linux-kernel - Re: [PATCH linux-next v5 07/13] dt-bindings: mfd: Add a document for PECI client mfd

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Message-ID: <fa5a5714-f363-93df-4314-a140eb85747a@linux.intel.com>
Date:   Mon, 18 Jun 2018 10:11:58 -0700
From:   Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, openbmc@...ts.ozlabs.org,
        Andrew Jeffery <andrew@...id.au>,
        James Feist <james.feist@...ux.intel.com>,
        Jason M Biils <jason.m.bills@...ux.intel.com>,
        Joel Stanley <joel@....id.au>,
        Vernon Mauery <vernon.mauery@...ux.intel.com>
Subject: Re: [PATCH linux-next v5 07/13] dt-bindings: mfd: Add a document for
 PECI client mfd

On 6/17/2018 11:03 PM, Lee Jones wrote:
> On Thu, 14 Jun 2018, Jae Hyun Yoo wrote:
> 
> [...]
> 
>>>> +Example:
>>>> +	peci-bus@0 {
>>>
>>> 0?
>>>
>>
>> Because the actual reg value of the peci bus is reg = <0x0 0x60> but
>> anyway it's an example.
>>
>>>> +		#address-cells = <1>;
>>>> +		#size-cells = <0>;
>>>
>>> No 'reg' property?
> 
> 0 is fine, but you really should have a 'reg' property.
> 

Okay, I'll add reg setting example.

>> This is the actual peci bus node which is a parent of this MFD node:
>> 	peci0: peci-bus@0 {
>> 		compatible = "aspeed,ast2500-peci";
>> 		reg = <0x0 0x60>;
>> 		#address-cells = <1>;
>> 		#size-cells = <0>;
>> 		interrupts = <15>;
>> 		clocks = <&syscon ASPEED_CLK_GATE_REFCLK>;
>> 		resets = <&syscon ASPEED_RESET_PECI>;
>> 		clock-frequency = <24000000>;
>> 		msg-timing = <1>;
>> 		addr-timing = <1>;
>> 		rd-sampling-point = <8>;
>> 		cmd-timeout-ms = <1000>;
>> 	};
>>
>>>> +		< more properties >
>>>
>>> Remove this.
>>
>> I dropped all other properties into < more properties > because I want
>> to show the #address-cells and #size-cells to state its sub-nodes
>> should have a single unique reg value. Should I remove this line or the
>> whole parent node?
> 
> Just drop the properties which are unimportant for the example.  You
> do not need to replace them with anything, especially with a non-DT
> compliant string.
> 

Okay, I'll fix it. Thanks a lot!

>>>> +		peci-client@30 {
>>>> +			compatible = "intel,peci-client", "simple-mfd";
>>>> +			reg = <0x30>;
>>>> +		};
>>>> +
>>>> +		peci-client@31 {
>>>> +			compatible = "intel,peci-client", "simple-mfd";
>>>> +			reg = <0x31>;
>>>> +		};
>>>> +	};
>>>
>