Peach Pit and Pi boards have a WiFi module that is always powered but needs toggling an enable pin and ungating a 32kHz reference clock as part of their power sequencing.
Add a dev node for the SDIO slot and a MMC power sequence provider. Signed-off-by: Javier Martinez Canillas <[email protected]> --- arch/arm/boot/dts/exynos5420-peach-pit.dts | 56 ++++++++++++++++++++++++++++++ arch/arm/boot/dts/exynos5800-peach-pi.dts | 56 ++++++++++++++++++++++++++++++ 2 files changed, 112 insertions(+) diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts index c4db5aed8a8c..80db9137abdd 100644 --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -125,6 +125,13 @@ }; }; }; + + mmc1_pwrseq: mmc1_pwrseq { + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpx0 0 GPIO_ACTIVE_LOW>; /* WIFI_EN */ + clocks = <&max77802 MAX77802_CLK_32K_CP>; + clock-names = "ext_clock"; + }; }; &adc { @@ -691,6 +698,25 @@ bus-width = <8>; }; +&mmc_1 { + status = "okay"; + num-slots = <1>; + broken-cd; + cap-sdio-irq; + card-detect-delay = <200>; + clock-frequency = <400000000>; + samsung,dw-mshc-ciu-div = <1>; + samsung,dw-mshc-sdr-timing = <0 1>; + samsung,dw-mshc-ddr-timing = <0 2>; + pinctrl-names = "default"; + pinctrl-0 = <&sd1_clk>, <&sd1_cmd>, <&sd1_int>, <&sd1_bus1>, + <&sd1_bus4>, <&sd1_bus8>, <&wifi_en>; + bus-width = <4>; + cap-sd-highspeed; + mmc-pwrseq = <&mmc1_pwrseq>; + vqmmc-supply = <&buck10_reg>; +}; + &mmc_2 { status = "okay"; num-slots = <1>; @@ -710,6 +736,13 @@ pinctrl-names = "default"; pinctrl-0 = <&mask_tpm_reset>; + wifi_en: wifi-en { + samsung,pins = "gpx0-0"; + samsung,pin-function = <1>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + max98090_irq: max98090-irq { samsung,pins = "gpx0-2"; samsung,pin-function = <0>; @@ -797,6 +830,29 @@ }; }; +&pinctrl_1 { + /* Adjust WiFi drive strengths lower for EMI */ + sd1_clk: sd1-clk { + samsung,pin-drv = <2>; + }; + + sd1_cmd: sd1-cmd { + samsung,pin-drv = <2>; + }; + + sd1_bus1: sd1-bus-width1 { + samsung,pin-drv = <2>; + }; + + sd1_bus4: sd1-bus-width4 { + samsung,pin-drv = <2>; + }; + + sd1_bus8: sd1-bus-width8 { + samsung,pin-drv = <2>; + }; +}; + &pinctrl_2 { pmic_dvs_2: pmic-dvs-2 { samsung,pins = "gpj4-2"; diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts index ca73fb2d2da5..9db2b5927821 100644 --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts @@ -119,6 +119,13 @@ power-supply = <&tps65090_fet6>; backlight = <&backlight>; }; + + mmc1_pwrseq: mmc1_pwrseq { + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpx0 0 GPIO_ACTIVE_LOW>; /* WIFI_EN */ + clocks = <&max77802 MAX77802_CLK_32K_CP>; + clock-names = "ext_clock"; + }; }; &adc { @@ -653,6 +660,25 @@ bus-width = <8>; }; +&mmc_1 { + status = "okay"; + num-slots = <1>; + broken-cd; + cap-sdio-irq; + card-detect-delay = <200>; + clock-frequency = <400000000>; + samsung,dw-mshc-ciu-div = <1>; + samsung,dw-mshc-sdr-timing = <0 1>; + samsung,dw-mshc-ddr-timing = <0 2>; + pinctrl-names = "default"; + pinctrl-0 = <&sd1_clk>, <&sd1_cmd>, <&sd1_int>, <&sd1_bus1>, + <&sd1_bus4>, <&sd1_bus8>, <&wifi_en>; + bus-width = <4>; + cap-sd-highspeed; + mmc-pwrseq = <&mmc1_pwrseq>; + vqmmc-supply = <&buck10_reg>; +}; + &mmc_2 { status = "okay"; num-slots = <1>; @@ -672,6 +698,13 @@ pinctrl-names = "default"; pinctrl-0 = <&mask_tpm_reset>; + wifi_en: wifi-en { + samsung,pins = "gpx0-0"; + samsung,pin-function = <1>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + max98091_irq: max98091-irq { samsung,pins = "gpx0-2"; samsung,pin-function = <0>; @@ -759,6 +792,29 @@ }; }; +&pinctrl_1 { + /* Adjust WiFi drive strengths lower for EMI */ + sd1_clk: sd1-clk { + samsung,pin-drv = <2>; + }; + + sd1_cmd: sd1-cmd { + samsung,pin-drv = <2>; + }; + + sd1_bus1: sd1-bus-width1 { + samsung,pin-drv = <2>; + }; + + sd1_bus4: sd1-bus-width4 { + samsung,pin-drv = <2>; + }; + + sd1_bus8: sd1-bus-width8 { + samsung,pin-drv = <2>; + }; +}; + &pinctrl_2 { pmic_dvs_2: pmic-dvs-2 { samsung,pins = "gpj4-2"; -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
