STMicroelectronics STM32 / MCU DWMAC glue layer controller
|
|
This file documents platform glue layer for stmmac.
|
Please see stmmac.txt for the other unchanged properties.
|
|
The device node has following properties.
|
|
Required properties:
|
- compatible: For MCU family should be "st,stm32-dwmac" to select glue, and
|
"snps,dwmac-3.50a" to select IP version.
|
For MPU family should be "st,stm32mp1-dwmac" to select
|
glue, and "snps,dwmac-4.20a" 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 "mac-clk-tx" for the MAC TX clock.
|
Should be "mac-clk-rx" for the MAC RX clock.
|
For MPU family need to add also "ethstp" for power mode clock and,
|
"syscfg-clk" for SYSCFG clock.
|
- 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
|
- st,syscon : Should be phandle/offset pair. The phandle to the syscon node which
|
encompases the glue register, and the offset of the control register.
|
|
Optional properties:
|
- clock-names: For MPU family "mac-clk-ck" for PHY without quartz
|
- st,int-phyclk (boolean) : valid only where PHY do not have quartz and need to be clock
|
by RCC
|
|
Example:
|
|
ethernet@40028000 {
|
compatible = "st,stm32-dwmac", "snps,dwmac-3.50a";
|
reg = <0x40028000 0x8000>;
|
reg-names = "stmmaceth";
|
interrupts = <0 61 0>, <0 62 0>;
|
interrupt-names = "macirq", "eth_wake_irq";
|
clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
|
clocks = <&rcc 0 25>, <&rcc 0 26>, <&rcc 0 27>;
|
st,syscon = <&syscfg 0x4>;
|
snps,pbl = <8>;
|
snps,mixed-burst;
|
dma-ranges;
|
};
|
