linux-kernel - Re: [PATCH 1/3] arm64: dts: ti: k3-am62-main: Fix the reg-range for dma-controller

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Date: Wed, 10 Apr 2024 17:23:37 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: "Kumar, Udit" <u-kumar1@...com>, <nm@...com>, <vigneshr@...com>,
        <bb@...com>, <devicetree@...r.kernel.org>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/3] arm64: dts: ti: k3-am62-main: Fix the reg-range for
 dma-controller

Hello Udit,

On 10/04/24 15:36, Kumar, Udit wrote:
> Thanks for this fix Jayesh
> 
> On 4/5/2024 2:22 PM, Jayesh Choudhary wrote:
>> The TX Channel Realtime Registers region 'tchanrt' is 128KB and Ring
>> Realtime Registers region 'ringrt' is 2MB as shown in memory map in
>> the TRM[0]. So fix ranges for those reg-regions.
> 
> Minor one, but it will be better to say that you are fixing these 
> register ranges for  PKTDMA .
> 
> Something like that

The cover-letter[0] for the series does mention that the changes are for
DMASS0_PKTDMA_RINGRT and DMASS0_PKTDMA_TCHANRT with the current and
correct region size.
It also mentions the section and the Table from where we can check them.
{*** section for Main Memory Map (Table 2-1)}

[0]: https://lore.kernel.org/all/20240405085208.32227-1-j-choudhary@ti.com/

It was same check across all platform so added in cover letter.
But I will add that in each patch.

Thanks,
Jayesh

> 
> For PKTDMA, The TX Channel Realtime Registers region 'tchanrt' ....
> 
> Also, it will help reviewer if you can mention which section in TRM[0], 
> holding memory map .
> 
> If you are doing v2 then please take care of above in commit message.
> 
> rest for whole series
> 
> LGTM
> 
> 
> 
>> [0]: <https://www.ti.com/lit/pdf/spruiv7>
>>
>> Fixes: c37c58fdeb8a ("arm64: dts: ti: k3-am62: Add more peripheral 
>> nodes")
>> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi 
>> b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
>> index e9cffca073ef..e10cc9fc0b10 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
>> @@ -141,8 +141,8 @@ main_pktdma: dma-controller@...c0000 {
>>               compatible = "ti,am64-dmss-pktdma";
>>               reg = <0x00 0x485c0000 0x00 0x100>,
>>                     <0x00 0x4a800000 0x00 0x20000>,
>> -                  <0x00 0x4aa00000 0x00 0x40000>,
>> -                  <0x00 0x4b800000 0x00 0x400000>,
>> +                  <0x00 0x4aa00000 0x00 0x20000>,
>> +                  <0x00 0x4b800000 0x00 0x200000>,
>>                     <0x00 0x485e0000 0x00 0x10000>,
>>                     <0x00 0x484a0000 0x00 0x2000>,
>>                     <0x00 0x484c0000 0x00 0x2000>,