arm64: dts: rockchip: add BT/wifi nodes to Pinephone Pro

tomfitzhenry · mmind · commit a7e6dbd6ac03 · 2022-10-17T14:02:36.000+02:00
Pinephone Pro includes a AzureWave AW-CM256SM wifi (sdio0) and bt (uart0) combo module, which is based on Cypress CYP43455 (BCM43455). The CYP43455 datasheet ("Power-Up Sequence and Timing") documents: * needing to wait 10ms between consecutive WL_REG_ON toggles * needing to wait 110ms between power-on and SDIO access. Signed-off-by: Tom Fitzhenry <tom@tom-fitzhenry.me.uk> Reviewed-by: Ondřej Jirman <megi@xff.cz> Link: https://lore.kernel.org/r/20221002092809.451501-1-tom@tom-fitzhenry.me.uk Signed-off-by: Heiko Stuebner <heiko@sntech.de>
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
@@ -81,6 +81,27 @@
 		regulator-max-microvolt = <1800000>;
 		vin-supply = <&vcc3v3_sys>;
 	};
+
+	wifi_pwrseq: sdio-wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&rk818 1>;
+		clock-names = "ext_clock";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_enable_h_pin>;
+		/*
+		 * Wait between power-on and SDIO access for CYP43455
+		 * POR circuit.
+		 */
+		post-power-on-delay-ms = <110>;
+		/*
+		 * Wait between consecutive toggles for CYP43455 CBUCK
+		 * regulator discharge.
+		 */
+		power-off-delay-us = <10000>;
+
+		/* WL_REG_ON on module */
+		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
+	};
 };
 
 &cpu_l0 {
@@ -360,11 +381,45 @@
 		};
 	};
 
+	sdio-pwrseq {
+		wifi_enable_h_pin: wifi-enable-h-pin {
+			rockchip,pins = <0 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	sound {
 		vcc1v8_codec_en: vcc1v8-codec-en {
 			rockchip,pins = <3 RK_PA4 RK_FUNC_GPIO &pcfg_pull_down>;
 		};
 	};
+
+	wireless-bluetooth {
+		bt_wake_pin: bt-wake-pin {
+			rockchip,pins = <2 RK_PD2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		bt_host_wake_pin: bt-host-wake-pin {
+			rockchip,pins = <0 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		bt_reset_pin: bt-reset-pin {
+			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&sdio0 {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	disable-wp;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>;
+	sd-uhs-sdr104;
+	status = "okay";
 };
 
 &sdmmc {
@@ -393,6 +448,27 @@
 	status = "okay";
 };
 
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_xfer &uart0_cts &uart0_rts>;
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm4345c5";
+		clocks = <&rk818 1>;
+		clock-names = "lpo";
+		device-wakeup-gpios = <&gpio2 RK_PD2 GPIO_ACTIVE_HIGH>;
+		host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
+		max-speed = <1500000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_host_wake_pin &bt_wake_pin &bt_reset_pin>;
+		shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+		vbat-supply = <&vcc3v3_sys>;
+		vddio-supply = <&vcc_1v8>;
+	};
+};
+
 &uart2 {
 	status = "okay";
 };
