SPI NOR Flash on Odroid HC4

[duing]

How can we acces the SPI NOR Flash on Odroid HC4?

 

The usual error

seems to be the driver, not a thing we can overlay device tree? Id for xt25f128b is implemented.

Zitat

 

unrecognized JEDEC id 0

 

meson-spifc ffd14000.spi: registered host spi0
spi spi0.0: setup mode 0, 8 bits/w, 1000000 Hz max --> 0
spi-nor spi0.0: supply vcc not found, using dummy regulator
spi-nor spi0.0: error -95 reading JEDEC ID
spi-nor spi0.0: probe with driver spi-nor failed with error -95
meson-spifc ffd14000.spi: registered child spi0.0

 

Edited 6 hours ago by duing

[duing]

I tried different overlays, reduced max-frequency, set rx-(-tx)-bus-width and different mode settings indepently. Is it perhaps driven by gpio regulator instead of fixed 3v3? With a vcc-supply property one line (warning) goes away.

Edited 5 hours ago by duing

[duing]

I wanted to play with: kernel on ubifs or perhaps DAX on erofs.

 

Btw, Amlogic's boy did "job secure". The bootloader must be signed with aml-enc, a x86 binary, differently for SD and NOR flash. Anyways, it makes x00kb of trice encrypted and signed 0s.

Edited 5 hours ago by duing