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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 v2 1/2] dt-bindings: i2c: mv64xxx: add reset-gpios property
Date: Mon, 16 Oct 2023 15:35:03 +1300
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| Series |
i2c: mv64xxx: reset-gpios
|
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Commit Message
Chris Packham
Oct. 16, 2023, 2:35 a.m. UTC
Add reset-gpios and reset-delay-us properties to the marvell,mv64xxx-i2c
binding. These can be used to describe hardware where a common reset
GPIO is connected to all downstream devices on and I2C bus. This reset
will be released before the downstream devices on the bus are probed.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
Notes:
Changes in v2:
- Update commit message
- Add reset-delay-us property
.../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 6 ++++++
1 file changed, 6 insertions(+)
Comments
On 16/10/2023 04:35, Chris Packham wrote: > Add reset-gpios and reset-delay-us properties to the marvell,mv64xxx-i2c > binding. These can be used to describe hardware where a common reset > GPIO is connected to all downstream devices on and I2C bus. This reset > will be released before the downstream devices on the bus are probed. > > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> > --- > > Notes: > Changes in v2: > - Update commit message > - Add reset-delay-us property > > .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > index 461d1c9ee3f7..7223797b0572 100644 > --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > @@ -70,6 +70,12 @@ properties: > resets: > maxItems: 1 > > + reset-gpios: > + maxItems: 1 > + > + reset-delay-us: > + description: Delay in us to wait after reset gpio de-assertion. Add: default: XXXX Best regards, Krzysztof
On Mon, Oct 16, 2023 at 03:35:03PM +1300, Chris Packham wrote: > Add reset-gpios and reset-delay-us properties to the marvell,mv64xxx-i2c > binding. These can be used to describe hardware where a common reset > GPIO is connected to all downstream devices on and I2C bus. This reset > will be released before the downstream devices on the bus are probed. > > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> > --- > > Notes: > Changes in v2: > - Update commit message > - Add reset-delay-us property > > .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > index 461d1c9ee3f7..7223797b0572 100644 > --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > @@ -70,6 +70,12 @@ properties: > resets: > maxItems: 1 > > + reset-gpios: > + maxItems: 1 It would be worth saying this is common for all downstream devices on the I2C bus here. > + > + reset-delay-us: > + description: Delay in us to wait after reset gpio de-assertion. > + > dmas: > items: > - description: RX DMA Channel > -- > 2.42.0 >
diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml index 461d1c9ee3f7..7223797b0572 100644 --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml @@ -70,6 +70,12 @@ properties: resets: maxItems: 1 + reset-gpios: + maxItems: 1 + + reset-delay-us: + description: Delay in us to wait after reset gpio de-assertion. + dmas: items: - description: RX DMA Channel