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hwmon: (pmbus/tps53679) Add support for TPS53685 

The TPS53685 is a fully AMD SVI3 compliant step down controller with
trans-inductor voltage regulator(TLVR) topology support, dual channels,
built-in non-volatile memory (NVM), PMBus interface, and full compatible
with TI NexFET smart power stages.

Add support for it to the tps53679 driver.

Signed-off-by: Chiang Brian <chiang.brian@inventec.com>
Link: https://lore.kernel.org/r/20250619064223.3165523-3-chiang.brian@inventec.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Chiang Brian 2025-06-19 14:42:23 +08:00 committed by Guenter Roeck
parent a6945f39d9
commit 75ca1e5875
2 changed files with 39 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Documentation/hwmon/tps53679.rst
View File

@ -43,6 +43,14 @@ Supported chips:
Datasheet: https://www.ti.com/lit/gpn/TPS53681
* Texas Instruments TPS53685
Prefix: 'tps53685'
Addresses scanned: -
Datasheet: https://www.ti.com/lit/gpn/TPS53685
* Texas Instruments TPS53688
Prefix: 'tps53688'

37
drivers/hwmon/pmbus/tps53679.c
View File

@ -16,7 +16,7 @@
#include "pmbus.h"
enum chips {
tps53647, tps53667, tps53676, tps53679, tps53681, tps53688
tps53647, tps53667, tps53676, tps53679, tps53681, tps53685, tps53688
};
#define TPS53647_PAGE_NUM 1
@ -31,7 +31,8 @@ enum chips {
#define TPS53679_PROT_VR13_5MV 0x07 /* VR13.0 mode, 5-mV DAC */
#define TPS53679_PAGE_NUM 2
#define TPS53681_DEVICE_ID 0x81
#define TPS53681_DEVICE_ID "\x81"
#define TPS53685_DEVICE_ID "TIShP"
#define TPS53681_PMBUS_REVISION 0x33
@ -86,10 +87,12 @@ static int tps53679_identify_phases(struct i2c_client *client,
}
static int tps53679_identify_chip(struct i2c_client *client,
u8 revision, u16 id)
u8 revision, char *id)
{
u8 buf[I2C_SMBUS_BLOCK_MAX];
int ret;
int buf_len;
int id_len;
ret = pmbus_read_byte_data(client, 0, PMBUS_REVISION);
if (ret < 0)
@ -102,8 +105,14 @@ static int tps53679_identify_chip(struct i2c_client *client,
ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);
if (ret < 0)
return ret;
if (ret != 1 || buf[0] != id) {
dev_err(&client->dev, "Unexpected device ID 0x%x\n", buf[0]);
/* Adjust length if null terminator if present */
buf_len = (buf[ret - 1] != '\x00' ? ret : ret - 1);
id_len = strlen(id);
if (buf_len != id_len || strncmp(id, buf, id_len)) {
dev_err(&client->dev, "Unexpected device ID: %*ph\n", ret, buf);
return -ENODEV;
}
return 0;
@ -117,7 +126,7 @@ static int tps53679_identify_chip(struct i2c_client *client,
*/
static int tps53679_identify_multiphase(struct i2c_client *client,
struct pmbus_driver_info *info,
int pmbus_rev, int device_id)
int pmbus_rev, char *device_id)
{
int ret;
@ -138,6 +147,16 @@ static int tps53679_identify(struct i2c_client *client,
return tps53679_identify_mode(client, info);
}
static int tps53685_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
info->func[1] |= PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
PMBUS_HAVE_STATUS_INPUT;
info->format[PSC_VOLTAGE_OUT] = linear;
return tps53679_identify_chip(client, TPS53681_PMBUS_REVISION,
TPS53685_DEVICE_ID);
}
static int tps53681_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
@ -263,6 +282,10 @@ static int tps53679_probe(struct i2c_client *client)
info->identify = tps53681_identify;
info->read_word_data = tps53681_read_word_data;
break;
case tps53685:
info->pages = TPS53679_PAGE_NUM;
info->identify = tps53685_identify;
break;
default:
return -ENODEV;
}
@ -277,6 +300,7 @@ static const struct i2c_device_id tps53679_id[] = {
{"tps53676", tps53676},
{"tps53679", tps53679},
{"tps53681", tps53681},
{"tps53685", tps53685},
{"tps53688", tps53688},
{}
};
@ -289,6 +313,7 @@ static const struct of_device_id __maybe_unused tps53679_of_match[] = {
{.compatible = "ti,tps53676", .data = (void *)tps53676},
{.compatible = "ti,tps53679", .data = (void *)tps53679},
{.compatible = "ti,tps53681", .data = (void *)tps53681},
{.compatible = "ti,tps53685", .data = (void *)tps53685},
{.compatible = "ti,tps53688", .data = (void *)tps53688},
{}
};