Re: [PATCH v4 1/5] dt-bindings: mfd: add document bindings for mp2629

Lee Jones
2020-04-08T10:14:14Z

On Tue, 07 Apr 2020, saravanan sekar wrote:

> Hi Lee,
>
> On 30/03/20 8:46 am, Lee Jones wrote:
> > On Fri, 27 Mar 2020, saravanan sekar wrote:
> > > On 27/03/20 9:00 am, Lee Jones wrote:
> > > > On Sun, 22 Mar 2020, Saravanan Sekar wrote:
> > > >
> > > > > Add device tree binding information for mp2629 mfd driver.
> > > > >
> > > > > Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
> > > > > ---
> > > > > .../devicetree/bindings/mfd/mps,mp2629.yaml | 60 +++++++++++++++++++
> > > > > 1 file changed, 60 insertions(+)
> > > > > create mode 100644 Documentation/devicetree/bindings/mfd/mps,mp2629.yaml
> > > > >
> > > > > diff --git a/Documentation/devicetree/bindings/mfd/mps,mp2629.yaml b/Documentation/devicetree/bindings/mfd/mps,mp2629.yaml
> > > > > new file mode 100644
> > > > > index 000000000000..314309ea91ac
> > > > > --- /dev/null
> > > > > +++ b/Documentation/devicetree/bindings/mfd/mps,mp2629.yaml
> > > > > @@ -0,0 +1,60 @@
> > > > > +# SPDX-License-Identifier: GPL-2.0
> > > > > +%YAML 1.2
> > > > > +---
> > > > > +$id: http://devicetree.org/schemas/mfd/mps,mp2629.yaml#
> > > > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > > Are these links supposed to work?
> > > Not really, but as far my understanding needed for dt-bindings check
> > Rob, why are these here if they just result in 404s?
> >
> > > > > +examples:
> > > > > + - |
> > > > > + #include <dt-bindings/interrupt-controller/irq.h>
> > > > > + #include <dt-bindings/input/linux-event-codes.h>
> > > > > + i2c {
> > > > i2c@0x????????
> > > Its a I2C controller node, I don't think address is needed. Mention like
> > > this my previous other driver patches,
> > This doesn't sound right.
> >
> > How do you control/operate the controller?
> >
> > Surely you read/write from/to registers?
>
>
> Indeed, but each SoC will have different address so which address to mention
> here.
> For me it should be like &i2c {}, anyhow I respect maintainers review (I can
> give RPi I2c bus address used for testing)
> and wait for Rob's reply

It's only an example. It doesn't have to match any real H/W.

> > > dt_binding_check is also passed
> > >
> > > > > + #address-cells = <1>;
> > > > > + #size-cells = <0>;
> > > > > +
> > > > > + pmic@4b {
> > > > > + compatible = "mps,mp2629";
> > > > > + reg = <0x4b>;
> > > > > +
> > > > > + interrupt-controller;
> > > > > + interrupt-parent = <&gpio2>;
> > > > > + #interrupt-cells = <2>;
> > > > > + interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
> > > > > + };
> > > > > + };

--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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