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Commit 89c6f2e5 authored by Javier Martinez Canillas's avatar Javier Martinez Canillas Committed by Tony Lindgren
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ARM: dts: omap3-igep0030: Use MMC pwrseq to init SDIO WiFi 



When the WiFi support was added to the IGEP0030 board, the MMC subsystem
did not provide a mechanism to define power sequence providers. So a DT
hack was used to toggle the WiFi chip reset and power down pins by using
fake fixed regulators whose enable GPIO was the GPIOs connected to these
pins.

But now the simple MMC power sequence provider can be used for this and
the workaround removed.

Signed-off-by: default avatarJavier Martinez Canillas <javier@osg.samsung.com>
Acked-by: default avatarEnric Balletbo Serra <enric.balletbo@collabora.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent fd7e118c

arch/arm/boot/dts/omap3-igep0030.dts

+8 −16
Original line number Diff line number Diff line
@@ -15,25 +15,17 @@ 
	model = "IGEP COM MODULE Rev. E (TI OMAP AM/DM37x)";

	compatible = "isee,omap3-igep0030", "ti,omap36xx", "ti,omap3";



	/* Regulator to trigger the WIFI_PDN signal of the Wifi module */

	lbee1usjyc_pdn: lbee1usjyc_pdn {

	vmmcsdio_fixed: fixedregulator-mmcsdio {

		compatible = "regulator-fixed";

		regulator-name = "regulator-lbee1usjyc-pdn";

		regulator-name = "vmmcsdio_fixed";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		gpio = <&gpio5 10 GPIO_ACTIVE_HIGH>;	/* gpio_138 - WIFI_PDN */

		startup-delay-us = <10000>;

		enable-active-high;

	};



	/* Regulator to trigger the RESET_N_W signal of the Wifi module */

	lbee1usjyc_reset_n_w: lbee1usjyc_reset_n_w {

		compatible = "regulator-fixed";

		regulator-name = "regulator-lbee1usjyc-reset-n-w";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		gpio = <&gpio5 11 GPIO_ACTIVE_HIGH>;	/* gpio_139 - RESET_N_W */

		enable-active-high;

	mmc2_pwrseq: mmc2_pwrseq {

		compatible = "mmc-pwrseq-simple";

		reset-gpios = <&gpio5 11 GPIO_ACTIVE_LOW>,	/* gpio_139 - RESET_N_W */

			      <&gpio5 10 GPIO_ACTIVE_LOW>;	/* gpio_138 - WIFI_PDN */

	};

};
@@ -62,8 +54,8 @@ 
&mmc2 {

	pinctrl-names = "default";

	pinctrl-0 = <&mmc2_pins &lbee1usjyc_pins>;

	vmmc-supply = <&lbee1usjyc_pdn>;

	vmmc_aux-supply = <&lbee1usjyc_reset_n_w>;

	vmmc-supply = <&vmmcsdio_fixed>;

	mmc-pwrseq = <&mmc2_pwrseq>;

	bus-width = <4>;

	non-removable;

};