linux-kernel - Re: [PATCH v3 02/16] dt-bindings: display: sprd: use more descriptive clock names

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Message-ID: <CAF12kFtpXdw7UyFvdFOZ+kzfYrRLLOt4Cpeg54TC3rHMwefz6Q@mail.gmail.com>
Date: Wed, 6 Aug 2025 16:01:57 +0800
From: Cixi Geng <gengcixi@...il.com>
To: "Rob Herring (Arm)" <robh@...nel.org>
Cc: Otto Pflüger <otto.pflueger@...cue.de>, 
	Orson Zhai <orsonzhai@...il.com>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Chunyan Zhang <zhang.lyra@...il.com>, Kevin Tang <kevin3.tang@...il.com>, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	Baolin Wang <baolin.wang@...ux.alibaba.com>, Simona Vetter <simona@...ll.ch>, 
	linux-kernel@...r.kernel.org, Thomas Zimmermann <tzimmermann@...e.de>, 
	Conor Dooley <conor+dt@...nel.org>, Liviu Dudau <Liviu.Dudau@....com>, 
	David Airlie <airlied@...il.com>, Russell King <rmk+kernel@....linux.org.uk>, 
	Kevin Tang <kevin.tang@...soc.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Eric Anholt <eric@...olt.net>
Subject: Re: [PATCH v3 02/16] dt-bindings: display: sprd: use more descriptive
 clock names

Rob Herring (Arm) <robh@...nel.org> 于2025年8月4日周一 00:54写道：
>
>
> On Thu, 31 Jul 2025 17:51:15 +0200, Otto Pflüger wrote:
> > Introduce new clock names that actually describe what the clock input is
> > used for instead of referring to a specific clock source.
> >
> > The new clock input names are based on information from clock drivers
> > such as drivers/clk/sprd/ums512-clk.c. The 128M clock appears to be
> > CLK_DISPC0_DPI, the clock used for the DPI output from the DPU, while
> > the 384M clock is CLK_DISPC0, the actual DPU core clock. The DSI
> > controller's 96M clock is most likely CLK_DSI_APB, the APB clock used
> > for accessing its control registers.
> >
> > Since it seems possible to configure different frequencies for these
> > clocks, the old bindings do not even accurately describe the hardware.
> > Deprecate the old clock names.
> >
> > Signed-off-by: Otto Pflüger <otto.pflueger@...cue.de>
> > ---
> >  .../bindings/display/sprd/sprd,sharkl3-dpu.yaml         | 17 +++++++++++------
> >  .../bindings/display/sprd/sprd,sharkl3-dsi-host.yaml    | 11 ++++++++---
> >  2 files changed, 19 insertions(+), 9 deletions(-)
> >
>
> Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
>
>
Reviewed-by: Cixi Geng <cixi.geng@...ux.dev>