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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>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
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* Author(s): Patrice Chotard, <patrice.chotard@foss.st.com> for STMicroelectronics.
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*/
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#include <common.h>
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#include <dm.h>
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#include <regmap.h>
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#include <syscon.h>
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#include <sysreset.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <linux/bitops.h>
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#include <linux/printk.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct sti_sysreset_priv {
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phys_addr_t base;
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};
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static int sti_sysreset_request(struct udevice *dev, enum sysreset_t type)
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{
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struct sti_sysreset_priv *priv = dev_get_priv(dev);
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generic_clear_bit(0, (void __iomem *)priv->base);
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return -EINPROGRESS;
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}
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static int sti_sysreset_probe(struct udevice *dev)
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{
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struct sti_sysreset_priv *priv = dev_get_priv(dev);
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struct udevice *syscon;
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struct regmap *regmap;
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struct fdtdec_phandle_args syscfg_phandle;
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int ret;
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/* get corresponding syscon phandle */
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ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
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"st,syscfg", NULL, 0, 0,
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&syscfg_phandle);
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if (ret < 0) {
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pr_err("Can't get syscfg phandle: %d\n", ret);
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return ret;
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}
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ret = uclass_get_device_by_of_offset(UCLASS_SYSCON,
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syscfg_phandle.node,
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&syscon);
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if (ret) {
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pr_err("%s: uclass_get_device_by_of_offset failed: %d\n",
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__func__, ret);
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return ret;
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}
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regmap = syscon_get_regmap(syscon);
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if (!regmap) {
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pr_err("unable to get regmap for %s\n", syscon->name);
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return -ENODEV;
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}
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priv->base = regmap->ranges[0].start;
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return 0;
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}
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static struct sysreset_ops sti_sysreset = {
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.request = sti_sysreset_request,
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};
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static const struct udevice_id sti_sysreset_ids[] = {
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{ .compatible = "st,stih407-restart" },
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{ }
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};
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U_BOOT_DRIVER(sysreset_sti) = {
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.name = "sysreset_sti",
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.id = UCLASS_SYSRESET,
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.ops = &sti_sysreset,
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.probe = sti_sysreset_probe,
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.of_match = sti_sysreset_ids,
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.priv_auto = sizeof(struct sti_sysreset_priv),
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};
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