Am Mi., 22. Juli 2020 um 14:39 Uhr schrieb Peng Fan peng.fan@nxp.com:
Subject: QSPI mode on imx6ull evk
Hi
I currently try to get the QSPI flash on the imx6ull evk working in quad mode. This attempt fails as when spi_child_post_bind is called there seems to be no spi child in the udevice (spi@21e0000) which then leads to spi_slave_ofdata_to_platdata not called and the according definitions in the device tree (like spi-rx-bus-width) are not parsed. I am using plain v2020.07 without any modifications on the MCIMX6ULL-EVK.
Any device tree changes to make it work?
I have no idea what to change in the DT to make it work. I found some hints to create an alias in the DT but everything i tried didn't help.
The qspi node in arch/arm/dts/imx6ul-14x14-evk.dtsi contains an entry for the flash but it doesn't show up as child in spi_child_post_bind. Maybe its just the wrong compatible string but I am clueless.
Regards
Matthias