The STLM75 is a high-precision digital CMOS temperature sensor IC with a sigma-delta temperature-to-digital converter.
The configuration register mapping is similar to existing lm75 but the sample rate is 150ms(max). Tested on real hardware and verified temperature readings are correct. Signed-off-by: Jagan Teki <[email protected]> --- Documentation/hwmon/lm75 | 5 +++++ drivers/hwmon/Kconfig | 1 + drivers/hwmon/lm75.c | 10 ++++++++++ 3 files changed, 16 insertions(+) diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75 index 2f1120f88c16..010583608f12 100644 --- a/Documentation/hwmon/lm75 +++ b/Documentation/hwmon/lm75 @@ -42,6 +42,11 @@ Supported chips: Addresses scanned: none Datasheet: Publicly available at the ST website http://www.st.com/internet/analog/product/121769.jsp + * ST Microelectronics STLM75 + Prefix: 'stlm75' + Addresses scanned: none + Datasheet: Publicly available at the ST website + https://www.st.com/resource/en/datasheet/stlm75.pdf * Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP75C, TMP175, TMP275 Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp75c', 'tmp275' Addresses scanned: none diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 532a0532d01b..515b2ad872c8 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1035,6 +1035,7 @@ config SENSORS_LM75 - National Semiconductor LM75, LM75A - NXP's LM75A - ST Microelectronics STDS75 + - ST Microelectronics STLM75 - TelCom (now Microchip) TCN75 - Texas Instruments TMP100, TMP101, TMP105, TMP112, TMP75, TMP175, TMP275 diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index c7f20543b2bf..62acb9f16ec5 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -50,6 +50,7 @@ enum lm75_type { /* keep sorted in alphabetical order */ max31725, mcp980x, stds75, + stlm75, tcn75, tmp100, tmp101, @@ -316,6 +317,10 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) data->resolution = 11; data->sample_time = MSEC_PER_SEC; break; + case stlm75: + data->resolution = 9; + data->sample_time = MSEC_PER_SEC / 5; + break; case ds7505: set_mask |= 3 << 5; /* 12-bit mode */ data->resolution = 12; @@ -424,6 +429,7 @@ static const struct i2c_device_id lm75_ids[] = { { "max31726", max31725, }, { "mcp980x", mcp980x, }, { "stds75", stds75, }, + { "stlm75", stlm75, }, { "tcn75", tcn75, }, { "tmp100", tmp100, }, { "tmp101", tmp101, }, @@ -494,6 +500,10 @@ static const struct of_device_id lm75_of_match[] = { .compatible = "st,stds75", .data = (void *)stds75 }, + { + .compatible = "st,stlm75", + .data = (void *)stlm75 + }, { .compatible = "microchip,tcn75", .data = (void *)tcn75 -- 2.18.0.321.gffc6fa0e3
