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ARM: dts: omap3-igep0020: Use MMC pwrseq to init SDIO WiFi

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When the WiFi support was added to the IGEP0020 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: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Enric Balletbo Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Javier Martinez Canillas 2015-12-03 15:02:08 -03:00 committed by Tony Lindgren
parent ca17c4ff6d
commit fd7e118c80
1 changed files with 8 additions and 16 deletions
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24
arch/arm/boot/dts/omap3-igep0020.dts
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@ -15,25 +15,17 @@
model = "IGEPv2 Rev. C (TI OMAP AM/DM37x)";
compatible = "isee,omap3-igep0020", "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 */
};
};
@ -51,8 +43,8 @@
&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;
};