hwmon: (lm75) Add NXP P3T1755 support

Add this LM75 compatible sensor which needs a separate entry because of
its default sampling time and SMBusAlert handling.

Signed-off-by: Wolfram Sang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>

Author: Wolfram Sang

Documentation/hwmon/lm75.rst

@@ -121,16 +121,18 @@ Supported chips:
 
          https://www.ti.com/product/TMP1075
 
-  * NXP LM75B, PCT2075
+  * NXP LM75B, P3T1755, PCT2075
 
-    Prefix: 'lm75b', 'pct2075'
+    Prefix: 'lm75b', 'p3t1755', 'pct2075'
 
     Addresses scanned: none
 
     Datasheet: Publicly available at the NXP website
 
 	       https://www.nxp.com/documents/data_sheet/LM75B.pdf
 
+               https://www.nxp.com/docs/en/data-sheet/P3T1755.pdf
+
                https://www.nxp.com/docs/en/data-sheet/PCT2075.pdf
 
   * AMS OSRAM AS6200

drivers/hwmon/lm75.c

@@ -38,6 +38,7 @@ enum lm75_type {		/* keep sorted in alphabetical order */
 	max6626,
 	max31725,
 	mcp980x,
+	p3t1755,
 	pct2075,
 	stds75,
 	stlm75,
@@ -222,6 +223,13 @@ static const struct lm75_params device_params[] = {
 		.default_resolution = 9,
 		.default_sample_time = MSEC_PER_SEC / 18,
 	},
+	[p3t1755] = {
+		.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 },
+	},
 	[pct2075] = {
 		.default_resolution = 11,
 		.default_sample_time = MSEC_PER_SEC / 10,
@@ -734,6 +742,7 @@ static const struct i2c_device_id lm75_ids[] = {
 	{ "max31725", max31725, },
 	{ "max31726", max31725, },
 	{ "mcp980x", mcp980x, },
+	{ "p3t1755", p3t1755, },
 	{ "pct2075", pct2075, },
 	{ "stds75", stds75, },
 	{ "stlm75", stlm75, },
@@ -813,6 +822,10 @@ static const struct of_device_id __maybe_unused lm75_of_match[] = {
 		.compatible = "maxim,mcp980x",
 		.data = (void *)mcp980x
 	},
+	{
+		.compatible = "nxp,p3t1755",
+		.data = (void *)p3t1755
+	},
 	{
 		.compatible = "nxp,pct2075",
 		.data = (void *)pct2075