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m68k: coldfire/5441x: register mcf-rcm-reset platform device

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Add SoC-level registration of the mcf-rcm-reset platform device so the
power_on_reason sysfs attribute is created on every MCF5441x board
without per-board boilerplate.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
This commit is contained in:
Jean-Michel Hautbois
2026-06-17 21:17:16 +02:00
committed by Greg Ungerer
parent b47eeaa48e
commit de0dab22cb
1 changed files with 25 additions and 0 deletions
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25
arch/m68k/coldfire/m5441x.c
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@@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
@@ -242,6 +243,30 @@ static void __init m5441x_fec_init(void)
mcf_write8(0x03, MCFGPIO_PAR_FEC);
}
/*
* Reset Controller Module status register. Exposed to userspace as
* /sys/devices/platform/mcf-rcm-reset/power_on_reason by the mcf-rcm-reset
* driver (drivers/power/reset/mcf-rcm-reset.c).
*/
static struct resource m5441x_rcm_resource[] = {
{
.start = MCF_RSR,
.end = MCF_RSR,
.flags = IORESOURCE_MEM,
},
};
static int __init m5441x_rcm_init(void)
{
struct platform_device *pdev;
pdev = platform_device_register_simple("mcf-rcm-reset", -1,
m5441x_rcm_resource,
ARRAY_SIZE(m5441x_rcm_resource));
return PTR_ERR_OR_ZERO(pdev);
}
arch_initcall(m5441x_rcm_init);
void __init config_BSP(char *commandp, int size)
{
m5441x_clk_init();