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https://github.com/AsahiLinux/u-boot
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106822de5e
For USB3 host controller to detect devices on the bus it is required to enable a PMIC GPIO: usb_vbus_boost_pin. So enable that during board specific initialization. And since this PMIC GPIO parsing is quite u-boot specific, so add a DT override to qcs404-evb-uboot.dtsi to represent usb_vbus_boost_pin. Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Board init file for QCS404-EVB
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*
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* (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <env.h>
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#include <init.h>
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#include <asm/cache.h>
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#include <asm/gpio.h>
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#include <asm/global_data.h>
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#include <fdt_support.h>
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#include <asm/arch/dram.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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return fdtdec_setup_mem_size_base();
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}
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int board_init(void)
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{
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struct udevice *pmic_gpio;
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struct gpio_desc usb_vbus_boost_pin;
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int ret, node;
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ret = uclass_get_device_by_name(UCLASS_GPIO,
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"pms405_gpios@c000",
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&pmic_gpio);
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if (ret < 0) {
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printf("Failed to find pms405_gpios@c000 node.\n");
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return ret;
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}
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node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pmic_gpio),
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"usb_vbus_boost_pin");
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if (node < 0) {
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printf("Failed to find usb_hub_reset_pm dt node.\n");
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return node;
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}
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ret = gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
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&usb_vbus_boost_pin, 0);
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if (ret < 0) {
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printf("Failed to request usb_hub_reset_pm gpio.\n");
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return ret;
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}
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dm_gpio_set_dir_flags(&usb_vbus_boost_pin,
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GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
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return 0;
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}
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void reset_cpu(void)
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{
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psci_system_reset();
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}
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