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 DECLARE_GLOBAL_DATA_PTR; 16 17 int board_init(void) 18 { 19 struct udevice *pinctrl, *regulator; 20 int ret; 21 22 /* 23 * The PWM do not have decicated interrupt number in dts and can 24 * not get periph_id by pinctrl framework, so let's init them here. 25 * The PWM2 and PWM3 are for pwm regulater. 26 */ 27 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 28 if (ret) { 29 debug("%s: Cannot find pinctrl device\n", __func__); 30 goto out; 31 } 32 33 /* Enable pwm0 for panel backlight */ 34 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0); 35 if (ret) { 36 debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret); 37 goto out; 38 } 39 40 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2); 41 if (ret) { 42 debug("%s PWM2 pinctrl init fail!\n", __func__); 43 goto out; 44 } 45 46 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3); 47 if (ret) { 48 debug("%s PWM3 pinctrl init fail!\n", __func__); 49 goto out; 50 } 51 52 ret = regulators_enable_boot_on(false); 53 if (ret) 54 debug("%s: Cannot enable boot on regulator\n", __func__); 55 56 ret = regulator_get_by_platname("vcc5v0_host", ®ulator); 57 if (ret) { 58 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret); 59 goto out; 60 } 61 62 ret = regulator_set_enable(regulator, true); 63 if (ret) { 64 debug("%s vcc5v0-host-en set fail!\n", __func__); 65 goto out; 66 } 67 68 out: 69 return 0; 70 } 71 72 void spl_board_init(void) 73 { 74 struct udevice *pinctrl; 75 int ret; 76 77 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 78 if (ret) { 79 debug("%s: Cannot find pinctrl device\n", __func__); 80 goto err; 81 } 82 83 /* Enable debug UART */ 84 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); 85 if (ret) { 86 debug("%s: Failed to set up console UART\n", __func__); 87 goto err; 88 } 89 90 preloader_console_init(); 91 return; 92 err: 93 printf("%s: Error %d\n", __func__, ret); 94 95 /* No way to report error here */ 96 hang(); 97 } 98