This patch adds the wifi/bt regulator for simple mmc sequence.
Also, add the exteral clock and reset gpios for simple mmmc sequence
on kylin board.
Without this the wifi/bluetooth module doesn't work properly at bootup.
Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx>
---
Changes in v2:
- As Heiko comment, modify it to fit the simple-mmc-sequence.
arch/arm/boot/dts/rk3036-kylin.dts | 53 ++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/arch/arm/boot/dts/rk3036-kylin.dts b/arch/arm/boot/dts/rk3036-kylin.dts
index b2e5f5d..4346ce5 100644
--- a/arch/arm/boot/dts/rk3036-kylin.dts
+++ b/arch/arm/boot/dts/rk3036-kylin.dts
@@ -40,6 +40,7 @@
/dts-v1/;
+#include <dt-bindings/clock/rockchip,rk808.h>
#include "rk3036.dtsi"
/ {
@@ -76,6 +77,43 @@
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_enable_l>;
+ regulator-name = "bt_regulator";
+ };
+
+ wifi_regulator: wifi-regulator {
+ 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>;
+ };
+
+ sdio_pwrseq: sdio-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ clocks = <&rk808 RK808_CLKOUT1>;
+ clock-names = "ext_clock";
+ pinctrl-names = "default";
+ pinctrl-0 = <&bt_wake_h>;
+
+ /*
+ * 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)
+ */
+ reset-gpios = <&gpio0 27 GPIO_ACTIVE_LOW>;
+ ext-vcc-supply = <&wifi_regulator>;
+ };
+
};
&acodec {
@@ -312,6 +350,7 @@
cap-sdio-irq;
default-sample-phase = <90>;
keep-power-in-suspend;
+ mmc-pwrseq = <&sdio_pwrseq>;
non-removable;
num-slots = <1>;
pinctrl-names = "default";
@@ -337,6 +376,20 @@
};
};
+ sdio {
+ wifi_enable_h: wifienable-h {
+ rockchip,pins = <0 26 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+
+ bt_enable_l: bt-enable-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>;
--
1.9.1
--
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