linux-kernel - Re: [Patch v6 3/4] dt-bindings: memory: Update reg maxitems for tegra186

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Message-ID: <81686bc4-c580-862b-1c29-51b34e419154@nvidia.com>
Date:   Mon, 11 Apr 2022 20:32:40 +0530
From:   Ashish Mhetre <amhetre@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>, krzysztof.kozlowski@...aro.org,
        thierry.reding@...il.com, jonathanh@...dia.com, robh+dt@...nel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     vdumpa@...dia.com, Snikam@...dia.com
Subject: Re: [Patch v6 3/4] dt-bindings: memory: Update reg maxitems for
 tegra186



On 4/10/2022 7:51 PM, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
> 
> 
> 06.04.2022 08:24, Ashish Mhetre пишет:
>>           memory-controller@...0000 {
>>               compatible = "nvidia,tegra186-mc";
>> -            reg = <0x0 0x02c00000 0x0 0xb0000>;
>> +            reg = <0x0 0x02c00000 0x0 0x10000>,    /* MC-SID */
>> +                  <0x0 0x02c10000 0x0 0x10000>,    /* Broadcast channel */
>> +                  <0x0 0x02c20000 0x0 0x10000>,    /* MC0 */
>> +                  <0x0 0x02c30000 0x0 0x10000>,    /* MC1 */
>> +                  <0x0 0x02c40000 0x0 0x10000>,    /* MC2 */
>> +                  <0x0 0x02c50000 0x0 0x10000>;    /* MC3 */
>> +            reg-names = "mc-sid", "mc-broadcast", "mc0", "mc1", "mc2", "mc3";
> 
> The "mc-" prefix feels redundant to me, I'd name the regs like this:
> 
>    "sid", "broadcast", "ch0", "ch1", "ch2", "ch3"
> 
> 
> You should also add validation of the regs/reg-names to the yaml based
> on SoC version. I.e. it's not enough to only bump the maxItems.

Okay, I will add validation of reg-names as following:

   reg-names:
     minItems: 0
     maxItems: 6
     items:
       - const: sid
       - const: broadcast
       - const: ch0
       - const: ch1
       - const: ch2
       - const: ch3


We will have to keep minItems to 0 in order to make it compatible with
old DT, right?