linux-kernel - Re: [PATCH v3 8/9] dt-bindings: media: nxp,imx8mq-vpu: Update bindings

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Message-ID: <25f30110-d655-2d77-d3b7-30c1c61f6965@collabora.com>
Date:   Tue, 23 Feb 2021 09:04:50 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     Rob Herring <robh@...nel.org>
Cc:     ezequiel@...labora.com, p.zabel@...gutronix.de, mchehab@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, gregkh@...uxfoundation.org,
        mripard@...nel.org, paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...l.net, peng.fan@....com,
        hverkuil-cisco@...all.nl, dan.carpenter@...cle.com,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH v3 8/9] dt-bindings: media: nxp,imx8mq-vpu: Update
 bindings


Le 23/02/2021 à 01:34, Rob Herring a écrit :
> On Mon, Feb 22, 2021 at 01:24:05PM +0100, Benjamin Gaignard wrote:
>> The current bindings seem to make the assumption that the
>> two VPUs hardware blocks (G1 and G2) are only one set of
>> registers.
>> After implementing the VPU reset driver and G2 decoder driver
>> it shows that all the VPUs are independent and don't need to
>> know about the registers of the other blocks.
>> Remove from the bindings the need to set all blocks register
>> but keep reg-names property because removing it from the driver
>> may affect other variants.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
>> ---
>> version 2:
>> - be more verbose about why I change the bindings
>> Keep in mind that series comes after: https://www.spinics.net/lists/arm-kernel/msg875766.html
>> without that review and ack it won't work
> Better, but you've still mentioned nothing about breaking compatibility.
> Why is that okay?

Because this reg-names wasn't used before for this variant so remove it won't change anything.

>