Commit 7ca0ce64 authored by Biju Das's avatar Biju Das Committed by Geert Uytterhoeven
Browse files

arm64: dts: renesas: rzg2lc-smarc-som: Enable eMMC on SMARC platform 



RZ/G2LC SoM has both 64 GB eMMC and microSD connected to SDHI0.

Both these interfaces are mutually exclusive and the SD0 device
selection is based on the XOR between GPIO_SD0_DEV_SEL and SW1[2]
switch position.

This patch sets GPIO_SD0_DEV_SEL to high in DT. Use the below switch
setting logic for device selection between eMMC and microSD slot
connected to SDHI0.

Set SW1[2] to position OFF for selecting eMMC
Set SW1[2] to position ON for selecting microSD

This patch enables eMMC on RZ/G2LC SMARC platform by default.

Signed-off-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220117075130.6198-1-biju.das.jz@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent f91c4c74

arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi

+142 −0
Original line number Diff line number Diff line
@@ -8,6 +8,16 @@ 
#include <dt-bindings/gpio/gpio.h>

#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>



/* SW1[2] should be at OFF position to enable 64 GB eMMC */

#define EMMC	1



/*

 * To enable uSD card on CN3,

 * SW1[2] should be at ON position.

 * Disable eMMC by setting "#define EMMC	0" above.

 */

#define SDHI	(!EMMC)



/ {

	aliases {

		ethernet0 = &eth0;
@@ -22,6 +32,36 @@ memory@48000000 { 
		/* first 128MB is reserved for secure area. */

		reg = <0x0 0x48000000 0x0 0x38000000>;

	};



	reg_1p8v: regulator0 {

		compatible = "regulator-fixed";

		regulator-name = "fixed-1.8V";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

		regulator-boot-on;

		regulator-always-on;

	};



	reg_3p3v: regulator1 {

		compatible = "regulator-fixed";

		regulator-name = "fixed-3.3V";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		regulator-boot-on;

		regulator-always-on;

	};



	vccq_sdhi0: regulator-vccq-sdhi0 {

		compatible = "regulator-gpio";



		regulator-name = "SDHI0 VccQ";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

		states = <3300000 1>, <1800000 0>;

		regulator-boot-on;

		gpios = <&pinctrl RZG2L_GPIO(39, 0) GPIO_ACTIVE_HIGH>;

		regulator-always-on;

	};

};



&eth0 {
@@ -72,5 +112,107 @@ eth0_pins: eth0 { 
			 <RZG2L_PORT_PINMUX(26, 0, 1)>, /* ET0_RXD2 */

			 <RZG2L_PORT_PINMUX(26, 1, 1)>; /* ET0_RXD3 */

	};



	gpio-sd0-pwr-en-hog {

		gpio-hog;

		gpios = <RZG2L_GPIO(18, 1) GPIO_ACTIVE_HIGH>;

		output-high;

		line-name = "gpio_sd0_pwr_en";

	};



	/*

	 * SD0 device selection is XOR between GPIO_SD0_DEV_SEL and SW1[2]

	 * The below switch logic can be used to select the device between

	 * eMMC and microSD, after setting GPIO_SD0_DEV_SEL to high in DT.

	 * SW1[2] should be at OFF position to enable 64 GB eMMC

	 * SW1[2] should be at position ON to enable uSD card CN3

	 */

	gpio-sd0-dev-sel-hog {

		gpio-hog;

		gpios = <RZG2L_GPIO(40, 2) GPIO_ACTIVE_HIGH>;

		output-high;

		line-name = "gpio_sd0_dev_sel";

	};



	sdhi0_emmc_pins: sd0emmc {

		sd0_emmc_data {

			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3",

			       "SD0_DATA4", "SD0_DATA5", "SD0_DATA6", "SD0_DATA7";

			power-source = <1800>;

		};



		sd0_emmc_ctrl {

			pins = "SD0_CLK", "SD0_CMD";

			power-source = <1800>;

		};



		sd0_emmc_rst {

			pins = "SD0_RST#";

			power-source = <1800>;

		};

	};



	sdhi0_pins: sd0 {

		sd0_data {

			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";

			power-source = <3300>;

		};



		sd0_ctrl {

			pins = "SD0_CLK", "SD0_CMD";

			power-source = <3300>;

		};



		sd0_mux {

			pinmux = <RZG2L_PORT_PINMUX(18, 0, 1)>; /* SD0_CD */

		};

	};



	sdhi0_pins_uhs: sd0_uhs {

		sd0_data_uhs {

			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";

			power-source = <1800>;

		};



		sd0_ctrl_uhs {

			pins = "SD0_CLK", "SD0_CMD";

			power-source = <1800>;

		};



		sd0_mux_uhs {

			pinmux = <RZG2L_PORT_PINMUX(18, 0, 1)>; /* SD0_CD */

		};

	};

};



#if SDHI

&sdhi0 {

	pinctrl-0 = <&sdhi0_pins>;

	pinctrl-1 = <&sdhi0_pins_uhs>;

	pinctrl-names = "default", "state_uhs";



	vmmc-supply = <&reg_3p3v>;

	vqmmc-supply = <&vccq_sdhi0>;

	bus-width = <4>;

	sd-uhs-sdr50;

	sd-uhs-sdr104;

	status = "okay";

};

#endif



#if EMMC

&sdhi0 {

	pinctrl-0 = <&sdhi0_emmc_pins>;

	pinctrl-1 = <&sdhi0_emmc_pins>;

	pinctrl-names = "default", "state_uhs";



	vmmc-supply = <&reg_3p3v>;

	vqmmc-supply = <&reg_1p8v>;

	bus-width = <8>;

	mmc-hs200-1_8v;

	non-removable;

	fixed-emmc-driver-type = <1>;

	status = "okay";

};

#endif