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https://github.com/brain-hackers/u-boot-brain
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857f39d7b0
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>
42 lines
814 B
C
42 lines
814 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Masahiro Yamada <yamada.masahiro@socionext.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <sysreset.h>
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#include <linux/errno.h>
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#include <linux/psci.h>
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static int psci_sysreset_request(struct udevice *dev, enum sysreset_t type)
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{
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unsigned long function_id;
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switch (type) {
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case SYSRESET_WARM:
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case SYSRESET_COLD:
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function_id = PSCI_0_2_FN_SYSTEM_RESET;
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break;
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case SYSRESET_POWER_OFF:
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function_id = PSCI_0_2_FN_SYSTEM_OFF;
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break;
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default:
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return -ENOSYS;
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}
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invoke_psci_fn(function_id, 0, 0, 0);
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return -EINPROGRESS;
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}
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static struct sysreset_ops psci_sysreset_ops = {
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.request = psci_sysreset_request,
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};
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U_BOOT_DRIVER(psci_sysreset) = {
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.name = "psci-sysreset",
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.id = UCLASS_SYSRESET,
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.ops = &psci_sysreset_ops,
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};
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