Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754505AbdHZHf2 (ORCPT ); Sat, 26 Aug 2017 03:35:28 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:36794 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752258AbdHZHfX (ORCPT ); Sat, 26 Aug 2017 03:35:23 -0400 From: Corentin Labbe To: robh+dt@kernel.org, mark.rutland@arm.com, maxime.ripard@free-electrons.com, wens@csie.org, linux@armlinux.org.uk, peppe.cavallaro@st.com, alexandre.torgue@st.com, andrew@lunn.ch, f.fainelli@gmail.com Cc: icenowy@aosc.io, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Corentin Labbe Subject: [PATCH v4 3/5] dt-bindings: net: dwmac-sun8i: update documentation about integrated PHY Date: Sat, 26 Aug 2017 09:33:09 +0200 Message-Id: <20170826073311.25612-4-clabbe.montjoie@gmail.com> X-Mailer: git-send-email 2.13.5 In-Reply-To: <20170826073311.25612-1-clabbe.montjoie@gmail.com> References: <20170826073311.25612-1-clabbe.montjoie@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4340 Lines: 163 This patch add documentation about the MDIO switch used on sun8i-h3-emac for integrated PHY. Signed-off-by: Corentin Labbe --- .../devicetree/bindings/net/dwmac-sun8i.txt | 117 ++++++++++++++++++++- 1 file changed, 112 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt index 725f3b187886..5751f7afc5dd 100644 --- a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt +++ b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt @@ -39,7 +39,7 @@ Optional properties for the following compatibles: - allwinner,leds-active-low: EPHY LEDs are active low Required child node of emac: -- mdio bus node: should be named mdio +- mdio bus node: should be labelled mdio Required properties of the mdio node: - #address-cells: shall be 1 @@ -48,14 +48,25 @@ Required properties of the mdio node: The device node referenced by "phy" or "phy-handle" should be a child node of the mdio node. See phy.txt for the generic PHY bindings. -Required properties of the phy node with the following compatibles: +The following compatibles require an mdio-mux node: + - "allwinner,sun8i-h3-emac" +Required properties for the mdio-mux node: + - compatible = "mdio-mux" + - two child mdio, one for the integrated mdio, one for the external mdio + - mdio-parent-bus: a phandle to the emac's MDIO node + +The following compatibles require a PHY node representing the integrated +PHY, under the integrated MDIO bus node if an mdio-mux node is used: - "allwinner,sun8i-h3-emac", - "allwinner,sun8i-v3s-emac": + +Required properties of the integrated phy node: - clocks: a phandle to the reference clock for the EPHY - resets: a phandle to the reset control for the EPHY +- phy-is-integrated +- Should be a child of the integrated mdio -Example: - +Example with integrated PHY: emac: ethernet@1c0b000 { compatible = "allwinner,sun8i-h3-emac"; syscon = <&syscon>; @@ -72,13 +83,109 @@ emac: ethernet@1c0b000 { phy-handle = <&int_mii_phy>; phy-mode = "mii"; allwinner,leds-active-low; - mdio: mdio { + + mdio0: mdio { + #address-cells = <1>; + #size-cells = <0>; + compatible = "snps,dwmac-mdio"; + }; + +}; +eth-phy-mux { + compatible = "mdio-mux"; + #address-cells = <1>; + #size-cells = <0>; + mdio-parent-bus = <&mdio0>; + + int_mdio: mdio@1 { + #address-cells = <1>; + #size-cells = <0>; + int_mii_phy: ethernet-phy@1 { + reg = <1>; + clocks = <&ccu CLK_BUS_EPHY>; + resets = <&ccu RST_BUS_EPHY>; + phy-is-integrated + }; + }; + ext_mdio: mdio@0 { + #address-cells = <1>; + #size-cells = <0>; + }; +}; + +Example with external PHY: +emac: ethernet@1c0b000 { + compatible = "allwinner,sun8i-h3-emac"; + syscon = <&syscon>; + reg = <0x01c0b000 0x104>; + interrupts = ; + interrupt-names = "macirq"; + resets = <&ccu RST_BUS_EMAC>; + reset-names = "stmmaceth"; + clocks = <&ccu CLK_BUS_EMAC>; + clock-names = "stmmaceth"; + #address-cells = <1>; + #size-cells = <0>; + + phy-handle = <&ext_rgmii_phy>; + phy-mode = "rgmii"; + allwinner,leds-active-low; + + mdio0: mdio { + #address-cells = <1>; + #size-cells = <0>; + compatible = "snps,dwmac-mdio"; + }; + +}; +eth-phy-mux { + compatible = "mdio-mux"; + #address-cells = <1>; + #size-cells = <0>; + mdio-parent-bus = <&mdio0>; + + int_mdio: mdio@1 { #address-cells = <1>; #size-cells = <0>; int_mii_phy: ethernet-phy@1 { reg = <1>; clocks = <&ccu CLK_BUS_EPHY>; resets = <&ccu RST_BUS_EPHY>; + phy-is-integrated + }; + }; + ext_mdio: mdio@0 { + #address-cells = <1>; + #size-cells = <0>; + ext_rgmii_phy: ethernet-phy@1 { + reg = <1>; + }; + }; +}; + +Example with SoC without integrated PHY + +emac: ethernet@1c0b000 { + compatible = "allwinner,sun8i-a83t-emac"; + syscon = <&syscon>; + reg = <0x01c0b000 0x104>; + interrupts = ; + interrupt-names = "macirq"; + resets = <&ccu RST_BUS_EMAC>; + reset-names = "stmmaceth"; + clocks = <&ccu CLK_BUS_EMAC>; + clock-names = "stmmaceth"; + #address-cells = <1>; + #size-cells = <0>; + + phy-handle = <&ext_rgmii_phy>; + phy-mode = "rgmii"; + + mdio: mdio { + #address-cells = <1>; + #size-cells = <0>; + ext_rgmii_phy: ethernet-phy@1 { + reg = <1>; }; }; }; -- 2.13.5