From 29884aa6806ce27460281d0ec1819683261e89cd Mon Sep 17 00:00:00 2001 From: Fugang Duan Date: Thu, 28 May 2020 16:26:25 +0800 Subject: dt-bindings: net: imx-dwmac: Add NXP imx8 DWMAC glue layer Add description for NXP imx8 families like imx8mp/imx8dxl that integrate the Synopsys gmac IP version 5.10a. Signed-off-by: Fugang Duan Signed-off-by: David S. Miller --- .../devicetree/bindings/net/imx-dwmac.txt | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/imx-dwmac.txt diff --git a/Documentation/devicetree/bindings/net/imx-dwmac.txt b/Documentation/devicetree/bindings/net/imx-dwmac.txt new file mode 100644 index 000000000000..921d522fe8d7 --- /dev/null +++ b/Documentation/devicetree/bindings/net/imx-dwmac.txt @@ -0,0 +1,56 @@ +IMX8 glue layer controller, NXP imx8 families support Synopsys MAC 5.10a IP. + +This file documents platform glue layer for IMX. +Please see stmmac.txt for the other unchanged properties. + +The device node has following properties. + +Required properties: +- compatible: Should be "nxp,imx8mp-dwmac-eqos" to select glue layer + and "snps,dwmac-5.10a" to select IP version. +- clocks: Must contain a phandle for each entry in clock-names. +- clock-names: Should be "stmmaceth" for the host clock. + Should be "pclk" for the MAC apb clock. + Should be "ptp_ref" for the MAC timer clock. + Should be "tx" for the MAC RGMII TX clock: + Should be "mem" for EQOS MEM clock. + - "mem" clock is required for imx8dxl platform. + - "mem" clock is not required for imx8mp platform. +- interrupt-names: Should contain a list of interrupt names corresponding to + the interrupts in the interrupts property, if available. + Should be "macirq" for the main MAC IRQ + Should be "eth_wake_irq" for the IT which wake up system +- intf_mode: Should be phandle/offset pair. The phandle to the syscon node which + encompases the GPR register, and the offset of the GPR register. + - required for imx8mp platform. + - is optional for imx8dxl platform. + +Optional properties: +- intf_mode: is optional for imx8dxl platform. +- snps,rmii_refclk_ext: to select RMII reference clock from external. + +Example: + eqos: ethernet@30bf0000 { + compatible = "nxp,imx8mp-dwmac-eqos", "snps,dwmac-5.10a"; + reg = <0x30bf0000 0x10000>; + interrupts = , + ; + interrupt-names = "eth_wake_irq", "macirq"; + clocks = <&clk IMX8MP_CLK_ENET_QOS_ROOT>, + <&clk IMX8MP_CLK_QOS_ENET_ROOT>, + <&clk IMX8MP_CLK_ENET_QOS_TIMER>, + <&clk IMX8MP_CLK_ENET_QOS>; + clock-names = "stmmaceth", "pclk", "ptp_ref", "tx"; + assigned-clocks = <&clk IMX8MP_CLK_ENET_AXI>, + <&clk IMX8MP_CLK_ENET_QOS_TIMER>, + <&clk IMX8MP_CLK_ENET_QOS>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>, + <&clk IMX8MP_SYS_PLL2_100M>, + <&clk IMX8MP_SYS_PLL2_125M>; + assigned-clock-rates = <0>, <100000000>, <125000000>; + nvmem-cells = <ð_mac0>; + nvmem-cell-names = "mac-address"; + nvmem_macaddr_swap; + intf_mode = <&gpr 0x4>; + status = "disabled"; + }; -- cgit v1.2.3