linux-kernel - [PATCH v3 0/7] i2c: stm32f7: enhancements and support for stm32mp25

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Message-ID: <20231215170223.95549-1-alain.volmat@foss.st.com>
Date: Fri, 15 Dec 2023 18:02:10 +0100
From: Alain Volmat <alain.volmat@...s.st.com>
To: 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>,
        Alexandre
 Torgue <alexandre.torgue@...s.st.com>,
        Pierre-Yves MORDRET
	<pierre-yves.mordret@...s.st.com>,
        Alain Volmat <alain.volmat@...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: [PATCH v3 0/7] i2c: stm32f7: enhancements and support for stm32mp25

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(-)

-- 
2.25.1