Re: [PATCH 4/5] ARM: dts: add the wifi/bt regulator for kylin board

Heiko Stübner
2015-12-22T09:50:32Z

Hi Caesaer,

Am Dienstag, 22. Dezember 2015, 17:33:52 schrieb Caesar Wang:
> Without this the wifi/bluetooth module doesn't work
> properly at bootup.
>
> Signed-off-by: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>
> Patchset: Rockchip kylin board Patch[6/6], bring up kylin board.
> We need add the wifi regulator to control the power.
>
> (am https://patchwork.kernel.org/patch/7873721/)
> ---
>
> arch/arm/boot/dts/rk3036-kylin.dts | 43
> +++++++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1
> deletion(-)
>
> diff --git a/arch/arm/boot/dts/rk3036-kylin.dts
> b/arch/arm/boot/dts/rk3036-kylin.dts index 2ef38be..ed0466f 100644
> --- a/arch/arm/boot/dts/rk3036-kylin.dts
> +++ b/arch/arm/boot/dts/rk3036-kylin.dts
> @@ -76,6 +76,32 @@
> regulator-always-on;
> regulator-boot-on;
> };
> +
> + bt_regulator: bt-regulator {
> + compatible = "regulator-fixed";
> + enable-active-high;
> + gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&bt_rst_l>;
> + regulator-name = "bt_regulator";
> + };
> +
> + wifi_regulator: wifi-regulator {
> + /*
> + * On the module itself this is one of these (depending
> + * on the actual card populated):
> + * - SDIO_RESET_L_WL_REG_ON
> + * - PDN (power down when low)
> + */
> +
> + compatible = "regulator-fixed";
> + enable-active-high;
> + gpio = <&gpio0 26 GPIO_ACTIVE_HIGH>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&wifi_enable_h>;
> + regulator-name = "wifi_regulator";
> + vin-supply = <&bt_regulator>;
> + };
> };
>
> &acodec {
> @@ -303,12 +329,13 @@
> sd-uhs-sdr50;
> sd-uhs-sdr104;
> cap-sdio-irq;
> + card-external-vcc-supply = <&wifi_regulator>;

as I said in our chat, that concept didn't make it into the kernel. mmc-power-
sequences are the new thing. Please look into the sdio-pwrseq node in rk3288-
veyron.dtsi for examples.

Heiko

> default-sample-phase = <90>;
> keep-power-in-suspend;
> non-removable;
> num-slots = <1>;
> pinctrl-names = "default";
> - pinctrl-0 = <&sdio_clk &sdio_cmd &sdio_bus4>;
> + pinctrl-0 = <&sdio_clk &sdio_cmd &sdio_bus4 &bt_wake_h>;
> };
>
> &uart2 {
> @@ -330,6 +357,20 @@
> };
> };
>
> + sdio {
> + wifi_enable_h: wifienable-h {
> + rockchip,pins = <0 26 RK_FUNC_GPIO &pcfg_pull_none>;
> + };
> +
> + bt_rst_l: bt-rst-l {
> + rockchip,pins = <2 9 RK_FUNC_GPIO &pcfg_pull_none>;
> + };
> +
> + bt_wake_h: bt-wake-h {
> + rockchip,pins = <2 8 RK_FUNC_GPIO &pcfg_pull_default>;
> + };
> + };
> +
> sleep {
> global_pwroff: global-pwroff {
> rockchip,pins = <2 7 RK_FUNC_1 &pcfg_pull_none>;

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