MHL_DCAP_VID_LINK_MODE
cbus_writeb(ctx, CBUS_DEVCAP_OFFSET + MHL_DCAP_VID_LINK_MODE,
[MHL_DCAP_VID_LINK_MODE] = MHL_DCAP_VID_LINK_RGB444
bool can_pack = ctx->devcap[MHL_DCAP_VID_LINK_MODE] &