# Re: \[PATCH 1/2\] \[v4\] powerpc/85xx: p1022ds: disable the NOR flash node if video is enabled

- From: Kumar Gala \<hidden\>
- Date: 2012-03-16 15:49:12 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2012/03/9468831
- Thread: https://ratatoskr.run/linuxppc-dev/2012/02/9468267/t.md

```text

On Feb 15, 2012, at 6:25 PM, Timur Tabi wrote:

> The Freescale P1022 has a unique pin muxing "feature" where the DIU =
video
> controller's video signals are muxed with 24 of the local bus address =
signals.
> When the DIU is enabled, the bulk of the local bus is disabled, =
preventing
> access to memory-mapped devices like NOR flash and the pixis FPGA.
>=20
> Therefore, if the DIU is going to be enabled, then memory-mapped =
devices on
> the localbus, like NOR flash, need to be disabled.
>=20
> This also means that the localbus is not a 'simple-bus' any more, so =
remove
> that string from the compatible node.
>=20
> Signed-off-by: Timur Tabi <redacted>
> ---
> arch/powerpc/boot/dts/fsl/p1022si-post.dtsi |    6 ++-
> arch/powerpc/platforms/85xx/p1022_ds.c      |   71 =
+++++++++++++++++++++++++++
> 2 files changed, 76 insertions(+), 1 deletions(-)

applied

- k=
```