From ea805f1a15ff797f935bba6b7bd7fb995b81ed4f Mon Sep 17 00:00:00 2001
From: Patrick Yavitz <pyavitz@xxxxx.com>
Date: Wed, 2 Aug 2023 19:28:24 -0400
Subject: [PATCH] arch: arm64: dts: amlogic: add wifi/bt support to bananapi m5

The BPI-M5 has an optional RTL8822CS WiFi/BT mezzanine board. Describe
the board but mark the sd_emmc_a and uart_A nodes disabled so they can
be enabled via overlay or fdtput when the board is connected.

Signed-off-by: Patrick Yavitz <pyavitz@xxxxx.com>
---
 .../dts/amlogic/meson-sm1-bananapi-m5.dts     | 66 ++++++++++++++++++-
 1 file changed, 65 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
index f045bf851638..5f6071ee84a6 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
@@ -25,6 +25,20 @@ cvbs_connector_in: endpoint {
 		};
 	};
 
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>;
+		clocks = <&wifi32k>;
+		clock-names = "ext_clock";
+	};
+
+	wifi32k: wifi32k {
+		compatible = "pwm-clock";
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		pwms = <&pwm_ef 0 30518 0>; /* PWM_E at 32.768KHz */
+	};
+
 	sound {
 		compatible = "amlogic,axg-sound-card";
 		model = "BPI-M5";
@@ -149,7 +163,6 @@ &acodec {
 	status = "okay";
 };
 
-
 &clkc_audio {
 	status = "okay";
 };
@@ -172,6 +185,42 @@ &frddr_c {
 	status = "okay";
 };
 
+&pwm_ef {
+	status = "okay";
+	pinctrl-0 = <&pwm_e_pins>;
+	pinctrl-names = "default";
+};
+
+/* SDIO */
+&sd_emmc_a {
+	/* enable if WiFi/BT board connected */
+	status = "disabled";
+	pinctrl-0 = <&sdio_pins>;
+	pinctrl-1 = <&sdio_clk_gate_pins>;
+	pinctrl-names = "default", "clk-gate";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	bus-width = <4>;
+	sd-uhs-sdr104;
+	max-frequency = <50000000>;
+
+	non-removable;
+	disable-wp;
+
+	/* WiFi firmware requires power in suspend */
+	keep-power-in-suspend;
+
+	mmc-pwrseq = <&sdio_pwrseq>;
+
+	vmmc-supply = <&vddao_3v3>;
+	vqmmc-supply = <&vddao_1v8>;
+
+	rtl8822cs: wifi@1 {
+		reg = <1>;
+	};
+};
+
 &tdmif_b {
 	status = "okay";
 };
@@ -219,3 +268,18 @@ &toddr_b {
 &toddr_c {
 	status = "okay";
 };
+
+&uart_A {
+	/* enable if WiFi/BT board connected */
+	status = "disabled";
+	pinctrl-0 = <&uart_a_pins>, <&uart_a_cts_rts_pins>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+
+	bluetooth {
+		compatible = "realtek,rtl8822cs-bt";
+		enable-gpios  = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+		host-wake-gpios = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>;
+		device-wake-gpios = <&gpio GPIOX_18 GPIO_ACTIVE_HIGH>;
+	};
+};
-- 
2.39.2