[PATCH 4/5] ARM: dts: add the wifi/bt regulator for kylin board

Caesar Wang
2015-12-22T09:33:52Z

Without this the wifi/bluetooth module doesn't work
properly at bootup.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Patchset: Rockchip kylin board Patch[6/6], bring up kylin board.
We need add the wifi regulator to control the power.

(am https://patchwork.kernel.org/patch/7873721/)
---

arch/arm/boot/dts/rk3036-kylin.dts | 43 +++++++++++++++++++++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/rk3036-kylin.dts b/arch/arm/boot/dts/rk3036-kylin.dts
index 2ef38be..ed0466f 100644
--- a/arch/arm/boot/dts/rk3036-kylin.dts
+++ b/arch/arm/boot/dts/rk3036-kylin.dts
@@ -76,6 +76,32 @@
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_rst_l>;
+ regulator-name = "bt_regulator";
+ };
+
+ wifi_regulator: wifi-regulator {
+ /*
+ * 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)
+ */
+
+ 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>;
+ };
};

&acodec {
@@ -303,12 +329,13 @@
sd-uhs-sdr50;
sd-uhs-sdr104;
cap-sdio-irq;
+ card-external-vcc-supply = <&wifi_regulator>;
default-sample-phase = <90>;
keep-power-in-suspend;
non-removable;
num-slots = <1>;
pinctrl-names = "default";
- pinctrl-0 = <&sdio_clk &sdio_cmd &sdio_bus4>;
+ pinctrl-0 = <&sdio_clk &sdio_cmd &sdio_bus4 &bt_wake_h>;
};

&uart2 {
@@ -330,6 +357,20 @@
};
};

+ sdio {
+ wifi_enable_h: wifienable-h {
+ rockchip,pins = <0 26 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+
+ bt_rst_l: bt-rst-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