linux-kernel - Re: [PATCH v3 0/2] gpu/drm: tegra: add DSI support for Tegra20/Tegra30

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Message-ID: <4092608.jE0xQCEvom@senjougahara>
Date: Mon, 26 Jan 2026 10:19:04 +0900
From: Mikko Perttunen <mperttunen@...dia.com>
To: Thierry Reding <thierry.reding@...il.com>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Jonathan Hunter <jonathanh@...dia.com>,
 Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>,
 Svyatoslav Ryhel <clamor95@...il.com>, Svyatoslav Ryhel <clamor95@...il.com>
Cc: dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject:
 Re: [PATCH v3 0/2] gpu/drm: tegra: add DSI support for Tegra20/Tegra30

On Sunday, January 25, 2026 10:13 PM Svyatoslav Ryhel wrote:
> Tegra20/Tegra30 DSI is quite similar to Tegra114+ apart MIPI calibration
> logic and clocks. With a few minor tweaks, existing tegra DSI driver
> should work on Tegra20/Tegra30 devices just fine. Tested on
> Motorola Atrix 4G (T20) and ASUS VivoTab RT TF600T (T30).
> 
> This patchset depends on Tegra20/Tegra30 CSI bringup since both share
> MIPI calibration logic. Ideally these patches should be picked after
> CSI bringup but they will not break anything even if picked before
> CSI patches.
> 
> ---
> Changes in v2:
> - removed all MIPI calibration, it is handled within CSI bringup
> - added per-soc structures into of_match
> - added fix for hang caused by register access with uninited hw
> 
> Changes in v3:
> - switched from version DSI to boolean flags
> - added comment regarding Tegra30 clock configuration
> - commits were picked:
>   "clk: tegra20: reparent dsi clock to pll_d_out0"
>   "ARM: tegra: adjust DSI nodes for Tegra20/Tegra30"
> - commit adapted to recent DSI changes:
>   "gpu/drm: tegra: dsi: move prepare function at the top of encoder
>     enable" > "gpu/drm: tegra: dsi: re-add clear enable register if
>     DSI was powered by bootloader"
> ---
> 
> Svyatoslav Ryhel (2):
>   gpu/drm: tegra: dsi: add support for Tegra20/Tegra30
>   gpu/drm: tegra: dsi: re-add clear enable register if DSI was powered
>     by bootloader
> 
>  drivers/gpu/drm/tegra/drm.c |   2 +
>  drivers/gpu/drm/tegra/dsi.c | 116 ++++++++++++++++++++++++++----------
>  drivers/gpu/drm/tegra/dsi.h |  10 ++++
>  3 files changed, 97 insertions(+), 31 deletions(-)
> 
> 

The subject prefix for both patches should be 'drm/tegra: ...', and for patch 2, the Fixes trailers should not have the separating empty line from Signed-off-by. Otherwise

Reviewed-by: Mikko Perttunen <mperttunen@...dia.com>

Maybe Thierry can fix those while applying?