45 lines
1.9 KiB
Plaintext
45 lines
1.9 KiB
Plaintext
STMicroelectronics STM32 / MCU DWMAC glue layer controller
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This file documents platform glue layer for stmmac.
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Please see stmmac.txt for the other unchanged properties.
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The device node has following properties.
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Required properties:
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- compatible: For MCU family should be "st,stm32-dwmac" to select glue, and
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"snps,dwmac-3.50a" to select IP version.
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For MPU family should be "st,stm32mp1-dwmac" to select
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glue, and "snps,dwmac-4.20a" to select IP version.
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- clocks: Must contain a phandle for each entry in clock-names.
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- clock-names: Should be "stmmaceth" for the host clock.
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Should be "mac-clk-tx" for the MAC TX clock.
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Should be "mac-clk-rx" for the MAC RX clock.
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For MPU family need to add also "ethstp" for power mode clock
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- interrupt-names: Should contain a list of interrupt names corresponding to
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the interrupts in the interrupts property, if available.
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Should be "macirq" for the main MAC IRQ
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Should be "eth_wake_irq" for the IT which wake up system
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- st,syscon : Should be phandle/offset pair. The phandle to the syscon node which
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encompases the glue register, and the offset of the control register.
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Optional properties:
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- clock-names: For MPU family "eth-ck" for PHY without quartz
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- st,eth-clk-sel (boolean) : set this property in RGMII PHY when you want to select RCC clock instead of ETH_CLK125.
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- st,eth-ref-clk-sel (boolean) : set this property in RMII mode when you have PHY without crystal 50MHz and want to select RCC clock instead of ETH_REF_CLK.
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Example:
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ethernet@40028000 {
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compatible = "st,stm32-dwmac", "snps,dwmac-3.50a";
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reg = <0x40028000 0x8000>;
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reg-names = "stmmaceth";
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interrupts = <0 61 0>, <0 62 0>;
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interrupt-names = "macirq", "eth_wake_irq";
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clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
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clocks = <&rcc 0 25>, <&rcc 0 26>, <&rcc 0 27>;
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st,syscon = <&syscfg 0x4>;
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snps,pbl = <8>;
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snps,mixed-burst;
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dma-ranges;
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};
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