diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi b/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi new file mode 100644 index 000000000..27fb06ce9 --- /dev/null +++ b/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Google Veyron (and derivatives) fragment for sdmmc cards + * + * Copyright 2015 Google, Inc + */ + +&io_domains { + sdcard-supply = <&vccio_sd>; +}; + +&pinctrl { + sdmmc { + /* + * We run sdmmc at max speed; bump up drive strength. + * We also have external pulls, so disable the internal ones. + */ + sdmmc_bus4: sdmmc-bus4 { + rockchip,pins = <6 RK_PC0 1 &pcfg_pull_none_drv_8ma>, + <6 RK_PC1 1 &pcfg_pull_none_drv_8ma>, + <6 RK_PC2 1 &pcfg_pull_none_drv_8ma>, + <6 RK_PC3 1 &pcfg_pull_none_drv_8ma>; + }; + + sdmmc_clk: sdmmc-clk { + rockchip,pins = <6 RK_PC4 1 &pcfg_pull_none_drv_8ma>; + }; + + sdmmc_cmd: sdmmc-cmd { + rockchip,pins = <6 RK_PC5 1 &pcfg_pull_none_drv_8ma>; + }; + + /* + * Builtin CD line is hooked to ground to prevent JTAG at boot + * (and also to get the voltage rail correct). + * Configure gpio6_C6 as GPIO so dw_mmc builtin CD doesn't + * think there's a card inserted + */ + sdmmc_cd_disabled: sdmmc-cd-disabled { + rockchip,pins = <6 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>; + }; + + /* This is where we actually hook up CD */ + sdmmc_cd_pin: sdmmc-cd-pin { + rockchip,pins = <7 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>; + }; + }; +}; + +&rk808 { + vcc9-supply = <&vcc_5v>; + + regulators { + vccio_sd: LDO_REG4 { + regulator-name = "vccio_sd"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + + vcc33_sd: LDO_REG5 { + regulator-name = "vcc33_sd"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-state-mem { + regulator-off-in-suspend; + }; + }; + }; +}; + +&sdmmc { + status = "okay"; + + bus-width = <4>; + cap-mmc-highspeed; + cap-sd-highspeed; + card-detect-delay = <200>; + cd-gpios = <&gpio7 RK_PA5 GPIO_ACTIVE_LOW>; + rockchip,default-sample-phase = <90>; + sd-uhs-sdr12; + sd-uhs-sdr25; + sd-uhs-sdr50; + sd-uhs-sdr104; + vmmc-supply = <&vcc33_sd>; + vqmmc-supply = <&vccio_sd>; +}; |