linux-kernel - Re: [PATCH v2 00/12] drm/bridge: tc358768: Fixes and timings improvements

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Date:   Mon, 21 Aug 2023 22:46:38 +0300
From:   Péter Ujfalusi <peter.ujfalusi@...il.com>
To:     Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Maxim Schwalm <maxim.schwalm@...il.com>,
        Francesco Dolcini <francesco@...cini.it>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Aradhya Bhatia <a-bhatia1@...com>,
        Thierry Reding <treding@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH v2 00/12] drm/bridge: tc358768: Fixes and timings
 improvements



On 16/08/2023 14:25, Tomi Valkeinen wrote:
> This series contains various fixes and cleanups for TC358768. The target
> of this work is to get TC358768 working on Toradex's AM62 based board,
> which has the following display pipeline:
> 
> AM62 DPI -> TC358768 -> LT8912B -> HDMI connector
> 
> The main thing the series does is to improve the DSI HSW, HFP and VSDly
> calculations.

Thanks Tomi for the updates, I cannot test it or verify against the
datasheet, but codewise the series looks nice:

Reviewed-by: Peter Ujfalusi <peter.ujfalusi@...il.com>

> 
>  Tomi
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
> ---
> Changes in v2:
> - Add "drm/tegra: rgb: Parameterize V- and H-sync polarities" so that
>   Tegra can configure the polarities correctly.
> - Add "drm/bridge: tc358768: Default to positive h/v syncs" as we don't
>   (necessarily) have the polarities set in the mode.
> - Drop "drm/bridge: tc358768: Add DRM_BRIDGE_ATTACH_NO_CONNECTOR
>   support" as it's not needed for DRM_BRIDGE_ATTACH_NO_CONNECTOR
>   support.
> - Link to v1: https://lore.kernel.org/r/20230804-tc358768-v1-0-1afd44b7826b@ideasonboard.com
> 
> ---
> Thierry Reding (1):
>       drm/tegra: rgb: Parameterize V- and H-sync polarities
> 
> Tomi Valkeinen (11):
>       drm/bridge: tc358768: Fix use of uninitialized variable
>       drm/bridge: tc358768: Fix bit updates
>       drm/bridge: tc358768: Cleanup PLL calculations
>       drm/bridge: tc358768: Use struct videomode
>       drm/bridge: tc358768: Print logical values, not raw register values
>       drm/bridge: tc358768: Use dev for dbg prints, not priv->dev
>       drm/bridge: tc358768: Rename dsibclk to hsbyteclk
>       drm/bridge: tc358768: Clean up clock period code
>       drm/bridge: tc358768: Fix tc358768_ns_to_cnt()
>       drm/bridge: tc358768: Attempt to fix DSI horizontal timings
>       drm/bridge: tc358768: Default to positive h/v syncs
> 
>  drivers/gpu/drm/bridge/tc358768.c | 381 ++++++++++++++++++++++++++++----------
>  drivers/gpu/drm/tegra/rgb.c       |  16 +-
>  2 files changed, 295 insertions(+), 102 deletions(-)
> ---
> base-commit: 4d49d87b3606369c6e29b9d051892ee1a6fc4e75
> change-id: 20230804-tc358768-1b6949ef2e3d
> 
> Best regards,

-- 
Péter