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

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Date:	Tue, 22 Dec 2015 17:33:52 +0800
From:	Caesar Wang <wxt@...k-chips.com>
To:	heiko@...ech.de
Cc:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, keescook@...gle.com,
	leozwang@...gle.com, leecam@...gle.com,
	Caesar Wang <wxt@...k-chips.com>
Subject: [PATCH 4/5] ARM: dts: add the wifi/bt regulator for kylin board

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

Signed-off-by: Caesar Wang <wxt@...k-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

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