[PATCH] ARM: dts: Fix undocumented LM75 compatible nodes
From: "Rob Herring (Arm)" <robh@kernel.org>
Date: 2024-08-08 16:49:49
Also in:
imx, linux-aspeed, linux-devicetree, linux-omap, lkml, openbmc
Subsystem:
arm/aspeed machine support, arm/freescale imx / mxc arm architecture, arm/lpc18xx architecture, arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, arm/nuvoton npcm architecture, arm/socfpga architecture, omap device tree support, omap/newflow nanobone machine support, the rest, tq systems board & driver support · Maintainers:
Joel Stanley, Andrew Jeffery, Frank Li, Sascha Hauer, Vladimir Zapolskiy, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Avi Fishman, Tomer Maimon, Tali Perry, Dinh Nguyen, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Mark Jackson, Linus Torvalds
"lm75" without any vendor is undocumented. It works with the Linux kernel since the I2C subsystem will do matches of the compatible string without a vendor prefix to the i2c_device_id and/or driver name. Mostly replace "lm75" with "national,lm75" as that's the original part vendor and the compatible which matches what "lm75" matched with. In a couple of cases the node name or compatible gives a clue to the actual part and vendor and a more specific compatible can be used. In these cases, it does change the variant the kernel picks. "nct75" is an OnSemi part which is compatible with TI TMP75C based on a comparison of the OnSemi NCT75 datasheet and configuration the Linux driver uses. Adding an OnSemi compatible would be an ABI change. "nxp,lm75" is most likely an NXP part. NXP makes a LM75A and LM75B. Both are 11-bit resolution and 100ms sample time, so "national,lm75b" is the closest match. While we're here, fix the node names to use the generic name "temperature-sensor". Signed-off-by: Rob Herring (Arm) <robh@kernel.org> --- SoC maintainers, Please take this directly. --- .../aspeed/aspeed-bmc-facebook-greatlakes.dts | 2 +- .../socfpga/socfpga_cyclone5_vining_fpga.dts | 4 +-- .../dts/marvell/armada-385-clearfog-gtr.dtsi | 8 ++--- .../boot/dts/nuvoton/nuvoton-npcm730-kudo.dts | 32 +++++++++---------- .../boot/dts/nuvoton/nuvoton-npcm750-evb.dts | 6 ++-- arch/arm/boot/dts/nxp/imx/imx53-mba53.dts | 4 +-- arch/arm/boot/dts/nxp/imx/imx53-tqma53.dtsi | 4 +-- .../dts/nxp/lpc/lpc4357-ea4357-devkit.dts | 4 +-- .../boot/dts/nxp/lpc/lpc4357-myd-lpc4357.dts | 2 +- arch/arm/boot/dts/ti/omap/am335x-nano.dts | 2 +- .../boot/dts/xilinx/zynq-zturn-common.dtsi | 4 +-- 11 files changed, 36 insertions(+), 36 deletions(-)
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts
index 998598c15fd0..49914a4a179f 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-greatlakes.dts@@ -201,7 +201,7 @@ eeprom@54 { &i2c12 { status = "okay"; temperature-sensor@4f { - compatible = "lm75"; + compatible = "national,lm75"; reg = <0x4f>; }; };
diff --git a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_vining_fpga.dts b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_vining_fpga.dts
index 65f390bf8975..84f39dec3c42 100644
--- a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_vining_fpga.dts
+++ b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_vining_fpga.dts@@ -130,8 +130,8 @@ gpio: pca9557@1f { #gpio-cells = <2>; }; - temp: lm75@48 { - compatible = "lm75"; + temp: temperature-sensor@48 { + compatible = "national,lm75"; reg = <0x48>; };
diff --git a/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr.dtsi b/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr.dtsi
index f3a3cb6ac311..8208c6a9627a 100644
--- a/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr.dtsi
+++ b/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr.dtsi@@ -423,14 +423,14 @@ &i2c0 { status = "okay"; /* U26 temperature sensor placed near SoC */ - temp1: nct75@4c { - compatible = "lm75"; + temp1: temperature-sensor@4c { + compatible = "ti,tmp75c"; reg = <0x4c>; }; /* U27 temperature sensor placed near RTC battery */ - temp2: nct75@4d { - compatible = "lm75"; + temp2: temperature-sensor@4d { + compatible = "ti,tmp75c"; reg = <0x4d>; };
diff --git a/arch/arm/boot/dts/nuvoton/nuvoton-npcm730-kudo.dts b/arch/arm/boot/dts/nuvoton/nuvoton-npcm730-kudo.dts
index 1f07ba382910..886a87dfcd0d 100644
--- a/arch/arm/boot/dts/nuvoton/nuvoton-npcm730-kudo.dts
+++ b/arch/arm/boot/dts/nuvoton/nuvoton-npcm730-kudo.dts@@ -531,8 +531,8 @@ i2c@4 { reg = <4>; // INLET1_T - lm75@5c { - compatible = "ti,lm75"; + temperature-sensor@5c { + compatible = "national,lm75"; reg = <0x5c>; }; };
@@ -543,8 +543,8 @@ i2c@5 { reg = <5>; // OUTLET1_T - lm75@5c { - compatible = "ti,lm75"; + temperature-sensor@5c { + compatible = "national,lm75"; reg = <0x5c>; }; };
@@ -555,8 +555,8 @@ i2c@6 { reg = <6>; // OUTLET2_T - lm75@5c { - compatible = "ti,lm75"; + temperature-sensor@5c { + compatible = "national,lm75"; reg = <0x5c>; }; };
@@ -567,8 +567,8 @@ i2c@7 { reg = <7>; // OUTLET3_T - lm75@5c { - compatible = "ti,lm75"; + temperature-sensor@5c { + compatible = "national,lm75"; reg = <0x5c>; }; };
@@ -697,8 +697,8 @@ i2c@3 { reg = <3>; // M2_ZONE_T - lm75@28 { - compatible = "ti,lm75"; + temperature-sensor@28 { + compatible = "national,lm75"; reg = <0x28>; }; };
@@ -709,8 +709,8 @@ i2c@4 { reg = <4>; // BATT_ZONE_T - lm75@29 { - compatible = "ti,lm75"; + temperature-sensor@29 { + compatible = "national,lm75"; reg = <0x29>; }; };
@@ -721,8 +721,8 @@ i2c@5 { reg = <5>; // NBM1_ZONE_T - lm75@28 { - compatible = "ti,lm75"; + temperature-sensor@28 { + compatible = "national,lm75"; reg = <0x28>; }; };
@@ -732,8 +732,8 @@ i2c@6 { reg = <6>; // NBM2_ZONE_T - lm75@29 { - compatible = "ti,lm75"; + temperature-sensor@29 { + compatible = "national,lm75"; reg = <0x29>; }; };
diff --git a/arch/arm/boot/dts/nuvoton/nuvoton-npcm750-evb.dts b/arch/arm/boot/dts/nuvoton/nuvoton-npcm750-evb.dts
index f53d45fa1de8..bcdcb30c7bf6 100644
--- a/arch/arm/boot/dts/nuvoton/nuvoton-npcm750-evb.dts
+++ b/arch/arm/boot/dts/nuvoton/nuvoton-npcm750-evb.dts@@ -198,7 +198,7 @@ &i2c0 { clock-frequency = <100000>; status = "okay"; lm75@48 { - compatible = "lm75"; + compatible = "national,lm75"; reg = <0x48>; status = "okay"; };
@@ -208,8 +208,8 @@ lm75@48 { &i2c1 { clock-frequency = <100000>; status = "okay"; - lm75@48 { - compatible = "lm75"; + temperature-sensor@48 { + compatible = "national,lm75"; reg = <0x48>; status = "okay"; };
diff --git a/arch/arm/boot/dts/nxp/imx/imx53-mba53.dts b/arch/arm/boot/dts/nxp/imx/imx53-mba53.dts
index 2117de872703..d155b3ec22ef 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-mba53.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx53-mba53.dts@@ -175,8 +175,8 @@ expander: pca9554@20 { gpio-controller; }; - sensor2: lm75@49 { - compatible = "lm75"; + sensor2: temperature-sensor@49 { + compatible = "national,lm75"; reg = <0x49>; }; };
diff --git a/arch/arm/boot/dts/nxp/imx/imx53-tqma53.dtsi b/arch/arm/boot/dts/nxp/imx/imx53-tqma53.dtsi
index b2d7271d1d24..d01c3aee0272 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-tqma53.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx53-tqma53.dtsi@@ -254,8 +254,8 @@ pmic: mc34708@8 { interrupts = <6 4>; /* PATA_DATA6, active high */ }; - sensor1: lm75@48 { - compatible = "lm75"; + sensor1: temperature-sensor@48 { + compatible = "national,lm75"; reg = <0x48>; };
diff --git a/arch/arm/boot/dts/nxp/lpc/lpc4357-ea4357-devkit.dts b/arch/arm/boot/dts/nxp/lpc/lpc4357-ea4357-devkit.dts
index 224f80a4a31d..4aefbc01dfc0 100644
--- a/arch/arm/boot/dts/nxp/lpc/lpc4357-ea4357-devkit.dts
+++ b/arch/arm/boot/dts/nxp/lpc/lpc4357-ea4357-devkit.dts@@ -482,8 +482,8 @@ mma7455@1d { reg = <0x1d>; }; - lm75@48 { - compatible = "nxp,lm75"; + temperature-sensor@48 { + compatible = "national,lm75b"; reg = <0x48>; };
diff --git a/arch/arm/boot/dts/nxp/lpc/lpc4357-myd-lpc4357.dts b/arch/arm/boot/dts/nxp/lpc/lpc4357-myd-lpc4357.dts
index 1f84654df50c..846afb8ccbf1 100644
--- a/arch/arm/boot/dts/nxp/lpc/lpc4357-myd-lpc4357.dts
+++ b/arch/arm/boot/dts/nxp/lpc/lpc4357-myd-lpc4357.dts@@ -511,7 +511,7 @@ &i2c1 { clock-frequency = <400000>; sensor@49 { - compatible = "lm75"; + compatible = "national,lm75"; reg = <0x49>; };
diff --git a/arch/arm/boot/dts/ti/omap/am335x-nano.dts b/arch/arm/boot/dts/ti/omap/am335x-nano.dts
index 26b5510cb3d1..56929059f5af 100644
--- a/arch/arm/boot/dts/ti/omap/am335x-nano.dts
+++ b/arch/arm/boot/dts/ti/omap/am335x-nano.dts@@ -231,7 +231,7 @@ tps: tps@24 { }; temperature-sensor@48 { - compatible = "lm75"; + compatible = "national,lm75"; reg = <0x48>; };
diff --git a/arch/arm/boot/dts/xilinx/zynq-zturn-common.dtsi b/arch/arm/boot/dts/xilinx/zynq-zturn-common.dtsi
index dfb1fbafe3aa..33b02e05ce82 100644
--- a/arch/arm/boot/dts/xilinx/zynq-zturn-common.dtsi
+++ b/arch/arm/boot/dts/xilinx/zynq-zturn-common.dtsi@@ -97,9 +97,9 @@ &i2c0 { status = "okay"; clock-frequency = <400000>; - stlm75@49 { + temperature-sensor@49 { status = "okay"; - compatible = "lm75"; + compatible = "st,stlm75"; reg = <0x49>; };
--
2.43.0