This patch adds pwrseq for WLAN which resets the WLAN just before the
SDIO bus is up.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
arch/arm/boot/dts/qcom-apq8064-ifc6410.dts | 31 ++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts
index 88d6655..b1f9ddb 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";
@@ -10,6 +11,20 @@
serial1 = &gsbi6_serial;
};
+ 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 {
pinctrl@800000 {
card_detect: card_detect {
@@ -206,6 +221,21 @@
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 {
@@ -227,6 +257,7 @@
status = "okay";
vmmc-supply = <&ext_3p3v>;
vqmmc-supply = <&pm8921_lvs1>;
+ mmc-pwrseq = <&sdcc4_pwrseq>;
};
};
};
--
1.9.1
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