Re: [PATCH dt-schema] schemas: i2c: add optional GPIO binding for SMBALERT# line
Rob Herring <[email protected]>
| Newsgroups | org.kernel.vger.devicetree-spec,org.kernel.vger.linux-i2c,org.kernel.vger.linux-renesas-soc |
|---|---|
| Message-ID | <CAL_JsqLui9=K_LdAoEAibxRo30_2ahdGXhCW50ow8rcqCp6jZA@mail.gmail.com> |
On Mon, Sep 9, 2024 at 5:58 AM Wolfram Sang <[email protected]> wrote: > > Most I2C controllers do not have a dedicated pin for SMBus Alerts. Allow > them to define a GPIO as a side-channel. Most GPIOs are also interrupts, so shouldn't the existing binding be sufficient? The exception is if the GPIO needs to be polled. > > Signed-off-by: Wolfram Sang <[email protected]> > --- > dtschema/schemas/i2c/i2c-controller.yaml | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/dtschema/schemas/i2c/i2c-controller.yaml b/dtschema/schemas/i2c/i2c-controller.yaml > index 97d0aaa..487e669 100644 > --- a/dtschema/schemas/i2c/i2c-controller.yaml > +++ b/dtschema/schemas/i2c/i2c-controller.yaml > @@ -135,6 +135,11 @@ properties: > use this information to detect a stalled bus more reliably, for example. > Can not be combined with 'multi-master'. > > + smbalert-gpios: > + maxItems: 1 > + description: > + Specifies the GPIO used for the SMBALERT# line. Optional. > + > smbus: > type: boolean > description: > -- > 2.43.0 > >