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TPS65910/TPS65911 PMICs have embedded power control functions used by some device to initiane device power off. Implement it as sysreset driver. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <dm.h>
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#include <i2c.h>
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#include <errno.h>
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#include <sysreset.h>
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#include <power/pmic.h>
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#include <power/tps65910_pmic.h>
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static int tps65910_sysreset_request(struct udevice *dev,
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enum sysreset_t type)
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{
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int val;
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val = pmic_reg_read(dev->parent, TPS65910_REG_DEVICE_CTRL);
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if (val < 0)
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return val;
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/* define power-off to be sequential */
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val |= PWR_OFF_SEQ;
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pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL, val);
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val &= ~DEV_ON;
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switch (type) {
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case SYSRESET_POWER:
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/* TPS65910: DEV_OFF_RST > DEVICE_CTRL */
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pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL,
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val | DEV_OFF_RST);
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break;
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case SYSRESET_POWER_OFF:
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/* TPS65910: DEV_OFF > DEVICE_CTRL */
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pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL,
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val | DEV_OFF);
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break;
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default:
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return -EPROTONOSUPPORT;
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}
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return -EINPROGRESS;
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}
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static struct sysreset_ops tps65910_sysreset = {
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.request = tps65910_sysreset_request,
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};
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U_BOOT_DRIVER(sysreset_tps65910) = {
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.id = UCLASS_SYSRESET,
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.name = TPS65910_RST_DRIVER,
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.ops = &tps65910_sysreset,
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};
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