boards: nxp: mimxrt700: enable usdhc0 instance

enable usdhc0 clock
config usdhc0 pin
enable mmc-disk:SD2

Signed-off-by: Lucien Zhao <lucien.zhao@nxp.com>

Author: lucien-nxp

boards/nxp/mimxrt700_evk/CMakeLists.txt

@@ -26,3 +26,7 @@ if(CONFIG_NXP_IMXRT_BOOT_HEADER)
   zephyr_library_sources(${RT7XX_BOARD_DIR}/flash_config/flash_config.c)
   zephyr_library_include_directories(${RT7XX_BOARD_DIR}/flash_config)
 endif()
+
+if(CONFIG_IMX_USDHC)
+  zephyr_compile_definitions(FSL_SDK_ENABLE_DRIVER_CACHE_CONTROL=1)
+endif()

boards/nxp/mimxrt700_evk/board.c

@@ -434,6 +434,22 @@ void board_early_init_hook(void)
 				DT_PROP_BY_PHANDLE(DT_NODELABEL(usb0), clocks, clock_frequency));
 #endif
 
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(usdhc0), okay) && CONFIG_IMX_USDHC
+	/*Make sure USDHC ram buffer has power up*/
+	POWER_DisablePD(kPDRUNCFG_APD_SDHC0_SRAM);
+	POWER_DisablePD(kPDRUNCFG_PPD_SDHC0_SRAM);
+	POWER_DisablePD(kPDRUNCFG_PD_LPOSC);
+	POWER_ApplyPD();
+
+	/* USDHC0 */
+	/* usdhc depend on 32K clock also */
+	CLOCK_AttachClk(kLPOSC_DIV32_to_32K_WAKE);
+	CLOCK_InitAudioPfd(kCLOCK_Pfd0, 24U); /* Target 400MHZ. */
+	CLOCK_AttachClk(kAUDIO_PLL_PFD0_to_SDIO0);
+	CLOCK_SetClkDiv(kCLOCK_DivSdio0Clk, 1);
+	RESET_ClearPeripheralReset(kUSDHC0_RST_SHIFT_RSTn);
+#endif
+
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(wwdt0))
 	CLOCK_AttachClk(kLPOSC_to_WWDT0);
 #endif

boards/nxp/mimxrt700_evk/mimxrt700_evk-pinctrl.dtsi

@@ -101,4 +101,43 @@
 			input-enable;
 		};
 	};
+
+	pinmux_usdhc: pinmux_usdhc {
+		group0 {
+			pinmux = <SDHC0_CMD_PIO7_1>,
+				 <USDHC0_USDHC_DATA0_PIO7_6>,
+				 <USDHC0_USDHC_DATA1_PIO7_7>,
+				 <USDHC0_USDHC_DATA2_PIO7_8>,
+				 <USDHC0_USDHC_DATA3_PIO7_9>,
+				 <USDHC0_USDHC_DATA4_PIO7_2>,
+				 <USDHC0_USDHC_DATA5_PIO7_3>,
+				 <USDHC0_USDHC_DATA6_PIO7_4>,
+				 <USDHC0_USDHC_DATA7_PIO7_5>,
+				 <SDHC0_CARD_DET_N_PIO7_11>;
+			bias-pull-up;
+			input-enable;
+			slew-rate = "normal";
+			drive-strength = "normal";
+		};
+		group1 {
+			pinmux = <SDHC0_CLK_PIO7_0>;
+			bias-pull-down;
+			input-enable;
+			slew-rate = "normal";
+			drive-strength = "normal";
+		};
+		group2 {
+			pinmux = <GPIO7_GPIO12_PIO7_12>;
+			bias-pull-down;
+			slew-rate = "normal";
+			drive-strength = "normal";
+		};
+		group3 {
+			pinmux = <SDHC0_DS_PIO7_10>;
+			bias-pull-down;
+			input-enable;
+			slew-rate = "slow";
+			drive-strength = "normal";
+		};
+	};
 };

boards/nxp/mimxrt700_evk/mimxrt700_evk_mimxrt798s_cm33_cpu0.dts

@@ -22,6 +22,7 @@
 		sw1 = &user_button_2;
 		watchdog0 = &wwdt0;
 		pwm-0 = &sc_timer;
+		sdhc0 = &usdhc0;
 	};
 
 	chosen {
@@ -159,6 +160,10 @@ zephyr_lcdif: &lcdif {};
 	status = "okay";
 };
 
+&gpio7 {
+	status = "okay";
+};
+
 &green_led {
 	status = "okay";
 };
@@ -211,6 +216,20 @@ zephyr_udc0: &usb0 {
 	tx-cal-45-dm-ohms = <6>;
 };
 
+&usdhc0 {
+	status = "okay";
+	pwr-gpios = <&gpio7 12 GPIO_ACTIVE_HIGH>;
+	mmc {
+		compatible = "zephyr,mmc-disk";
+		disk-name = "SD2";
+		status = "okay";
+	};
+	pinctrl-0 = <&pinmux_usdhc>;
+	pinctrl-names = "default";
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+};
+
 &wwdt0 {
 	status = "okay";
 };

boards/nxp/mimxrt700_evk/mimxrt700_evk_mimxrt798s_cm33_cpu0.yaml

@@ -18,6 +18,7 @@ supported:
   - gpio
   - i2c
   - uart
+  - sdhc
   - spi
   - adc
   - usb_device

boards/nxp/mimxrt700_evk/mimxrt700_evk_mimxrt798s_cm33_cpu0_defconfig

@@ -1,5 +1,5 @@
 #
-# Copyright 2024 NXP
+# Copyright 2024-2025 NXP
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -15,3 +15,6 @@ CONFIG_HW_STACK_PROTECTION=y
 
 # Enable TrustZone-M
 CONFIG_TRUSTED_EXECUTION_SECURE=y
+# Nocache memory options
+CONFIG_NOCACHE_MEMORY=y
+CONFIG_IMX_USDHC_DMA_SUPPORT=n