linux-kernel - Re: [PATCH 00/16] STM32 configure UART nodes for DMA

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Date:   Mon, 14 Feb 2022 11:02:22 +0100
From:   Alexandre TORGUE <alexandre.torgue@...s.st.com>
To:     Erwan Le Ray <erwan.leray@...s.st.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Marek Vasut <marex@...x.de>,
        Marcin Sloniewski <marcin.sloniewski@...il.com>,
        Ahmad Fatoum <a.fatoum@...gutronix.de>,
        Jagan Teki <jagan@...rulasolutions.com>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 00/16] STM32 configure UART nodes for DMA

On 2/3/22 18:10, Erwan Le Ray wrote:
> Add DMA configuration to UART nodes in stm32mp15x (SOC level) and
> remove it at board level to keep current PIO behavior when needed.
> For stm32-ed1 and stm32-dkx boards, UART4 (console) and UART7
> (no HW flow control pin available) are kept in PIO mode, while USART3
> is now configured in DMA mode.
> UART4 (console UART) has to be kept in irq mode, as DMA support for
> console has been removed from the driver by commit e359b4411c28
> ("serial: stm32: fix threaded interrupt handling").
> 
> For other stm32mp15x-based boards, current configuration is kept for
> all UART instances.
> 
> Erwan Le Ray (16):
>    ARM: dts: stm32: add DMA configuration to UART nodes on stm32mp151
>    ARM: dts: stm32: keep uart4 behavior on stm32mp157c-ed1
>    ARM: dts: stm32: keep uart4 and uart7 behavior on stm32mp15xx-dkx
>    ARM: dts: stm32: keep uart4 behavior on icore-stm32mp1-ctouch2
>    ARM: dts: stm32: keep uart4 behavior on icore-stm32mp1-edimm2.2
>    ARM: dts: stm32: keep uart4 behavior on stm32mp157a-iot-box
>    ARM: dts: stm32: keep uart nodes behavior on stm32mp1-microdev2.0-of7
>    ARM: dts: stm32: keep uart nodes behavior on stm32mp1-microdev2.0
>    ARM: dts: stm32: keep uart nodes behavior on stm32mp157a-stinger96
>    ARM: dts: stm32: keep uart4 behavior on stm32mp157c-lxa-mc1
>    ARM: dts: stm32: keep uart4 behavior on stm32mp157c-odyssey
>    ARM: dts: stm32: keep uart nodes behavior on stm32mp15xx-dhcom-drc02
>    ARM: dts: stm32: keep uart nodes behavior on stm32mp15xx-dhcom-pdk2
>    ARM: dts: stm32: keep uart nodes behavior on stm32mp15xx-dhcom-picoitx
>    ARM: dts: stm32: keep uart4 behavior on stm32mp15xx-dhcom-som
>    ARM: dts: stm32: keep uart nodes behavior on
>      stm32mp15xx-dhcor-avenger96
> 
>   arch/arm/boot/dts/stm32mp151.dtsi             | 21 +++++++++++++++++++
>   .../stm32mp157a-icore-stm32mp1-ctouch2.dts    |  2 ++
>   .../stm32mp157a-icore-stm32mp1-edimm2.2.dts   |  2 ++
>   arch/arm/boot/dts/stm32mp157a-iot-box.dts     |  2 ++
>   ...157a-microgea-stm32mp1-microdev2.0-of7.dts |  4 ++++
>   ...32mp157a-microgea-stm32mp1-microdev2.0.dts |  4 ++++
>   arch/arm/boot/dts/stm32mp157a-stinger96.dtsi  |  6 ++++++
>   arch/arm/boot/dts/stm32mp157c-ed1.dts         |  2 ++
>   arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts     |  2 ++
>   arch/arm/boot/dts/stm32mp157c-odyssey.dts     |  2 ++
>   .../arm/boot/dts/stm32mp15xx-dhcom-drc02.dtsi |  4 ++++
>   arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi |  4 ++++
>   .../boot/dts/stm32mp15xx-dhcom-picoitx.dtsi   |  4 ++++
>   arch/arm/boot/dts/stm32mp15xx-dhcom-som.dtsi  |  2 ++
>   .../boot/dts/stm32mp15xx-dhcor-avenger96.dtsi |  6 ++++++
>   arch/arm/boot/dts/stm32mp15xx-dkx.dtsi        |  4 ++++
>   16 files changed, 71 insertions(+)
> 
Series applied on stm32-next.

Thanks
Alex