|author||Ivan Zaentsev <email@example.com>||2020-09-04 19:00:04 +0300|
|committer||Greg Kroah-Hartman <firstname.lastname@example.org>||2020-10-02 11:49:54 +0200|
w1: w1_therm: Add support for GXCAS GX20MH01 device.
GX20MH01 device shares family number 0x28 with DS18B20. The device is generally compatible with DS18B20. Added are the lowest 2^-5, 2^-6 temperature bits in Config register; R2 bit in Config register enabling 13 and 14 bit resolutions. It is powered up in 14 bit mode. Signed-off-by: Ivan Zaentsev <email@example.com> Link: https://firstname.lastname@example.org Acked-by: Evgeniy Polyakov <email@example.com> Signed-off-by: Greg Kroah-Hartman <firstname.lastname@example.org>
Diffstat (limited to 'Documentation/w1')
1 files changed, 12 insertions, 3 deletions
diff --git a/Documentation/w1/slaves/w1_therm.rst b/Documentation/w1/slaves/w1_therm.rst
index f1148181f53e..00376501a5ef 100644
@@ -6,6 +6,7 @@ Supported chips:
* Maxim ds18*20 based temperature sensors.
* Maxim ds1825 based temperature sensors.
+ * GXCAS GC20MH01 temperature sensor.
Author: Evgeniy Polyakov <email@example.com>
@@ -13,8 +14,8 @@ Author: Evgeniy Polyakov <firstname.lastname@example.org>
-w1_therm provides basic temperature conversion for ds18*20 devices, and the
+w1_therm provides basic temperature conversion for ds18*20, ds28ea00, GX20MH01
Supported family codes:
@@ -130,4 +131,12 @@ conversion and temperature reads 85.00 (powerup value) or 127.94 (insufficient
power), the driver returns a conversion error. Bit mask ``2`` enables poll for
conversion completion (normal power only) by generating read cycles on the bus
after conversion starts. In parasite power mode this feature is not available.
-Feature bit masks may be combined (OR).
+Feature bit masks may be combined (OR). See accompanying sysfs documentation:
+GX20MH01 device shares family number 0x28 with DS18*20. The device is generally
+compatible with DS18B20. Added are lowest 2^-5, 2^-6 temperature bits in Config
+register; R2 bit in Config register enabling 13 and 14 bit resolutions. The
+device is powered up in 14-bit resolution mode. The conversion times specified
+in the datasheet are too low and have to be increased. The device supports
+driver features ``1`` and ``2``.