[PATCH 12/14] ARM: dts: qs600: add pwrseq support to WLAN

[Igor Grinberg]

On 09/18/15 15:32, Srinivas Kandagatla wrote:
> Add pwrseq support to sdcc4 which would enable a proper reset of WLAN
> without ugly hacks in the board support file.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>

Thanks Srini!

Acked-by: Igor Grinberg <grinberg at compulab.co.il>

> ---
>  arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts | 32 +++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts b/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts
> index 8aac3be..cc9d942 100644
> --- a/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts
> +++ b/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts
> @@ -1,4 +1,6 @@
>  #include "qcom-apq8064-v2.0.dtsi"
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>  
>  / {
>  	model = "CompuLab CM-QS600";
> @@ -12,6 +14,20 @@
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	pwrseq {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +		compatible = "simple-bus";
> +
> +		sdcc4_pwrseq: sdcc4_pwrseq {
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&wlan_default_gpios>;
> +			compatible = "mmc-pwrseq-simple";
> +			reset-gpios = <&pm8921_gpio 43 GPIO_ACTIVE_LOW>;
> +		};
> +	};
> +
>  	soc {
>  		rpm at 108000 {
>  			regulators {
> @@ -154,6 +170,21 @@
>  			regulator-always-on;
>  		};
>  
> +		qcom,ssbi at 500000 {
> +			pmic at 0 {
> +				gpio at 150 {
> +					wlan_default_gpios: wlan-gpios {
> +						pios {
> +							pins = "gpio43";
> +							function = "normal";
> +							bias-disable;
> +							power-source = <PM8921_GPIO_S4>;
> +						};
> +					};
> +				};
> +			};
> +		};
> +
>  		amba {
>  			/* eMMC */
>  			sdcc1: sdcc at 12400000 {
> @@ -172,6 +203,7 @@
>  				status = "okay";
>  				vmmc-supply = <&v3p3_fixed>;
>  				vqmmc-supply = <&v3p3_fixed>;
> +				mmc-pwrseq = <&sdcc4_pwrseq>;
>  			};
>  		};
>  	};
> 

-- 
Regards,
Igor.