1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2016 Rockchip Electronics Co., Ltd
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <dm/pinctrl.h>
9 #include <dm/uclass-internal.h>
10 #include <asm/arch/periph.h>
11 #include <power/regulator.h>
12 #include <spl.h>
13 
14 int board_init(void)
15 {
16 	struct udevice *pinctrl, *regulator;
17 	int ret;
18 
19 	/*
20 	 * The PWM do not have decicated interrupt number in dts and can
21 	 * not get periph_id by pinctrl framework, so let's init them here.
22 	 * The PWM2 and PWM3 are for pwm regulater.
23 	 */
24 	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
25 	if (ret) {
26 		debug("%s: Cannot find pinctrl device\n", __func__);
27 		goto out;
28 	}
29 
30 	/* Enable pwm0 for panel backlight */
31 	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0);
32 	if (ret) {
33 		debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret);
34 		goto out;
35 	}
36 
37 	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2);
38 	if (ret) {
39 		debug("%s PWM2 pinctrl init fail!\n", __func__);
40 		goto out;
41 	}
42 
43 	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3);
44 	if (ret) {
45 		debug("%s PWM3 pinctrl init fail!\n", __func__);
46 		goto out;
47 	}
48 
49 	ret = regulators_enable_boot_on(false);
50 	if (ret)
51 		debug("%s: Cannot enable boot on regulator\n", __func__);
52 
53 	ret = regulator_get_by_platname("vcc5v0_host", &regulator);
54 	if (ret) {
55 		debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret);
56 		goto out;
57 	}
58 
59 	ret = regulator_set_enable(regulator, true);
60 	if (ret) {
61 		debug("%s vcc5v0-host-en set fail!\n", __func__);
62 		goto out;
63 	}
64 
65 out:
66 	return 0;
67 }
68 
69 void spl_board_init(void)
70 {
71 	struct udevice *pinctrl;
72 	int ret;
73 
74 	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
75 	if (ret) {
76 		debug("%s: Cannot find pinctrl device\n", __func__);
77 		goto err;
78 	}
79 
80 	/* Enable debug UART */
81 	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
82 	if (ret) {
83 		debug("%s: Failed to set up console UART\n", __func__);
84 		goto err;
85 	}
86 
87 	preloader_console_init();
88 	return;
89 err:
90 	printf("%s: Error %d\n", __func__, ret);
91 
92 	/* No way to report error here */
93 	hang();
94 }
95