linux-kernel - Re: [PATCH 1/2] dt-bindings: mfd: Add Spreadtrum SC27xx PMIC documentation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMz4ku+=Pgi1x8LTpAM8FgJ2mn5+z-ad9uA89i7j9WopcddaUQ@mail.gmail.com>
Date:   Fri, 13 Oct 2017 21:28:09 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Baolin Wang <baolin.wang@...eadtrum.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 1/2] dt-bindings: mfd: Add Spreadtrum SC27xx PMIC documentation

On 13 October 2017 at 17:55, Lee Jones <lee.jones@...aro.org> wrote:
> On Fri, 13 Oct 2017, Baolin Wang wrote:
>> On 13 October 2017 at 17:07, Lee Jones <lee.jones@...aro.org> wrote:
>> > On Wed, 11 Oct 2017, Baolin Wang wrote:
>> >
>> >> This patch adds the binding documentation for Spreadtrum SC27xx series
>> >> PMIC device.
>> >>
>> >> Signed-off-by: Baolin Wang <baolin.wang@...eadtrum.com>
>> >> ---
>> >>  .../devicetree/bindings/mfd/sprd,sc27xx-pmic.txt   |   23 ++++++++++++++++++++
>> >>  1 file changed, 23 insertions(+)
>> >>  create mode 100644 Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt
>> >>
>> >> diff --git a/Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt b/Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt
>> >> new file mode 100644
>> >> index 0000000..333c818
>> >> --- /dev/null
>> >> +++ b/Documentation/devicetree/bindings/mfd/sprd,sc27xx-pmic.txt
>> >> @@ -0,0 +1,23 @@
>> >> +Spreadtrum SC27xx Power Management Integrated Circuit (PMIC)
>> >
>> > More info please.
>> >
>> > What does the ship do and what other devices are available.
>>
>> OK. I will add more information in next version.
>>
>> >
>> >> +Required properties:
>> >> +- compatible: Should be "sprd,sc2731".
>> >> +- reg: SPI chip select.
>> >
>> > Really?  Not an address?
>>
>> Yes, it should be device address.
>>
>> >
>> > What is the range?
>> >
>> >> +- spi-max-frequency: Typically set to 26000000.
>> >> +- interrupts: The interrupt line the device is connected to.
>> >> +- interrupt-controller: Marks the device node as an interrupt controller.
>> >> +- #interrupt-cells: The number of cells to describe an PMIC IRQ, should be 2.
>> >
>> > What if it's not 2?  Will it still work?
>>
>> Must be 2, if not it can not work well. Will update in next version.
>>
>> >
>> >> +- #address-cells: Child device offset number of cells, should be 1.
>> >
>> > Same.
>>
>> OK.
>>
>> >
>> >> +- #size-cells: Child device size number of cells, should be 0.
>> >
>> > Same.
>>
>> OK.
>>
>> >
>> >> +
>> >> +Example:
>> >> +pmic: pmic@0 {
>> >
>> > What other nodes are you referencing this one from?
>>
>> This node should be under our ADI/SPI master device node, as one SPI
>> device. I will add the SPI master node in next version. Very
>> appreciated for your comments.
>
> Sorry, what I'm getting at is; is the 'pmic:' label really required?

Ah, sorry for misunderstanding your point. You are right, I will
remove the redundant 'pmic' label in next version. Thanks.

-- 
Baolin.wang
Best Regards