linux-phytec-ti

AM57X-131 gpu: drm: omapdrm: dss: support other VOUT ports

Allow dss_dpi_select_source_dra7xx to set the channel
in the AM57xx DSS_CONTROL register for any VOUT port,
not just VOUT1 (port 0).

Signed-off-by: Russell Robinson <rrobinson@phytec.com>