this patch addresses the issue that there is no DVI output on beagleboard-xm in u-boot; the TFP410 is not powered on, DVI_PUP needs to be set high this is done differently on beagleboard-xm rev. B/C versus earlier boards: beagleboard-xm B/C need to set GPIO2 of the TWL4030 earlier boards need to set GPIO170 note that the change occured somewhere inbetween beagleboard-xm rev. A2 and A3 note that beagleboard-xm rev. A and rev. B cannot be distinguished using get_board_revision(), REVISION_XM_A/REVISION_XM_B is bogus due to this glitch, the patch cannot work correctly on some beagleboard-xm rev A/B boards tested on beagleboard-xm rev. C (you should see orange color on a monitor) note that the framebuffer is NOT yet set up, this could be done along the lines below (for 800x480 resolution and RGB24) before calling omap3_dss_enable() static void configure_frame_buffer() { writel(0x80500000, (uint *) 0x48050480); // address writel(0x80500000, (uint *) 0x48050484); writel(0x01df031f, (uint *) 0x4805048c); // size writel(0x00000091, (uint *) 0x480504a0); // RGB24 } Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>master
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