linux-kernel - Re: [PATCH v3 0/9] Add STM32 LPTimer: PWM, trigger and counter

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Message-ID: <20170821072433.fvtezmsnrkuhnx6w@dell>
Date:   Mon, 21 Aug 2017 08:24:33 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Fabrice Gasnier <fabrice.gasnier@...com>
Cc:     benjamin.gaignard@...aro.org, jic23@...nel.org,
        thierry.reding@...il.com, robh+dt@...nel.org, mark.rutland@....com,
        alexandre.torgue@...com, mcoquelin.stm32@...il.com,
        benjamin.gaignard@...com, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org
Subject: Re: [PATCH v3 0/9] Add STM32 LPTimer: PWM, trigger and counter

On Fri, 07 Jul 2017, Fabrice Gasnier wrote:

> This series adds support for Low-Power Timer that can be found on
> some STM32 devices.
> 
> STM32 LPTimer (LPTIM) is a 16-bit timer that provides several
> functionalities. This series adds support for following features:
> - PWM output (with programmable prescaler, configurable polarity)
> - Trigger source for STM32 ADC or DAC (LPTIM_OUT)
> - Quadrature encoder and counter
> 
> The MFD core is used to manage common resources (clock, register map)
> and to detect encoder feature. "stm32_lptimer" structure is provided
> to its sub-nodes to share those information:
> - PWM driver is used to implement single PWM channel
> - IIO trigger
> - IIO quadrature encoder and counter
> 
> ---
> Changes in v3:
> - I sent this v3 with various changes, but still need to discuss ABI
>   for counter driver (no change on this in v3).
> - Remarks for Rob on dt-bindings
> - Add validate_device in Trigger driver
> - Update PWM driver after Thierry's comments
> - Additional patch for STM32 ADC trigger

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Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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