nvmem-layout and mt76 eeprom (ramips/mt7621 target, 5.15.x)

[Sridhar]

What nonsense is this. Stupids, don’t you know who you are sending emails to, 

Thanks 
Sridhar 

Sent from my iPhone

> On Aug 25, 2023, at 5:39 AM, Piotr Dymacz <pepe2k at gmail.com> wrote:
> 
> Hi Rafał,
> 
> I'm trying to use the new NVMEM cells with mt76 EEPROM bindings on an mt7621 (SPI NOR flash) with mt79x5 (PCIe) based device, same way as you did in 03b3284805 [1] and daaa0c1b25 [2] (ath79 target).
> 
> If I keep 'eeprom' within 'nvmem-layout', wifi doesn't work due to:
> 
> root at OpenWrt:/# cat /sys/kernel/debug/devices_deferred
> 
> 0000:02:00.0pci: supplier 1e000b00.spi:flash at 0:partitions:partition at 50000:nvmem-layout not ready
> 
> Keeping 'eeprom' node outside 'nvmem-layout' gives expected results.
> 
> It seems there are only one (Netgear WNDR3700 v5) similar device under ramips/mt7621, with 'eeprom' within 'nvmem-layout' defines and SPI NOR (all other are NAND based, maybe related?) but I don't see any bug reports (complains) about broken WiFi for it.
> 
> Any clue?
> 
> You can find related DTS in my staging tree [3].
> 
> Thanks!
> 
> [1] https://git.openwrt.org/03b3284805
> [2] https://git.openwrt.org/daaa0c1b25
> [3] https://git.openwrt.org/?p=openwrt/staging/pepe2k.git;a=blob;f=target/linux/ramips/dts/mt7621_alfa-network_ax1800rm.dts;hb=refs/heads/main
> 
> -- 
> Cheers,
> Piotr
> 
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