Hi,
A little background: I have a single board PC with a SMI712 (lynxEM+)
graphic chipset. X works like a charm.
I now need to hook up an LCD panel that has an RGB interface, but only
takes composite sync (CSync) input (not H and V sync).
The SMI chipset can generate composite sync, I see in the SMI spec that
setting the register CCR65, bit 0 to 0, outputs Hsync for the CRT. Setting
to 1 outputs composite sync on the same pin.
So what I want to know, is how can I make sure this is supported ?
I see in the Xconfig.conf man page that I can specify 'composite' on the
modeline to generate composite sync on hardware that supports it. Where is
that handled ? How can I make sure this setting is passed down to the
siliconmotion driver and it sets the register appropriately ? I looked
through the sources of siliconmotion_drv but I can not find anything about
setting that register.
Reason for investigating this is that obviously the lcd panel is not
working so I want to make sure the graphic chip actually outputs the right
stuff...
thank you for all advice !
Bruno
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