linux-kernel - Re: [PATCH v3 0/6] drm/sun4i: Support LVDS on D1s/T113 combo D-PHY

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Message-ID: <CAGb2v67V01k8zj2r+Dd+JDEsH2LX2Jtx+CP=i8aQfX_JyFtLfg@mail.gmail.com>
Date: Sun, 16 Nov 2025 22:03:18 +0800
From: Chen-Yu Tsai <wens@...e.org>
To: Kuba Szczodrzyński <kuba@...zodrzynski.pl>
Cc: Maxime Ripard <mripard@...nel.org>, Samuel Holland <samuel@...lland.org>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Thomas Zimmermann <tzimmermann@...e.de>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
	linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, parthiban@...umiz.com, paulk@...-base.io
Subject: Re: [PATCH v3 0/6] drm/sun4i: Support LVDS on D1s/T113 combo D-PHY

On Sun, Nov 16, 2025 at 9:46 PM Kuba Szczodrzyński
<kuba@...zodrzynski.pl> wrote:
>
> [replying to v1 to keep the same series on Patchwork]

That is not the right way to do it.

If you reply to an old series, the tooling does not pickup the new version
as a separate series.

ChenYu

> Some Allwinner chips (notably the D1s/T113 and the A100) have a "combo
> MIPI DSI D-PHY" which is required when using single-link LVDS0. The same
> PD0..PD9 pins are used for either DSI or LVDS.
>
> Other than having to use the combo D-PHY, LVDS output is configured in
> the same way as on older chips.
>
> This series enables the sun6i MIPI D-PHY to also work in LVDS mode. It
> is then configured by the LCD TCON, which allows connecting a
> single-link LVDS display panel.
>
> Changes in v2/v3:
> - Applied code formatting changes from review comments
> - Changed "dphy" to "combo-phy"
> - Made the LVDS setup/teardown functions abort early in case of error
>   (adding a proper return value would require changes in several levels
>    of caller functions; perhaps could be done in a separate patch)
> - Added the PHY properties to DT bindings
> - Renamed lvds0_pins to lcd_lvds0_pins
> - Rebased on top of drm/misc/kernel/for-linux-next
> - Hopefully corrected the incomplete patch list of v2, which happened
>   due to an SMTP error
>
> Kuba Szczodrzyński (6):
>   phy: allwinner: phy-sun6i-mipi-dphy: Support LVDS in combo D-PHY
>   drm/sun4i: Support LVDS using MIPI DSI combo D-PHY
>   drm/sun4i: Enable LVDS output on sun20i D1s/T113
>   dt-bindings: display: sun4i: Add D1s/T113 combo D-PHY bindings
>   riscv: dts: allwinner: d1s-t113: Add D-PHY to TCON LCD0
>   riscv: dts: allwinner: d1s-t113: Add LVDS0 pins
>
>  .../display/allwinner,sun4i-a10-tcon.yaml     |  6 ++
>  .../boot/dts/allwinner/sunxi-d1s-t113.dtsi    | 11 +++
>  drivers/gpu/drm/sun4i/sun4i_tcon.c            | 50 +++++++++++++
>  drivers/gpu/drm/sun4i/sun4i_tcon.h            |  6 ++
>  drivers/phy/allwinner/phy-sun6i-mipi-dphy.c   | 70 ++++++++++++++++++-
>  5 files changed, 141 insertions(+), 2 deletions(-)
>
> --
> 2.25.1
>