linux-kernel - RE: [PATCH 4/7] dt-bindings: firmware: arm,scmi: support pinctrl protocol

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Message-ID:
 <DU0PR04MB94170BCA413C2FD48A397B538896A@DU0PR04MB9417.eurprd04.prod.outlook.com>
Date: Wed, 20 Dec 2023 01:58:09 +0000
From: Peng Fan <peng.fan@....com>
To: Marco Felsch <m.felsch@...gutronix.de>, "Peng Fan (OSS)"
	<peng.fan@....nxp.com>
CC: Sudeep Holla <sudeep.holla@....com>, Cristian Marussi
	<cristian.marussi@....com>, Rob Herring <robh+dt@...nel.org>, Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
	<conor+dt@...nel.org>, Oleksii Moisieiev <oleksii_moisieiev@...m.com>, Linus
 Walleij <linus.walleij@...aro.org>, Shawn Guo <shawnguo@...nel.org>, Sascha
 Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team
	<kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, dl-linux-imx
	<linux-imx@....com>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-gpio@...r.kernel.org"
	<linux-gpio@...r.kernel.org>
Subject: RE: [PATCH 4/7] dt-bindings: firmware: arm,scmi: support pinctrl
 protocol

> Subject: Re: [PATCH 4/7] dt-bindings: firmware: arm,scmi: support pinctrl
> protocol
> 
> Hi Peng,
> 
> On 23-12-15, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> >
> > Add SCMI v3.2 pinctrl protocol bindings and example.
> >
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >  .../devicetree/bindings/firmware/arm,scmi.yaml     | 99
> ++++++++++++++++++++++
> >  1 file changed, 99 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > index 4591523b51a0..bfd2b6a89979 100644
> > --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > @@ -247,6 +247,85 @@ properties:
> >        reg:
> >          const: 0x18
> >
> > +  protocol@19:
> 
> ...
> 
> > @@ -401,6 +480,26 @@ examples:
> >              scmi_powercap: protocol@18 {
> >                  reg = <0x18>;
> >              };
> > +
> > +            scmi_pinctrl: protocol@19 {
> > +                reg = <0x19>;
> > +                #pinctrl-cells = <0>;
> > +
> > +                i2c2-pins {
> > +                    groups = "i2c2_a", "i2c2_b";
> > +                    function = "i2c2";
> > +                };
> > +
> > +                mdio-pins {
> > +                    groups = "avb_mdio";
> > +                    drive-strength = <24>;
> > +                };
> > +
> > +                keys_pins: keys-pins {
> > +                    pins = "GP_5_17", "GP_5_20", "GP_5_22", "GP_2_1";
> > +                    bias-pull-up;
> > +                };
> > +            };
> 
> This example is different to the one you mentioned within the cover-letter. I
> didn't checked all patches just want to ask which API will be implemented by
> this patchset?

I kept this change since it was tested by Oleksii, but anyway i.MX not use these.

The API, I suppose you are asking about this?
static const struct pinctrl_ops pinctrl_scmi_pinctrl_ops = {                                        
        .get_groups_count = pinctrl_scmi_get_groups_count,                                          
        .get_group_name = pinctrl_scmi_get_group_name,                                              
        .get_group_pins = pinctrl_scmi_get_group_pins,                                              
#ifdef CONFIG_OF                                                                                    
        .dt_node_to_map = pinconf_generic_dt_node_to_map_all,                                       
        .dt_free_map = pinconf_generic_dt_free_map,                                                 
#endif                                                                                              
};

static const struct pinctrl_ops pinctrl_scmi_imx_pinctrl_ops = {                                    
        .get_groups_count = pinctrl_scmi_get_groups_count,                                          
        .get_group_name = pinctrl_scmi_get_group_name,                                              
        .get_group_pins = pinctrl_scmi_get_group_pins,                                              
#ifdef CONFIG_OF                                                                                    
        .dt_node_to_map = pinctrl_scmi_imx_dt_node_to_map,                                          
        .dt_free_map = pinconf_generic_dt_free_map,                                                 
#endif                                                                                              
};

Thanks,
Peng.

> 
> Regards,
>   Marco
> 
> >          };
> >      };
> >
> >
> > --
> > 2.37.1
> >
> >
> >