ARM: dts: ifc6410: Add pwrseq support for WLAN

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>
Signed-off-by: Andy Gross <agross@codeaurora.org>

diff --git a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
index c1d5bd7dd7594c4b0d4c66b965929bacab82cc8d..9c71a51a707913fcd75fd1ffc3be9bc37367d36f 100644 (file)
--- 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";
@@ -14,6 +15,17 @@
                stdout-path = "serial0:115200n8";
        };
 
+       pwrseq {
+               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 {
                pinctrl@800000 {
                        card_detect: card_detect {
@@ -207,6 +219,21 @@
                        status = "okay";
                };
 
+               qcom,ssbi@500000 {
+                       pmic@0 {
+                               gpio@150 {
+                                       wlan_default_gpios: wlan-gpios {
+                                               pios {
+                                                       pins = "gpio43";
+                                                       function = "normal";
+                                                       bias-disable;
+                                                       power-source = <PM8921_GPIO_S4>;
+                                               };
+                                       };
+                               };
+                       };
+               };
+
                amba {
                        /* eMMC */
                        sdcc1: sdcc@12400000 {
@@ -228,6 +255,7 @@
                                status = "okay";
                                vmmc-supply = <&ext_3p3v>;
                                vqmmc-supply = <&pm8921_lvs1>;
+                               mmc-pwrseq = <&sdcc4_pwrseq>;
                        };
                };
        };