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+--- Thread: Ethernet regression on Linux Kernel 6.5.4? (/showthread.php?tid=18732)
Ethernet regression on Linux Kernel 6.5.4? - Deathcrow - 09-21-2023
Today I tried upgrading my board to the 6.5 series kernel and it seems eth0 no longer shows up.
the typical "rk_gmac-dwmac" dmesg entries don't show up at all.
Anyone else facing this issue? This is a headless system and debugging via UART isn't much fun, so I've booted back into the working 6.4 kernel.
RE: Ethernet regression on Linux Kernel 6.5.4? - Deathcrow - 09-21-2023
Well, turns out a kernel option was renamed
-CONFIG_MFD_RK808=y
+CONFIG_MFD_RK8XX=y
Since it defaults to 'n' it got accidentally deselected and broke things. Built kernel with CONFIG_MFD_RK8XX and everything is fine again.
RE: Ethernet regression on Linux Kernel 6.5.4? - foresto - 09-22-2023
Thanks for posting the solution!
RE: Ethernet regression on Linux Kernel 6.5.4? - diederik - 09-22-2023
(09-21-2023, 02:16 PM)Deathcrow Wrote: Well, turns out a kernel option was renamed
-CONFIG_MFD_RK808=y
+CONFIG_MFD_RK8XX=y
Since it defaults to 'n' it got accidentally deselected and broke things. Built kernel with CONFIG_MFD_RK8XX and everything is fine again.
FTR: You actually need MFD_RK8XX_I2C (which depends on MFD_RK8XX)
The split/rename was because there's now also a MFD_RK8XX_SPI (for rk3588). Previously there was only the I2C interface.