u-boot/drivers/sysreset/sysreset_psci.c
Urja Rannikko 857f39d7b0 sysreset: switch to using SYSRESET_POWER_OFF for poweroff
It seems that SYSRESET_POWER_OFF was added recently, and all previous code
used SYSRESET_POWER for poweroff. SYSRESET_POWER is supposed to be a
PMIC-level power cycle, not a poweroff.

(Comment by Simon Glass)
SYSRESET_POWER means to do a power reset (removing and reinstating all power)
SYSRESET_POWER_OFF means to turn the device off and leave it off

Signed-off-by: Urja Rannikko <urjaman@gmail.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
(Update comment to help understand the patch)
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2019-08-19 12:43:26 +08:00

41 lines
814 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <common.h>
#include <dm.h>
#include <sysreset.h>
#include <linux/errno.h>
#include <linux/psci.h>
static int psci_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
unsigned long function_id;
switch (type) {
case SYSRESET_WARM:
case SYSRESET_COLD:
function_id = PSCI_0_2_FN_SYSTEM_RESET;
break;
case SYSRESET_POWER_OFF:
function_id = PSCI_0_2_FN_SYSTEM_OFF;
break;
default:
return -ENOSYS;
}
invoke_psci_fn(function_id, 0, 0, 0);
return -EINPROGRESS;
}
static struct sysreset_ops psci_sysreset_ops = {
.request = psci_sysreset_request,
};
U_BOOT_DRIVER(psci_sysreset) = {
.name = "psci-sysreset",
.id = UCLASS_SYSRESET,
.ops = &psci_sysreset_ops,
};