5113f6f70
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kernel add
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/*
* 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>;
};
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