Description

WAN ethernet does not work on NanoPI R2C on edge because GMAC_CLK pin on PHY not provides output clock (for GMAC) by default. This updated device tree fix this issue. current and legacy branches have different (out of kernel) driver and don't need this dts fix.

[    2.902617] rk_gmac-dwmac ff540000.ethernet: IRQ eth_wake_irq not found
[    2.902640] rk_gmac-dwmac ff540000.ethernet: IRQ eth_lpi not found
[    2.902793] rk_gmac-dwmac ff540000.ethernet: PTP uses main clock
[    2.903026] rk_gmac-dwmac ff540000.ethernet: clock input or output? (input). <- this clock MUST be provided by PHY
[    2.903049] rk_gmac-dwmac ff540000.ethernet: TX delay(0x22).
[    2.903059] rk_gmac-dwmac ff540000.ethernet: RX delay(0x12).
[    2.903078] rk_gmac-dwmac ff540000.ethernet: integrated PHY? (no).
[    2.903136] rk_gmac-dwmac ff540000.ethernet: clock input from PHY
[    2.908159] rk_gmac-dwmac ff540000.ethernet: init for RGMII
[    2.910080] rk_gmac-dwmac ff540000.ethernet: User ID: 0x10, Synopsys ID: 0x35
[    2.910108] rk_gmac-dwmac ff540000.ethernet: DWMAC1000
[    2.910116] rk_gmac-dwmac ff540000.ethernet: DMA HW capability register supported
[    2.910123] rk_gmac-dwmac ff540000.ethernet: RX Checksum Offload Engine supported
[    2.910129] rk_gmac-dwmac ff540000.ethernet: COE Type 2
[    2.910135] rk_gmac-dwmac ff540000.ethernet: TX Checksum insertion supported
[    2.910141] rk_gmac-dwmac ff540000.ethernet: Wake-Up On Lan supported
[    2.910236] rk_gmac-dwmac ff540000.ethernet: Normal descriptors
[    2.910245] rk_gmac-dwmac ff540000.ethernet: Ring mode enabled
[    2.910252] rk_gmac-dwmac ff540000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[   22.330038] rk_gmac-dwmac ff540000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
[   22.340509] rk_gmac-dwmac ff540000.ethernet eth0: PHY [stmmac-0:03] driver [YT8521 Gigabit Ethernet] (irq=POLL)
[   22.348004] rk_gmac-dwmac ff540000.ethernet eth0: No Safety Features support found
[   22.348040] rk_gmac-dwmac ff540000.ethernet eth0: PTP not supported by HW
[   22.351173] rk_gmac-dwmac ff540000.ethernet eth0: configuring for phy/rgmii link mode

How Has This Been Tested?

• [X] Build patched image and test on target device.

Checklist:

• [X] My code follows the style guidelines of this project
• [X] I have performed a self-review of my own code
• [X] I have commented my code, particularly in hard-to-understand areas
• [X] I have made corresponding changes to the documentation
• [X] My changes generate no new warnings
• [ ] Any dependent changes have been merged and published in downstream modules

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