linux-kernel - Re: [PATCH v4 5/9] drm/bridge: add a driver for T-Head TH1520 HDMI controller

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Message-ID: <0eba66980024d001d4ff6d0aed6f2f3e356abf3a.camel@iscas.ac.cn>
Date: Fri, 26 Dec 2025 21:27:53 +0800
From: Icenowy Zheng <zhengxingda@...as.ac.cn>
To: Andy Yan <andyshrk@....com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
 <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie
 <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Drew Fustini <fustini@...nel.org>, Guo Ren
 <guoren@...nel.org>, Fu Wei <wefu@...hat.com>, Philipp Zabel
 <p.zabel@...gutronix.de>, Heiko Stuebner <heiko@...ech.de>, 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>, Michal Wilczynski
 <m.wilczynski@...sung.com>, devicetree@...r.kernel.org, Yao Zi
 <ziyao@...root.org>,  linux-kernel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, Han Gao <rabenda.cn@...il.com>,
 linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v4 5/9] drm/bridge: add a driver for T-Head TH1520 HDMI
 controller

在 2025-12-25星期四的 19:07 +0800，Andy Yan写道：
> 
> 
> Hello Icenowy:
> 
> At 2025-12-25 00:12:01, "Icenowy Zheng" <zhengxingda@...as.ac.cn>
> wrote:
> > From: Icenowy Zheng <uwu@...nowy.me>
> > 
> > T-Head TH1520 SoC contains a Synopsys DesignWare HDMI controller
> > (paired
> > with DesignWare HDMI TX PHY Gen2) that takes the "DP" output from
> > the
> > display controller.
> > 
> > Add a driver for this controller utilizing the common DesignWare
> > HDMI
> > code in the kernel.
> > 
> > Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
> > Signed-off-by: Icenowy Zheng <zhengxingda@...as.ac.cn>
> > ---
> > No changes in v3, v4.
> > 
> > Changes in v2:
> > - Created a new function to set PHY parameters and refactored the
> >  control flow of the configure_phy callback.
> > 
> > MAINTAINERS                             |   1 +
> > drivers/gpu/drm/bridge/Kconfig          |  10 ++
> > drivers/gpu/drm/bridge/Makefile         |   1 +
> > drivers/gpu/drm/bridge/th1520-dw-hdmi.c | 173
> > ++++++++++++++++++++++++
> > 4 files changed, 185 insertions(+)
> > create mode 100644 drivers/gpu/drm/bridge/th1520-dw-hdmi.c
> 
> 
> As this is a Synopsys DesignWare based IP, maybe it's better to put
> it under   "drivers/gpu/drm/bridge/synopsys/"
> Or just create a dir for thead, I think there will come other display
> related drivers for thead in the future.

It's not proper to place vendor glues to synopsys/ .

As for T-Head, they stopped their embedded SoC business (sold to
another company) and now they only makes data-center chips, there
should be no T-Head display drivers in the future.

> 
> 
=========== 8< ============