1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
4 */
5
6 #include <dm.h>
7 #include <i2c.h>
8 #include <errno.h>
9 #include <sysreset.h>
10 #include <power/pmic.h>
11 #include <power/tps65910_pmic.h>
12
tps65910_sysreset_request(struct udevice * dev,enum sysreset_t type)13 static int tps65910_sysreset_request(struct udevice *dev,
14 enum sysreset_t type)
15 {
16 int val;
17
18 val = pmic_reg_read(dev->parent, TPS65910_REG_DEVICE_CTRL);
19 if (val < 0)
20 return val;
21
22 /* define power-off to be sequential */
23 val |= PWR_OFF_SEQ;
24 pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL, val);
25
26 val &= ~DEV_ON;
27
28 switch (type) {
29 case SYSRESET_POWER:
30 /* TPS65910: DEV_OFF_RST > DEVICE_CTRL */
31 pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL,
32 val | DEV_OFF_RST);
33 break;
34 case SYSRESET_POWER_OFF:
35 /* TPS65910: DEV_OFF > DEVICE_CTRL */
36 pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL,
37 val | DEV_OFF);
38 break;
39 default:
40 return -EPROTONOSUPPORT;
41 }
42
43 return -EINPROGRESS;
44 }
45
46 static struct sysreset_ops tps65910_sysreset = {
47 .request = tps65910_sysreset_request,
48 };
49
50 U_BOOT_DRIVER(sysreset_tps65910) = {
51 .id = UCLASS_SYSRESET,
52 .name = TPS65910_RST_DRIVER,
53 .ops = &tps65910_sysreset,
54 };
55