linux-kernel - Re: [PATCH v3 0/2] pwm: add driver for T-THEAD TH1520 SoC

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Message-ID: <ZUj8/fhitNf8fRMf@xhacker>
Date:   Mon, 6 Nov 2023 22:49:33 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>
Cc:     linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v3 0/2] pwm: add driver for T-THEAD TH1520 SoC

On Thu, Oct 05, 2023 at 09:05:17PM +0800, Jisheng Zhang wrote:
> T-HEAD SoCs such as the TH1520 contain a PWM controller used to
> control the LCD backlight, fan and so on. Add the PWM driver support
> for it.
> 
> Since the clk part isn't mainlined, so SoC dts(i) changes are not
> included in this series. However, it can be tested by using fixed-clock.
> 
> since v2:
>  - collect Reviewed-by tag
>  - add CTRL_ prefix for THEAD_PWM_CTRL register bit macros
>  - use pm_runtime_resume_and_get() instead of pm_runtime_get_sync() and
>    check its return value.
>  - remove unnecessary casts
>  - call pm_runtime_put_sync() when pwm channel is disabled
>  - use devm_pm_runtime_enable() and then drop .remove()
>  - properly consider if pwm is programmed by bootloader or other
>    pre-linux env.
>  - simplify thead_pwm_runtime_resume() code as Uwe suggested
>  - bool ever_started -> u8 channel_ever_started since we have 6 channels
>  - use 3 for #pwm-cells 
> 
> since v1:
>  - update commit msg and yaml filename to address Conor's comment
>  - use devm_clk_get_enabled() and devm_pwmchip_add()
>  - implement .get_state()
>  - properly handle overflow
>  - introduce thead_pwm_from_chip() inline function
>  - document Limitations
>  - address pm_runtime_get/put pingpong comment
> 
> 
> Jisheng Zhang (2):
>   dt-bindings: pwm: Add T-HEAD PWM controller
>   pwm: add T-HEAD PWM driver

Hi Thierry, Uwe,

Kind ping, is there any chance for this series to be merged for v6.7?

Thanks
> 
>  .../bindings/pwm/thead,th1520-pwm.yaml        |  44 +++
>  drivers/pwm/Kconfig                           |  11 +
>  drivers/pwm/Makefile                          |   1 +
>  drivers/pwm/pwm-thead.c                       | 270 ++++++++++++++++++
>  4 files changed, 326 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/thead,th1520-pwm.yaml
>  create mode 100644 drivers/pwm/pwm-thead.c
> 
> -- 
> 2.40.1
>