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Date:   Mon, 16 Apr 2018 13:14:23 -0500
From:   Rob Herring <robh@...nel.org>
To:     Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>
Cc:     Alan Cox <alan@...ux.intel.com>, Andrew Jeffery <andrew@...id.au>,
        Andrew Lunn <andrew@...n.ch>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Fengguang Wu <fengguang.wu@...el.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Haiyue Wang <haiyue.wang@...ux.intel.com>,
        James Feist <james.feist@...ux.intel.com>,
        Jason M Biils <jason.m.bills@...ux.intel.com>,
        Jean Delvare <jdelvare@...e.com>,
        Joel Stanley <joel@....id.au>,
        Julia Cartwright <juliac@....teric.us>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Milton Miller II <miltonm@...ibm.com>,
        Pavel Machek <pavel@....cz>,
        Randy Dunlap <rdunlap@...radead.org>,
        Stef van Os <stef.van.os@...drive-technologies.com>,
        Sumeet R Pawnikar <sumeet.r.pawnikar@...el.com>,
        Vernon Mauery <vernon.mauery@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-hwmon@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, openbmc@...ts.ozlabs.org
Subject: Re: [PATCH v3 07/10] Documentation: dt-bindings: Add documents for
 PECI hwmon client drivers

On Tue, Apr 10, 2018 at 11:32:09AM -0700, Jae Hyun Yoo wrote:
> This commit adds dt-bindings documents for PECI cputemp and dimmtemp client
> drivers.

"dt-bindings: hwmon: ..." for the subject.

> 
> Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>
> Reviewed-by: Haiyue Wang <haiyue.wang@...ux.intel.com>
> Reviewed-by: James Feist <james.feist@...ux.intel.com>
> Reviewed-by: Vernon Mauery <vernon.mauery@...ux.intel.com>
> Cc: Alan Cox <alan@...ux.intel.com>
> Cc: Andrew Jeffery <andrew@...id.au>
> Cc: Andrew Lunn <andrew@...n.ch>
> Cc: Andy Shevchenko <andriy.shevchenko@...el.com>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Fengguang Wu <fengguang.wu@...el.com>
> Cc: Greg KH <gregkh@...uxfoundation.org>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Jason M Biils <jason.m.bills@...ux.intel.com>
> Cc: Jean Delvare <jdelvare@...e.com>
> Cc: Joel Stanley <joel@....id.au>
> Cc: Julia Cartwright <juliac@....teric.us>
> Cc: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
> Cc: Milton Miller II <miltonm@...ibm.com>
> Cc: Pavel Machek <pavel@....cz>
> Cc: Randy Dunlap <rdunlap@...radead.org>
> Cc: Stef van Os <stef.van.os@...drive-technologies.com>
> Cc: Sumeet R Pawnikar <sumeet.r.pawnikar@...el.com>
> ---
>  .../devicetree/bindings/hwmon/peci-cputemp.txt     | 24 +++++++++++++++++++++
>  .../devicetree/bindings/hwmon/peci-dimmtemp.txt    | 25 ++++++++++++++++++++++
>  2 files changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/peci-cputemp.txt
>  create mode 100644 Documentation/devicetree/bindings/hwmon/peci-dimmtemp.txt
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/peci-cputemp.txt b/Documentation/devicetree/bindings/hwmon/peci-cputemp.txt
> new file mode 100644
> index 000000000000..d5530ef9cfd2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/peci-cputemp.txt
> @@ -0,0 +1,24 @@
> +Bindings for Intel PECI (Platform Environment Control Interface) cputemp driver.
> +
> +Required properties:
> +- compatible : Should be "intel,peci-cputemp".
> +- reg        : Should contain address of a client CPU. Address range of CPU
> +	       clients is starting from 0x30 based on PECI specification.
> +	       <0x30> .. <0x37> (depends on the PECI_OFFSET_MAX definition)

Again, where is PECI_OFFSET_MAX defined? It can't depend on something in 
the kernel.

> +
> +Example:
> +	peci-bus@0 {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		< more properties >
> +
> +		peci-cputemp@...0 {
> +			compatible = "intel,peci-cputemp";
> +			reg = <0x30>;
> +		};
> +
> +		peci-cputemp@...1 {
> +			compatible = "intel,peci-cputemp";
> +			reg = <0x31>;
> +		};
> +	};
> diff --git a/Documentation/devicetree/bindings/hwmon/peci-dimmtemp.txt b/Documentation/devicetree/bindings/hwmon/peci-dimmtemp.txt
> new file mode 100644
> index 000000000000..56e5deb61e5c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/peci-dimmtemp.txt
> @@ -0,0 +1,25 @@
> +Bindings for Intel PECI (Platform Environment Control Interface) dimmtemp
> +driver.
> +
> +Required properties:
> +- compatible : Should be "intel,peci-dimmtemp".
> +- reg        : Should contain address of a client CPU. Address range of CPU
> +	       clients is starting from 0x30 based on PECI specification.
> +	       <0x30> .. <0x37> (depends on the PECI_OFFSET_MAX definition)
> +
> +Example:
> +	peci-bus@0 {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		< more properties >
> +
> +		peci-dimmtemp@...0 {

unit-address is wrong.

It is a different bus from cputemp? Otherwise, you have conflicting 
addresses. If that's the case, probably should make it clear by showing 
different host adapters for each example.

> +			compatible = "intel,peci-dimmtemp";
> +			reg = <0x30>;
> +		};
> +
> +		peci-dimmtemp@...1 {
> +			compatible = "intel,peci-dimmtemp";
> +			reg = <0x31>;
> +		};
> +	};
> -- 
> 2.16.2
> 
> --
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