linux-kernel - [PATCH 0/5] Add support for Allwinner H616 PWM

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Message-ID: <20240531141152.327592-1-kikuchan98@gmail.com>
Date: Fri, 31 May 2024 23:11:32 +0900
From: Hironori KIKUCHI <kikuchan98@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Hironori KIKUCHI <kikuchan98@...il.com>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Aleksandr Shubin <privatesub2@...il.com>,
	Cheo Fusi <fusibrandon13@...il.com>,
	linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev
Subject: [PATCH 0/5] Add support for Allwinner H616 PWM

Add support for the Allwinner H616 PWM, building on top of Aleksandr's
Allwinner D1 PWM driver v9.

Additionally, the 4th and 5th patches implement the proposed method
for delegating the clock source and DIV_M selection to the Device Tree.
While it works well without these patches with the original behavior,
applying them enables fine-grained control of PWM resolution and
prevents non-deterministic behavior dependent on the enabling order.

I have only been able to test on H700 (H616 variant) using an
oscilloscope. I would greatly appreciate it if someone could test
this patch series on the D1 or other models.

Regards,
kikuchan.

Hironori KIKUCHI (5):
  pwm: sun20i: Use devm_pwmchip_alloc() helper
  pwm: sun20i: Add support for Allwinner H616 PWM
  dt-bindings: pwm: sun20i: Add compatible string for Allwinner H616 PWM
  pwm: sun20i: Delegating the clock source and DIV_M to the Device Tree
  dt-bindings: pwm: sun20i: Add options to select a clock source and
    DIV_M

 .../bindings/pwm/allwinner,sun20i-pwm.yaml    |  20 ++
 drivers/pwm/pwm-sun20i.c                      | 326 ++++++++++--------
 2 files changed, 201 insertions(+), 145 deletions(-)

-- 
2.45.1