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Date: Tue, 21 May 2024 06:16:34 +0000 From: Peng Fan <peng.fan@....com> To: Frank Li <frank.li@....com>, "Peng Fan (OSS)" <peng.fan@....nxp.com> CC: "linus.walleij@...aro.org" <linus.walleij@...aro.org>, "sudeep.holla@....com" <sudeep.holla@....com>, "cristian.marussi@....com" <cristian.marussi@....com>, "robh@...nel.org" <robh@...nel.org>, "krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>, "shawnguo@...nel.org" <shawnguo@...nel.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>, "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>, "festevam@...il.com" <festevam@...il.com>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>, Aisheng Dong <aisheng.dong@....com> Subject: RE: [RFC] dt-bindings: firmware: arm,scmi: Add properties for i.MX95 Pinctrl OEM extensions > Subject: Re: [RFC] dt-bindings: firmware: arm,scmi: Add properties for i.MX95 > Pinctrl OEM extensions > > On Thu, May 16, 2024 at 03:30:12PM +0800, Peng Fan (OSS) wrote: > > From: Peng Fan <peng.fan@....com> > > > > i.MX95 Pinctrl is managed by System Control Management Interface(SCMI) > > firmware using OEM extensions. No functions, no groups are provided by > > the firmware. So add i.MX95 specific properties. > > > > To keep aligned with current i.MX pinctrl bindings, still use "fsl,pins" > > for i.MX95. > > > > Signed-off-by: Peng Fan <peng.fan@....com> > > --- > > > > V1: > > There is already a v6 version for i.MX95 pinctrl with binding got > > reviewed by Rob, > > https://lore.kernel.org/all/20240513-pinctrl-scmi-oem-v3-v6-1-904975c9 > > 9cc4@....com/ But after NXP internal discussion, to keep "fsl,pins" > > for i.MX95 would make it aligned with current i.MX93/8M/7 bindings > > which people are familiar with, and easy to understand. > > > > Sorry to bring back so late after your reviewing in previous generic > > binding patch. This is not to reject the v6 patch, just wanna to see > > whether you are happy with "fsl,pins" for i.MX95. If people are happy > > to accept, I will post out driver together with this patch in new > > patchset to reject v6. If people are not happy, we could continue with v6. > > > > v6: > > https://lore.kernel.org/all/20240513-pinctrl-scmi-oem-v3-v6-0-904975c9 > > 9cc4@....com/ > > > > Thanks, > > Peng > > > > .../bindings/firmware/arm,scmi.yaml | 4 +- > > .../firmware/nxp,imx95-scmi-pinctrl.yaml | 54 +++++++++++++++++++ > > 2 files changed, 57 insertions(+), 1 deletion(-) create mode 100644 > > Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.yaml > > > > diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml > > b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml > > index 7de2c29606e5..f7a48b1e9f62 100644 > > --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml > > +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml > > @@ -251,7 +251,9 @@ properties: > > type: object > > allOf: > > - $ref: '#/$defs/protocol-node' > > - - $ref: /schemas/pinctrl/pinctrl.yaml > > + - anyOf: > > + - $ref: /schemas/pinctrl/pinctrl.yaml > > + - $ref: /schemas/firmware/nxp,imx95-scmi-pinctrl.yaml > > > > unevaluatedProperties: false > > > > diff --git > > a/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.ya > > ml > > b/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctrl.ya > > ml > > new file mode 100644 > > index 000000000000..3f28c4a171c7 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/firmware/nxp,imx95-scmi-pinctr > > +++ l.yaml > > @@ -0,0 +1,54 @@ > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) # Copyright 2024 > > +NXP %YAML 1.2 > > +--- > > +$id: > > +http://devicetree.org/schemas/firmware/nxp,imx95-scmi-pinctrl.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: i.MX System Control and Management Interface (SCMI) Pinctrl > > +Protocol > > + > > +maintainers: > > + - Peng Fan <peng.fan@....com> > > + > > +allOf: > > + - $ref: /schemas/pinctrl/pinctrl.yaml > > + > > +patternProperties: > > + 'grp$': > > + type: object > > + description: > > + Pinctrl node's client devices use subnodes for desired pin configuration. > > + Client device subnodes use below standard properties. > > + > > + unevaluatedProperties: false > > + > > + properties: > > + fsl,pins: > > + description: > > + each entry consists of 6 integers and represents the mux and config > > + setting for one pin. The first 5 integers <mux_reg conf_reg input_reg > > + mux_val input_val> are specified using a PIN_FUNC_ID macro, which > can > > + be found in <arch/arm64/boot/dts/freescale/imx95-pinfunc.h>. The > last > > + integer CONFIG is the pad setting value like pull-up on this pin. > Please > > + refer to i.MX8M Plus Reference Manual for detailed CONFIG settings. > > + $ref: /schemas/types.yaml#/definitions/uint32-matrix > > + items: > > + items: > > + - description: | > > needn't "|" > No. there will be dt binding check warning because of quoted string. Regards, Peng. > Frank > > > + "mux_reg" indicates the offset of mux register. > > + - description: | > > + "conf_reg" indicates the offset of pad configuration register. > > + - description: | > > + "input_reg" indicates the offset of select input register. > > + - description: | > > + "mux_val" indicates the mux value to be applied. > > + - description: | > > + "input_val" indicates the select input value to be applied. > > + - description: | > > + "pad_setting" indicates the pad configuration value to be applied. > > + > > + > > + required: > > + - fsl,pins > > + > > +additionalProperties: true > > -- > > 2.37.1 > >
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