TQMa7x (revision 01xxx) uses a different (LM75A) temperature sensor.
The two sensors use different I2C address, so we can set both sensors
simultaneously.
Signed-off-by: João Rodrigues <jrodrigues@xxxxxxxxxx>
---
arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
index fe42b0a468..b87560d037 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
@@ -128,7 +128,14 @@ vgen6_reg: vldo4 {
};
};
- /* NXP SE97BTP with temperature sensor + eeprom */
+ /* LM75A - temperature sensor, TQMa7x 01xx */
+ lm75a: temperature-sensor@48 {
+ compatible = "national,lm75a";
+ reg = <0x48>;
+ status = "okay";
+ };
+
+ /* NXP SE97BTP with temperature sensor + eeprom, TQMa7x 02xx */
se97b: temperature-sensor-eeprom@1e {
compatible = "nxp,se97b", "jedec,jc-42.4-temp";
reg = <0x1e>;
--
The differences in the ICs are shown here:
The TQMa7 manual only references the latest version
https://www.tq-group.com/filedownloads/files/products/embedded/manuals/arm/embedded-modul/TQ-Socket/TQMa7x/TQMa7x.UM.0203.pdf
in section 3.2.4, while the board manual
https://www.tq-group.com/filedownloads/files/products/embedded/manuals/arm/carrierboard/MBa7x/MBa7x.UM.0101.pdf
in section 4.1.2 references the old version, introduced by this patch.
I have tested this change in a board which uses the TQMa7x
module, and with this patch we always a temperature sensors available.
Best regards,
--
João Rodrigues <jrodrigues@xxxxxxxxxx>
