[PATCH 6/7] arm64: dts: broadcom: bcm2712: Add second SDHCI controller node

[Ivan T. Ivanov]

Add SDIO2 node. On RPi5 it is connected to WiFi chip.
Add related pin, gpio and regulator definitions and
add WiFi node. With this and firmware already provided by
distributions, at least on openSUSE Tumbleweed, this is
sufficient to make WiFi operational on RPi5 \o/.

Signed-off-by: Ivan T. Ivanov <iivanov at suse.de>
---
 .../boot/dts/broadcom/bcm2712-rpi-5-b.dts     | 55 +++++++++++++++++++
 arch/arm64/boot/dts/broadcom/bcm2712.dtsi     | 13 +++++
 2 files changed, 68 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
index 06e926af16b7..b6bfe0abb774 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
@@ -46,6 +46,20 @@ sd_vcc_reg: sd-vcc-reg {
 		gpios = <&gio_aon 4 GPIO_ACTIVE_HIGH>;
 	};
 
+	wl_on_reg: wl-on-reg {
+		compatible = "regulator-fixed";
+		regulator-name = "wl-on-regulator";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		pinctrl-0 = <&wl_on_pins>;
+		pinctrl-names = "default";
+
+		gpio = <&gio 28 GPIO_ACTIVE_HIGH>;
+
+		startup-delay-us = <150000>;
+		enable-active-high;
+	};
+
 	pwr-button {
 		compatible = "gpio-keys";
 
@@ -80,6 +94,25 @@ &sdio1 {
 	cd-gpios = <&gio_aon 5 GPIO_ACTIVE_LOW>;
 };
 
+/* SDIO2 drives the WLAN interface */
+&sdio2 {
+	pinctrl-0 = <&sdio2_30_pins>;
+	pinctrl-names = "default";
+	bus-width = <4>;
+	vmmc-supply = <&wl_on_reg>;
+	sd-uhs-ddr50;
+	non-removable;
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	wifi: wifi at 1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		local-mac-address = [00 00 00 00 00 00];
+	};
+};
+
 &pinctrl_aon {
 	emmc_aon_cd_pins: emmc-aon-cd-pins {
 		function = "sd_card_g";
@@ -95,9 +128,31 @@ pwr_button_pins: pwr-button-pins {
 		bias-pull-up;
 	};
 
+	wl_on_pins: wl-on-pins {
+		function = "gpio";
+		pins = "gpio28";
+	};
+
 	emmc_sd_pulls: emmc-sd-pulls {
 		pins = "emmc_cmd", "emmc_dat0", "emmc_dat1", "emmc_dat2", "emmc_dat3";
 		bias-pull-up;
 	};
 
+	sdio2_30_pins: sdio2-30-pins {
+		pin-clk {
+			function = "sd2";
+			pins = "gpio30";
+			bias-disable;
+		};
+		pin-cmd {
+			function = "sd2";
+			pins = "gpio31";
+			bias-pull-up;
+		};
+		pins-dat {
+			function = "sd2";
+			pins = "gpio32", "gpio33", "gpio34", "gpio35";
+			bias-pull-up;
+		};
+	};
 };
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
index 39d2419ffce2..3c0663dc6712 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
@@ -27,6 +27,19 @@ sdio1: mmc at 1000fff000 {
 			mmc-ddr-3_3v;
 		};
 
+		sdio2: mmc at 1001100000 {
+			compatible = "brcm,bcm2712-sdhci";
+			reg = <0x10 0x01100000  0x260>,
+			      <0x10 0x01100400  0x200>;
+			reg-names = "host", "cfg";
+			interrupts = <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk_emmc2>;
+			sdhci-caps-mask = <0x0000C000 0x0>;
+			sdhci-caps = <0x0 0x0>;
+			mmc-ddr-3_3v;
+			status = "disabled";
+		};
+
 		gicv2: interrupt-controller at 107fff9000 {
 			interrupt-controller;
 			#interrupt-cells = <3>;
-- 
2.43.0