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

Kumar Gala galak at kernel.crashing.org
Sat Mar 17 02:48:55 EST 2012

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.
> Therefore, if the DIU is going to be enabled, then memory-mapped devices on
> the localbus, like NOR flash, need to be disabled.
> This also means that the localbus is not a 'simple-bus' any more, so remove
> that string from the compatible node.
> Signed-off-by: Timur Tabi <timur at freescale.com>
> ---
> arch/powerpc/boot/dts/fsl/p1022si-post.dtsi |    6 ++-
> arch/powerpc/platforms/85xx/p1022_ds.c      |   71 +++++++++++++++++++++++++++
> 2 files changed, 76 insertions(+), 1 deletions(-)


- k

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