Tom Rini
8 years ago
commit
51b4a639e4
@ -0,0 +1,19 @@ |
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#ifndef __REBOOT_MODE_H |
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#define __REBOOT_MODE_H |
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|
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/* high 24 bits is tag, low 8 bits is type */ |
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#define REBOOT_FLAG 0x5242C300 |
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/* normal boot */ |
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#define BOOT_NORMAL (REBOOT_FLAG + 0) |
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/* enter loader rockusb mode */ |
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#define BOOT_LOADER (REBOOT_FLAG + 1) |
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/* enter recovery */ |
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#define BOOT_RECOVERY (REBOOT_FLAG + 3) |
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/* enter fastboot mode */ |
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#define BOOT_FASTBOOT (REBOOT_FLAG + 9) |
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/* enter charging mode */ |
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#define BOOT_CHARGING (REBOOT_FLAG + 11) |
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/* enter usb mass storage mode */ |
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#define BOOT_UMS (REBOOT_FLAG + 12) |
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#endif |
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@ -0,0 +1,122 @@ |
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/*
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* (C) Copyright 2015 Rockchip Electronics Co., Ltd |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <clk.h> |
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#include <dm.h> |
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#include <ram.h> |
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#include <asm/io.h> |
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#include <asm/arch/clock.h> |
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#include <asm/arch/periph.h> |
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#include <asm/arch/grf_rk3036.h> |
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#include <asm/arch/boot_mode.h> |
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#include <asm/arch/sdram_rk3036.h> |
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#include <asm/gpio.h> |
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#include <dm/pinctrl.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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#define GRF_BASE 0x20008000 |
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static void setup_boot_mode(void) |
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{ |
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struct rk3036_grf *const grf = (void *)GRF_BASE; |
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int boot_mode = readl(&grf->os_reg[4]); |
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debug("boot mode %x.\n", boot_mode); |
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/* Clear boot mode */ |
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writel(BOOT_NORMAL, &grf->os_reg[4]); |
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switch (boot_mode) { |
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case BOOT_FASTBOOT: |
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printf("enter fastboot!\n"); |
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setenv("preboot", "setenv preboot; fastboot usb0"); |
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break; |
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case BOOT_UMS: |
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printf("enter UMS!\n"); |
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setenv("preboot", "setenv preboot; ums mmc 0"); |
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break; |
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} |
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} |
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|
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__weak int rk_board_late_init(void) |
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{ |
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return 0; |
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} |
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int board_late_init(void) |
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{ |
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setup_boot_mode(); |
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return rk_board_late_init(); |
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} |
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int board_init(void) |
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{ |
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return 0; |
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} |
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int dram_init(void) |
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{ |
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gd->ram_size = sdram_size(); |
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return 0; |
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} |
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#ifndef CONFIG_SYS_DCACHE_OFF |
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void enable_caches(void) |
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{ |
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/* Enable D-cache. I-cache is already enabled in start.S */ |
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dcache_enable(); |
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} |
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#endif |
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#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG) |
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#include <usb.h> |
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#include <usb/dwc2_udc.h> |
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static struct dwc2_plat_otg_data rk3036_otg_data = { |
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.rx_fifo_sz = 512, |
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.np_tx_fifo_sz = 16, |
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.tx_fifo_sz = 128, |
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}; |
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int board_usb_init(int index, enum usb_init_type init) |
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{ |
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int node; |
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const char *mode; |
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bool matched = false; |
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const void *blob = gd->fdt_blob; |
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/* find the usb_otg node */ |
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node = fdt_node_offset_by_compatible(blob, -1, |
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"rockchip,rk3288-usb"); |
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while (node > 0) { |
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mode = fdt_getprop(blob, node, "dr_mode", NULL); |
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if (mode && strcmp(mode, "otg") == 0) { |
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matched = true; |
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break; |
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} |
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node = fdt_node_offset_by_compatible(blob, node, |
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"rockchip,rk3288-usb"); |
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} |
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if (!matched) { |
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debug("Not found usb_otg device\n"); |
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return -ENODEV; |
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} |
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rk3036_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg"); |
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return dwc2_udc_probe(&rk3036_otg_data); |
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} |
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int board_usb_cleanup(int index, enum usb_init_type init) |
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{ |
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return 0; |
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} |
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#endif |
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@ -0,0 +1,159 @@ |
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/*
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* Copyright (C) 2016 Rockchip Electronics Co., Ltd |
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* |
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* Based on kernel drivers/regulator/pwm-regulator.c |
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* Copyright (C) 2014 - STMicroelectronics Inc. |
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* Author: Lee Jones <lee.jones@linaro.org> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <errno.h> |
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#include <pwm.h> |
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#include <power/regulator.h> |
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#include <libfdt.h> |
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#include <fdt_support.h> |
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#include <fdtdec.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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struct pwm_regulator_info { |
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/* pwm id corresponding to the PWM driver */ |
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int pwm_id; |
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/* the period of one PWM cycle */ |
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int period_ns; |
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struct udevice *pwm; |
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/* initialize voltage of regulator */ |
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unsigned int init_voltage; |
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/* the maximum voltage of regulator */ |
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unsigned int max_voltage; |
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/* the minimum voltage of regulator */ |
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unsigned int min_voltage; |
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/* the current voltage of regulator */ |
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unsigned int volt_uV; |
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}; |
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static int pwm_regulator_enable(struct udevice *dev, bool enable) |
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{ |
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struct pwm_regulator_info *priv = dev_get_priv(dev); |
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return pwm_set_enable(priv->pwm, priv->pwm_id, enable); |
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} |
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static int pwm_voltage_to_duty_cycle_percentage(struct udevice *dev, int req_uV) |
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{ |
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struct pwm_regulator_info *priv = dev_get_priv(dev); |
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int min_uV = priv->min_voltage; |
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int max_uV = priv->max_voltage; |
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int diff = max_uV - min_uV; |
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return 100 - (((req_uV * 100) - (min_uV * 100)) / diff); |
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} |
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static int pwm_regulator_get_voltage(struct udevice *dev) |
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{ |
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struct pwm_regulator_info *priv = dev_get_priv(dev); |
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return priv->volt_uV; |
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} |
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static int pwm_regulator_set_voltage(struct udevice *dev, int uvolt) |
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{ |
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struct pwm_regulator_info *priv = dev_get_priv(dev); |
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int duty_cycle; |
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int ret = 0; |
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duty_cycle = pwm_voltage_to_duty_cycle_percentage(dev, uvolt); |
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ret = pwm_set_config(priv->pwm, priv->pwm_id, |
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(priv->period_ns / 100) * duty_cycle, priv->period_ns); |
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if (ret) { |
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dev_err(dev, "Failed to configure PWM\n"); |
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return ret; |
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} |
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ret = pwm_set_enable(priv->pwm, priv->pwm_id, true); |
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if (ret) { |
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dev_err(dev, "Failed to enable PWM\n"); |
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return ret; |
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} |
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priv->volt_uV = uvolt; |
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return ret; |
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} |
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static int pwm_regulator_ofdata_to_platdata(struct udevice *dev) |
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{ |
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struct pwm_regulator_info *priv = dev_get_priv(dev); |
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struct fdtdec_phandle_args args; |
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const void *blob = gd->fdt_blob; |
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int node = dev->of_offset; |
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int ret; |
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ret = fdtdec_parse_phandle_with_args(blob, node, "pwms", "#pwm-cells", |
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0, 0, &args); |
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if (ret) { |
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debug("%s: Cannot get PWM phandle: ret=%d\n", __func__, ret); |
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return ret; |
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} |
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/* TODO: pwm_id here from device tree if needed */ |
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priv->period_ns = args.args[1]; |
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priv->init_voltage = fdtdec_get_int(blob, node, |
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"regulator-init-microvolt", -1); |
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if (priv->init_voltage < 0) { |
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printf("Cannot find regulator pwm init_voltage\n"); |
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return -EINVAL; |
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} |
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ret = uclass_get_device_by_of_offset(UCLASS_PWM, args.node, &priv->pwm); |
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if (ret) { |
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debug("%s: Cannot get PWM: ret=%d\n", __func__, ret); |
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return ret; |
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} |
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return 0; |
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} |
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static int pwm_regulator_probe(struct udevice *dev) |
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{ |
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struct pwm_regulator_info *priv = dev_get_priv(dev); |
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struct dm_regulator_uclass_platdata *uc_pdata; |
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uc_pdata = dev_get_uclass_platdata(dev); |
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uc_pdata->type = REGULATOR_TYPE_BUCK; |
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uc_pdata->mode_count = 0; |
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priv->max_voltage = uc_pdata->max_uV; |
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priv->min_voltage = uc_pdata->min_uV; |
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if (priv->init_voltage) |
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pwm_regulator_set_voltage(dev, priv->init_voltage); |
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pwm_regulator_enable(dev, 1); |
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return 0; |
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} |
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static const struct dm_regulator_ops pwm_regulator_ops = { |
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.get_value = pwm_regulator_get_voltage, |
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.set_value = pwm_regulator_set_voltage, |
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.set_enable = pwm_regulator_enable, |
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}; |
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static const struct udevice_id pwm_regulator_ids[] = { |
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{ .compatible = "pwm-regulator" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(pwm_regulator) = { |
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.name = "pwm_regulator", |
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.id = UCLASS_REGULATOR, |
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.ops = &pwm_regulator_ops, |
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.probe = pwm_regulator_probe, |
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.of_match = pwm_regulator_ids, |
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.ofdata_to_platdata = pwm_regulator_ofdata_to_platdata, |
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.priv_auto_alloc_size = sizeof(struct pwm_regulator_info), |
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}; |
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