Re: [PATCH v1 4/6] drm/tegra: Add support for 8-bit CPU interface

[Thierry Reding]

On Wed, Sep 30, 2026 at 10:05:33AM +0300, Svyatoslav Ryhel wrote:
> The display controller in Tegra20/30 SoCs features an 8-bit SPI interface
> that closely resembles the MIPI DBI Type B protocol and is referred to as
> '8-bit CPU'. Each display controller provides two such interfaces, which
> can be used to send MIPI DCS commands to initialize and control the panel
> while image data is transmitted via 16/18/24-line RGB.
> 
> Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
> ---
>  drivers/gpu/drm/tegra/Kconfig      |   7 +
>  drivers/gpu/drm/tegra/Makefile     |   1 +
>  drivers/gpu/drm/tegra/cpu-bridge.c | 427 +++++++++++++++++++++++++++++
>  3 files changed, 435 insertions(+)
>  create mode 100644 drivers/gpu/drm/tegra/cpu-bridge.c

This doesn't need to be a separate driver. It should all live in dc.c.
Or maybe even rgb.c, since it uses pretty much the same pins and is
quite similar to it.

Thierry

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