linux-kernel - Re: [PATCH v3 0/9] i2c: stm32f7: enhancements and support for stm32mp25

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Message-ID: <a78007e1-ebc9-433d-9685-7e79dfa37b96@foss.st.com>
Date: Thu, 25 Apr 2024 10:00:05 +0200
From: Alexandre TORGUE <alexandre.torgue@...s.st.com>
To: Alain Volmat <alain.volmat@...s.st.com>,
        Andi Shyti
	<andi.shyti@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Pierre-Yves MORDRET <pierre-yves.mordret@...s.st.com>
CC: Conor Dooley <conor@...nel.org>, <linux-i2c@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/9] i2c: stm32f7: enhancements and support for
 stm32mp25

Hi Alain

On 12/15/23 18:06, Alain Volmat wrote:
> This series first perform enhancements in the way interrupt are handled
> and cleanup in messages.
> Then it adds support for the stm32mp25 which differs in that
> it only has a single irq line for both event/error and has a
> different handling of the FastModePlus.
> Support is then enabled within the stm32mp25 related device-trees.
> 
> Changelog:
> v3: - addition of 2 commits dealing with readl_relaxed(I2C_ISR) in
>        isr handler and a second one to use dev_err_probe during probe
>      - correction of SOB in commit
> 
> v2: - correct st,stm32-i2c.yaml.  Use if then else scheme to indicate
>        number of interrupts / interrupt-names depending on the
>        compatible while keeping the description within the common part
> 
>      - correct 2 maybe-uninitialized warnings
>            * ret in stm32f7_i2c_write_fm_plus_bits
>            * irq_error in stm32f7_i2c_probe, move the platform_get_irq
>              within the same if block as devm_request_threaded_irq
> 
> Alain Volmat (9):
>    i2c: stm32f7: use dev_err_probe upon calls of devm_request_irq
>    i2c: stm32f7: perform most of irq job in threaded handler
>    i2c: stm32f7: simplify status messages in case of errors
>    dt-bindings: i2c: document st,stm32mp25-i2c compatible
>    i2c: stm32f7: perform I2C_ISR read once at beginning of event isr
>    i2c: stm32f7: add support for stm32mp25 soc
>    arm64: dts: st: add all 8 i2c nodes on stm32mp251
>    arm64: dts: st: add i2c2/i2c8 pins for stm32mp25
>    arm64: dts: st: add i2c2 / i2c8 properties on stm32mp257f-ev1
> 
>   .../devicetree/bindings/i2c/st,stm32-i2c.yaml |  28 ++
>   arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi |  36 ++
>   arch/arm64/boot/dts/st/stm32mp251.dtsi        |  96 +++++
>   arch/arm64/boot/dts/st/stm32mp257f-ev1.dts    |  20 +
>   drivers/i2c/busses/i2c-stm32f7.c              | 342 +++++++++---------
>   5 files changed, 358 insertions(+), 164 deletions(-)
> 

DT patches applied on stm32-next. Not that I added acces-controller 
bindings for all I2C nodes.

Thanks!
Alex