Re: [EXT] [PATCH 2/2] drm/bridge: waveshare-dsi: Add support for 1..4 DSI data lanes

[Joseph Guo]

On 1/13/2026 7:47 AM, Marek Vasut wrote:
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> Parse the data lane count out of DT. Limit the supported data lanes
> to 1..4 which is the maximum available DSI pairs on the connector of
> any known panels which may use this bridge. Internally, this bridge
> is an ChipOne ICN6211 which loads its register configuration from a
> dedicated storage and its I2C does not seem to be accessible. The
> ICN6211 also supports up to 4 DSI lanes, so this is a hard limit.
> 
> To avoid any breakage on old DTs where the parsing of data lanes from
> DT may fail, fall back to the original hard-coded value of 2 lanes and
> warn user.
> 
> The lane configuration is preconfigured in the bridge for each of the
> WaveShare panels. The 13.3" DSI panel works with 4-lane configuration,
> others seem to use 2-lane configuration. This is a hardware property,
> so the actual count should come from DT.
> 
>
Hi Marek,

I don't have 4 lanes waveshare panel on my hands. Have you tested with the 4-lane panel already?

Regards,
Joseph