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Commit 3cb18180 authored by Javier Martinez Canillas's avatar Javier Martinez Canillas Committed by Kukjin Kim
Browse files

ARM: dts: Add WiFi module support for Peach boards 



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: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: default avatarKukjin Kim <kgene@kernel.org>
parent af6ad88a

arch/arm/boot/dts/exynos5420-peach-pit.dts

+56 −0
Original line number Diff line number Diff line
@@ -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";

arch/arm/boot/dts/exynos5800-peach-pi.dts

+56 −0
Original line number Diff line number Diff line
@@ -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";