1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 /*
3 * Google Veyron (and derivatives) fragment for sdmmc cards
4 *
5 * Copyright 2015 Google, Inc
6 */
7
8 / {
9 aliases {
10 mmc1 = &sdmmc;
11 };
12 };
13
14 &io_domains {
15 sdcard-supply = <&vccio_sd>;
16 };
17
18 &pinctrl {
19 sdmmc {
20 /*
21 * We run sdmmc at max speed; bump up drive strength.
22 * We also have external pulls, so disable the internal ones.
23 */
24 sdmmc_bus4: sdmmc-bus4 {
25 rockchip,pins = <6 RK_PC0 1 &pcfg_pull_none_drv_8ma>,
26 <6 RK_PC1 1 &pcfg_pull_none_drv_8ma>,
27 <6 RK_PC2 1 &pcfg_pull_none_drv_8ma>,
28 <6 RK_PC3 1 &pcfg_pull_none_drv_8ma>;
29 };
30
31 sdmmc_clk: sdmmc-clk {
32 rockchip,pins = <6 RK_PC4 1 &pcfg_pull_none_drv_8ma>;
33 };
34
35 sdmmc_cmd: sdmmc-cmd {
36 rockchip,pins = <6 RK_PC5 1 &pcfg_pull_none_drv_8ma>;
37 };
38
39 /*
40 * Builtin CD line is hooked to ground to prevent JTAG at boot
41 * (and also to get the voltage rail correct).
42 * Configure gpio6_C6 as GPIO so dw_mmc builtin CD doesn't
43 * think there's a card inserted
44 */
45 sdmmc_cd_disabled: sdmmc-cd-disabled {
46 rockchip,pins = <6 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
47 };
48
49 /* This is where we actually hook up CD */
50 sdmmc_cd_pin: sdmmc-cd-pin {
51 rockchip,pins = <7 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>;
52 };
53 };
54 };
55
56 &rk808 {
57 vcc9-supply = <&vcc_5v>;
58
59 regulators {
60 vccio_sd: LDO_REG4 {
61 regulator-name = "vccio_sd";
62 regulator-min-microvolt = <1800000>;
63 regulator-max-microvolt = <3300000>;
64 regulator-state-mem {
65 regulator-off-in-suspend;
66 };
67 };
68
69 vcc33_sd: LDO_REG5 {
70 regulator-name = "vcc33_sd";
71 regulator-min-microvolt = <3300000>;
72 regulator-max-microvolt = <3300000>;
73 regulator-state-mem {
74 regulator-off-in-suspend;
75 };
76 };
77 };
78 };
79
80 &sdmmc {
81 status = "okay";
82
83 bus-width = <4>;
84 cap-mmc-highspeed;
85 cap-sd-highspeed;
86 card-detect-delay = <200>;
87 cd-gpios = <&gpio7 RK_PA5 GPIO_ACTIVE_LOW>;
88 rockchip,default-sample-phase = <90>;
89 sd-uhs-sdr12;
90 sd-uhs-sdr25;
91 sd-uhs-sdr50;
92 sd-uhs-sdr104;
93 vmmc-supply = <&vcc33_sd>;
94 vqmmc-supply = <&vccio_sd>;
95 };
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