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// SPDX-License-Identifier: GPL-2.0-or-later
// SPDX-FileCopyrightText: 2016 Sascha Hauer <s.hauer@pengutronix.de>
#include <common.h>
#include <init.h>
#include <io.h>
#include <linux/err.h>
#define SRC_SCR 0x0
#define SCR_WARM_RESET_ENABLE BIT(0)
static int imx_src_reset_probe(struct device *dev)
{
struct resource *res;
u32 val;
void __iomem *membase;
res = dev_request_mem_resource(dev, 0);
if (IS_ERR(res))
return PTR_ERR(res);
membase = IOMEM(res->start);
/*
* Generate cold reset for warm reset sources. Needed for
* some boards to come up properly after reset.
*/
val = readl(membase + SRC_SCR);
val &= ~SCR_WARM_RESET_ENABLE;
writel(val, membase + SRC_SCR);
return 0;
}
static const struct of_device_id imx_src_dt_ids[] = {
{ .compatible = "fsl,imx51-src", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, imx_src_dt_ids);
static struct driver imx_src_reset_driver = {
.name = "imx-src",
.probe = imx_src_reset_probe,
.of_compatible = DRV_OF_COMPAT(imx_src_dt_ids),
};
postcore_platform_driver(imx_src_reset_driver);
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