linux-kernel - Re: [PATCH v3 0/6] pwm: Update PWM

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Message-ID: <lgjntm2v4qtp3uwccriodxdefdc4vqydzl4dmula4avhws4zfi@xevkgzfuhyhl>
Date: Mon, 26 May 2025 19:22:29 +0200
From: Uwe Kleine-König <ukleinek@...nel.org>
To: Guodong Xu <guodong@...cstar.com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, 
	paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu, alex@...ti.fr, 
	dlan@...too.org, p.zabel@...gutronix.de, drew@...7.com, inochiama@...il.com, 
	geert+renesas@...der.be, heylenay@....org, tglx@...utronix.de, hal.feng@...rfivetech.com, 
	unicorn_wang@...look.com, duje.mihanovic@...le.hr, heikki.krogerus@...ux.intel.com, 
	elder@...cstar.com, linux-pwm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev
Subject: Re: [PATCH v3 0/6] pwm: Update PWM_PXA driver for SpacemiT K1

Hello,

On Tue, Apr 29, 2025 at 04:50:42PM +0800, Guodong Xu wrote:
> This patchset adds support for the SpacemiT K1 SoC in the PWM_PXA driver
> and updates related device tree bindings. The changes enable PWM
> functionality on the K1 platform through driver enhancements,
> configuration updates, and device tree additions.
> 
> Functionality has been verified on the Banana Pi BPI-F3 board using PWM14,
> configured as a pwm-backlight. Per community feedback, the actual
> pwm-backlight node is not included in this patchset but can be found in
> patch 7 of the v1 series, with modification of pwms property to 4-cell
> format to match updated binding (#pwm-cells = <3>) since v3.
> 
> +		pwms = <&pwm14 0 2000 0>;
> 
> This patchset is based on [spacemit/for-next]
>   base: https://github.com/spacemit-com/linux for-next
> 
> Plus the following dependencies:
> 1. Clock controller driver, posted by Heylen Chu (v8), with most of it has
>    been accepted:
> https://lore.kernel.org/all/20250416135406.16284-1-heylenay@4d2.org/
> 2. Reset controller driver, posted by Alex Elder (v5):
> https://lore.kernel.org/all/20250418145401.2603648-1-elder@riscstar.com/

It's not clear to me if I have to look into this github tree and the
listed dependencies. My impression is that it can go in on without these
changes. Maybe it only starts working when these are also applied, but
that shouldn't stop me applying this series, right?

There is a patch in pwm/for-6.16-rc1 (namely commit df08fff8add2 ("pwm:
pxa: Improve using dev_err_probe()")) that conflicts with this series.
I applied patches 1, 2 and 5 on top of my pwm/for-nexxt branch resolving
that conflict and rewording the commit log of patch 5. The result was
pushed to

	https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux.git pwm/pxa-spacemit

. If you confirm that you're happy with my modifications and it's
correct to apply them without the listed dependencies I will add the
patches to my queue for 6.17-rc1.

Best regards
Uwe

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