From b1520d8b9b0d19ce868cc99cf55f4db073ab7678 Mon Sep 17 00:00:00 2001 From: Claudiu Manoil Date: Mon, 24 Feb 2020 19:16:16 +0800 Subject: [PATCH] arm64: dts: ls1028a: add node for Felix switch Add the switch device node, available on PF5, so that the switch port sub-nodes (net devices) can be linked to corresponding board specific phy nodes (external ports) or have their link mode defined (internal ports). The switch device features 6 ports, 4 with external links and 2 internally facing to the LS1028A SoC and connected via fixed links to 2 internal ENETC Ethernet controller ports. Add the corresponding ENETC host port device nodes, mapped to PF2 and PF6 PCIe functions. Since the switch only supports tagging on one CPU port, only one port pair (swp4, eno2) is enabled by default and the other, lower speed, port pair is disabled to prevent the PCI core from probing them. If enabled, swp5 will be a fixed-link slave port. DSA tagging can also be moved from the swp4-eno2 2.5G port pair to the 1G swp5-eno3 pair by changing the ethernet = <&enetc_port2> phandle to <&enetc_port3> and moving it under port5, but in that case enetc_port2 should not be disabled, because it is the hardware owner of the Felix PCS and disabling its memory would result in access faults in the Felix DSA driver. All ports are disabled by default, including the CPU port, and need to be enabled on a per-board basis. The phy-mode binding of the internal ENETC ports was modified from "gmii" to "internal" to match the phy-mode of the internal-facing switch ports connected to them. The ENETC driver does not perform any phy_mode validation anyway, so the change is only cosmetic. Also, enetc_port2 is defined as a fixed-link 1000 Mbps port even though it is 2500 Mbps (as can be seen by the fact that it is connected to mscc_felix_port4). The fact that it is currently defined as 1000 Mbps is an artifact of its PHYLIB implementation instead of PHYLINK (the former can't describe a fixed-link speed higher than what swphy can emulate from the Clause 22 MDIO spec). The switch's INTB interrupt line signals: - PTP TX timestamp availability - TSN Frame Preemption And don't forget to enable the 4MB BAR4 in the root complex ECAM space, where the switch registers are mapped. Signed-off-by: Claudiu Manoil Signed-off-by: Alex Marginean Signed-off-by: Yangbo Lu Signed-off-by: Vladimir Oltean Tested-by: Michael Walle Signed-off-by: Shawn Guo --- .../arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 83 ++++++++++++++++++- 1 file changed, 82 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi index 9e7436a390fda..41c9633293fbc 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi @@ -739,7 +739,9 @@ /* PF1: VF0-1 BAR0 - non-prefetchable memory */ 0x82000000 0x0 0x00000000 0x1 0xf8210000 0x0 0x020000 /* PF1: VF0-1 BAR2 - prefetchable memory */ - 0xc2000000 0x0 0x00000000 0x1 0xf8230000 0x0 0x020000>; + 0xc2000000 0x0 0x00000000 0x1 0xf8230000 0x0 0x020000 + /* BAR4 (PF5) - non-prefetchable memory */ + 0x82000000 0x0 0x00000000 0x1 0xfc000000 0x0 0x400000>; enetc_port0: ethernet@0,0 { compatible = "fsl,enetc"; @@ -753,6 +755,18 @@ status = "disabled"; }; + enetc_port2: ethernet@0,2 { + compatible = "fsl,enetc"; + reg = <0x000200 0 0 0 0>; + phy-mode = "internal"; + status = "disabled"; + + fixed-link { + speed = <1000>; + full-duplex; + }; + }; + enetc_mdio_pf3: mdio@0,3 { compatible = "fsl,enetc-mdio"; reg = <0x000300 0 0 0 0>; @@ -767,6 +781,73 @@ little-endian; fsl,extts-fifo; }; + + ethernet-switch@0,5 { + reg = <0x000500 0 0 0 0>; + /* IEP INT_B */ + interrupts = ; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + /* External ports */ + mscc_felix_port0: port@0 { + reg = <0>; + status = "disabled"; + }; + + mscc_felix_port1: port@1 { + reg = <1>; + status = "disabled"; + }; + + mscc_felix_port2: port@2 { + reg = <2>; + status = "disabled"; + }; + + mscc_felix_port3: port@3 { + reg = <3>; + status = "disabled"; + }; + + /* Internal ports */ + mscc_felix_port4: port@4 { + reg = <4>; + phy-mode = "internal"; + status = "disabled"; + + fixed-link { + speed = <2500>; + full-duplex; + }; + }; + + mscc_felix_port5: port@5 { + reg = <5>; + phy-mode = "internal"; + status = "disabled"; + + fixed-link { + speed = <1000>; + full-duplex; + }; + }; + }; + }; + + enetc_port3: ethernet@0,6 { + compatible = "fsl,enetc"; + reg = <0x000600 0 0 0 0>; + phy-mode = "internal"; + status = "disabled"; + + fixed-link { + speed = <1000>; + full-duplex; + }; + }; }; }; -- 2.30.2