QSPI mode on imx6ull evk

QSPI mode on imx6ull evk

[Matthias Weißer]

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 at 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.

mx6ull_14x14_evk_defconfig was the config I used.

I tried to CC some of the people involved in the development of the affected
parts of u-boot. Please correct me if I am wrong. Any help would be appreciated.


Regards

Matthias

QSPI mode on imx6ull evk

[Peng Fan]

> 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 at 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?

Regards,
Peng.
> 
> mx6ull_14x14_evk_defconfig was the config I used.
> 
> I tried to CC some of the people involved in the development of the affected
> parts of u-boot. Please correct me if I am wrong. Any help would be
> appreciated.
> 
> 
> Regards
> 
> Matthias

QSPI mode on imx6ull evk

[Matthias Weißer]

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 at 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