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

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Message-ID: <d449b567-bd5c-168d-83af-5ba38771f75a@gmail.com>
Date:   Fri, 27 Mar 2020 22:50:10 +0100
From:   saravanan sekar <sravanhome@...il.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     robh+dt@...nel.org, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, sre@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-iio@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 1/5] dt-bindings: mfd: add document bindings for mp2629

Hi Lee,

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@...il.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
>> +title: MP2629 Battery Charger PMIC from Monolithic Power System.
>> +
>> +maintainers:
>> +  - Saravanan Sekar <sravanhome@...il.com>
>> +
>> +description: |
>> +  MP2629 is an PMIC providing battery charging and power supply for smartphones,
> s/an/a/
>
>> +  wireless camera and portable devices. Chip is contrlled over I2C.
> Spell check!
>
>> +  The MFD device handles battery charger controller and ADC IIO device for
>> +  battery, system voltage
> MFD isn't a thing.  We made it up.  Please describe it as it is in the datasheet.
>
>> +properties:
>> +  compatible:
>> +    const: mps,mp2629
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  interrupt-controller: true
>> +
>> +  "#interrupt-cells":
>> +    const: 2
>> +    description:
>> +      The first cell is the IRQ number, the second cell is the trigger type.
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - interrupt-controller
>> +  - "#interrupt-cells"
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/irq.h>
>> +    #include <dt-bindings/input/linux-event-codes.h>
>> +    i2c {
> i2c@...???????

Its a I2C controller node, I don't think address is needed. Mention like 
this my previous other driver patches,

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>;
>> +        };
>> +    };