Googler | 25e92cf | 2023-12-13 10:05:01 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: (GPL-2.0+ OR MIT) |
| 2 | /* |
| 3 | * Copyright (c) 2019 Amlogic, Inc. All rights reserved. |
| 4 | */ |
| 5 | |
| 6 | #include <common.h> |
| 7 | #include <asm/types.h> |
| 8 | #include <asm/arch/romboot.h> |
| 9 | #include <asm/arch/cpu_reset.h> |
| 10 | #include <asm/arch/io.h> |
| 11 | #include <asm/arch/timer.h> |
| 12 | #include <dm.h> |
| 13 | #include <wdt.h> |
| 14 | |
| 15 | /* |
| 16 | *GPIOE_0 VDDEE_PWM |
| 17 | *GPIOE_1 VDDCPU_PWM |
| 18 | * */ |
| 19 | void set_pwm_to_input(void) |
| 20 | { |
| 21 | //hxbao, need fine tune |
| 22 | #if 0 |
| 23 | unsigned int val; |
| 24 | |
| 25 | val = readl(AO_RTI_PINMUX_REG1); |
| 26 | val &= ~(0xff << 16); |
| 27 | writel(val, AO_RTI_PINMUX_REG1);/* clear pinmux */ |
| 28 | val = readl(AO_GPIO_O_EN_N); |
| 29 | val &= ~(0x3 << 16); |
| 30 | val |= 0x3 << 16; |
| 31 | writel(val, AO_GPIO_O_EN_N);/* set input mode */ |
| 32 | val = readl(AO_RTI_PULL_UP_EN_REG); |
| 33 | val &= ~(0x3 << 16); |
| 34 | writel(val, AO_RTI_PULL_UP_EN_REG);/* disable pull up/down */ |
| 35 | #endif |
| 36 | } |
| 37 | |
| 38 | void reset_system(void) |
| 39 | { |
| 40 | struct udevice *watchdog_devp; |
| 41 | int ret; |
| 42 | |
| 43 | set_pwm_to_input(); |
| 44 | |
| 45 | _udelay(10000); //wait print |
| 46 | |
| 47 | ret = uclass_get_device_by_name(UCLASS_WDT, "watchdog", &watchdog_devp); |
| 48 | if (ret < 0) { |
| 49 | printf("failed to reset system because can't get wdt device\n"); |
| 50 | return; |
| 51 | } |
| 52 | wdt_start(watchdog_devp, 0, 0); |
| 53 | while (1); |
| 54 | } |
| 55 | |
| 56 | /* uboot reset interface */ |
| 57 | void reset_cpu(unsigned long flag){ |
| 58 | reset_system(); |
| 59 | } |