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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 Xilinx, Inc. - Michal Simek
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*/
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#define LOG_CATEGORY UCLASS_RESET
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#include <common.h>
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#include <dm.h>
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#include <dm/device_compat.h>
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#include <reset-uclass.h>
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#include <zynqmp_firmware.h>
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#define ZYNQMP_NR_RESETS (ZYNQMP_PM_RESET_END - ZYNQMP_PM_RESET_START)
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#define ZYNQMP_RESET_ID ZYNQMP_PM_RESET_START
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struct zynqmp_reset_priv {
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u32 reset_id;
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u32 nr_reset;
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};
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static int zynqmp_pm_reset_assert(const u32 reset,
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const enum zynqmp_pm_reset_action assert_flag)
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{
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return xilinx_pm_request(PM_RESET_ASSERT, reset, assert_flag, 0, 0,
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NULL);
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}
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static int zynqmp_reset_assert(struct reset_ctl *rst)
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{
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struct zynqmp_reset_priv *priv = dev_get_priv(rst->dev);
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dev_dbg(rst->dev, "%s(rst=%p) (id=%lu)\n", __func__, rst, rst->id);
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return zynqmp_pm_reset_assert(priv->reset_id + rst->id,
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PM_RESET_ACTION_ASSERT);
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}
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static int zynqmp_reset_deassert(struct reset_ctl *rst)
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{
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struct zynqmp_reset_priv *priv = dev_get_priv(rst->dev);
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dev_dbg(rst->dev, "%s(rst=%p) (id=%lu)\n", __func__, rst, rst->id);
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return zynqmp_pm_reset_assert(priv->reset_id + rst->id,
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PM_RESET_ACTION_RELEASE);
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}
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static int zynqmp_reset_request(struct reset_ctl *rst)
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{
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struct zynqmp_reset_priv *priv = dev_get_priv(rst->dev);
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dev_dbg(rst->dev, "%s(rst=%p) (id=%lu) (nr_reset=%d)\n", __func__,
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rst, rst->id, priv->nr_reset);
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if (priv->nr_reset && rst->id > priv->nr_reset)
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return -EINVAL;
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return 0;
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}
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static int zynqmp_reset_probe(struct udevice *dev)
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{
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struct zynqmp_reset_priv *priv = dev_get_priv(dev);
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if (device_is_compatible(dev, "xlnx,zynqmp-reset")) {
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priv->reset_id = ZYNQMP_RESET_ID;
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priv->nr_reset = ZYNQMP_NR_RESETS;
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}
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return 0;
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}
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const struct reset_ops zynqmp_reset_ops = {
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.request = zynqmp_reset_request,
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.rst_assert = zynqmp_reset_assert,
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.rst_deassert = zynqmp_reset_deassert,
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};
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static const struct udevice_id zynqmp_reset_ids[] = {
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{ .compatible = "xlnx,zynqmp-reset" },
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{ .compatible = "xlnx,versal-reset" },
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{ .compatible = "xlnx,versal-net-reset" },
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{ }
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};
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U_BOOT_DRIVER(zynqmp_reset) = {
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.name = "zynqmp_reset",
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.id = UCLASS_RESET,
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.of_match = zynqmp_reset_ids,
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.ops = &zynqmp_reset_ops,
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.probe = zynqmp_reset_probe,
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.priv_auto = sizeof(struct zynqmp_reset_priv),
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};
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