RZ/G2L SoM has both 64Gb eMMC and micro SD 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 2/OFF for selecting eMMC Set SW1[2] to position 3/ON for selecting micro SD This patch enables eMMC on RZ/G2L SMARC platform by default. Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> --- This patch has dependency upon [1] [1] https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=559045 --- .../boot/dts/renesas/rzg2l-smarc-som.dtsi | 145 ++++++++++++++++++ 1 file changed, 145 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi index da1ee2206e1a..d83072009225 100644 --- a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi +++ b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi @@ -5,14 +5,55 @@ * Copyright (C) 2021 Renesas Electronics Corp. */ +#include <dt-bindings/gpio/gpio.h> #include <dt-bindings/pinctrl/rzg2l-pinctrl.h> +/* SW1[2] should be at position 2/OFF to enable 64Gb eMMC */ +#define EMMC 1 + +/* + * To enable uSD card on CN3, + * SW1[2] should be at position 3/ON. + * Disable eMMC by setting "#define EMMC 0" above. + */ +#define SDHI (!EMMC) + / { memory@48000000 { device_type = "memory"; /* first 128MB is reserved for secure area. */ reg = <0x0 0x48000000 0x0 0x78000000>; }; + + 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; + }; }; &adc { @@ -32,4 +73,108 @@ adc_pins: adc { pinmux = <RZG2L_PORT_PINMUX(9, 0, 2)>; /* ADC_TRG */ }; + + /* + * SDO 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 position 2/OFF to enable 64Gb eMMC + * SW1[2] should be at position 3/ON to enable uSD card CN3 + */ + gpio_sd0_dev_sel { + gpio-hog; + gpios = <RZG2L_GPIO(41, 1) GPIO_ACTIVE_HIGH>; + output-high; + line-name = "gpio_sd0_dev_sel"; + }; + + sd0_pwr_en { + gpio-hog; + gpios = <RZG2L_GPIO(4, 1) GPIO_ACTIVE_HIGH>; + output-high; + line-name = "sd0_pwr_en"; + }; + + 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(47, 0, 2)>; /* SD0_CD */ + }; + }; + + sdhi0_pins_uhs: sd0_uhs { + sd1_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(47, 0, 2)>; /* SD0_CD */ + }; + }; + }; + +#if SDHI +&sdhi0 { + pinctrl-0 = <&sdhi0_pins>; + pinctrl-1 = <&sdhi0_pins_uhs>; + pinctrl-names = "default", "state_uhs"; + + vmmc-supply = <®_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 = <®_3p3v>; + vqmmc-supply = <®_1p8v>; + bus-width = <8>; + mmc-hs200-1_8v; + non-removable; + fixed-emmc-driver-type = <1>; + status = "okay"; +}; +#endif + -- 2.17.1
