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From: Chris Packham <chris.packham@alliedtelesis.co.nz>
To: gregory.clement@bootlin.com, andi.shyti@kernel.org,
robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
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Cc: linux-i2c@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Chris Packham <chris.packham@alliedtelesis.co.nz>
Subject: [PATCH 1/3] dt-bindings: i2c: mv64xxx: update bindings for unstuck
register
Date: Wed, 27 Sep 2023 12:47:59 +1300
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| Series |
i2c: mv64xxx: Support for I2C unstuck
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Commit Message
Chris Packham
Sept. 26, 2023, 11:47 p.m. UTC
Some newer Marvell SoCs support an "unstuck" function for I2C bus
recovery. This is an alternative to the generic GPIO based recovery that
the older SoCs use. The unstuck register falls outside of the usual
address block for the I2C controller so requires an additional cell in
the register property. This is optional and does not need to be
supplied.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
.../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
Comments
On Wed, Sep 27, 2023 at 12:47:59PM +1300, Chris Packham wrote: > Some newer Marvell SoCs support an "unstuck" function for I2C bus > recovery. This is an alternative to the generic GPIO based recovery that > the older SoCs use. The unstuck register falls outside of the usual > address block for the I2C controller so requires an additional cell in > the register property. This is optional and does not need to be > supplied. > > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Acked-by: Conor Dooley <conor.dooley@microchip.com> Thanks, Conor. > --- > .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > index 984fc1ed3ec6..461d1c9ee3f7 100644 > --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > @@ -45,7 +45,10 @@ properties: > auto-detects this and sets it appropriately. > > reg: > - maxItems: 1 > + minItems: 1 > + items: > + - description: I2C controller registers > + - description: I2C unstuck register > > interrupts: > maxItems: 1 > -- > 2.42.0 > >
diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml index 984fc1ed3ec6..461d1c9ee3f7 100644 --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml @@ -45,7 +45,10 @@ properties: auto-detects this and sets it appropriately. reg: - maxItems: 1 + minItems: 1 + items: + - description: I2C controller registers + - description: I2C unstuck register interrupts: maxItems: 1