mirror of
https://github.com/AsahiLinux/u-boot
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73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2016, NVIDIA CORPORATION.
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*/
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <reset-uclass.h>
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#include <asm/arch/clock.h>
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#include <asm/arch-tegra/clk_rst.h>
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static int tegra_car_reset_request(struct reset_ctl *reset_ctl)
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{
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debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
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reset_ctl->dev, reset_ctl->id);
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/* PERIPH_ID_COUNT varies per SoC */
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if (reset_ctl->id >= PERIPH_ID_COUNT)
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return -EINVAL;
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return 0;
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}
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static int tegra_car_reset_free(struct reset_ctl *reset_ctl)
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{
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debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
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reset_ctl->dev, reset_ctl->id);
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return 0;
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}
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static int tegra_car_reset_assert(struct reset_ctl *reset_ctl)
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{
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debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
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reset_ctl->dev, reset_ctl->id);
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reset_set_enable(reset_ctl->id, 1);
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return 0;
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}
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static int tegra_car_reset_deassert(struct reset_ctl *reset_ctl)
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{
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debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
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reset_ctl->dev, reset_ctl->id);
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reset_set_enable(reset_ctl->id, 0);
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return 0;
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}
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struct reset_ops tegra_car_reset_ops = {
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.request = tegra_car_reset_request,
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.rfree = tegra_car_reset_free,
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.rst_assert = tegra_car_reset_assert,
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.rst_deassert = tegra_car_reset_deassert,
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};
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static int tegra_car_reset_probe(struct udevice *dev)
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{
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debug("%s(dev=%p)\n", __func__, dev);
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return 0;
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}
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U_BOOT_DRIVER(tegra_car_reset) = {
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.name = "tegra_car_reset",
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.id = UCLASS_RESET,
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.probe = tegra_car_reset_probe,
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.ops = &tegra_car_reset_ops,
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};
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