diff options
Diffstat (limited to 'kernel/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi')
| -rw-r--r-- | kernel/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/kernel/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi b/kernel/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi new file mode 100644 index 000000000..fec076eb7 --- /dev/null +++ b/kernel/arch/arm/boot/dts/rk3288-veyron-sdmmc.dtsi @@ -0,0 +1,127 @@ +/* + * Google Veyron (and derivatives) fragment for sdmmc cards + * + * Copyright 2015 Google, Inc + * + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +&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 16 RK_FUNC_1 &pcfg_pull_none_drv_8ma>, + <6 17 RK_FUNC_1 &pcfg_pull_none_drv_8ma>, + <6 18 RK_FUNC_1 &pcfg_pull_none_drv_8ma>, + <6 19 RK_FUNC_1 &pcfg_pull_none_drv_8ma>; + }; + + sdmmc_clk: sdmmc-clk { + rockchip,pins = <6 20 RK_FUNC_1 &pcfg_pull_none_drv_8ma>; + }; + + sdmmc_cmd: sdmmc-cmd { + rockchip,pins = <6 21 RK_FUNC_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 22 RK_FUNC_GPIO &pcfg_pull_none>; + }; + + /* This is where we actually hook up CD */ + sdmmc_cd_gpio: sdmmc-cd-gpio { + rockchip,pins = <7 5 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 5 GPIO_ACTIVE_LOW>; + rockchip,default-sample-phase = <90>; + num-slots = <1>; + sd-uhs-sdr12; + sd-uhs-sdr25; + sd-uhs-sdr50; + sd-uhs-sdr104; + vmmc-supply = <&vcc33_sd>; + vqmmc-supply = <&vccio_sd>; +}; |