[PATCH 3/4] arm64: dts: rockchip: enable wifi on ArmSoM Sige5

[Alexey Charkov]

ArmSoM Sige5 uses a soldered-on SDIO connected WiFi module. Namely,
board v1.1 uses a Realtek based BL-M8852BS2, while v1.2 uses a Broadcom
based BW3752-50B1.

Add required device tree nodes in the SoC .dtsi for the SDIO controller
and pinctrl / clock wiring in the board .dts for the module itself.

Signed-off-by: Alexey Charkov <alchark at gmail.com>
---
 .../boot/dts/rockchip/rk3576-armsom-sige5.dts      | 36 ++++++++++++++++++++++
 arch/arm64/boot/dts/rockchip/rk3576.dtsi           | 16 ++++++++++
 2 files changed, 52 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts b/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts
index 7ce1fb1380b0863c902fdd9cbc7454ee6011cf92..dcd033859398312f7693bebb7f080ee4f2ecaa32 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts
@@ -219,6 +219,15 @@ vcc_5v0_host: regulator-vcc-5v0-host {
 		pinctrl-names = "default";
 		pinctrl-0 = <&usb_host_pwren>;
 	};
+
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&hym8563>;
+		clock-names = "ext_clock";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_reg_on>;
+		reset-gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_LOW>;
+	};
 };
 
 &combphy1_psu {
@@ -781,6 +790,16 @@ usb_host_pwren: usb-host-pwren {
 			rockchip,pins = <4 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
+
+	wireless-wlan {
+		wifi_wake_host: wifi-wake-host {
+			rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		wifi_reg_on: wifi-reg-on {
+			rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &sai1 {
@@ -808,6 +827,23 @@ &sdhci {
 	status = "okay";
 };
 
+&sdio {
+	bus-width = <4>;
+	cap-sdio-irq;
+	disable-wp;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	no-sd;
+	no-mmc;
+	non-removable;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc_3v3_s3>;
+	vqmmc-supply = <&vcc_1v8_s3>;
+	wakeup-source;
+	status = "okay";
+};
+
 &sdmmc {
 	bus-width = <4>;
 	cap-mmc-highspeed;
diff --git a/arch/arm64/boot/dts/rockchip/rk3576.dtsi b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
index 1086482f04792325dc4c22fb8ceeb27eef59afe4..a09582470bb7f654b711308da1e51fa8571ca1e8 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
@@ -1695,6 +1695,22 @@ sdmmc: mmc at 2a310000 {
 			status = "disabled";
 		};
 
+		sdio: mmc at 2a320000 {
+			compatible = "rockchip,rk3576-dw-mshc", "rockchip,rk3288-dw-mshc";
+			reg = <0x0 0x2a320000 0x0 0x4000>;
+			clocks = <&cru HCLK_SDIO>, <&cru CCLK_SRC_SDIO>;
+			clock-names = "biu", "ciu";
+			fifo-depth = <0x100>;
+			interrupts = <GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>;
+			max-frequency = <200000000>;
+			pinctrl-0 = <&sdmmc1m0_clk &sdmmc1m0_cmd &sdmmc1m0_bus4>;
+			pinctrl-names = "default";
+			power-domains = <&power RK3576_PD_SDGMAC>;
+			resets = <&cru SRST_H_SDIO>;
+			reset-names = "reset";
+			status = "disabled";
+		};
+
 		sdhci: mmc at 2a330000 {
 			compatible = "rockchip,rk3576-dwcmshc", "rockchip,rk3588-dwcmshc";
 			reg = <0x0 0x2a330000 0x0 0x10000>;

-- 
2.49.0