linux-kernel - [PATCH 5/6] arm64: dts: allwinner: pinephone: Add WiFi support

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Message-Id: <20201105054135.24860-6-samuel@sholland.org>
Date:   Wed,  4 Nov 2020 23:41:34 -0600
From:   Samuel Holland <samuel@...lland.org>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
        Samuel Holland <samuel@...lland.org>,
        Ondrej Jirman <megous@...ous.com>
Subject: [PATCH 5/6] arm64: dts: allwinner: pinephone: Add WiFi support

From: Ondrej Jirman <megous@...ous.com>

The PinePhone has a Realtek rtl8723cs WiFi module.

On mainboard revisions 1.0 and 1.1, the reset input is always pulled
high, so no power sequence is needed. On mainboard revision 1.2, the
reset input is connected to PL2.

Signed-off-by: Ondrej Jirman <megous@...ous.com>
Signed-off-by: Samuel Holland <samuel@...lland.org>
---
 .../allwinner/sun50i-a64-pinephone-1.2.dts    |  9 ++++++++
 .../dts/allwinner/sun50i-a64-pinephone.dtsi   | 22 +++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts
index 94e4f11e0215..e7cf9d8577c1 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts
@@ -8,6 +8,11 @@
 / {
 	model = "Pine64 PinePhone (1.2)";
 	compatible = "pine64,pinephone-1.2", "allwinner,sun50i-a64";
+
+	wifi_pwrseq: wifi_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
+	};
 };
 
 &backlight {
@@ -39,6 +44,10 @@ &lis3mdl {
 	interrupts = <1 1 IRQ_TYPE_EDGE_RISING>; /* PB1 */
 };
 
+&mmc1 {
+	mmc-pwrseq = <&wifi_pwrseq>;
+};
+
 &sgm3140 {
 	enable-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */
 	flash-gpios = <&pio 2 3 GPIO_ACTIVE_HIGH>; /* PC3 */
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index 9544d7658794..e173096a7e68 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -13,6 +13,7 @@
 
 / {
 	aliases {
+		ethernet0 = &rtl8723cs;
 		serial0 = &uart0;
 	};
 
@@ -49,6 +50,13 @@ red {
 		};
 	};
 
+	reg_vbat_wifi: vbat-wifi {
+		compatible = "regulator-fixed";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-name = "vbat-wifi";
+	};
+
 	sgm3140: led-controller {
 		compatible = "sgmicro,sgm3140";
 		vin-supply = <&reg_dcdc1>;
@@ -216,6 +224,20 @@ &mmc0 {
 	status = "okay";
 };
 
+&mmc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc1_pins>;
+	vmmc-supply = <&reg_vbat_wifi>;
+	vqmmc-supply = <&reg_dldo4>;
+	bus-width = <4>;
+	non-removable;
+	status = "okay";
+
+	rtl8723cs: wifi@1 {
+		reg = <1>;
+	};
+};
+
 &mmc2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc2_pins>;
-- 
2.26.2