linux-kernel - Re: [PATCH v2 16/18] ARM: dts: qcom: remove redundant binding from ipq8064 rb3011 dts

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Date:   Sun, 20 Feb 2022 15:44:54 +0100
From:   Ansuel Smith <ansuelsmth@...il.com>
To:     Jonathan McDowell <noodles@...th.li>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 16/18] ARM: dts: qcom: remove redundant binding from
 ipq8064 rb3011 dts

On Fri, Feb 18, 2022 at 02:11:59PM +0000, Jonathan McDowell wrote:
> On Fri, Feb 18, 2022 at 01:29:54AM +0100, Ansuel Smith wrote:
> > Mdio0_pins are now declared in ipq8064 dtsi. Usb phy are enabled by
> > default.
> > 
> > Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
> > ---
> >  arch/arm/boot/dts/qcom-ipq8064-rb3011.dts | 17 -----------------
> >  1 file changed, 17 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/qcom-ipq8064-rb3011.dts b/arch/arm/boot/dts/qcom-ipq8064-rb3011.dts
> > index 0982b6214fb7..ddc9cc49ab60 100644
> > --- a/arch/arm/boot/dts/qcom-ipq8064-rb3011.dts
> > +++ b/arch/arm/boot/dts/qcom-ipq8064-rb3011.dts
> > @@ -259,10 +259,6 @@ &gsbi7_serial {
> >  	status = "okay";
> >  };
> >  
> > -&hs_phy_1 {
> > -	status = "okay";
> > -};
> > -
> >  &nand {
> >  	status = "okay";
> >  
> > @@ -309,15 +305,6 @@ mux {
> >  		};
> >  	};
> >  
> > -	mdio0_pins: mdio0_pins {
> > -		mux {
> > -			pins = "gpio0", "gpio1";
> > -			function = "gpio";
> > -			drive-strength = <8>;
> > -			bias-disable;
> > -		};
> > -	};
> > -
> 
> This sets the pins to "gpio". Your earlier patch sets them to "mdio", so
> removing this will break MDIO0 on the RB3011. It's likely that your
> fixes for MDIO/QCA8K mean that the RB3011 can be switch to use the MDIO
> driver rather than mdio-gpio, but that will need tested and this change
> alone will definitely break things.
> 

I could be wrong but I remember that before the mdio driver we used the
mdio-gpio driver with the pins set to mdio function without problems.

> >  	mdio1_pins: mdio1_pins {
> >  		mux {
> >  			pins = "gpio10", "gpio11";
> > @@ -358,10 +345,6 @@ mux {
> >  	};
> >  };
> >  
> > -&ss_phy_1 {
> > -	status = "okay";
> > -};
> > -
> >  &usb3_1 {
> >  	pinctrl-0 = <&usb1_pwr_en_pins>;
> >  	pinctrl-names = "default";
> > -- 
> > 2.34.1
> > 
> 
> J.
> 
> -- 
> /-\                             |  Even the Evening Herald slags me
> |@/  Debian GNU/Linux Developer |                off.
> \-                              |

-- 
	Ansuel