1 /* 2 * (C) Copyright 2016 Rockchip Electronics Co., Ltd 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <dm/pinctrl.h> 10 #include <dm/uclass-internal.h> 11 #include <asm/arch/periph.h> 12 #include <power/regulator.h> 13 #include <spl.h> 14 15 int board_init(void) 16 { 17 struct udevice *pinctrl, *regulator; 18 int ret; 19 20 /* 21 * The PWM do not have decicated interrupt number in dts and can 22 * not get periph_id by pinctrl framework, so let's init them here. 23 * The PWM2 and PWM3 are for pwm regulater. 24 */ 25 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 26 if (ret) { 27 debug("%s: Cannot find pinctrl device\n", __func__); 28 goto out; 29 } 30 31 /* Enable pwm0 for panel backlight */ 32 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0); 33 if (ret) { 34 debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret); 35 goto out; 36 } 37 38 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2); 39 if (ret) { 40 debug("%s PWM2 pinctrl init fail!\n", __func__); 41 goto out; 42 } 43 44 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3); 45 if (ret) { 46 debug("%s PWM3 pinctrl init fail!\n", __func__); 47 goto out; 48 } 49 50 ret = regulators_enable_boot_on(false); 51 if (ret) 52 debug("%s: Cannot enable boot on regulator\n", __func__); 53 54 ret = regulator_get_by_platname("vcc5v0_host", ®ulator); 55 if (ret) { 56 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret); 57 goto out; 58 } 59 60 ret = regulator_set_enable(regulator, true); 61 if (ret) { 62 debug("%s vcc5v0-host-en set fail!\n", __func__); 63 goto out; 64 } 65 66 out: 67 return 0; 68 } 69 70 void spl_board_init(void) 71 { 72 struct udevice *pinctrl; 73 int ret; 74 75 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 76 if (ret) { 77 debug("%s: Cannot find pinctrl device\n", __func__); 78 goto err; 79 } 80 81 /* Enable debug UART */ 82 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 83 if (ret) { 84 debug("%s: Failed to set up console UART\n", __func__); 85 goto err; 86 } 87 88 preloader_console_init(); 89 return; 90 err: 91 printf("%s: Error %d\n", __func__, ret); 92 93 /* No way to report error here */ 94 hang(); 95 } 96