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hwmon: (lm75) Add NXP P3T1750 support 

Add support for lm75 compatible NXP P3T1750
temperature sensor.

Signed-off-by: Lakshay Piplani <lakshay.piplani@nxp.com>
Link: https://lore.kernel.org/r/20250728041913.3754236-2-lakshay.piplani@nxp.com
[groeck: Fixed alphabetic order for new chip entries]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Lakshay Piplani 2025-07-28 09:49:13 +05:30 committed by Guenter Roeck
parent 6a9b2fb841
commit 83b3354a4a
2 changed files with 17 additions and 2 deletions
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6
Documentation/hwmon/lm75.rst
View File

@ -121,9 +121,9 @@ Supported chips:
https://www.ti.com/product/TMP1075 https://www.ti.com/product/TMP1075
* NXP LM75B, P3T1755, PCT2075 * NXP LM75B, P3T1750, P3T1755, PCT2075
Prefix: 'lm75b', 'p3t1755', 'pct2075' Prefix: 'lm75b', 'p3t1750', 'p3t1755', 'pct2075'
Addresses scanned: none Addresses scanned: none
@ -131,6 +131,8 @@ Supported chips:
https://www.nxp.com/docs/en/data-sheet/LM75B.pdf https://www.nxp.com/docs/en/data-sheet/LM75B.pdf
https://www.nxp.com/docs/en/data-sheet/P3T1750DP.pdf
https://www.nxp.com/docs/en/data-sheet/P3T1755.pdf https://www.nxp.com/docs/en/data-sheet/P3T1755.pdf
https://www.nxp.com/docs/en/data-sheet/PCT2075.pdf https://www.nxp.com/docs/en/data-sheet/PCT2075.pdf

13
drivers/hwmon/lm75.c
View File

@ -39,6 +39,7 @@ enum lm75_type { /* keep sorted in alphabetical order */
max6626, max6626,
max31725, max31725,
mcp980x, mcp980x,
p3t1750,
p3t1755, p3t1755,
pct2075, pct2075,
stds75, stds75,
@ -222,6 +223,13 @@ static const struct lm75_params device_params[] = {
.default_resolution = 9, .default_resolution = 9,
.default_sample_time = MSEC_PER_SEC / 18, .default_sample_time = MSEC_PER_SEC / 18,
}, },
[p3t1750] = {
.clr_mask = 1 << 1 | 1 << 7, /* disable SMBAlert and one-shot */
.default_resolution = 12,
.default_sample_time = 55,
.num_sample_times = 4,
.sample_times = (unsigned int []){ 28, 55, 110, 220 },
},
[p3t1755] = { [p3t1755] = {
.clr_mask = 1 << 1 | 1 << 7, /* disable SMBAlert and one-shot */ .clr_mask = 1 << 1 | 1 << 7, /* disable SMBAlert and one-shot */
.default_resolution = 12, .default_resolution = 12,
@ -805,6 +813,7 @@ static const struct i2c_device_id lm75_i2c_ids[] = {
{ "max31725", max31725, }, { "max31725", max31725, },
{ "max31726", max31725, }, { "max31726", max31725, },
{ "mcp980x", mcp980x, }, { "mcp980x", mcp980x, },
{ "p3t1750", p3t1750, },
{ "p3t1755", p3t1755, }, { "p3t1755", p3t1755, },
{ "pct2075", pct2075, }, { "pct2075", pct2075, },
{ "stds75", stds75, }, { "stds75", stds75, },
@ -916,6 +925,10 @@ static const struct of_device_id __maybe_unused lm75_of_match[] = {
.compatible = "maxim,mcp980x", .compatible = "maxim,mcp980x",
.data = (void *)mcp980x .data = (void *)mcp980x
}, },
{
.compatible = "nxp,p3t1750",
.data = (void *)p3t1750
},
{ {
.compatible = "nxp,p3t1755", .compatible = "nxp,p3t1755",
.data = (void *)p3t1755 .data = (void *)p3t1755