[PATCH] ARM: dts: aspeed: clemente: Remove IOB NIC TMP421 nodes
Mike Hsieh <[email protected]>
| Newsgroups | org.ozlabs.lists.linux-aspeed,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <20260522-clemente-dts-remove-iob-nic-tmp421-v1-1-ee2509a71502@gmail.com> |
Remove the TMP421 sensor entry from the DTS, as it is no longer the primary telemetry source. Accessing the CX8 NIC via I2C while it is powered off causes voltage leakage on the bus, leading to EEPROM corruption on shared I2C devices. Removing this node prevents the BMC from initiating traffic to the NIC during initialization, protecting the integrity of the shared bus. Signed-off-by: Mike Hsieh <[email protected]> --- Remove the TMP421 sensor entry from the DTS, as it is no longer the primary telemetry source. Accessing the CX8 NIC via I2C while it is powered off causes voltage leakage on the bus, leading to EEPROM corruption on shared I2C devices. Removing this node prevents the BMC from initiating traffic to the NIC during initialization, protecting the integrity of the shared bus. --- .../boot/dts/aspeed/aspeed-bmc-facebook-clemente.dts | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-clemente.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-clemente.dts index 2aff21442f11..820d39a92974 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-clemente.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-clemente.dts @@ -443,11 +443,6 @@ i2c0mux2ch0: i2c@0 { #address-cells = <1>; #size-cells = <0>; reg = <0>; - // IOB0 NIC0 TEMP - temperature-sensor@1f { - compatible = "ti,tmp421"; - reg = <0x1f>; - }; }; i2c0mux2ch1: i2c@1 { @@ -466,11 +461,6 @@ i2c0mux2ch3: i2c@3 { #address-cells = <1>; #size-cells = <0>; reg = <3>; - // IOB0 NIC1 TEMP - temperature-sensor@1f { - compatible = "ti,tmp421"; - reg = <0x1f>; - }; }; }; @@ -637,11 +627,6 @@ i2c0mux5ch0: i2c@0 { #address-cells = <1>; #size-cells = <0>; reg = <0>; - // IOB1 NIC0 TEMP - temperature-sensor@1f { - compatible = "ti,tmp421"; - reg = <0x1f>; - }; }; i2c0mux5ch1: i2c@1 { @@ -666,11 +651,6 @@ i2c0mux5ch3: i2c@3 { #address-cells = <1>; #size-cells = <0>; reg = <3>; - // IOB1 NIC1 TEMP - temperature-sensor@1f { - compatible = "ti,tmp421"; - reg = <0x1f>; - }; }; }; }; --- base-commit: 6779b50faa562e6cca1aa6a4649a4d764c6c7e28 change-id: 20260522-clemente-dts-remove-iob-nic-tmp421-89221ba96dd7 Best regards, -- Mike Hsieh <[email protected]>