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From:   Laura Nao <laura.nao@collabora.com>
To:     mathieu.poirier@linaro.org
Cc:     Project_Global_Chrome_Upstream_Group@mediatek.com,
        andersson@kernel.org, angelogioacchino.delregno@collabora.com,
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        kernel@collabora.com, krzysztof.kozlowski+dt@linaro.org,
        laura.nao@collabora.com, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        linux-remoteproc@vger.kernel.org, matthias.bgg@gmail.com,
        robh+dt@kernel.org, tinghan.shen@mediatek.com
Subject: Re: [PATCH v17 00/14] Add support for MT8195 SCP 2nd core
Date:   Tue, 19 Sep 2023 10:45:52 +0200
Message-Id: <20230919084552.260918-1-laura.nao@collabora.com>
In-Reply-To: <ZQj16b1NvkDlij+H@p14s>
References: <ZQj16b1NvkDlij+H@p14s>
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On 9/19/23 03:14, Mathieu Poirier wrote:
> On Mon, Sep 18, 2023 at 12:31:41PM +0200, Laura Nao wrote:
>>> Other than patch 2 and 14, I have applied this set.  The remaining patches will
>>> have to be resent to Matthias.
>>
>>> Thanks,
>>> Mathieu
>>
>> Hello,
>>
>> With patch 2 missing, the SCP is not probed correctly anymore on asurada (MT8192) and kukui (MT8183). The mtk-scp driver relies on the existence of the `cros-ec-rpmsg` node in the dt to determine if the SCP is single or multicore. Without patch 2 the driver wrongly assumes the SCP on MT8192 and MT8183 are multicore, leading to the following errors during initialization:
>>
>> 10696 04:33:59.126671  <3>[   15.465714] platform 10500000.scp:cros-ec: invalid resource (null)
>> 10697 04:33:59.142855  <3>[   15.478560] platform 10500000.scp:cros-ec: Failed to parse and map sram memory
>> 10698 04:33:59.149650  <3>[   15.486121] mtk-scp 10500000.scp: Failed to initialize core 0 rproc
>>
>> The issue was caught by KernelCI, complete logs can be found here:
>> - asurada: https://storage.kernelci.org/next/master/next-20230914/arm64/defconfig+arm64-chromebook+videodec/gcc-10/lab-collabora/baseline-nfs-mt8192-asurada-spherion-r0.html
>> - kukui: https://storage.kernelci.org/next/master/next-20230914/arm64/defconfig+arm64-chromebook+videodec/gcc-10/lab-collabora/baseline-nfs-mt8183-kukui-jacuzzi-juniper-sku16.html
>>
>> Reporting the issue so that patch 2 and 14 can be resent and merged soon.
>>
> 
> Apologies for the trouble here, the error is mine.
> 
> I have applied and pushed patch 02 - please confirm that things are working as
> expected now.  Matthias will need to either ack patch 14 or pick it up himself.
> 
> 

I confirm SCP is probed correctly on MT8192 (spherion) and MT8183 (juniper) on the remoteproc tree (for-next branch) now.
Thank you!