linux-kernel - RE: [PATCH 0/3] pinctrl: scmi: support i.MX95 OEM extensions with fsl,pins property

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Date: Mon, 27 May 2024 08:36:27 +0000
From: Peng Fan <peng.fan@....com>
To: "Peng Fan (OSS)" <peng.fan@....nxp.com>, Sudeep Holla
	<sudeep.holla@....com>, Cristian Marussi <cristian.marussi@....com>, Rob
 Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor
 Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
	<s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Linus Walleij <linus.walleij@...aro.org>,
	Aisheng Dong <aisheng.dong@....com>, Jacky Bai <ping.bai@....com>
CC: "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: RE: [PATCH 0/3] pinctrl: scmi: support i.MX95 OEM extensions with
 fsl,pins property

Hi Linus, Sudeep, Cristian,

> Subject: [PATCH 0/3] pinctrl: scmi: support i.MX95 OEM extensions with
> fsl,pins property

Sorry if this is an early ping to you. Just wanna this not blocking i.MX95
upstream support.

Are you ok with this patchset? 

Thanks,
Peng.

> 
> All:
>  There was a v6 that use generic properties, but at a late stage, NXP  internals
> decides to switch to fsl,pins property to align with other  i.MXs. Since new
> properties, drivers rewrite, I start this patchset  from v1 with a new patch title.
> A RFC patch for binding was posted,  since Rob said he is fine, so post this
> patchset out.
> 
>  Whether v6 or this patchset, patch 2 is a must and was not changed from  v6.
> 
>  The pinctrl stuff has been pending for quite sometime, I would be
> apprecaited if any quick comments.
> 
> v6:
>  https://lore.kernel.org/all/20240513-pinctrl-scmi-oem-v3-v6-0-
> 904975c99cc4@....com/
> RFC:
>  https://lore.kernel.org/all/20240520194942.GA1374705-robh@kernel.org/
> 
> Thanks,
> Peng.
> 
> ARM SCMI v3.2 Table 24 Pin Configuration Type and Enumerations:
> '192 -255 OEM specific units'.
> 
> i.MX95 System Manager FW supports SCMI PINCTRL protocol, but it has zero
> functions, groups. So pinctrl-scmi.c could not be reused for i.MX95.
> Because nxp,pin-func, nxp,pin-conf properties are rejected by dt maintainers,
> so use 'fsl,pins' which requires a new driver pinctrl-imx-scmi.c
> 
> The node will be as below:
> pinctrl_usdhc1: usdhc1grp {
> 	fsl,pins = <
> 		IMX95_PAD_SD1_CLK__USDHC1_CLK
> 	0x158e
> 		IMX95_PAD_SD1_CMD__USDHC1_CMD
> 	0x138e
> 		IMX95_PAD_SD1_DATA0__USDHC1_DATA0
> 	0x138e
> 		IMX95_PAD_SD1_DATA1__USDHC1_DATA1
> 	0x138e
> 		IMX95_PAD_SD1_DATA2__USDHC1_DATA2
> 	0x138e
> 		IMX95_PAD_SD1_DATA3__USDHC1_DATA3
> 	0x138e
> 		IMX95_PAD_SD1_DATA4__USDHC1_DATA4
> 	0x138e
> 		IMX95_PAD_SD1_DATA5__USDHC1_DATA5
> 	0x138e
> 		IMX95_PAD_SD1_DATA6__USDHC1_DATA6
> 	0x138e
> 		IMX95_PAD_SD1_DATA7__USDHC1_DATA7
> 	0x138e
> 		IMX95_PAD_SD1_STROBE__USDHC1_STROBE
> 	0x158e
> 	>;
> };
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
> Peng Fan (3):
>       dt-bindings: firmware: arm,scmi: Add properties for i.MX95 Pinctrl OEM
> extensions
>       pinctrl: scmi: add blocklist
>       pinctrl: imx: support SCMI pinctrl protocol for i.MX95
> 
>  .../devicetree/bindings/firmware/arm,scmi.yaml     |   4 +-
>  .../bindings/firmware/nxp,imx95-scmi-pinctrl.yaml  |  53 +++
>  drivers/pinctrl/freescale/Kconfig                  |   9 +
>  drivers/pinctrl/freescale/Makefile                 |   1 +
>  drivers/pinctrl/freescale/pinctrl-imx-scmi.c       | 357
> +++++++++++++++++++++
>  drivers/pinctrl/pinctrl-scmi.c                     |   9 +
>  6 files changed, 432 insertions(+), 1 deletion(-)
> ---
> base-commit: 632483ea8004edfadd035de36e1ab2c7c4f53158
> change-id: 20240521-pinctrl-scmi-imx95-867bea9595cf
> 
> Best regards,
> --
> Peng Fan <peng.fan@....com>