Aw: Re: [next v7 8/8] arm64: dts: mt7986: add Bananapi R3

[Frank Wunderlich]

looks like i've found it:

when reverting these 2 (latter alone was not enough and seems not fixing the timeout as shown in my trace)

Revert "spi: mediatek: Enable irq when pdata is ready"  (HEAD -> 6.2-rc)
Revert "spi: spi-mtk-nor: Add recovery mechanism for dma read timeout"

so this breaks spi on mt7986:

c6f7874687f7 2022-11-28 spi: mediatek: Enable irq when pdata is ready

have sent bug-report to mailinglist and author/reviewer/maintainer...

regards Frank


> Gesendet: Dienstag, 27. Dezember 2022 um 10:43 Uhr
> Von: "Frank Wunderlich" <frank-w@xxxxxxxxxxxxxxx>
>
> at first look it seems it is needed...as i get this trace with 6.2:
>
> [    2.145931] pc : mtk_spi_can_dma+0x0/0x34
> [    2.155212] lr : mtk_spi_interrupt+0x74/0x360
>
> [    2.091801] mtk-spi 1100a000.spi: spi-mem transfer timeout
> [    2.097310] spi-nor: probe of spi0.0 failed with error -110
> [    2.102930] Unable to handle kernel read from unreadable memory at virtual address 0000000000000010
>
> but i get the same trace when reverting the cs-gpios change....seems something is broken in 6.2-rc1
>
> 6.1 works without the bogus cs-gpios (and the mt7531 interrupt-change)...
>
> have tried reverting this commit, but it does not fix the issue:
>
> 8330e9e8269b 2022-12-07 spi: spi-mtk-nor: Add recovery mechanism for dma read timeout