tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by
Fugang Duan
and committed by
David S. Miller
29884aa6
94abdad6
+56
+56
Documentation/devicetree/bindings/net/imx-dwmac.txt
+56
Documentation/devicetree/bindings/net/imx-dwmac.txt
···
1
+
IMX8 glue layer controller, NXP imx8 families support Synopsys MAC 5.10a IP.
2
+
3
+
This file documents platform glue layer for IMX.
4
+
Please see stmmac.txt for the other unchanged properties.
5
+
6
+
The device node has following properties.
7
+
8
+
Required properties:
9
+
- compatible: Should be "nxp,imx8mp-dwmac-eqos" to select glue layer
10
+
and "snps,dwmac-5.10a" to select IP version.
11
+
- clocks: Must contain a phandle for each entry in clock-names.
12
+
- clock-names: Should be "stmmaceth" for the host clock.
13
+
Should be "pclk" for the MAC apb clock.
14
+
Should be "ptp_ref" for the MAC timer clock.
15
+
Should be "tx" for the MAC RGMII TX clock:
16
+
Should be "mem" for EQOS MEM clock.
17
+
- "mem" clock is required for imx8dxl platform.
18
+
- "mem" clock is not required for imx8mp platform.
19
+
- interrupt-names: Should contain a list of interrupt names corresponding to
20
+
the interrupts in the interrupts property, if available.
21
+
Should be "macirq" for the main MAC IRQ
22
+
Should be "eth_wake_irq" for the IT which wake up system
23
+
- intf_mode: Should be phandle/offset pair. The phandle to the syscon node which
24
+
encompases the GPR register, and the offset of the GPR register.
25
+
- required for imx8mp platform.
26
+
- is optional for imx8dxl platform.
27
+
28
+
Optional properties:
29
+
- intf_mode: is optional for imx8dxl platform.
30
+
- snps,rmii_refclk_ext: to select RMII reference clock from external.
31
+
32
+
Example:
33
+
eqos: ethernet@30bf0000 {
34
+
compatible = "nxp,imx8mp-dwmac-eqos", "snps,dwmac-5.10a";
35
+
reg = <0x30bf0000 0x10000>;
36
+
interrupts = <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>,
37
+
<GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>;
38
+
interrupt-names = "eth_wake_irq", "macirq";
39
+
clocks = <&clk IMX8MP_CLK_ENET_QOS_ROOT>,
40
+
<&clk IMX8MP_CLK_QOS_ENET_ROOT>,
41
+
<&clk IMX8MP_CLK_ENET_QOS_TIMER>,
42
+
<&clk IMX8MP_CLK_ENET_QOS>;
43
+
clock-names = "stmmaceth", "pclk", "ptp_ref", "tx";
44
+
assigned-clocks = <&clk IMX8MP_CLK_ENET_AXI>,
45
+
<&clk IMX8MP_CLK_ENET_QOS_TIMER>,
46
+
<&clk IMX8MP_CLK_ENET_QOS>;
47
+
assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>,
48
+
<&clk IMX8MP_SYS_PLL2_100M>,
49
+
<&clk IMX8MP_SYS_PLL2_125M>;
50
+
assigned-clock-rates = <0>, <100000000>, <125000000>;
51
+
nvmem-cells = <ð_mac0>;
52
+
nvmem-cell-names = "mac-address";
53
+
nvmem_macaddr_swap;
54
+
intf_mode = <&gpr 0x4>;
55
+
status = "disabled";
56
+
};