0 0 0 (1) 1 (4) 4 - * 0 0 1 (2) 1 (4) 8 - * 1 0 2 (4) 1 (4) 16 - * 1 0 3 (8) 1 (4) 32 - * 1 0 4 (16) 1 (4) 64 - * 0 0 0 (1) 0 (2) 2 - * 0 0 1 (2) 0 (2) 4 - * 1 0 2 (4) 0 (2) 8 - * 1 0 3 (8) 0 (2) 16 - * 1 0 4 (16) 0 (2) 32 - */ -static const struct sd_div_table cpg_sd_div_table[] = { -/* CPG_SD_DIV_TABLE_DATA(stp_hck, stp_ck, sd_srcfc, sd_fc, sd_div) */ - CPG_SD_DIV_TABLE_DATA(0, 0, 0, 1, 4), - CPG_SD_DIV_TABLE_DATA(0, 0, 1, 1, 8), - CPG_SD_DIV_TABLE_DATA(1, 0, 2, 1, 16), - CPG_SD_DIV_TABLE_DATA(1, 0, 3, 1, 32), - CPG_SD_DIV_TABLE_DATA(1, 0, 4, 1, 64), - CPG_SD_DIV_TABLE_DATA(0, 0, 0, 0, 2), - CPG_SD_DIV_TABLE_DATA(0, 0, 1, 0, 4), - CPG_SD_DIV_TABLE_DATA(1, 0, 2, 0, 8), - CPG_SD_DIV_TABLE_DATA(1, 0, 3, 0, 16), - CPG_SD_DIV_TABLE_DATA(1, 0, 4, 0, 32), -}; - -#define to_sd_clock(_hw) container_of(_hw, struct sd_clock, hw) - -static int cpg_sd_clock_enable(struct clk_hw *hw) -{ - struct sd_clock *clock = to_sd_clock(hw); - u32 val, sd_fc; - unsigned int i; - - val = clk_readl(clock->reg); - - sd_fc = val & CPG_SD_FC_MASK; - for (i = 0; i < clock->div_num; i++) - if (sd_fc == (clock->div_table[i].val & CPG_SD_FC_MASK)) - break; - - if (i >= clock->div_num) - return -EINVAL; - - val &= ~(CPG_SD_STP_MASK); - val |= clock->div_table[i].val & CPG_SD_STP_MASK; - - clk_writel(val, clock->reg); - - return 0; -} - -static void cpg_sd_clock_disable(struct clk_hw *hw) -{ - struct sd_clock *clock = to_sd_clock(hw); - - clk_writel(clk_readl(clock->reg) | CPG_SD_STP_MASK, clock->reg); -} - -static int cpg_sd_clock_is_enabled(struct clk_hw *hw) -{ - struct sd_clock *clock = to_sd_clock(hw); - - return !(clk_readl(clock->reg) & CPG_SD_STP_MASK); -} - -static unsigned long cpg_sd_clock_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) -{ - struct sd_clock *clock = to_sd_clock(hw); - unsigned long rate = parent_rate; - u32 val, sd_fc; - unsigned int i; - - val = clk_readl(clock->reg); - - sd_fc = val & CPG_SD_FC_MASK; - for (i = 0; i < clock->div_num; i++) - if (sd_fc == (clock->div_table[i].val & CPG_SD_FC_MASK)) - break; - - if (i >= clock->div_num) - return -EINVAL; - - return DIV_ROUND_CLOSEST(rate, clock->div_table[i].div); -} - -static unsigned int cpg_sd_clock_calc_div(struct sd_clock *clock, - unsigned long rate, - unsigned long parent_rate) -{ - unsigned int div; - - if (!rate) - rate = 1; - - div = DIV_ROUND_CLOSEST(parent_rate, rate); - - return clamp_t(unsigned int, div, clock->div_min, clock->div_max); -} - -static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *parent_rate) -{ - struct sd_clock *clock = to_sd_clock(hw); - unsigned int div = cpg_sd_clock_calc_div(clock, rate, *parent_rate); - - return DIV_ROUND_CLOSEST(*parent_rate, div); -} - -static int cpg_sd_clock_set_rate(struct clk_hw *hw, unsigned long rate, - unsigned long parent_rate) -{ - struct sd_clock *clock = to_sd_clock(hw); - unsigned int div = cpg_sd_clock_calc_div(clock, rate, parent_rate); - u32 val; - unsigned int i; - - for (i = 0; i < clock->div_num; i++) - if (div == clock->div_table[i].div) - break; - - if (i >= clock->div_num) - return -EINVAL; - - val = clk_readl(clock->reg); - val &= ~(CPG_SD_STP_MASK | CPG_SD_FC_MASK); - val |= clock->div_table[i].val & (CPG_SD_STP_MASK | CPG_SD_FC_MASK); - clk_writel(val, clock->reg); - - return 0; -} - -static const struct clk_ops cpg_sd_clock_ops = { - .enable = cpg_sd_clock_enable, - .disable = cpg_sd_clock_disable, - .is_enabled = cpg_sd_clock_is_enabled, - .recalc_rate = cpg_sd_clock_recalc_rate, - .round_rate = cpg_sd_clock_round_rate, - .set_rate = cpg_sd_clock_set_rate, -}; - -static struct clk * __init cpg_sd_clk_register(const struct cpg_core_clk *core, - void __iomem *base, - const char *parent_name) -{ - struct clk_init_data init; - struct sd_clock *clock; - struct clk *clk; - unsigned int i; - - clock = kzalloc(sizeof(*clock), GFP_KERNEL); - if (!clock) - return ERR_PTR(-ENOMEM); - - init.name = core->name; - init.ops = &cpg_sd_clock_ops; - init.flags = CLK_IS_BASIC | CLK_SET_RATE_PARENT; - init.parent_names = &parent_name; - init.num_parents = 1; - - clock->reg = base + core->offset; - clock->hw.init = &init; - clock->div_table = cpg_sd_div_table; - clock->div_num = ARRAY_SIZE(cpg_sd_div_table); - - clock->div_max = clock->div_table[0].div; - clock->div_min = clock->div_max; - for (i = 1; i < clock->div_num; i++) { - clock->div_max = max(clock->div_max, clock->div_table[i].div); - clock->div_min = min(clock->div_min, clock->div_table[i].div); - } - - clk = clk_register(NULL, &clock->hw); - if (IS_ERR(clk)) - kfree(clock); - - return clk; -} - -#define CPG_PLL0CR 0x00d8 -#define CPG_PLL2CR 0x002c -#define CPG_PLL4CR 0x01f4 /* * CPG Clock Data @@ -512,13 +283,7 @@ static struct clk * __init cpg_sd_clk_register(const struct cpg_core_clk *core, (((md) & BIT(19)) >> 18) | \ (((md) & BIT(17)) >> 17)) -struct cpg_pll_config { - unsigned int extal_div; - unsigned int pll1_mult; - unsigned int pll3_mult; -}; - -static const struct cpg_pll_config cpg_pll_configs[16] __initconst = { +static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = { /* EXTAL div PLL1 mult PLL3 mult */ { 1, 192, 192, }, { 1, 192, 128, }, @@ -538,112 +303,9 @@ static const struct cpg_pll_config cpg_pll_configs[16] __initconst = { { 2, 192, 192, }, }; -static const struct cpg_pll_config *cpg_pll_config __initdata; - -static -struct clk * __init r8a7795_cpg_clk_register(struct device *dev, - const struct cpg_core_clk *core, - const struct cpg_mssr_info *info, - struct clk **clks, - void __iomem *base) -{ - const struct clk *parent; - unsigned int mult = 1; - unsigned int div = 1; - u32 value; - - parent = clks[core->parent]; - if (IS_ERR(parent)) - return ERR_CAST(parent); - - switch (core->type) { - case CLK_TYPE_GEN3_MAIN: - div = cpg_pll_config->extal_div; - break; - - case CLK_TYPE_GEN3_PLL0: - /* - * PLL0 is a configurable multiplier clock. Register it as a - * fixed factor clock for now as there's no generic multiplier - * clock implementation and we currently have no need to change - * the multiplier value. - */ - value = readl(base + CPG_PLL0CR); - mult = (((value >> 24) & 0x7f) + 1) * 2; - break; - - case CLK_TYPE_GEN3_PLL1: - mult = cpg_pll_config->pll1_mult; - break; - - case CLK_TYPE_GEN3_PLL2: - /* - * PLL2 is a configurable multiplier clock. Register it as a - * fixed factor clock for now as there's no generic multiplier - * clock implementation and we currently have no need to change - * the multiplier value. - */ - value = readl(base + CPG_PLL2CR); - mult = (((value >> 24) & 0x7f) + 1) * 2; - break; - - case CLK_TYPE_GEN3_PLL3: - mult = cpg_pll_config->pll3_mult; - break; - - case CLK_TYPE_GEN3_PLL4: - /* - * PLL4 is a configurable multiplier clock. Register it as a - * fixed factor clock for now as there's no generic multiplier - * clock implementation and we currently have no need to change - * the multiplier value. - */ - value = readl(base + CPG_PLL4CR); - mult = (((value >> 24) & 0x7f) + 1) * 2; - break; - - case CLK_TYPE_GEN3_SD: - return cpg_sd_clk_register(core, base, __clk_get_name(parent)); - - case CLK_TYPE_GEN3_R: - /* RINT is default. Only if EXTALR is populated, we switch to it */ - value = readl(base + CPG_RCKCR) & 0x3f; - - if (clk_get_rate(clks[CLK_EXTALR])) { - parent = clks[CLK_EXTALR]; - value |= BIT(15); - } - - writel(value, base + CPG_RCKCR); - break; - - default: - return ERR_PTR(-EINVAL); - } - - return clk_register_fixed_factor(NULL, core->name, - __clk_get_name(parent), 0, mult, div); -} - -/* - * Reset register definitions. - */ -#define MODEMR 0xe6160060 - -static u32 rcar_gen3_read_mode_pins(void) -{ - void __iomem *modemr = ioremap_nocache(MODEMR, 4); - u32 mode; - - BUG_ON(!modemr); - mode = ioread32(modemr); - iounmap(modemr); - - return mode; -} - static int __init r8a7795_cpg_mssr_init(struct device *dev) { + const struct rcar_gen3_cpg_pll_config *cpg_pll_config; u32 cpg_mode = rcar_gen3_read_mode_pins(); cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; @@ -652,7 +314,7 @@ static int __init r8a7795_cpg_mssr_init(struct device *dev) return -EINVAL; } - return 0; + return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR); } const struct cpg_mssr_info r8a7795_cpg_mssr_info __initconst = { @@ -673,5 +335,5 @@ const struct cpg_mssr_info r8a7795_cpg_mssr_info __initconst = { /* Callbacks */ .init = r8a7795_cpg_mssr_init, - .cpg_clk_register = r8a7795_cpg_clk_register, + .cpg_clk_register = rcar_gen3_cpg_clk_register, }; diff --git a/drivers/clk/renesas/r8a7796-cpg-mssr.c b/drivers/clk/renesas/r8a7796-cpg-mssr.c new file mode 100644 index 0000000..c84b549 --- /dev/null +++ b/drivers/clk/renesas/r8a7796-cpg-mssr.c @@ -0,0 +1,192 @@ +/* + * r8a7796 Clock Pulse Generator / Module Standby and Software Reset + * + * Copyright (C) 2016 Glider bvba + * + * Based on r8a7795-cpg-mssr.c + * + * Copyright (C) 2015 Glider bvba + * Copyright (C) 2015 Renesas Electronics Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +#include <linux/device.h> +#include <linux/init.h> +#include <linux/kernel.h> + +#include <dt-bindings/clock/r8a7796-cpg-mssr.h> + +#include "renesas-cpg-mssr.h" +#include "rcar-gen3-cpg.h" + +enum clk_ids { + /* Core Clock Outputs exported to DT */ + LAST_DT_CORE_CLK = R8A7796_CLK_OSC, + + /* External Input Clocks */ + CLK_EXTAL, + CLK_EXTALR, + + /* Internal Core Clocks */ + CLK_MAIN, + CLK_PLL0, + CLK_PLL1, + CLK_PLL2, + CLK_PLL3, + CLK_PLL4, + CLK_PLL1_DIV2, + CLK_PLL1_DIV4, + CLK_S0, + CLK_S1, + CLK_S2, + CLK_S3, + CLK_SDSRC, + CLK_SSPSRC, + + /* Module Clocks */ + MOD_CLK_BASE +}; + +static const struct cpg_core_clk r8a7796_core_clks[] __initconst = { + /* External Clock Inputs */ + DEF_INPUT("extal", CLK_EXTAL), + DEF_INPUT("extalr", CLK_EXTALR), + + /* Internal Core Clocks */ + DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL), + DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN), + DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN), + DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN), + DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN), + DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN), + + DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1), + DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1), + DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1), + DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1), + DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1), + DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1), + + /* Core Clock Outputs */ + DEF_FIXED("ztr", R8A7796_CLK_ZTR, CLK_PLL1_DIV2, 6, 1), + DEF_FIXED("ztrd2", R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1), + DEF_FIXED("zt", R8A7796_CLK_ZT, CLK_PLL1_DIV2, 4, 1), + DEF_FIXED("zx", R8A7796_CLK_ZX, CLK_PLL1_DIV2, 2, 1), + DEF_FIXED("s0d1", R8A7796_CLK_S0D1, CLK_S0, 1, 1), + DEF_FIXED("s0d2", R8A7796_CLK_S0D2, CLK_S0, 2, 1), + DEF_FIXED("s0d3", R8A7796_CLK_S0D3, CLK_S0, 3, 1), + DEF_FIXED("s0d4", R8A7796_CLK_S0D4, CLK_S0, 4, 1), + DEF_FIXED("s0d6", R8A7796_CLK_S0D6, CLK_S0, 6, 1), + DEF_FIXED("s0d8", R8A7796_CLK_S0D8, CLK_S0, 8, 1), + DEF_FIXED("s0d12", R8A7796_CLK_S0D12, CLK_S0, 12, 1), + DEF_FIXED("s1d1", R8A7796_CLK_S1D1, CLK_S1, 1, 1), + DEF_FIXED("s1d2", R8A7796_CLK_S1D2, CLK_S1, 2, 1), + DEF_FIXED("s1d4", R8A7796_CLK_S1D4, CLK_S1, 4, 1), + DEF_FIXED("s2d1", R8A7796_CLK_S2D1, CLK_S2, 1, 1), + DEF_FIXED("s2d2", R8A7796_CLK_S2D2, CLK_S2, 2, 1), + DEF_FIXED("s2d4", R8A7796_CLK_S2D4, CLK_S2, 4, 1), + DEF_FIXED("s3d1", R8A7796_CLK_S3D1, CLK_S3, 1, 1), + DEF_FIXED("s3d2", R8A7796_CLK_S3D2, CLK_S3, 2, 1), + DEF_FIXED("s3d4", R8A7796_CLK_S3D4, CLK_S3, 4, 1), + + DEF_FIXED("cl", R8A7796_CLK_CL, CLK_PLL1_DIV2, 48, 1), + DEF_FIXED("cp", R8A7796_CLK_CP, CLK_EXTAL, 2, 1), +}; + +static const struct mssr_mod_clk r8a7796_mod_clks[] __initconst = { + DEF_MOD("scif2", 310, R8A7796_CLK_S3D4), + DEF_MOD("intc-ap", 408, R8A7796_CLK_S3D1), +}; + +static const unsigned int r8a7796_crit_mod_clks[] __initconst = { + MOD_CLK_ID(408), /* INTC-AP (GIC) */ +}; + + +/* + * CPG Clock Data + */ + +/* + * MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4 + * 14 13 19 17 (MHz) + *------------------------------------------------------------------- + * 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144 + * 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144 + * 0 0 1 0 Prohibited setting + * 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144 + * 0 1 0 0 20 x 1 x150 x160 x120 x160 x120 + * 0 1 0 1 20 x 1 x150 x160 x120 x106 x120 + * 0 1 1 0 Prohibited setting + * 0 1 1 1 20 x 1 x150 x160 x120 x160 x120 + * 1 0 0 0 25 x 1 x120 x128 x96 x128 x96 + * 1 0 0 1 25 x 1 x120 x128 x96 x84 x96 + * 1 0 1 0 Prohibited setting + * 1 0 1 1 25 x 1 x120 x128 x96 x128 x96 + * 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144 + * 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144 + * 1 1 1 0 Prohibited setting + * 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144 + */ +#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) | \ + (((md) & BIT(13)) >> 11) | \ + (((md) & BIT(19)) >> 18) | \ + (((md) & BIT(17)) >> 17)) + +static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = { + /* EXTAL div PLL1 mult PLL3 mult */ + { 1, 192, 192, }, + { 1, 192, 128, }, + { 0, /* Prohibited setting */ }, + { 1, 192, 192, }, + { 1, 160, 160, }, + { 1, 160, 106, }, + { 0, /* Prohibited setting */ }, + { 1, 160, 160, }, + { 1, 128, 128, }, + { 1, 128, 84, }, + { 0, /* Prohibited setting */ }, + { 1, 128, 128, }, + { 2, 192, 192, }, + { 2, 192, 128, }, + { 0, /* Prohibited setting */ }, + { 2, 192, 192, }, +}; + +static int __init r8a7796_cpg_mssr_init(struct device *dev) +{ + const struct rcar_gen3_cpg_pll_config *cpg_pll_config; + u32 cpg_mode = rcar_gen3_read_mode_pins(); + + cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; + if (!cpg_pll_config->extal_div) { + dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode); + return -EINVAL; + } + + return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR); +} + +const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = { + /* Core Clocks */ + .core_clks = r8a7796_core_clks, + .num_core_clks = ARRAY_SIZE(r8a7796_core_clks), + .last_dt_core_clk = LAST_DT_CORE_CLK, + .num_total_core_clks = MOD_CLK_BASE, + + /* Module Clocks */ + .mod_clks = r8a7796_mod_clks, + .num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks), + .num_hw_mod_clks = 12 * 32, + + /* Critical Module Clocks */ + .crit_mod_clks = r8a7796_crit_mod_clks, + .num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks), + + /* Callbacks */ + .init = r8a7796_cpg_mssr_init, + .cpg_clk_register = rcar_gen3_cpg_clk_register, +}; diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c new file mode 100644 index 0000000..bb4f2f9 --- /dev/null +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -0,0 +1,359 @@ +/* + * R-Car Gen3 Clock Pulse Generator + * + * Copyright (C) 2015-2016 Glider bvba + * + * Based on clk-rcar-gen3.c + * + * Copyright (C) 2015 Renesas Electronics Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +#include <linux/bug.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/slab.h> + +#include "renesas-cpg-mssr.h" +#include "rcar-gen3-cpg.h" + +#define CPG_PLL0CR 0x00d8 +#define CPG_PLL2CR 0x002c +#define CPG_PLL4CR 0x01f4 + + +/* + * SDn Clock + */ +#define CPG_SD_STP_HCK BIT(9) +#define CPG_SD_STP_CK BIT(8) + +#define CPG_SD_STP_MASK (CPG_SD_STP_HCK | CPG_SD_STP_CK) +#define CPG_SD_FC_MASK (0x7 << 2 | 0x3 << 0) + +#define CPG_SD_DIV_TABLE_DATA(stp_hck, stp_ck, sd_srcfc, sd_fc, sd_div) \ +{ \ + .val = ((stp_hck) ? CPG_SD_STP_HCK : 0) | \ + ((stp_ck) ? CPG_SD_STP_CK : 0) | \ + ((sd_srcfc) << 2) | \ + ((sd_fc) << 0), \ + .div = (sd_div), \ +} + +struct sd_div_table { + u32 val; + unsigned int div; +}; + +struct sd_clock { + struct clk_hw hw; + void __iomem *reg; + const struct sd_div_table *div_table; + unsigned int div_num; + unsigned int div_min; + unsigned int div_max; +}; + +/* SDn divider + * sd_srcfc sd_fc div + * stp_hck stp_ck (div) (div) = sd_srcfc x sd_fc + *------------------------------------------------------------------- + * 0 0 0 (1) 1 (4) 4 + * 0 0 1 (2) 1 (4) 8 + * 1 0 2 (4) 1 (4) 16 + * 1 0 3 (8) 1 (4) 32 + * 1 0 4 (16) 1 (4) 64 + * 0 0 0 (1) 0 (2) 2 + * 0 0 1 (2) 0 (2) 4 + * 1 0 2 (4) 0 (2) 8 + * 1 0 3 (8) 0 (2) 16 + * 1 0 4 (16) 0 (2) 32 + */ +static const struct sd_div_table cpg_sd_div_table[] = { +/* CPG_SD_DIV_TABLE_DATA(stp_hck, stp_ck, sd_srcfc, sd_fc, sd_div) */ + CPG_SD_DIV_TABLE_DATA(0, 0, 0, 1, 4), + CPG_SD_DIV_TABLE_DATA(0, 0, 1, 1, 8), + CPG_SD_DIV_TABLE_DATA(1, 0, 2, 1, 16), + CPG_SD_DIV_TABLE_DATA(1, 0, 3, 1, 32), + CPG_SD_DIV_TABLE_DATA(1, 0, 4, 1, 64), + CPG_SD_DIV_TABLE_DATA(0, 0, 0, 0, 2), + CPG_SD_DIV_TABLE_DATA(0, 0, 1, 0, 4), + CPG_SD_DIV_TABLE_DATA(1, 0, 2, 0, 8), + CPG_SD_DIV_TABLE_DATA(1, 0, 3, 0, 16), + CPG_SD_DIV_TABLE_DATA(1, 0, 4, 0, 32), +}; + +#define to_sd_clock(_hw) container_of(_hw, struct sd_clock, hw) + +static int cpg_sd_clock_enable(struct clk_hw *hw) +{ + struct sd_clock *clock = to_sd_clock(hw); + u32 val, sd_fc; + unsigned int i; + + val = clk_readl(clock->reg); + + sd_fc = val & CPG_SD_FC_MASK; + for (i = 0; i < clock->div_num; i++) + if (sd_fc == (clock->div_table[i].val & CPG_SD_FC_MASK)) + break; + + if (i >= clock->div_num) + return -EINVAL; + + val &= ~(CPG_SD_STP_MASK); + val |= clock->div_table[i].val & CPG_SD_STP_MASK; + + clk_writel(val, clock->reg); + + return 0; +} + +static void cpg_sd_clock_disable(struct clk_hw *hw) +{ + struct sd_clock *clock = to_sd_clock(hw); + + clk_writel(clk_readl(clock->reg) | CPG_SD_STP_MASK, clock->reg); +} + +static int cpg_sd_clock_is_enabled(struct clk_hw *hw) +{ + struct sd_clock *clock = to_sd_clock(hw); + + return !(clk_readl(clock->reg) & CPG_SD_STP_MASK); +} + +static unsigned long cpg_sd_clock_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct sd_clock *clock = to_sd_clock(hw); + unsigned long rate = parent_rate; + u32 val, sd_fc; + unsigned int i; + + val = clk_readl(clock->reg); + + sd_fc = val & CPG_SD_FC_MASK; + for (i = 0; i < clock->div_num; i++) + if (sd_fc == (clock->div_table[i].val & CPG_SD_FC_MASK)) + break; + + if (i >= clock->div_num) + return -EINVAL; + + return DIV_ROUND_CLOSEST(rate, clock->div_table[i].div); +} + +static unsigned int cpg_sd_clock_calc_div(struct sd_clock *clock, + unsigned long rate, + unsigned long parent_rate) +{ + unsigned int div; + + if (!rate) + rate = 1; + + div = DIV_ROUND_CLOSEST(parent_rate, rate); + + return clamp_t(unsigned int, div, clock->div_min, clock->div_max); +} + +static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct sd_clock *clock = to_sd_clock(hw); + unsigned int div = cpg_sd_clock_calc_div(clock, rate, *parent_rate); + + return DIV_ROUND_CLOSEST(*parent_rate, div); +} + +static int cpg_sd_clock_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct sd_clock *clock = to_sd_clock(hw); + unsigned int div = cpg_sd_clock_calc_div(clock, rate, parent_rate); + u32 val; + unsigned int i; + + for (i = 0; i < clock->div_num; i++) + if (div == clock->div_table[i].div) + break; + + if (i >= clock->div_num) + return -EINVAL; + + val = clk_readl(clock->reg); + val &= ~(CPG_SD_STP_MASK | CPG_SD_FC_MASK); + val |= clock->div_table[i].val & (CPG_SD_STP_MASK | CPG_SD_FC_MASK); + clk_writel(val, clock->reg); + + return 0; +} + +static const struct clk_ops cpg_sd_clock_ops = { + .enable = cpg_sd_clock_enable, + .disable = cpg_sd_clock_disable, + .is_enabled = cpg_sd_clock_is_enabled, + .recalc_rate = cpg_sd_clock_recalc_rate, + .round_rate = cpg_sd_clock_round_rate, + .set_rate = cpg_sd_clock_set_rate, +}; + +static struct clk * __init cpg_sd_clk_register(const struct cpg_core_clk *core, + void __iomem *base, + const char *parent_name) +{ + struct clk_init_data init; + struct sd_clock *clock; + struct clk *clk; + unsigned int i; + + clock = kzalloc(sizeof(*clock), GFP_KERNEL); + if (!clock) + return ERR_PTR(-ENOMEM); + + init.name = core->name; + init.ops = &cpg_sd_clock_ops; + init.flags = CLK_IS_BASIC | CLK_SET_RATE_PARENT; + init.parent_names = &parent_name; + init.num_parents = 1; + + clock->reg = base + core->offset; + clock->hw.init = &init; + clock->div_table = cpg_sd_div_table; + clock->div_num = ARRAY_SIZE(cpg_sd_div_table); + + clock->div_max = clock->div_table[0].div; + clock->div_min = clock->div_max; + for (i = 1; i < clock->div_num; i++) { + clock->div_max = max(clock->div_max, clock->div_table[i].div); + clock->div_min = min(clock->div_min, clock->div_table[i].div); + } + + clk = clk_register(NULL, &clock->hw); + if (IS_ERR(clk)) + kfree(clock); + + return clk; +} + + +static const struct rcar_gen3_cpg_pll_config *cpg_pll_config __initdata; +static unsigned int cpg_clk_extalr __initdata; + +struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, + const struct cpg_core_clk *core, const struct cpg_mssr_info *info, + struct clk **clks, void __iomem *base) +{ + const struct clk *parent; + unsigned int mult = 1; + unsigned int div = 1; + u32 value; + + parent = clks[core->parent]; + if (IS_ERR(parent)) + return ERR_CAST(parent); + + switch (core->type) { + case CLK_TYPE_GEN3_MAIN: + div = cpg_pll_config->extal_div; + break; + + case CLK_TYPE_GEN3_PLL0: + /* + * PLL0 is a configurable multiplier clock. Register it as a + * fixed factor clock for now as there's no generic multiplier + * clock implementation and we currently have no need to change + * the multiplier value. + */ + value = readl(base + CPG_PLL0CR); + mult = (((value >> 24) & 0x7f) + 1) * 2; + break; + + case CLK_TYPE_GEN3_PLL1: + mult = cpg_pll_config->pll1_mult; + break; + + case CLK_TYPE_GEN3_PLL2: + /* + * PLL2 is a configurable multiplier clock. Register it as a + * fixed factor clock for now as there's no generic multiplier + * clock implementation and we currently have no need to change + * the multiplier value. + */ + value = readl(base + CPG_PLL2CR); + mult = (((value >> 24) & 0x7f) + 1) * 2; + break; + + case CLK_TYPE_GEN3_PLL3: + mult = cpg_pll_config->pll3_mult; + break; + + case CLK_TYPE_GEN3_PLL4: + /* + * PLL4 is a configurable multiplier clock. Register it as a + * fixed factor clock for now as there's no generic multiplier + * clock implementation and we currently have no need to change + * the multiplier value. + */ + value = readl(base + CPG_PLL4CR); + mult = (((value >> 24) & 0x7f) + 1) * 2; + break; + + case CLK_TYPE_GEN3_SD: + return cpg_sd_clk_register(core, base, __clk_get_name(parent)); + + case CLK_TYPE_GEN3_R: + /* + * RINT is default. + * Only if EXTALR is populated, we switch to it. + */ + value = readl(base + CPG_RCKCR) & 0x3f; + + if (clk_get_rate(clks[cpg_clk_extalr])) { + parent = clks[cpg_clk_extalr]; + value |= BIT(15); + } + + writel(value, base + CPG_RCKCR); + break; + + default: + return ERR_PTR(-EINVAL); + } + + return clk_register_fixed_factor(NULL, core->name, + __clk_get_name(parent), 0, mult, div); +} + +/* + * Reset register definitions. + */ +#define MODEMR 0xe6160060 + +u32 __init rcar_gen3_read_mode_pins(void) +{ + void __iomem *modemr = ioremap_nocache(MODEMR, 4); + u32 mode; + + BUG_ON(!modemr); + mode = ioread32(modemr); + iounmap(modemr); + + return mode; +} + +int __init rcar_gen3_cpg_init(const struct rcar_gen3_cpg_pll_config *config, + unsigned int clk_extalr) +{ + cpg_pll_config = config; + cpg_clk_extalr = clk_extalr; + return 0; +} diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h new file mode 100644 index 0000000..f699085 --- /dev/null +++ b/drivers/clk/renesas/rcar-gen3-cpg.h @@ -0,0 +1,43 @@ +/* + * R-Car Gen3 Clock Pulse Generator + * + * Copyright (C) 2015-2016 Glider bvba + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +#ifndef __CLK_RENESAS_RCAR_GEN3_CPG_H__ +#define __CLK_RENESAS_RCAR_GEN3_CPG_H__ + +enum rcar_gen3_clk_types { + CLK_TYPE_GEN3_MAIN = CLK_TYPE_CUSTOM, + CLK_TYPE_GEN3_PLL0, + CLK_TYPE_GEN3_PLL1, + CLK_TYPE_GEN3_PLL2, + CLK_TYPE_GEN3_PLL3, + CLK_TYPE_GEN3_PLL4, + CLK_TYPE_GEN3_SD, + CLK_TYPE_GEN3_R, +}; + +#define DEF_GEN3_SD(_name, _id, _parent, _offset) \ + DEF_BASE(_name, _id, CLK_TYPE_GEN3_SD, _parent, .offset = _offset) + +struct rcar_gen3_cpg_pll_config { + unsigned int extal_div; + unsigned int pll1_mult; + unsigned int pll3_mult; +}; + +#define CPG_RCKCR 0x240 + +u32 rcar_gen3_read_mode_pins(void); +struct clk *rcar_gen3_cpg_clk_register(struct device *dev, + const struct cpg_core_clk *core, const struct cpg_mssr_info *info, + struct clk **clks, void __iomem *base); +int rcar_gen3_cpg_init(const struct rcar_gen3_cpg_pll_config *config, + unsigned int clk_extalr); + +#endif diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c index 210cd74..e1365e7 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.c +++ b/drivers/clk/renesas/renesas-cpg-mssr.c @@ -509,6 +509,12 @@ static const struct of_device_id cpg_mssr_match[] = { .data = &r8a7795_cpg_mssr_info, }, #endif +#ifdef CONFIG_ARCH_R8A7796 + { + .compatible = "renesas,r8a7796-cpg-mssr", + .data = &r8a7796_cpg_mssr_info, + }, +#endif { /* sentinel */ } }; diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h index 0d1e3e8..ee7edfa 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.h +++ b/drivers/clk/renesas/renesas-cpg-mssr.h @@ -131,4 +131,5 @@ struct cpg_mssr_info { }; extern const struct cpg_mssr_info r8a7795_cpg_mssr_info; +extern const struct cpg_mssr_info r8a7796_cpg_mssr_info; #endif diff --git a/include/dt-bindings/clock/r8a7796-cpg-mssr.h b/include/dt-bindings/clock/r8a7796-cpg-mssr.h new file mode 100644 index 0000000..1e59426 --- /dev/null +++ b/include/dt-bindings/clock/r8a7796-cpg-mssr.h @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2016 Renesas Electronics Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __DT_BINDINGS_CLOCK_R8A7796_CPG_MSSR_H__ +#define __DT_BINDINGS_CLOCK_R8A7796_CPG_MSSR_H__ + +#include <dt-bindings/clock/renesas-cpg-mssr.h> + +/* r8a7796 CPG Core Clocks */ +#define R8A7796_CLK_Z 0 +#define R8A7796_CLK_Z2 1 +#define R8A7796_CLK_ZR 2 +#define R8A7796_CLK_ZG 3 +#define R8A7796_CLK_ZTR 4 +#define R8A7796_CLK_ZTRD2 5 +#define R8A7796_CLK_ZT 6 +#define R8A7796_CLK_ZX 7 +#define R8A7796_CLK_S0D1 8 +#define R8A7796_CLK_S0D2 9 +#define R8A7796_CLK_S0D3 10 +#define R8A7796_CLK_S0D4 11 +#define R8A7796_CLK_S0D6 12 +#define R8A7796_CLK_S0D8 13 +#define R8A7796_CLK_S0D12 14 +#define R8A7796_CLK_S1D1 15 +#define R8A7796_CLK_S1D2 16 +#define R8A7796_CLK_S1D4 17 +#define R8A7796_CLK_S2D1 18 +#define R8A7796_CLK_S2D2 19 +#define R8A7796_CLK_S2D4 20 +#define R8A7796_CLK_S3D1 21 +#define R8A7796_CLK_S3D2 22 +#define R8A7796_CLK_S3D4 23 +#define R8A7796_CLK_LB 24 +#define R8A7796_CLK_CL 25 +#define R8A7796_CLK_ZB3 26 +#define R8A7796_CLK_ZB3D2 27 +#define R8A7796_CLK_ZB3D4 28 +#define R8A7796_CLK_CR 29 +#define R8A7796_CLK_CRD2 30 +#define R8A7796_CLK_SD0H 31 +#define R8A7796_CLK_SD0 32 +#define R8A7796_CLK_SD1H 33 +#define R8A7796_CLK_SD1 34 +#define R8A7796_CLK_SD2H 35 +#define R8A7796_CLK_SD2 36 +#define R8A7796_CLK_SD3H 37 +#define R8A7796_CLK_SD3 38 +#define R8A7796_CLK_SSP2 39 +#define R8A7796_CLK_SSP1 40 +#define R8A7796_CLK_SSPRS 41 +#define R8A7796_CLK_RPC 42 +#define R8A7796_CLK_RPCD2 43 +#define R8A7796_CLK_MSO 44 +#define R8A7796_CLK_CANFD 45 +#define R8A7796_CLK_HDMI 46 +#define R8A7796_CLK_CSI0 47 +#define R8A7796_CLK_CSIREF 48 +#define R8A7796_CLK_CP 49 +#define R8A7796_CLK_CPEX 50 +#define R8A7796_CLK_R 51 +#define R8A7796_CLK_OSC 52 + +#endif /* __DT_BINDINGS_CLOCK_R8A7796_CPG_MSSR_H__ */ |