Add support for LTM4673. The LTM4673 is a quad output, dual 12A and dual
5A, switching mode DC/DC step-down μModule regulator integrated with
4-channel power system manager.
This adds only the chip id, the checks for the manufacturer special id,
and the relevant attributes for the device's pmbus_driver_info.
The device does not support clear peaks.
Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@xxxxxxxxxx>
---
Documentation/hwmon/ltc2978.rst | 8 ++++++++
drivers/hwmon/pmbus/Kconfig | 4 ++--
drivers/hwmon/pmbus/ltc2978.c | 25 +++++++++++++++++++++++--
3 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/Documentation/hwmon/ltc2978.rst b/Documentation/hwmon/ltc2978.rst
index 651ca4904c6649748f366b023fbb337ec25b22b0..feae53eb9fbf5cff8f7a484c163acad011315d8d 100644
--- a/Documentation/hwmon/ltc2978.rst
+++ b/Documentation/hwmon/ltc2978.rst
@@ -151,6 +151,14 @@ Supported chips:
Datasheet: https://www.analog.com/en/products/ltm4644
+ * Linear Technology LTM4673
+
+ Prefix: 'ltm4673'
+
+ Addresses scanned: -
+
+ Datasheet: https://www.analog.com/en/products/ltm4673
+
* Linear Technology LTM4675
Prefix: 'ltm4675'
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 419469f40ba0283c72b71071566efec575263e98..675b0d4703d87c9d5654489d0d770661ff0dba11 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -234,8 +234,8 @@ config SENSORS_LTC2978_REGULATOR
help
If you say yes here you get regulator support for Linear Technology
LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7841,
- LTC7880, LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,
- LTM4686, and LTM4700.
+ LTC7880, LTM4644, LTM4673, LTM4675, LTM4676, LTM4677, LTM4678,
+ LTM4680, LTM4686, and LTM4700.
config SENSORS_LTC3815
tristate "Linear Technologies LTC3815"
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index 4c306943383ab368ad5f9700c1e09bc873822e44..658cb1173291006d83033a6363ac52d24635abaf 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -26,8 +26,8 @@ enum chips {
ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7132,
ltc7841, ltc7880,
/* Modules */
- ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686,
- ltm4700,
+ ltm2987, ltm4664, ltm4673, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680,
+ ltm4686, ltm4700,
};
/* Common for all chips */
@@ -86,6 +86,8 @@ enum chips {
#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
#define LTM2987_ID_B 0x8020
#define LTM4664_ID 0x4120
+#define LTM4673_ID_REV1 0x0230
+#define LTM4673_ID 0x4480
#define LTM4675_ID 0x47a0
#define LTM4676_ID_REV1 0x4400
#define LTM4676_ID_REV2 0x4480
@@ -554,6 +556,7 @@ static const struct i2c_device_id ltc2978_id[] = {
{"ltc7880", ltc7880},
{"ltm2987", ltm2987},
{"ltm4664", ltm4664},
+ {"ltm4673", ltm4673},
{"ltm4675", ltm4675},
{"ltm4676", ltm4676},
{"ltm4677", ltm4677},
@@ -665,6 +668,8 @@ static int ltc2978_get_id(struct i2c_client *client)
return ltm2987;
else if (chip_id == LTM4664_ID)
return ltm4664;
+ else if (chip_id == LTM4673_ID || chip_id == LTM4673_ID_REV1)
+ return ltm4673;
else if (chip_id == LTM4675_ID)
return ltm4675;
else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
@@ -869,6 +874,21 @@ static int ltc2978_probe(struct i2c_client *client)
| PMBUS_HAVE_IOUT
| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
break;
+ case ltm4673:
+ data->features |= FEAT_NEEDS_POLLING;
+ info->read_word_data = ltc2975_read_word_data;
+ info->pages = LTC2974_NUM_PAGES;
+ info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
+ | PMBUS_HAVE_TEMP2;
+ for (i = 0; i < info->pages; i++) {
+ info->func[i] |= PMBUS_HAVE_IIN
+ | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
+ | PMBUS_HAVE_PIN
+ | PMBUS_HAVE_POUT
+ | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
+ }
+ break;
default:
return -ENODEV;
}
@@ -926,6 +946,7 @@ static const struct of_device_id ltc2978_of_match[] = {
{ .compatible = "lltc,ltc7880" },
{ .compatible = "lltc,ltm2987" },
{ .compatible = "lltc,ltm4664" },
+ { .compatible = "lltc,ltm4673" },
{ .compatible = "lltc,ltm4675" },
{ .compatible = "lltc,ltm4676" },
{ .compatible = "lltc,ltm4677" },
--
2.39.5
