1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /*
3 * Copyright (C) 2023 DH electronics GmbH
4 */
5
6 /*
7 * Special SoM configuration: SD card
8 *
9 * Enabled: Micro SD card on module or
10 * external SD card via DHCOM depends on hardware variant
11 * GPIO H and GPIO I will be available
12 * DHCOM UART2 will be available
13 * Disabled: WiFi and BT
14 */
15
16 /*
17 * To use usdhc1 as SD card, the WiFi node must be deleted. The associated
18 * pwrseq node is also deleted in order to ensure that GPIO H is released.
19 * BT is also not available, so remove BT from the UART node.
20 */
21 /delete-node/ &brcmf;
22 /delete-node/ &usdhc1_pwrseq;
23 /delete-node/ &bluetooth;
24
25 / {
26 aliases {
27 mmc1 = &usdhc1;
28 serial0 = &uart1;
29 serial1 = &uart2;
30 serial2 = &uart3;
31 serial3 = &uart4;
32 serial4 = &uart5;
33 serial5 = &uart6;
34 };
35
36 reg_sd1_vmmc: regulator-sd1-vmmc {
37 compatible = "regulator-fixed";
38 regulator-max-microvolt = <3300000>;
39 regulator-min-microvolt = <3300000>;
40 regulator-name = "VSD_3V3";
41 };
42 };
43
44 /* Micro SD card on module or external SD card via DHCOM */
45 &usdhc1 {
46 /delete-property/ #address-cells;
47 /delete-property/ #size-cells;
48 /delete-property/ keep-power-in-suspend;
49 /delete-property/ mmc-pwrseq;
50 /delete-property/ non-removable;
51 /delete-property/ wakeup-source;
52 cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
53 no-1-8-v;
54 pinctrl-0 = <&pinctrl_usdhc1>;
55 pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
56 pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
57 pinctrl-names = "default", "state_100mhz", "state_200mhz";
58 vmmc-supply = <®_sd1_vmmc>;
59 status = "okay";
60 };
61
62 &iomuxc {
63 pinctrl_usdhc1: usdhc1-grp {
64 fsl,pins = <
65 MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x17059
66 MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x10059
67 MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
68 MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
69 MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
70 MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
71 MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x120b0 /* SD1 CD */
72 >;
73 };
74
75 pinctrl_usdhc1_100mhz: usdhc1-100mhz-grp {
76 fsl,pins = <
77 MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x170b9
78 MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x100b9
79 MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170b9
80 MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170b9
81 MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170b9
82 MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170b9
83 MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x120b0 /* SD1 CD */
84
85 >;
86 };
87
88 pinctrl_usdhc1_200mhz: usdhc1-200mhz-grp {
89 fsl,pins = <
90 MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x170f9
91 MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x100f9
92 MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170f9
93 MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170f9
94 MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170f9
95 MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170f9
96 MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x120b0 /* SD1 CD */
97 >;
98 };
99 };
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