projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| fe60f06d SW |
1 | /* |
| 2 | * Copyright (c) 2016, NVIDIA CORPORATION. | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: GPL-2.0 | |
| 5 | */ | |
| 6 | ||
| 7 | #include <common.h> | |
| 8 | #include <dm.h> | |
| 9 | #include <reset-uclass.h> | |
| 10 | #include <asm/arch/clock.h> | |
| 11 | #include <asm/arch-tegra/clk_rst.h> | |
| 12 | ||
| 13 | static int tegra_car_reset_request(struct reset_ctl *reset_ctl) | |
| 14 | { | |
| 15 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 16 | reset_ctl->dev, reset_ctl->id); | |
| 17 | ||
| 18 | /* PERIPH_ID_COUNT varies per SoC */ | |
| 19 | if (reset_ctl->id >= PERIPH_ID_COUNT) | |
| 20 | return -EINVAL; | |
| 21 | ||
| 22 | return 0; | |
| 23 | } | |
| 24 | ||
| 25 | static int tegra_car_reset_free(struct reset_ctl *reset_ctl) | |
| 26 | { | |
| 27 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 28 | reset_ctl->dev, reset_ctl->id); | |
| 29 | ||
| 30 | return 0; | |
| 31 | } | |
| 32 | ||
| 33 | static int tegra_car_reset_assert(struct reset_ctl *reset_ctl) | |
| 34 | { | |
| 35 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 36 | reset_ctl->dev, reset_ctl->id); | |
| 37 | ||
| 38 | reset_set_enable(reset_ctl->id, 1); | |
| 39 | ||
| 40 | return 0; | |
| 41 | } | |
| 42 | ||
| 43 | static int tegra_car_reset_deassert(struct reset_ctl *reset_ctl) | |
| 44 | { | |
| 45 | debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl, | |
| 46 | reset_ctl->dev, reset_ctl->id); | |
| 47 | ||
| 48 | reset_set_enable(reset_ctl->id, 0); | |
| 49 | ||
| 50 | return 0; | |
| 51 | } | |
| 52 | ||
| 53 | struct reset_ops tegra_car_reset_ops = { | |
| 54 | .request = tegra_car_reset_request, | |
| 55 | .free = tegra_car_reset_free, | |
| 56 | .rst_assert = tegra_car_reset_assert, | |
| 57 | .rst_deassert = tegra_car_reset_deassert, | |
| 58 | }; | |
| 59 | ||
| 60 | static int tegra_car_reset_probe(struct udevice *dev) | |
| 61 | { | |
| 62 | debug("%s(dev=%p)\n", __func__, dev); | |
| 63 | ||
| 64 | return 0; | |
| 65 | } | |
| 66 | ||
| 67 | U_BOOT_DRIVER(tegra_car_reset) = { | |
| 68 | .name = "tegra_car_reset", | |
| 69 | .id = UCLASS_RESET, | |
| 70 | .probe = tegra_car_reset_probe, | |
| 71 | .ops = &tegra_car_reset_ops, | |
| 72 | }; |