linux-kernel - Re: [PATCH v10 0/4] firmware: arm_scmi: Add SCMI v3.2 pincontrol protocol basic support

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Message-ID: <2c608b57-fe0b-40dd-a1f8-8f0808605ae3@moroto.mountain>
Date: Wed, 17 Apr 2024 15:42:11 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Peng Fan <peng.fan@....com>
Cc: "Peng Fan (OSS)" <peng.fan@....nxp.com>,
	Cristian Marussi <cristian.marussi@....com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Sudeep Holla <sudeep.holla@....com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, Dhruva Gole <d-gole@...com>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	Oleksii Moisieiev <oleksii_moisieiev@...m.com>
Subject: Re: [PATCH v10 0/4] firmware: arm_scmi: Add SCMI v3.2 pincontrol
 protocol basic support

On Wed, Apr 17, 2024 at 12:15:57PM +0000, Peng Fan wrote:
> Hi Dan,
> 
> > Subject: Re: [PATCH v10 0/4] firmware: arm_scmi: Add SCMI v3.2 pincontrol
> > protocol basic support
> >
> > I'm trying to re-base AKASHI Takahiro's gpio driver on top of your scmi pinctrl
> > driver.
> > https://lore.ke/
> > rnel.org%2Fall%2F20231005025843.508689-1-
> > takahiro.akashi%40linaro.org%2F&data=05%7C02%7Cpeng.fan%40nxp.com%
> > 7C342dd6eb0463456d0d6608dc5e41de1c%7C686ea1d3bc2b4c6fa92cd99c5
> > c301635%7C0%7C0%7C638488884186606528%7CUnknown%7CTWFpbGZs
> > b3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn
> > 0%3D%7C0%7C%7C%7C&sdata=DMJZ2uwuJigkEnEcY7JdBw6DMPjHxcUvvh7
> > 2fsaep50%3D&reserved=0
> > I need to do something like this below to save the gpio information.
> >
> > So now, great, I have the information but I'm not sure how to export it from
> > the scmi pinctrl driver to the gpio driver...  (This is a probably a stupid
> > question but I am real newbie with regards to gpio).
> >
> > The other thing is that the SCMI spec says:
> >
> >     4.11.2.7
> >     PINCTRL_SETTINGS_GET
> >
> >     This command can be used by an agent to get the pin or group
> >     configuration, and the function selected to be enabled. It can also
> >     be used to read the value of a pin when it is set to GPIO mode.
> >
> > What does that mean?  Is that right, or is it something left over from a
> > previous revision of the spec.
> >
> > regards,
> > dan carpenter
> >
> > diff --git a/drivers/firmware/arm_scmi/pinctrl.c
> > b/drivers/firmware/arm_scmi/pinctrl.c
> 
> Just a short question, you will make this a standalone
> patch part of your gpio pinctrl patchset, right?
> 
> Or you wanna include this change in my v11 patch?
> 
> I hope v11 + imx oem patches could land in 6.10,
> so I would not expect big changes to v11.

Yeah.  Let's get your patches merged.  I don't think there is anything
in mine which conflict with yours.  It's just addon.

regards,
dan carpenter