mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-29 08:01:08 +00:00
af6ba90048
Adds support for Core 0 watchdog poke on OcteonTX and OcteonTX2 platforms. Signed-off-by: Suneel Garapati <sgarapati@marvell.com> Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2019 Marvell International Ltd.
|
|
*
|
|
* https://spdx.org/licenses
|
|
*/
|
|
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <wdt.h>
|
|
#include <asm/io.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#define CORE0_POKE_OFFSET 0x50000
|
|
#define CORE0_POKE_OFFSET_MASK 0xfffffULL
|
|
|
|
struct octeontx_wdt {
|
|
void __iomem *reg;
|
|
};
|
|
|
|
static int octeontx_wdt_reset(struct udevice *dev)
|
|
{
|
|
struct octeontx_wdt *priv = dev_get_priv(dev);
|
|
|
|
writeq(~0ULL, priv->reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int octeontx_wdt_probe(struct udevice *dev)
|
|
{
|
|
struct octeontx_wdt *priv = dev_get_priv(dev);
|
|
|
|
priv->reg = dev_remap_addr(dev);
|
|
if (!priv->reg)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Save core poke register address in reg (its not 0xa0000 as
|
|
* extracted from the DT but 0x50000 instead)
|
|
*/
|
|
priv->reg = (void __iomem *)(((u64)priv->reg &
|
|
~CORE0_POKE_OFFSET_MASK) |
|
|
CORE0_POKE_OFFSET);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct wdt_ops octeontx_wdt_ops = {
|
|
.reset = octeontx_wdt_reset,
|
|
};
|
|
|
|
static const struct udevice_id octeontx_wdt_ids[] = {
|
|
{ .compatible = "arm,sbsa-gwdt" },
|
|
{}
|
|
};
|
|
|
|
U_BOOT_DRIVER(wdt_octeontx) = {
|
|
.name = "wdt_octeontx",
|
|
.id = UCLASS_WDT,
|
|
.of_match = octeontx_wdt_ids,
|
|
.ops = &octeontx_wdt_ops,
|
|
.priv_auto_alloc_size = sizeof(struct octeontx_wdt),
|
|
.probe = octeontx_wdt_probe,
|
|
};
|