diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-07-22 16:51:33 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2016-11-22 15:33:54 +0100 |
| commit | bb1ea8bf1bed9048dc51cb0b9ccacd63fcb0a3a0 (patch) | |
| tree | 006d699c7d7b350f3ca5da485c669b571b5186f0 | |
| parent | e63604933ec72b268444a59ca357b4e96449480b (diff) | |
ARM: sun5i: chip: Enable Wi-Fi SDIO chip
The WiFi chip is powered through a GPIO and two regulators in parallel.
Since that case is not supported yet, just set them as always on before we
rework the regulator framework to deal with those.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
| -rw-r--r-- | arch/arm/boot/dts/sun5i-r8-chip.dts | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun5i-r8-chip.dts b/arch/arm/boot/dts/sun5i-r8-chip.dts index b68a12374b35..e616084b9495 100644 --- a/arch/arm/boot/dts/sun5i-r8-chip.dts +++ b/arch/arm/boot/dts/sun5i-r8-chip.dts @@ -74,6 +74,13 @@ default-state = "on"; }; }; + + mmc0_pwrseq: mmc0_pwrseq { + compatible = "mmc-pwrseq-simple"; + pinctrl-names = "default"; + pinctrl-0 = <&chip_wifi_reg_on_pin>; + reset-gpios = <&pio 2 19 GPIO_ACTIVE_LOW>; /* PC19 */ + }; }; &be0 { @@ -131,10 +138,15 @@ }; }; +&mmc0_pins_a { + allwinner,pull = <SUN4I_PINCTRL_PULL_UP>; +}; + &mmc0 { pinctrl-names = "default"; pinctrl-0 = <&mmc0_pins_a>; vmmc-supply = <®_vcc3v3>; + mmc-pwrseq = <&mmc0_pwrseq>; bus-width = <4>; non-removable; status = "okay"; @@ -156,6 +168,13 @@ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>; }; + chip_wifi_reg_on_pin: chip_wifi_reg_on_pin@0 { + allwinner,pins = "PC19"; + allwinner,function = "gpio_out"; + allwinner,drive = <SUN4I_PINCTRL_10_MA>; + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>; + }; + chip_id_det_pin: chip_id_det_pin@0 { allwinner,pins = "PG2"; allwinner,function = "gpio_in"; @@ -189,6 +208,28 @@ regulator-always-on; }; +/* + * Both LDO3 and LDO4 are used in parallel to power up the WiFi/BT + * Chip. + * + * If those are not enabled, the SDIO part will not enumerate, and + * since there's no way currently to pass DT infos to an SDIO device, + * we cannot really do better than this ugly hack for now. + */ +®_ldo3 { + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-name = "vcc-wifi-1"; + regulator-always-on; +}; + +®_ldo4 { + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-name = "vcc-wifi-2"; + regulator-always-on; +}; + ®_ldo5 { regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; |