diff options
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/Kconfig | 1 | ||||
-rw-r--r-- | arch/arm/boot/dts/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos4.dtsi | 18 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos4210-universal_c210.dts | 15 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos4210.dtsi | 18 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos4412-trats2.dts | 79 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos4x12.dtsi | 18 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos5250.dtsi | 18 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos5420-peach-pit.dts | 147 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos5420-pinctrl.dtsi | 28 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos5420.dtsi | 71 | ||||
-rw-r--r-- | arch/arm/mach-exynos/Kconfig | 8 | ||||
-rw-r--r-- | arch/arm/mach-exynos/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-exynos/common.h | 7 | ||||
-rw-r--r-- | arch/arm/mach-exynos/exynos.c | 64 | ||||
-rw-r--r-- | arch/arm/mach-exynos/firmware.c | 8 | ||||
-rw-r--r-- | arch/arm/mach-exynos/hotplug.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-exynos/include/mach/map.h | 7 | ||||
-rw-r--r-- | arch/arm/mach-exynos/mcpm-exynos.c | 351 | ||||
-rw-r--r-- | arch/arm/mach-exynos/platsmp.c | 65 | ||||
-rw-r--r-- | arch/arm/mach-exynos/pm.c | 66 | ||||
-rw-r--r-- | arch/arm/mach-exynos/regs-pmu.h | 16 |
22 files changed, 902 insertions, 108 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index f849690eb888..3bf70415542e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -843,6 +843,7 @@ config ARCH_EXYNOS select HAVE_S3C_RTC if RTC_CLASS select NEED_MACH_MEMORY_H select SPARSE_IRQ + select SRAM select USE_OF help Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5) diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 7ec6ec076417..ff7a04b68d88 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -74,6 +74,7 @@ dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \ exynos5250-smdk5250.dtb \ exynos5250-snow.dtb \ exynos5420-arndale-octa.dtb \ + exynos5420-peach-pit.dtb \ exynos5420-smdk5420.dtb \ exynos5440-sd5v1.dtb \ exynos5440-ssdk5440.dtb diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi index 2f8bcd068d17..58ff8e28c74f 100644 --- a/arch/arm/boot/dts/exynos4.dtsi +++ b/arch/arm/boot/dts/exynos4.dtsi @@ -129,12 +129,10 @@ status = "disabled"; #address-cells = <1>; #size-cells = <1>; + #clock-cells = <1>; + clock-output-names = "cam_a_clkout", "cam_b_clkout"; ranges; - clock_cam: clock-controller { - #clock-cells = <1>; - }; - fimc_0: fimc@11800000 { compatible = "samsung,exynos4210-fimc"; reg = <0x11800000 0x1000>; @@ -371,6 +369,8 @@ interrupts = <0 60 0>; clocks = <&clock CLK_I2C2>; clock-names = "i2c"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c2_bus>; status = "disabled"; }; @@ -382,6 +382,8 @@ interrupts = <0 61 0>; clocks = <&clock CLK_I2C3>; clock-names = "i2c"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c3_bus>; status = "disabled"; }; @@ -393,6 +395,8 @@ interrupts = <0 62 0>; clocks = <&clock CLK_I2C4>; clock-names = "i2c"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c4_bus>; status = "disabled"; }; @@ -404,6 +408,8 @@ interrupts = <0 63 0>; clocks = <&clock CLK_I2C5>; clock-names = "i2c"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c5_bus>; status = "disabled"; }; @@ -415,6 +421,8 @@ interrupts = <0 64 0>; clocks = <&clock CLK_I2C6>; clock-names = "i2c"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c6_bus>; status = "disabled"; }; @@ -426,6 +434,8 @@ interrupts = <0 65 0>; clocks = <&clock CLK_I2C7>; clock-names = "i2c"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c7_bus>; status = "disabled"; }; diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts b/arch/arm/boot/dts/exynos4210-universal_c210.dts index 63e34b24b04f..9296dee10e26 100644 --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts @@ -28,6 +28,21 @@ bootargs = "console=ttySAC2,115200N8 root=/dev/mmcblk0p5 rw rootwait earlyprintk panic=5 maxcpus=1"; }; + sysram@02020000 { + smp-sysram@0 { + status = "disabled"; + }; + + smp-sysram@5000 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x5000 0x1000>; + }; + + smp-sysram@1f000 { + status = "disabled"; + }; + }; + mct@10050000 { compatible = "none"; }; diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi index cacf6140dd2f..ee3001f38821 100644 --- a/arch/arm/boot/dts/exynos4210.dtsi +++ b/arch/arm/boot/dts/exynos4210.dtsi @@ -31,6 +31,24 @@ pinctrl2 = &pinctrl_2; }; + sysram@02020000 { + compatible = "mmio-sram"; + reg = <0x02020000 0x20000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x02020000 0x20000>; + + smp-sysram@0 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x0 0x1000>; + }; + + smp-sysram@1f000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x1f000 0x1000>; + }; + }; + pd_lcd1: lcd1-power-domain@10023CA0 { compatible = "samsung,exynos4210-pd"; reg = <0x10023CA0 0x20>; diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts index 9583563dd0ef..f621fd976815 100644 --- a/arch/arm/boot/dts/exynos4412-trats2.dts +++ b/arch/arm/boot/dts/exynos4412-trats2.dts @@ -20,7 +20,7 @@ compatible = "samsung,trats2", "samsung,exynos4412", "samsung,exynos4"; aliases { - i2c8 = &i2c_ak8975; + i2c9 = &i2c_ak8975; }; memory { @@ -80,7 +80,24 @@ enable-active-high; }; - /* More to come */ + cam_af_reg: voltage-regulator-3 { + compatible = "regulator-fixed"; + regulator-name = "CAM_AF"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + gpio = <&gpm0 4 0>; + enable-active-high; + }; + + cam_isp_core_reg: voltage-regulator-4 { + compatible = "regulator-fixed"; + regulator-name = "CAM_ISP_CORE_1.2V_EN"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + gpio = <&gpm0 3 0>; + enable-active-high; + regulator-always-on; + }; }; gpio-keys { @@ -140,6 +157,38 @@ }; }; + i2c_0: i2c@13860000 { + samsung,i2c-sda-delay = <100>; + samsung,i2c-slave-addr = <0x10>; + samsung,i2c-max-bus-freq = <400000>; + pinctrl-0 = <&i2c0_bus>; + pinctrl-names = "default"; + status = "okay"; + + s5c73m3@3c { + compatible = "samsung,s5c73m3"; + reg = <0x3c>; + standby-gpios = <&gpm0 1 1>; /* ISP_STANDBY */ + xshutdown-gpios = <&gpf1 3 1>; /* ISP_RESET */ + vdd-int-supply = <&buck9_reg>; + vddio-cis-supply = <&ldo9_reg>; + vdda-supply = <&ldo17_reg>; + vddio-host-supply = <&ldo18_reg>; + vdd-af-supply = <&cam_af_reg>; + vdd-reg-supply = <&cam_io_reg>; + clock-frequency = <24000000>; + /* CAM_A_CLKOUT */ + clocks = <&camera 0>; + clock-names = "cis_extclk"; + port { + s5c73m3_ep: endpoint { + remote-endpoint = <&csis0_ep>; + data-lanes = <1 2 3 4>; + }; + }; + }; + }; + i2c@138D0000 { samsung,i2c-sda-delay = <100>; samsung,i2c-slave-addr = <0x10>; @@ -586,8 +635,8 @@ status = "okay"; }; - camera { - pinctrl-0 = <&cam_port_b_clk_active>; + camera: camera { + pinctrl-0 = <&cam_port_a_clk_active &cam_port_b_clk_active>; pinctrl-names = "default"; status = "okay"; @@ -607,6 +656,23 @@ status = "okay"; }; + csis_0: csis@11880000 { + status = "okay"; + vddcore-supply = <&ldo8_reg>; + vddio-supply = <&ldo10_reg>; + clock-frequency = <176000000>; + + /* Camera C (3) MIPI CSI-2 (CSIS0) */ + port@3 { + reg = <3>; + csis0_ep: endpoint { + remote-endpoint = <&s5c73m3_ep>; + data-lanes = <1 2 3 4>; + samsung,csis-hs-settle = <12>; + }; + }; + }; + csis_1: csis@11890000 { vddcore-supply = <&ldo8_reg>; vddio-supply = <&ldo10_reg>; @@ -647,10 +713,11 @@ reg = <0x10>; svdda-supply = <&cam_io_reg>; svddio-supply = <&ldo19_reg>; + afvdd-supply = <&ldo19_reg>; clock-frequency = <24000000>; /* CAM_B_CLKOUT */ - clocks = <&clock_cam 1>; - clock-names = "mclk"; + clocks = <&camera 1>; + clock-names = "extclk"; samsung,camclk-out = <1>; gpios = <&gpm1 6 0>; diff --git a/arch/arm/boot/dts/exynos4x12.dtsi b/arch/arm/boot/dts/exynos4x12.dtsi index c4a9306f8529..70e3765b51ee 100644 --- a/arch/arm/boot/dts/exynos4x12.dtsi +++ b/arch/arm/boot/dts/exynos4x12.dtsi @@ -37,6 +37,24 @@ interrupts = <2 2>, <3 2>, <18 2>, <19 2>; }; + sysram@02020000 { + compatible = "mmio-sram"; + reg = <0x02020000 0x40000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x02020000 0x40000>; + + smp-sysram@0 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x0 0x1000>; + }; + + smp-sysram@2f000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x2f000 0x1000>; + }; + }; + pd_isp: isp-power-domain@10023CA0 { compatible = "samsung,exynos4210-pd"; reg = <0x10023CA0 0x20>; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index 37423314a028..e44693e2cfda 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -72,6 +72,24 @@ }; }; + sysram@02020000 { + compatible = "mmio-sram"; + reg = <0x02020000 0x30000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x02020000 0x30000>; + + smp-sysram@0 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x0 0x1000>; + }; + + smp-sysram@2f000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x2f000 0x1000>; + }; + }; + pd_gsc: gsc-power-domain@10044000 { compatible = "samsung,exynos4210-pd"; reg = <0x10044000 0x20>; diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts new file mode 100644 index 000000000000..fae33dddac39 --- /dev/null +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -0,0 +1,147 @@ +/* + * Google Peach Pit Rev 6+ board device tree source + * + * Copyright (c) 2014 Google, 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. + */ + +/dts-v1/; +#include <dt-bindings/input/input.h> +#include <dt-bindings/gpio/gpio.h> +#include "exynos5420.dtsi" + +/ { + model = "Google Peach Pit Rev 6+"; + + compatible = "google,pit-rev16", + "google,pit-rev15", "google,pit-rev14", + "google,pit-rev13", "google,pit-rev12", + "google,pit-rev11", "google,pit-rev10", + "google,pit-rev9", "google,pit-rev8", + "google,pit-rev7", "google,pit-rev6", + "google,pit", "google,peach","samsung,exynos5420", + "samsung,exynos5"; + + memory { + reg = <0x20000000 0x80000000>; + }; + + fixed-rate-clocks { + oscclk { + compatible = "samsung,exynos5420-oscclk"; + clock-frequency = <24000000>; + }; + }; + + gpio-keys { + compatible = "gpio-keys"; + + pinctrl-names = "default"; + pinctrl-0 = <&power_key_irq>; + + power { + label = "Power"; + gpios = <&gpx1 2 GPIO_ACTIVE_LOW>; + linux,code = <KEY_POWER>; + gpio-key,wakeup; + }; + }; + + backlight { + compatible = "pwm-backlight"; + pwms = <&pwm 0 1000000 0>; + brightness-levels = <0 100 500 1000 1500 2000 2500 2800>; + default-brightness-level = <7>; + pinctrl-0 = <&pwm0_out>; + pinctrl-names = "default"; + }; +}; + +&pinctrl_0 { + tpm_irq: tpm-irq { + samsung,pins = "gpx1-0"; + samsung,pin-function = <0>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + + power_key_irq: power-key-irq { + samsung,pins = "gpx1-2"; + samsung,pin-function = <0>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; +}; + +&rtc { + status = "okay"; +}; + +&uart_3 { + status = "okay"; +}; + +&mmc_0 { + status = "okay"; + num-slots = <1>; + broken-cd; + caps2-mmc-hs200-1_8v; + supports-highspeed; + non-removable; + card-detect-delay = <200>; + clock-frequency = <400000000>; + samsung,dw-mshc-ciu-div = <3>; + samsung,dw-mshc-sdr-timing = <0 4>; + samsung,dw-mshc-ddr-timing = <0 2>; + pinctrl-names = "default"; + pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4 &sd0_bus8>; + + slot@0 { + reg = <0>; + bus-width = <8>; + }; +}; + +&mmc_2 { + status = "okay"; + num-slots = <1>; + supports-highspeed; + card-detect-delay = <200>; + clock-frequency = <400000000>; + samsung,dw-mshc-ciu-div = <3>; + samsung,dw-mshc-sdr-timing = <2 3>; + samsung,dw-mshc-ddr-timing = <1 2>; + pinctrl-names = "default"; + pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>; + + slot@0 { + reg = <0>; + bus-width = <4>; + }; +}; + +&hsi2c_9 { + status = "okay"; + clock-frequency = <400000>; + + tpm@20 { + compatible = "infineon,slb9645tt"; + reg = <0x20>; + + /* Unused irq; but still need to configure the pins */ + pinctrl-names = "default"; + pinctrl-0 = <&tpm_irq>; + }; +}; + +/* + * Use longest HW watchdog in SoC (32 seconds) since the hardware + * watchdog provides no debugging information (compared to soft/hard + * lockup detectors) and so should be last resort. + */ +&watchdog { + timeout-sec = <32>; +}; diff --git a/arch/arm/boot/dts/exynos5420-pinctrl.dtsi b/arch/arm/boot/dts/exynos5420-pinctrl.dtsi index e62c8eb57438..ba686e40eac7 100644 --- a/arch/arm/boot/dts/exynos5420-pinctrl.dtsi +++ b/arch/arm/boot/dts/exynos5420-pinctrl.dtsi @@ -624,6 +624,34 @@ samsung,pin-drv = <0>; }; + pwm0_out: pwm0-out { + samsung,pins = "gpb2-0"; + samsung,pin-function = <2>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + + pwm1_out: pwm1-out { + samsung,pins = "gpb2-1"; + samsung,pin-function = <2>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + + pwm2_out: pwm2-out { + samsung,pins = "gpb2-2"; + samsung,pin-function = <2>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + + pwm3_out: pwm3-out { + samsung,pins = "gpb2-3"; + samsung,pin-function = <2>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + i2c7_hs_bus: i2c7-hs-bus { samsung,pins = "gpb2-2", "gpb2-3"; samsung,pin-function = <3>; diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index c3a9a66c5767..00d541a1a3d4 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -58,6 +58,7 @@ compatible = "arm,cortex-a15"; reg = <0x0>; clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; }; cpu1: cpu@1 { @@ -65,6 +66,7 @@ compatible = "arm,cortex-a15"; reg = <0x1>; clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; }; cpu2: cpu@2 { @@ -72,6 +74,7 @@ compatible = "arm,cortex-a15"; reg = <0x2>; clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; }; cpu3: cpu@3 { @@ -79,6 +82,7 @@ compatible = "arm,cortex-a15"; reg = <0x3>; clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; }; cpu4: cpu@100 { @@ -86,6 +90,7 @@ compatible = "arm,cortex-a7"; reg = <0x100>; clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; }; cpu5: cpu@101 { @@ -93,6 +98,7 @@ compatible = "arm,cortex-a7"; reg = <0x101>; clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; }; cpu6: cpu@102 { @@ -100,6 +106,7 @@ compatible = "arm,cortex-a7"; reg = <0x102>; clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; }; cpu7: cpu@103 { @@ -107,6 +114,44 @@ compatible = "arm,cortex-a7"; reg = <0x103>; clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; + }; + }; + + cci@10d20000 { + compatible = "arm,cci-400"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x10d20000 0x1000>; + ranges = <0x0 0x10d20000 0x6000>; + + cci_control0: slave-if@4000 { + compatible = "arm,cci-400-ctrl-if"; + interface-type = "ace"; + reg = <0x4000 0x1000>; + }; + cci_control1: slave-if@5000 { + compatible = "arm,cci-400-ctrl-if"; + interface-type = "ace"; + reg = <0x5000 0x1000>; + }; + }; + + sysram@02020000 { + compatible = "mmio-sram"; + reg = <0x02020000 0x54000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x02020000 0x54000>; + + smp-sysram@0 { + compatible = "samsung,exynos4210-sysram"; + reg = <0x0 0x1000>; + }; + + smp-sysram@53000 { + compatible = "samsung,exynos4210-sysram-ns"; + reg = <0x53000 0x1000>; }; }; @@ -125,7 +170,7 @@ clock-names = "pll_ref", "pll_in", "sclk_audio", "sclk_pcm_in"; }; - codec@11000000 { + mfc: codec@11000000 { compatible = "samsung,mfc-v7"; reg = <0x11000000 0x10000>; interrupts = <0 96 0>; @@ -169,7 +214,7 @@ status = "disabled"; }; - mct@101C0000 { + mct: mct@101C0000 { compatible = "samsung,exynos4210-mct"; reg = <0x101C0000 0x800>; interrupt-controller; @@ -270,7 +315,7 @@ interrupts = <0 47 0>; }; - rtc@101E0000 { + rtc: rtc@101E0000 { clocks = <&clock CLK_RTC>; clock-names = "rtc"; status = "disabled"; @@ -430,22 +475,22 @@ status = "disabled"; }; - serial@12C00000 { + uart_0: serial@12C00000 { clocks = <&clock CLK_UART0>, <&clock CLK_SCLK_UART0>; clock-names = "uart", "clk_uart_baud0"; }; - serial@12C10000 { + uart_1: serial@12C10000 { clocks = <&clock CLK_UART1>, <&clock CLK_SCLK_UART1>; clock-names = "uart", "clk_uart_baud0"; }; - serial@12C20000 { + uart_2: serial@12C20000 { clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>; clock-names = "uart", "clk_uart_baud0"; }; - serial@12C30000 { + uart_3: serial@12C30000 { clocks = <&clock CLK_UART3>, <&clock CLK_SCLK_UART3>; clock-names = "uart", "clk_uart_baud0"; }; @@ -465,14 +510,14 @@ #phy-cells = <0>; }; - dp-controller@145B0000 { + dp: dp-controller@145B0000 { clocks = <&clock CLK_DP1>; clock-names = "dp"; phys = <&dp_phy>; phy-names = "dp"; }; - fimd@14400000 { + fimd: fimd@14400000 { samsung,power-domain = <&disp_pd>; clocks = <&clock CLK_SCLK_FIMD1>, <&clock CLK_FIMD1>; clock-names = "sclk_fimd", "fimd"; @@ -632,7 +677,7 @@ status = "disabled"; }; - hdmi@14530000 { + hdmi: hdmi@14530000 { compatible = "samsung,exynos4212-hdmi"; reg = <0x14530000 0x70000>; interrupts = <0 95 0>; @@ -644,7 +689,7 @@ status = "disabled"; }; - mixer@14450000 { + mixer: mixer@14450000 { compatible = "samsung,exynos5420-mixer"; reg = <0x14450000 0x10000>; interrupts = <0 94 0>; @@ -715,7 +760,7 @@ clock-names = "tmu_apbif", "tmu_triminfo_apbif"; }; - watchdog@101D0000 { + watchdog: watchdog@101D0000 { compatible = "samsung,exynos5420-wdt"; reg = <0x101D0000 0x100>; interrupts = <0 42 0>; @@ -724,7 +769,7 @@ samsung,syscon-phandle = <&pmu_system_controller>; }; - sss@10830000 { + sss: sss@10830000 { compatible = "samsung,exynos4210-secss"; reg = <0x10830000 0x10000>; interrupts = <0 112 0>; diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index fc8bf18e222d..1602abce6ec0 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -110,4 +110,12 @@ config SOC_EXYNOS5440 endmenu +config EXYNOS5420_MCPM + bool "Exynos5420 Multi-Cluster PM support" + depends on MCPM && SOC_EXYNOS5420 + select ARM_CCI + help + This is needed to provide CPU and cluster power management + on Exynos5420 implementing big.LITTLE. + endif diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile index a656dbe3b78c..01bc9b94a032 100644 --- a/arch/arm/mach-exynos/Makefile +++ b/arch/arm/mach-exynos/Makefile @@ -29,3 +29,5 @@ obj-$(CONFIG_ARCH_EXYNOS) += firmware.o plus_sec := $(call as-instr,.arch_extension sec,+sec) AFLAGS_exynos-smc.o :=-Wa,-march=armv7-a$(plus_sec) + +obj-$(CONFIG_EXYNOS5420_MCPM) += mcpm-exynos.o diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h index 9ef3f83efaff..7876ed04b7a5 100644 --- a/arch/arm/mach-exynos/common.h +++ b/arch/arm/mach-exynos/common.h @@ -18,6 +18,7 @@ void mct_init(void __iomem *base, int irq_g0, int irq_l0, int irq_l1); struct map_desc; +extern void __iomem *sysram_ns_base_addr; void exynos_init_io(void); void exynos_restart(enum reboot_mode mode, const char *cmd); void exynos_cpuidle_init(void); @@ -62,5 +63,11 @@ struct exynos_pmu_conf { }; extern void exynos_sys_powerdown_conf(enum sys_powerdown mode); +extern void exynos_cpu_power_down(int cpu); +extern void exynos_cpu_power_up(int cpu); +extern int exynos_cpu_power_state(int cpu); +extern void exynos_cluster_power_down(int cluster); +extern void exynos_cluster_power_up(int cluster); +extern int exynos_cluster_power_state(int cluster); #endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */ diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index b32a907d021d..e973ff5de7b3 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -114,51 +114,6 @@ static struct map_desc exynos4_iodesc[] __initdata = { }, }; -static struct map_desc exynos4_iodesc0[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos4_iodesc1[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos4210_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM_NS, - .pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos4x12_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM_NS, - .pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - -static struct map_desc exynos5250_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_SYSRAM_NS, - .pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; - static struct map_desc exynos5_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -181,11 +136,6 @@ static struct map_desc exynos5_iodesc[] __initdata = { .length = SZ_4K, .type = MT_DEVICE, }, { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM), - .length = SZ_4K, - .type = MT_DEVICE, - }, { .virtual = (unsigned long)S5P_VA_CMU, .pfn = __phys_to_pfn(EXYNOS5_PA_CMU), .length = 144 * SZ_1K, @@ -280,20 +230,6 @@ static void __init exynos_map_io(void) if (soc_is_exynos5()) iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc)); - - if (soc_is_exynos4210()) { - if (samsung_rev() == EXYNOS4210_REV_0) - iotable_init(exynos4_iodesc0, - ARRAY_SIZE(exynos4_iodesc0)); - else - iotable_init(exynos4_iodesc1, - ARRAY_SIZE(exynos4_iodesc1)); - iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc)); - } - if (soc_is_exynos4212() || soc_is_exynos4412()) - iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc)); - if (soc_is_exynos5250()) - iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc)); } void __init exynos_init_io(void) diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 932129ef26c6..483dfcd69065 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -18,6 +18,7 @@ #include <mach/map.h> +#include "common.h" #include "smc.h" static int exynos_do_idle(void) @@ -34,7 +35,12 @@ static int exynos_cpu_boot(int cpu) static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) { - void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c + 4*cpu; + void __iomem *boot_reg; + + if (!sysram_ns_base_addr) + return -ENODEV; + + boot_reg = sysram_ns_base_addr + 0x1c + 4*cpu; __raw_writel(boot_addr, boot_reg); return 0; diff --git a/arch/arm/mach-exynos/hotplug.c b/arch/arm/mach-exynos/hotplug.c index 5eead530c6f8..609c99ca59c4 100644 --- a/arch/arm/mach-exynos/hotplug.c +++ b/arch/arm/mach-exynos/hotplug.c @@ -96,7 +96,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) /* make cpu1 to be turned off at next WFI command */ if (cpu == 1) - __raw_writel(0, S5P_ARM_CORE1_CONFIGURATION); + exynos_cpu_power_down(cpu); /* * here's the WFI diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h index 7b046b59d9ec..548269a60634 100644 --- a/arch/arm/mach-exynos/include/mach/map.h +++ b/arch/arm/mach-exynos/include/mach/map.h @@ -23,13 +23,6 @@ #include <plat/map-s5p.h> -#define EXYNOS4_PA_SYSRAM0 0x02025000 -#define EXYNOS4_PA_SYSRAM1 0x02020000 -#define EXYNOS5_PA_SYSRAM 0x02020000 -#define EXYNOS4210_PA_SYSRAM_NS 0x0203F000 -#define EXYNOS4x12_PA_SYSRAM_NS 0x0204F000 -#define EXYNOS5250_PA_SYSRAM_NS 0x0204F000 - #define EXYNOS_PA_CHIPID 0x10000000 #define EXYNOS4_PA_SYSCON 0x10010000 diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c new file mode 100644 index 000000000000..1ac618ce440b --- /dev/null +++ b/arch/arm/mach-exynos/mcpm-exynos.c @@ -0,0 +1,351 @@ +/* + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * arch/arm/mach-exynos/mcpm-exynos.c + * + * Based on arch/arm/mach-vexpress/dcscb.c + * + * 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. + */ + +#include <linux/arm-cci.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/of_address.h> + +#include <asm/cputype.h> +#include <asm/cp15.h> +#include <asm/mcpm.h> + +#include "regs-pmu.h" +#include "common.h" + +#define EXYNOS5420_CPUS_PER_CLUSTER 4 +#define EXYNOS5420_NR_CLUSTERS 2 +#define MCPM_BOOT_ADDR_OFFSET 0x1c + +/* + * The common v7_exit_coherency_flush API could not be used because of the + * Erratum 799270 workaround. This macro is the same as the common one (in + * arch/arm/include/asm/cacheflush.h) except for the erratum handling. + */ +#define exynos_v7_exit_coherency_flush(level) \ + asm volatile( \ + "stmfd sp!, {fp, ip}\n\t"\ + "mrc p15, 0, r0, c1, c0, 0 @ get SCTLR\n\t" \ + "bic r0, r0, #"__stringify(CR_C)"\n\t" \ + "mcr p15, 0, r0, c1, c0, 0 @ set SCTLR\n\t" \ + "isb\n\t"\ + "bl v7_flush_dcache_"__stringify(level)"\n\t" \ + "clrex\n\t"\ + "mrc p15, 0, r0, c1, c0, 1 @ get ACTLR\n\t" \ + "bic r0, r0, #(1 << 6) @ disable local coherency\n\t" \ + /* Dummy Load of a device register to avoid Erratum 799270 */ \ + "ldr r4, [%0]\n\t" \ + "and r4, r4, #0\n\t" \ + "orr r0, r0, r4\n\t" \ + "mcr p15, 0, r0, c1, c0, 1 @ set ACTLR\n\t" \ + "isb\n\t" \ + "dsb\n\t" \ + "ldmfd sp!, {fp, ip}" \ + : \ + : "Ir" (S5P_INFORM0) \ + : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ + "r9", "r10", "lr", "memory") + +/* + * We can't use regular spinlocks. In the switcher case, it is possible + * for an outbound CPU to call power_down() after its inbound counterpart + * is already live using the same logical CPU number which trips lockdep + * debugging. + */ +static arch_spinlock_t exynos_mcpm_lock = __ARCH_SPIN_LOCK_UNLOCKED; +static int +cpu_use_count[EXYNOS5420_CPUS_PER_CLUSTER][EXYNOS5420_NR_CLUSTERS]; + +#define exynos_cluster_usecnt(cluster) \ + (cpu_use_count[0][cluster] + \ + cpu_use_count[1][cluster] + \ + cpu_use_count[2][cluster] + \ + cpu_use_count[3][cluster]) + +#define exynos_cluster_unused(cluster) !exynos_cluster_usecnt(cluster) + +static int exynos_cluster_power_control(unsigned int cluster, int enable) +{ + unsigned int tries = 100; + unsigned int val; + + if (enable) { + exynos_cluster_power_up(cluster); + val = S5P_CORE_LOCAL_PWR_EN; + } else { + exynos_cluster_power_down(cluster); + val = 0; + } + + /* Wait until cluster power control is applied */ + while (tries--) { + if (exynos_cluster_power_state(cluster) == val) + return 0; + + cpu_relax(); + } + pr_debug("timed out waiting for cluster %u to power %s\n", cluster, + enable ? "on" : "off"); + + return -ETIMEDOUT; +} + +static int exynos_power_up(unsigned int cpu, unsigned int cluster) +{ + unsigned int cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER); + int err = 0; + + pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); + if (cpu >= EXYNOS5420_CPUS_PER_CLUSTER || + cluster >= EXYNOS5420_NR_CLUSTERS) + return -EINVAL; + + /* + * Since this is called with IRQs enabled, and no arch_spin_lock_irq + * variant exists, we need to disable IRQs manually here. + */ + local_irq_disable(); + arch_spin_lock(&exynos_mcpm_lock); + + cpu_use_count[cpu][cluster]++; + if (cpu_use_count[cpu][cluster] == 1) { + bool was_cluster_down = + (exynos_cluster_usecnt(cluster) == 1); + + /* + * Turn on the cluster (L2/COMMON) and then power on the + * cores. + */ + if (was_cluster_down) + err = exynos_cluster_power_control(cluster, 1); + + if (!err) + exynos_cpu_power_up(cpunr); + else + exynos_cluster_power_control(cluster, 0); + } else if (cpu_use_count[cpu][cluster] != 2) { + /* + * The only possible values are: + * 0 = CPU down + * 1 = CPU (still) up + * 2 = CPU requested to be up before it had a chance + * to actually make itself down. + * Any other value is a bug. + */ + BUG(); + } + + arch_spin_unlock(&exynos_mcpm_lock); + local_irq_enable(); + + return err; +} + +/* + * NOTE: This function requires the stack data to be visible through power down + * and can only be executed on processors like A15 and A7 that hit the cache + * with the C bit clear in the SCTLR register. + */ +static void exynos_power_down(void) +{ + unsigned int mpidr, cpu, cluster; + bool last_man = false, skip_wfi = false; + unsigned int cpunr; + + mpidr = read_cpuid_mpidr(); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER); + + pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); + BUG_ON(cpu >= EXYNOS5420_CPUS_PER_CLUSTER || + cluster >= EXYNOS5420_NR_CLUSTERS); + + __mcpm_cpu_going_down(cpu, cluster); + + arch_spin_lock(&exynos_mcpm_lock); + BUG_ON(__mcpm_cluster_state(cluster) != CLUSTER_UP); + cpu_use_count[cpu][cluster]--; + if (cpu_use_count[cpu][cluster] == 0) { + exynos_cpu_power_down(cpunr); + + if (exynos_cluster_unused(cluster)) + /* TODO: Turn off the cluster here to save power. */ + last_man = true; + } else if (cpu_use_count[cpu][cluster] == 1) { + /* + * A power_up request went ahead of us. + * Even if we do not want to shut this CPU down, + * the caller expects a certain state as if the WFI + * was aborted. So let's continue with cache cleaning. + */ + skip_wfi = true; + } else { + BUG(); + } + + if (last_man && __mcpm_outbound_enter_critical(cpu, cluster)) { + arch_spin_unlock(&exynos_mcpm_lock); + + if (read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A15) { + /* + * On the Cortex-A15 we need to disable + * L2 prefetching before flushing the cache. + */ + asm volatile( + "mcr p15, 1, %0, c15, c0, 3\n\t" + "isb\n\t" + "dsb" + : : "r" (0x400)); + } + + /* Flush all cache levels for this cluster. */ + exynos_v7_exit_coherency_flush(all); + + /* + * Disable cluster-level coherency by masking + * incoming snoops and DVM messages: + */ + cci_disable_port_by_cpu(mpidr); + + __mcpm_outbound_leave_critical(cluster, CLUSTER_DOWN); + } else { + arch_spin_unlock(&exynos_mcpm_lock); + + /* Disable and flush the local CPU cache. */ + exynos_v7_exit_coherency_flush(louis); + } + + __mcpm_cpu_down(cpu, cluster); + + /* Now we are prepared for power-down, do it: */ + if (!skip_wfi) + wfi(); + + /* Not dead at this point? Let our caller cope. */ +} + +static int exynos_power_down_finish(unsigned int cpu, unsigned int cluster) +{ + unsigned int tries = 100; + unsigned int cpunr = cpu + (cluster * EXYNOS5420_CPUS_PER_CLUSTER); + + pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); + BUG_ON(cpu >= EXYNOS5420_CPUS_PER_CLUSTER || + cluster >= EXYNOS5420_NR_CLUSTERS); + + /* Wait for the core state to be OFF */ + while (tries--) { + if (ACCESS_ONCE(cpu_use_count[cpu][cluster]) == 0) { + if ((exynos_cpu_power_state(cpunr) == 0)) + return 0; /* success: the CPU is halted */ + } + + /* Otherwise, wait and retry: */ + msleep(1); + } + + return -ETIMEDOUT; /* timeout */ +} + +static const struct mcpm_platform_ops exynos_power_ops = { + .power_up = exynos_power_up, + .power_down = exynos_power_down, + .power_down_finish = exynos_power_down_finish, +}; + +static void __init exynos_mcpm_usage_count_init(void) +{ + unsigned int mpidr, cpu, cluster; + + mpidr = read_cpuid_mpidr(); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + + pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); + BUG_ON(cpu >= EXYNOS5420_CPUS_PER_CLUSTER || + cluster >= EXYNOS5420_NR_CLUSTERS); + + cpu_use_count[cpu][cluster] = 1; +} + +/* + * Enable cluster-level coherency, in preparation for turning on the MMU. + */ +static void __naked exynos_pm_power_up_setup(unsigned int affinity_level) +{ + asm volatile ("\n" + "cmp r0, #1\n" + "bxne lr\n" + "b cci_enable_port_for_self"); +} + +static int __init exynos_mcpm_init(void) +{ + struct device_node *node; + void __iomem *ns_sram_base_addr; + int ret; + + node = of_find_compatible_node(NULL, NULL, "samsung,exynos5420"); + if (!node) + return -ENODEV; + of_node_put(node); + + if (!cci_probed()) + return -ENODEV; + + node = of_find_compatible_node(NULL, NULL, + "samsung,exynos4210-sysram-ns"); + if (!node) + return -ENODEV; + + ns_sram_base_addr = of_iomap(node, 0); + of_node_put(node); + if (!ns_sram_base_addr) { + pr_err("failed to map non-secure iRAM base address\n"); + return -ENOMEM; + } + + /* + * To increase the stability of KFC reset we need to program + * the PMU SPARE3 register + */ + __raw_writel(EXYNOS5420_SWRESET_KFC_SEL, S5P_PMU_SPARE3); + + exynos_mcpm_usage_count_init(); + + ret = mcpm_platform_register(&exynos_power_ops); + if (!ret) + ret = mcpm_sync_init(exynos_pm_power_up_setup); + if (ret) { + iounmap(ns_sram_base_addr); + return ret; + } + + mcpm_smp_set_ops(); + + pr_info("Exynos MCPM support installed\n"); + + /* + * Future entries into the kernel can now go + * through the cluster entry vectors. + */ + __raw_writel(virt_to_phys(mcpm_entry_point), + ns_sram_base_addr + MCPM_BOOT_ADDR_OFFSET); + + iounmap(ns_sram_base_addr); + + return ret; +} + +early_initcall(exynos_mcpm_init); diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c index 03e5e9f94705..78002c7344b3 100644 --- a/arch/arm/mach-exynos/platsmp.c +++ b/arch/arm/mach-exynos/platsmp.c @@ -20,6 +20,7 @@ #include <linux/jiffies.h> #include <linux/smp.h> #include <linux/io.h> +#include <linux/of_address.h> #include <asm/cacheflush.h> #include <asm/smp_plat.h> @@ -33,11 +34,33 @@ extern void exynos4_secondary_startup(void); +static void __iomem *sysram_base_addr; +void __iomem *sysram_ns_base_addr; + +static void __init exynos_smp_prepare_sysram(void) +{ + struct device_node *node; + + for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram") { + if (!of_device_is_available(node)) + continue; + sysram_base_addr = of_iomap(node, 0); + break; + } + + for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram-ns") { + if (!of_device_is_available(node)) + continue; + sysram_ns_base_addr = of_iomap(node, 0); + break; + } +} + static inline void __iomem *cpu_boot_reg_base(void) { if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_1_1) return S5P_INFORM5; - return S5P_VA_SYSRAM; + return sysram_base_addr; } static inline void __iomem *cpu_boot_reg(int cpu) @@ -45,6 +68,8 @@ static inline void __iomem *cpu_boot_reg(int cpu) void __iomem *boot_reg; boot_reg = cpu_boot_reg_base(); + if (!boot_reg) + return ERR_PTR(-ENODEV); if (soc_is_exynos4412()) boot_reg += 4*cpu; else if (soc_is_exynos5420()) @@ -90,6 +115,7 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) { unsigned long timeout; unsigned long phys_cpu = cpu_logical_map(cpu); + int ret = -ENOSYS; /* * Set synchronisation state between this boot processor @@ -107,15 +133,12 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) */ write_pen_release(phys_cpu); - if (!(__raw_readl(S5P_ARM_CORE1_STATUS) & S5P_CORE_LOCAL_PWR_EN)) { - __raw_writel(S5P_CORE_LOCAL_PWR_EN, - S5P_ARM_CORE1_CONFIGURATION); - + if (!exynos_cpu_power_state(cpu)) { + exynos_cpu_power_up(cpu); timeout = 10; /* wait max 10 ms until cpu1 is on */ - while ((__raw_readl(S5P_ARM_CORE1_STATUS) - & S5P_CORE_LOCAL_PWR_EN) != S5P_CORE_LOCAL_PWR_EN) { + while (exynos_cpu_power_state(cpu) != S5P_CORE_LOCAL_PWR_EN) { if (timeout-- == 0) break; @@ -146,8 +169,18 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) * Try to set boot address using firmware first * and fall back to boot register if it fails. */ - if (call_firmware_op(set_cpu_boot_addr, phys_cpu, boot_addr)) + ret = call_firmware_op(set_cpu_boot_addr, phys_cpu, boot_addr); + if (ret && ret != -ENOSYS) + goto fail; + if (ret == -ENOSYS) { + void __iomem *boot_reg = cpu_boot_reg(phys_cpu); + + if (IS_ERR(boot_reg)) { + ret = PTR_ERR(boot_reg); + goto fail; + } __raw_writel(boot_addr, cpu_boot_reg(phys_cpu)); + } call_firmware_op(cpu_boot, phys_cpu); @@ -163,9 +196,10 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) * now the secondary core is starting up let it run its * calibrations, then wait for it to finish */ +fail: spin_unlock(&boot_lock); - return pen_release != -1 ? -ENOSYS : 0; + return pen_release != -1 ? ret : 0; } /* @@ -205,6 +239,8 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus) if (read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9) scu_enable(scu_base_addr()); + exynos_smp_prepare_sysram(); + /* * Write the address of secondary startup into the * system-wide flags register. The boot monitor waits @@ -217,12 +253,21 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus) for (i = 1; i < max_cpus; ++i) { unsigned long phys_cpu; unsigned long boot_addr; + int ret; phys_cpu = cpu_logical_map(i); boot_addr = virt_to_phys(exynos4_secondary_startup); - if (call_firmware_op(set_cpu_boot_addr, phys_cpu, boot_addr)) + ret = call_firmware_op(set_cpu_boot_addr, phys_cpu, boot_addr); + if (ret && ret != -ENOSYS) + break; + if (ret == -ENOSYS) { + void __iomem *boot_reg = cpu_boot_reg(phys_cpu); + + if (IS_ERR(boot_reg)) + break; __raw_writel(boot_addr, cpu_boot_reg(phys_cpu)); + } } } diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index 15af0ceb0a66..3f2ae864582e 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c @@ -100,6 +100,72 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state) return -ENOENT; } +/** + * exynos_core_power_down : power down the specified cpu + * @cpu : the cpu to power down + * + * Power down the specified cpu. The sequence must be finished by a + * call to cpu_do_idle() + * + */ +void exynos_cpu_power_down(int cpu) +{ + __raw_writel(0, EXYNOS_ARM_CORE_CONFIGURATION(cpu)); +} + +/** + * exynos_cpu_power_up : power up the specified cpu + * @cpu : the cpu to power up + * + * Power up the specified cpu + */ +void exynos_cpu_power_up(int cpu) +{ + __raw_writel(S5P_CORE_LOCAL_PWR_EN, + EXYNOS_ARM_CORE_CONFIGURATION(cpu)); +} + +/** + * exynos_cpu_power_state : returns the power state of the cpu + * @cpu : the cpu to retrieve the power state from + * + */ +int exynos_cpu_power_state(int cpu) +{ + return (__raw_readl(EXYNOS_ARM_CORE_STATUS(cpu)) & + S5P_CORE_LOCAL_PWR_EN); +} + +/** + * exynos_cluster_power_down : power down the specified cluster + * @cluster : the cluster to power down + */ +void exynos_cluster_power_down(int cluster) +{ + __raw_writel(0, EXYNOS_COMMON_CONFIGURATION(cluster)); +} + +/** + * exynos_cluster_power_up : power up the specified cluster + * @cluster : the cluster to power up + */ +void exynos_cluster_power_up(int cluster) +{ + __raw_writel(S5P_CORE_LOCAL_PWR_EN, + EXYNOS_COMMON_CONFIGURATION(cluster)); +} + +/** + * exynos_cluster_power_state : returns the power state of the cluster + * @cluster : the cluster to retrieve the power state from + * + */ +int exynos_cluster_power_state(int cluster) +{ + return (__raw_readl(EXYNOS_COMMON_STATUS(cluster)) & + S5P_CORE_LOCAL_PWR_EN); +} + /* For Cortex-A9 Diagnostic and Power control register */ static unsigned int save_arm_register[2]; diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h index 4f6a2560d022..4179f6a6d595 100644 --- a/arch/arm/mach-exynos/regs-pmu.h +++ b/arch/arm/mach-exynos/regs-pmu.h @@ -38,6 +38,7 @@ #define S5P_INFORM5 S5P_PMUREG(0x0814) #define S5P_INFORM6 S5P_PMUREG(0x0818) #define S5P_INFORM7 S5P_PMUREG(0x081C) +#define S5P_PMU_SPARE3 S5P_PMUREG(0x090C) #define S5P_ARM_CORE0_LOWPWR S5P_PMUREG(0x1000) #define S5P_DIS_IRQ_CORE0 S5P_PMUREG(0x1004) @@ -105,8 +106,17 @@ #define S5P_GPS_LOWPWR S5P_PMUREG(0x139C) #define S5P_GPS_ALIVE_LOWPWR S5P_PMUREG(0x13A0) -#define S5P_ARM_CORE1_CONFIGURATION S5P_PMUREG(0x2080) -#define S5P_ARM_CORE1_STATUS S5P_PMUREG(0x2084) +#define EXYNOS_ARM_CORE0_CONFIGURATION S5P_PMUREG(0x2000) +#define EXYNOS_ARM_CORE_CONFIGURATION(_nr) \ + (EXYNOS_ARM_CORE0_CONFIGURATION + (0x80 * (_nr))) +#define EXYNOS_ARM_CORE_STATUS(_nr) \ + (EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4) + +#define EXYNOS_ARM_COMMON_CONFIGURATION S5P_PMUREG(0x2500) +#define EXYNOS_COMMON_CONFIGURATION(_nr) \ + (EXYNOS_ARM_COMMON_CONFIGURATION + (0x80 * (_nr))) +#define EXYNOS_COMMON_STATUS(_nr) \ + (EXYNOS_COMMON_CONFIGURATION(_nr) + 0x4) #define S5P_PAD_RET_MAUDIO_OPTION S5P_PMUREG(0x3028) #define S5P_PAD_RET_GPIO_OPTION S5P_PMUREG(0x3108) @@ -313,4 +323,6 @@ #define EXYNOS5_OPTION_USE_RETENTION (1 << 4) +#define EXYNOS5420_SWRESET_KFC_SEL 0x3 + #endif /* __ASM_ARCH_REGS_PMU_H */ |