1/*
2 * Google Veyron (and derivatives) fragment for sdmmc cards
3 *
4 * Copyright 2015 Google, Inc
5 *
6 * This file is dual-licensed: you can use it either under the terms
7 * of the GPL or the X11 license, at your option. Note that this dual
8 * licensing only applies to this file, and not this project as a
9 * whole.
10 *
11 *  a) This file is free software; you can redistribute it and/or
12 *     modify it under the terms of the GNU General Public License as
13 *     published by the Free Software Foundation; either version 2 of the
14 *     License, or (at your option) any later version.
15 *
16 *     This file is distributed in the hope that it will be useful,
17 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
18 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 *     GNU General Public License for more details.
20 *
21 *  Or, alternatively,
22 *
23 *  b) Permission is hereby granted, free of charge, to any person
24 *     obtaining a copy of this software and associated documentation
25 *     files (the "Software"), to deal in the Software without
26 *     restriction, including without limitation the rights to use,
27 *     copy, modify, merge, publish, distribute, sublicense, and/or
28 *     sell copies of the Software, and to permit persons to whom the
29 *     Software is furnished to do so, subject to the following
30 *     conditions:
31 *
32 *     The above copyright notice and this permission notice shall be
33 *     included in all copies or substantial portions of the Software.
34 *
35 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
36 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
37 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
38 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
39 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
40 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
41 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
42 *     OTHER DEALINGS IN THE SOFTWARE.
43 */
44
45&io_domains {
46	sdcard-supply = <&vccio_sd>;
47};
48
49&pinctrl {
50	sdmmc {
51		/*
52		 * We run sdmmc at max speed; bump up drive strength.
53		 * We also have external pulls, so disable the internal ones.
54		 */
55		sdmmc_bus4: sdmmc-bus4 {
56			rockchip,pins = <6 16 RK_FUNC_1 &pcfg_pull_none_drv_8ma>,
57					<6 17 RK_FUNC_1 &pcfg_pull_none_drv_8ma>,
58					<6 18 RK_FUNC_1 &pcfg_pull_none_drv_8ma>,
59					<6 19 RK_FUNC_1 &pcfg_pull_none_drv_8ma>;
60		};
61
62		sdmmc_clk: sdmmc-clk {
63			rockchip,pins = <6 20 RK_FUNC_1 &pcfg_pull_none_drv_8ma>;
64		};
65
66		sdmmc_cmd: sdmmc-cmd {
67			rockchip,pins = <6 21 RK_FUNC_1 &pcfg_pull_none_drv_8ma>;
68		};
69
70		/*
71		 * Builtin CD line is hooked to ground to prevent JTAG at boot
72		 * (and also to get the voltage rail correct).
73		 * Configure gpio6_C6 as GPIO so dw_mmc builtin CD doesn't
74		 * think there's a card inserted
75		 */
76		sdmmc_cd_disabled: sdmmc-cd-disabled {
77			rockchip,pins = <6 22 RK_FUNC_GPIO &pcfg_pull_none>;
78		};
79
80		/* This is where we actually hook up CD */
81		sdmmc_cd_gpio: sdmmc-cd-gpio {
82			rockchip,pins = <7 5 RK_FUNC_GPIO &pcfg_pull_none>;
83		};
84	};
85};
86
87&rk808 {
88	vcc9-supply = <&vcc_5v>;
89
90	regulators {
91		vccio_sd: LDO_REG4 {
92			regulator-name = "vccio_sd";
93			regulator-min-microvolt = <1800000>;
94			regulator-max-microvolt = <3300000>;
95			regulator-state-mem {
96				regulator-off-in-suspend;
97			};
98		};
99
100		vcc33_sd: LDO_REG5 {
101			regulator-name = "vcc33_sd";
102			regulator-min-microvolt = <3300000>;
103			regulator-max-microvolt = <3300000>;
104			regulator-state-mem {
105				regulator-off-in-suspend;
106			};
107		};
108	};
109};
110
111&sdmmc {
112	status = "okay";
113
114	bus-width = <4>;
115	cap-mmc-highspeed;
116	cap-sd-highspeed;
117	card-detect-delay = <200>;
118	cd-gpios = <&gpio7 5 GPIO_ACTIVE_LOW>;
119	rockchip,default-sample-phase = <90>;
120	num-slots = <1>;
121	sd-uhs-sdr12;
122	sd-uhs-sdr25;
123	sd-uhs-sdr50;
124	sd-uhs-sdr104;
125	vmmc-supply = <&vcc33_sd>;
126	vqmmc-supply = <&vccio_sd>;
127};
128