arm64: dts: amlogic: t7: khadas-vim4: Add MMC nodes

Enable and configure the three MMC controllers for the Khadas VIM4 board:
- sd_emmc_a: SDIO interface for the BCM43752 Wi-Fi module
- sd_emmc_b: SD card slot
- sd_emmc_c: eMMC storage

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260326-add-emmc-t7-vim4-v5-9-d3f182b48e9d@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

Author: rclaveau-tech

arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts

@@ -15,6 +15,9 @@
 
 	aliases {
 		serial0 = &uart_a;
+		mmc0 = &sd_emmc_c;
+		mmc1 = &sd_emmc_b;
+		mmc2 = &sd_emmc_a;
 	};
 
 	memory@0 {
@@ -160,6 +163,91 @@
 	pinctrl-names = "default";
 };
 
+/* SDIO */
+&sd_emmc_a {
+	status = "okay";
+	pinctrl-0 = <&sdio_pins>;
+	pinctrl-1 = <&sdio_clk_gate_pins>;
+	pinctrl-names = "default", "clk-gate";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	bus-width = <4>;
+	cap-sd-highspeed;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	cap-sdio-irq;
+	max-frequency = <200000000>;
+	non-removable;
+	disable-wp;
+	no-mmc;
+	no-sd;
+
+	power-domains = <&pwrc PWRC_T7_SDIO_A_ID>;
+
+	keep-power-in-suspend;
+
+	mmc-pwrseq = <&sdio_pwrseq>;
+
+	vmmc-supply = <&vddao_3v3>;
+	vqmmc-supply = <&vddao_1v8>;
+
+	brcmf: wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm43752-fmac", "brcm,bcm4329-fmac";
+	};
+};
+
+/* SD card */
+&sd_emmc_b {
+	status = "okay";
+	pinctrl-0 = <&sdcard_pins>;
+	pinctrl-1 = <&sdcard_clk_gate_pins>;
+	pinctrl-names = "default", "clk-gate";
+
+	bus-width = <4>;
+	cap-sd-highspeed;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	max-frequency = <200000000>;
+	disable-wp;
+	no-sdio;
+	no-mmc;
+
+	power-domains = <&pwrc PWRC_T7_SDIO_B_ID>;
+
+	cd-gpios = <&gpio GPIOC_6 GPIO_ACTIVE_LOW>;
+	vmmc-supply = <&sd_3v3>;
+	vqmmc-supply = <&vddio_c>;
+};
+
+/* eMMC */
+&sd_emmc_c {
+	status = "okay";
+	pinctrl-0 = <&emmc_ctrl_pins>, <&emmc_data_8b_pins>, <&emmc_ds_pins>;
+	pinctrl-1 = <&emmc_clk_gate_pins>;
+	pinctrl-names = "default", "clk-gate";
+
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	max-frequency = <200000000>;
+	disable-wp;
+	non-removable;
+	no-sdio;
+	no-sd;
+
+	power-domains = <&pwrc PWRC_T7_EMMC_ID>;
+
+	vmmc-supply = <&vddio_3v3>;
+	vqmmc-supply = <&vddio_1v8>;
+};
+
 &uart_a {
 	status = "okay";
 	clocks = <&xtal>, <&xtal>, <&xtal>;