diff mbox

[v1,1/7] ARM: dts: ifc6410: Add pwrseq support for WLAN

Message ID 1438088022-17350-1-git-send-email-srinivas.kandagatla@linaro.org (mailing list archive)
State Superseded, archived
Delegated to: Andy Gross
Headers show

Commit Message

Srinivas Kandagatla July 28, 2015, 12:53 p.m. UTC
This patch adds pwrseq for WLAN which resets the WLAN just before the
SDIO bus is up.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 arch/arm/boot/dts/qcom-apq8064-ifc6410.dts | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

Comments

Stephen Boyd July 29, 2015, 10:55 p.m. UTC | #1
On 07/28/2015 05:53 AM, Srinivas Kandagatla wrote:
> +
> +		sdcc4_pwrseq:pwrseq {

Missing space here between label and node name.

> +			compatible = "mmc-pwrseq-simple";
> +			reset-gpios = <&pm8921_gpio 43 GPIO_ACTIVE_LOW>;
> +		};
> +

Also this node is not part of the SoC so it should be in the root, 
possibly under some sort of power-sequences node so that all the 
sequences are grouped in one place.
Bjorn Andersson July 30, 2015, 12:12 a.m. UTC | #2
On Tue 28 Jul 05:53 PDT 2015, Srinivas Kandagatla wrote:

> This patch adds pwrseq for WLAN which resets the WLAN just before the
> SDIO bus is up.
> 

Does this mean that we have the !power-of-2 patch in mmc on the way?

> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---
>  arch/arm/boot/dts/qcom-apq8064-ifc6410.dts | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
> index 88d6655..df560cf 100644
> --- a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
> +++ b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
> @@ -1,5 +1,6 @@
>  #include "qcom-apq8064-v2.0.dtsi"
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>  
>  / {
>  	model = "Qualcomm APQ8064/IFC6410";
> @@ -206,6 +207,28 @@
>  			status = "okay";
>  		};
>  
> +		qcom,ssbi@500000 {
> +			pmicintc: pmic@0 {
> +				pm8921_gpio: gpio@150 {

These should already be labeled in the apq8064 dtsi (or in a
qcom-pm8921.dtsi).

> +					pinctrl-names = "default";
> +					pinctrl-0 = <&wlan_default_gpios>;

Please move these to the pwrseq node, as that's the consumer of this.

> +					wlan_default_gpios: wlan-gpios {
> +						pios {
> +							pins = "gpio43";
> +							function = "normal";
> +							bias-disable;
> +							power-source = <PM8921_GPIO_S4>;
> +						};
> +					};
> +				};
> +			};
> +		};

Regards,
Bjorn
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Srinivas Kandagatla Aug. 7, 2015, 9:32 a.m. UTC | #3
On 29/07/15 23:55, Stephen Boyd wrote:
> On 07/28/2015 05:53 AM, Srinivas Kandagatla wrote:
>> +
>> +        sdcc4_pwrseq:pwrseq {
>
> Missing space here between label and node name.
>
I will fix this in next version.
>> +            compatible = "mmc-pwrseq-simple";
>> +            reset-gpios = <&pm8921_gpio 43 GPIO_ACTIVE_LOW>;
>> +        };
>> +
>
> Also this node is not part of the SoC so it should be in the root,
> possibly under some sort of power-sequences node so that all the
> sequences are grouped in one place.
Good spot and suggestion. I will do that in next version.

--srini
>
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
index 88d6655..df560cf 100644
--- a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
+++ b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
@@ -1,5 +1,6 @@ 
 #include "qcom-apq8064-v2.0.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 
 / {
 	model = "Qualcomm APQ8064/IFC6410";
@@ -206,6 +207,28 @@ 
 			status = "okay";
 		};
 
+		qcom,ssbi@500000 {
+			pmicintc: pmic@0 {
+				pm8921_gpio: gpio@150 {
+					pinctrl-names = "default";
+					pinctrl-0 = <&wlan_default_gpios>;
+					wlan_default_gpios: wlan-gpios {
+						pios {
+							pins = "gpio43";
+							function = "normal";
+							bias-disable;
+							power-source = <PM8921_GPIO_S4>;
+						};
+					};
+				};
+			};
+		};
+
+		sdcc4_pwrseq:pwrseq {
+			compatible = "mmc-pwrseq-simple";
+			reset-gpios = <&pm8921_gpio 43 GPIO_ACTIVE_LOW>;
+		};
+
 		amba {
 			/* eMMC */
 			sdcc1: sdcc@12400000 {
@@ -227,6 +250,7 @@ 
 				status = "okay";
 				vmmc-supply = <&ext_3p3v>;
 				vqmmc-supply = <&pm8921_lvs1>;
+				mmc-pwrseq = <&sdcc4_pwrseq>;
 			};
 		};
 	};