Re: [PATCH linux dev-4.10 4/6] Documentation: dt-bindings: Add a generic PECI hwmon
On 1/10/2018 4:20 AM, Arnd Bergmann wrote: On Tue, Jan 9, 2018 at 11:31 PM, Jae Hyun Yoowrote: This commit add a dt-bindings document for a generic PECI hwmon driver. Signed-off-by: Jae Hyun Yoo --- .../devicetree/bindings/hwmon/peci-hwmon.txt | 33 ++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/peci-hwmon.txt diff --git a/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt b/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt new file mode 100644 index 000..20b86f5 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt @@ -0,0 +1,33 @@ +* Generic PECI (Platform Environment Control Interface) hwmon driver. + +Dependency: +- This driver uses a PECI misc driver as a controller interface so one of PECI + misc drivers which provides compatible ioctls has to be enabled. The binding should only explain how we describe the hardware in an operating-system independent way, but not talk about how an OS is supposed to implement those drivers. Having multiple drivers each provide an exported function is not possible in Linux: it immediately breaks building an 'allyesconfig' kernel, and prevents you from running the same kernel across multiple implementations, so that has to be redesigned anyway. Agreed, I'll consider redesigning of it. +Required properties: +- compatible: "peci-hwmon" +- cpu-id: Should contain CPU socket ID + - 0 ~ 7 + +Optional properties: +- show-core: If this protperty is defined, core tmeperature attrubites will be s/protperty/property/ s/tmeperature/temperature/ s/attrubites/attributes/ Oops! I made this many typos in this single line. Thanks for your pointing it out. Will fix these. +enumerated. +- dimm-nums: Should contain the number of DIMM slots that attached to each CPU +which is indicated by cpu-id. + 0 ~ 16 (default: 16) +In case of 0, DIMM temperature attrubites will not be enumerated. Is this only an initial list that you expect to be extended in the future, or is this a complete list of sensors that can ever be connected to PECI? Should this be PECI version specific? Arnd The maximum supportable number of dimm slots is not PECI version specific but depends on CPU architecture. Currently IA supports up to 16 slot as the maximum but it could vary in the future architecture. Thanks, Jae -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH linux dev-4.10 4/6] Documentation: dt-bindings: Add a generic PECI hwmon
On Tue, Jan 9, 2018 at 11:31 PM, Jae Hyun Yoowrote: > This commit add a dt-bindings document for a generic PECI hwmon > driver. > > Signed-off-by: Jae Hyun Yoo > --- > .../devicetree/bindings/hwmon/peci-hwmon.txt | 33 > ++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/hwmon/peci-hwmon.txt > > diff --git a/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt > b/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt > new file mode 100644 > index 000..20b86f5 > --- /dev/null > +++ b/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt > @@ -0,0 +1,33 @@ > +* Generic PECI (Platform Environment Control Interface) hwmon driver. > + > +Dependency: > +- This driver uses a PECI misc driver as a controller interface so one of > PECI > + misc drivers which provides compatible ioctls has to be enabled. The binding should only explain how we describe the hardware in an operating-system independent way, but not talk about how an OS is supposed to implement those drivers. Having multiple drivers each provide an exported function is not possible in Linux: it immediately breaks building an 'allyesconfig' kernel, and prevents you from running the same kernel across multiple implementations, so that has to be redesigned anyway. > +Required properties: > +- compatible: "peci-hwmon" > +- cpu-id: Should contain CPU socket ID > + - 0 ~ 7 > + > +Optional properties: > +- show-core: If this protperty is defined, core tmeperature attrubites will > be s/protperty/property/ s/tmeperature/temperature/ s/attrubites/attributes/ > +enumerated. > +- dimm-nums: Should contain the number of DIMM slots that attached to each > CPU > +which is indicated by cpu-id. > + 0 ~ 16 (default: 16) > +In case of 0, DIMM temperature attrubites will not be enumerated. Is this only an initial list that you expect to be extended in the future, or is this a complete list of sensors that can ever be connected to PECI? Should this be PECI version specific? Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH linux dev-4.10 4/6] Documentation: dt-bindings: Add a generic PECI hwmon
This commit add a dt-bindings document for a generic PECI hwmon driver. Signed-off-by: Jae Hyun Yoo--- .../devicetree/bindings/hwmon/peci-hwmon.txt | 33 ++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/peci-hwmon.txt diff --git a/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt b/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt new file mode 100644 index 000..20b86f5 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/peci-hwmon.txt @@ -0,0 +1,33 @@ +* Generic PECI (Platform Environment Control Interface) hwmon driver. + +Dependency: +- This driver uses a PECI misc driver as a controller interface so one of PECI + misc drivers which provides compatible ioctls has to be enabled. + +Required properties: +- compatible: "peci-hwmon" +- cpu-id: Should contain CPU socket ID + - 0 ~ 7 + +Optional properties: +- show-core: If this protperty is defined, core tmeperature attrubites will be +enumerated. +- dimm-nums: Should contain the number of DIMM slots that attached to each CPU +which is indicated by cpu-id. + 0 ~ 16 (default: 16) +In case of 0, DIMM temperature attrubites will not be enumerated. + +Example: + peci-hwmon0 { + compatible = "peci-hwmon"; + cpu-id = <0>; + show-core; + dimm-nums = <16>; + }; + + peci-hwmon1 { + compatible = "peci-hwmon"; + cpu-id = <1>; + show-core; + dimm-nums = <16>; + }; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html