From: Ivan T. Ivanov <iivanov@suse.de>
Date: Thu, 28 Aug 2025 13:17:13 +0000 (+0200)
Subject: arm64: dts: broadcom: bcm2712: Add second SDHCI controller node
X-Git-Tag: v6.18-rc1~147^2~39^2~8
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=55ec7b1b97267fd552848e7e3ba70cbbfc1eba73;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: broadcom: bcm2712: Add second SDHCI controller node

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@suse.de>
Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Link: https://lore.kernel.org/r/4ff3a58e98d90a43deb2448b23754808afc7153b.1756386531.git.andrea.porta@suse.com
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
---

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts
index f0883c9035273..411b58c1dddfc 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts
@@ -66,6 +66,18 @@
 		enable-active-high;
 		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_default>;
+		pinctrl-names = "default";
+		gpio = <&gio 28 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <150000>;
+		enable-active-high;
+	};
 };
 
 &pinctrl {
@@ -79,6 +91,29 @@
 		pins = "gpio20";
 		bias-pull-up;
 	};
+
+	sdio2_30_default: sdio2-30-default-state {
+		clk-pins {
+			function = "sd2";
+			pins = "gpio30";
+			bias-disable;
+		};
+		cmd-pins {
+			function = "sd2";
+			pins = "gpio31";
+			bias-pull-up;
+		};
+		dat-pins {
+			function = "sd2";
+			pins = "gpio32", "gpio33", "gpio34", "gpio35";
+			bias-pull-up;
+		};
+	};
+
+	wl_on_default: wl-on-default-state {
+		function = "gpio";
+		pins = "gpio28";
+	};
 };
 
 &pinctrl_aon {
@@ -109,6 +144,23 @@
 	cd-gpios = <&gio_aon 5 GPIO_ACTIVE_LOW>;
 };
 
+&sdio2 {
+	pinctrl-0 = <&sdio2_30_default>;
+	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@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+	};
+};
+
 &soc {
 	firmware: firmware {
 		compatible = "raspberrypi,bcm2835-firmware", "simple-mfd";
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
index a1af86208d9e8..6068cb75ef5aa 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
@@ -285,6 +285,21 @@
 			 */
 		};
 
+		sdio2: mmc@1100000 {
+			compatible = "brcm,bcm2712-sdhci",
+				     "brcm,sdhci-brcmstb";
+			reg = <0x01100000  0x260>,
+			      <0x01100400  0x200>;
+			reg-names = "host", "cfg";
+			interrupts = <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk_emmc2>;
+			clock-names = "sw_sdio";
+			sdhci-caps-mask = <0x0000C000 0x0>;
+			sdhci-caps = <0x0 0x0>;
+			mmc-ddr-3_3v;
+			status = "disabled";
+		};
+
 		gicv2: interrupt-controller@7fff9000 {
 			compatible = "arm,gic-400";
 			reg = <0x7fff9000 0x1000>,