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

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Message-Id: <20220112181113.875567-2-robert.hancock@calian.com>
Date:   Wed, 12 Jan 2022 12:11:11 -0600
From:   Robert Hancock <robert.hancock@...ian.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, robh+dt@...nel.org,
        michal.simek@...inx.com, nicolas.ferre@...rochip.com,
        claudiu.beznea@...rochip.com, devicetree@...r.kernel.org,
        Robert Hancock <robert.hancock@...ian.com>
Subject: [PATCH net-next 1/3] macb: bindings doc: added generic PHY and reset mappings for ZynqMP

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;
+		};
+	};
-- 
2.31.1