netdev - Re: [PATCH net-next 1/3] macb: bindings doc: added generic PHY and reset mappings for ZynqMP

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Date:   Thu, 13 Jan 2022 16:34:02 +0000
From:   Robert Hancock <robert.hancock@...ian.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "michal.simek@...inx.com" <michal.simek@...inx.com>,
        "geert+renesas@...der.be" <geert+renesas@...der.be>
CC:     "nicolas.ferre@...rochip.com" <nicolas.ferre@...rochip.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "claudiu.beznea@...rochip.com" <claudiu.beznea@...rochip.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH net-next 1/3] macb: bindings doc: added generic PHY and
 reset mappings for ZynqMP

On Thu, 2022-01-13 at 08:25 +0100, Michal Simek wrote:
> 
> On 1/12/22 19:11, Robert Hancock wrote:
> > Updated macb DT binding documentation to reflect the phy-names, phys,
> > resets, reset-names properties which are now used with ZynqMP GEM
> > devices, and added a ZynqMP-specific DT example.
> > 
> > Signed-off-by: Robert Hancock <robert.hancock@...ian.com>
> > ---
> >   .../devicetree/bindings/net/macb.txt          | 33 +++++++++++++++++++
> >   1 file changed, 33 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/macb.txt
> > b/Documentation/devicetree/bindings/net/macb.txt
> > index a1b06fd1962e..e526952145b8 100644
> > --- a/Documentation/devicetree/bindings/net/macb.txt
> > +++ b/Documentation/devicetree/bindings/net/macb.txt
> > @@ -29,6 +29,12 @@ Required properties:
> >   	Optional elements: 'rx_clk' applies to cdns,zynqmp-gem
> >   	Optional elements: 'tsu_clk'
> >   - clocks: Phandles to input clocks.
> > +- phy_names, phys: Required with ZynqMP SoC when in SGMII mode.
> > +                   phy_names should be "sgmii-phy" and phys should
> > +                   reference PS-GTR generic PHY device for this controller
> > +                   instance. See ZynqMP example below.
> > +- resets, reset-names: Recommended with ZynqMP, specify reset control for
> > this
> > +		       controller instance with zynqmp-reset driver.
> >   
> >   Optional properties:
> >   - mdio: node containing PHY children. If this node is not present, then
> > PHYs
> > @@ -58,3 +64,30 @@ Examples:
> >   			reset-gpios = <&pioE 6 1>;
> >   		};
> >   	};
> > +
> > +	gem1: ethernet@...c0000 {
> > +		compatible = "cdns,zynqmp-gem", "cdns,gem";
> > +		interrupt-parent = <&gic>;
> > +		interrupts = <0 59 4>, <0 59 4>;
> > +		reg = <0x0 0xff0c0000 0x0 0x1000>;
> > +		clocks = <&zynqmp_clk LPD_LSBUS>, <&zynqmp_clk GEM1_REF>,
> > +			 <&zynqmp_clk GEM1_TX>, <&zynqmp_clk GEM1_RX>,
> > +			 <&zynqmp_clk GEM_TSU>;
> > +		clock-names = "pclk", "hclk", "tx_clk", "rx_clk", "tsu_clk";
> > +		#address-cells = <1>;
> > +		#size-cells = <0>;
> > +		#stream-id-cells = <1>;
> > +		iommus = <&smmu 0x875>;
> > +		power-domains = <&zynqmp_firmware PD_ETH_1>;
> > +		resets = <&zynqmp_reset ZYNQMP_RESET_GEM1>;
> > +		reset-names = "gem1_rst";
> > +		status = "okay";
> > +		phy-mode = "sgmii";
> > +		phy-names = "sgmii-phy";
> > +		phys = <&psgtr 1 PHY_TYPE_SGMII 1 1>;
> > +		fixed-link {
> > +			speed = <1000>;
> > +			full-duplex;
> > +			pause;
> > +		};
> > +	};
> 
> Geert already converted this file to yaml that's why you should target this
> version.

Is that version in a tree somewhere that can be patched against?

> 
> Thanks,
> Michal
-- 
Robert Hancock
Senior Hardware Designer, Calian Advanced Technologies
www.calian.com