linux-kernel - Re: [PATCH] component: Support masters with no subcomponents

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Message-ID: <4xywfprr7qkxpncmnhqjc3lrrcjbv46tsmlzz5yxvcr4xr2dnq@w57ni7u2hpvu>
Date: Thu, 18 Apr 2024 02:36:25 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Herman van Hazendonk <github.com@...rie.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] component: Support masters with no subcomponents

On Wed, Apr 17, 2024 at 01:39:16PM +0200, Linus Walleij wrote:
> Hi Herman,
> 
> thanks for your patch!
> 
> Do you actually have this working on real hardware? I never
> submitted this patch because I could not get the hardware
> working.
> 
> I was hoping for smarter people (Dmitry Baryshkov...) to step
> in and help out to actually make it work before submitting
> patches.

I have LVDS working on apq8064, but it requires fixes in the MMCC
driver, in the MDP4 driver and in DTS. I need to clean up them first
before even attempting to send them out. Also a PWM/LPG driver would
help as otherwise the power supply is quick to be overloaded by the
backlight.

Nevertheless, LVDS/LCDC-only MDP4 is a valid usecase, but it has to be
handled in the driver rather than in the core lib.

-- 
With best wishes
Dmitry