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Message-ID: <e9a3eede-f910-4bd9-afd7-1b6117cf6eff@linaro.org>
Date: Fri, 12 Apr 2024 14:52:57 +0100
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Subject: Re: [PATCH v2 00/34] Qualcomm video encoder and decoder driver
To: Hyunjun Ko <zzoon@igalia.com>, quic_dikshita@quicinc.com
Cc: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org,
 linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
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 quic_vgarodia@quicinc.com, stanimir.k.varbanov@gmail.com
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 <20240412071325.810465-1-zzoon@igalia.com>
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From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
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On 12/04/2024 08:13, Hyunjun Ko wrote:
> Hi,
> 
> I'm trying this series of patches for enabling /dev/video0 on sm8650 hdk but failed.
> After modprobing, lsmod says just like the follwoing:
> 
> root@hdk8650:/lib/modules/6.7.0-rc3+# lsmod
> Module                  Size  Used by
> iris                  110592  -2
> v4l2_mem2mem           20480  -2
> videobuf2_memops       12288  -2
> videobuf2_v4l2         20480  -2
> videobuf2_common       45056  -2
> videodev              176128  -2
> 
> 
> This series looks for sm8550 device though, my question is that this series have been tested on the device (sm8650 hdk)? or do you expect this should work on it?
> 

Different SoCs so despite how close they look in version numbers, you'd 
expect at a minimum some clock and/or power-domain churn - even if there 
is a 1:1 mapping in register numbers and offsets.

We wouldn't ordinarily expect to be able to be able to move SoC versions 
so easily - 8550 and 8650 have similar SoC version numbers but, this is 
not necessarily an indicator of silicon IP block version reuse.

---
bod