imx: nitrogen6x: mx6qsabrelite: Add support for DVI monitors
authorRobert Winkler <robert.winkler@boundarydevices.com>
Tue, 23 Jul 2013 22:07:56 +0000 (15:07 -0700)
committerStefano Babic <sbabic@denx.de>
Sat, 27 Jul 2013 08:52:42 +0000 (10:52 +0200)
commit10f779da54b8a8c85df6d58592c40836d8e7ed49
tree41660d6fcf1fcd5736c266d48903b88d48ec8f40
parenta11f18737c996a737b85be46b2e8363b7fa2659c
imx: nitrogen6x: mx6qsabrelite: Add support for DVI monitors

A little background is probably appropriate for this patch.

Since "the beginning" of usage of the SABRE Lite and Nitrogen6x
boards, DVI detection has been somewhat broken.

Some (most) DVI monitors don't produce the "HPD" bit in
the PHY_STAT0 register, but do show proper toggling of the
RX_SENSE0..3 bits.

Creating a new the bit-mask to include all five bits and
modifying the 'hdmidet' command and internal detection
routines allows these monitors to function properly in U-Boot.

A related patch to our kernels allows things to work under
Linux:
        https://github.com/boundarydevices/linux-imx6/commit/7d8752905c118af9063738a533227de0b2f6ecd4

Signed-off-by: Robert Winkler <robert.winkler@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
arch/arm/imx-common/cmd_hdmidet.c
arch/arm/include/asm/arch-mx6/mxc_hdmi.h
board/boundary/nitrogen6x/nitrogen6x.c