[OpenWrt-Devel] Random data on rootfs_data for tp-wr2543nd-v1 only with ath79

Luiz Angelo Daros de Luca luizluca at gmail.com
Tue Feb 11 07:08:05 EST 2020

> There's no need for this. If it's implemented we could simply
> use it on all chips and gain the increased flash reading speed.

Ok. I'm using it during my tests, but I could remove it in the final

> On memory-mapped flash reading, spi controller issues 0x0b
> fast-read instruction. for the sake of correctness in spi-mem
> we should check whether spi-mem-op matches 0x0b + 3-byte
> address + 1-byte dummy before executing the operation.
> You'll need to set m25p,fast-read for spi-nor code to generate
> this matching operation.

The old fast read patch did not check the dummy byte. I'll do it as you

I already have a working WIP patch. It does fix the issue. I might post a
RFC version today.

> Chuanhong Guo
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