Kernel-4.18.0-80.el8_stm32-dwmac

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;
};