Hi Ville, On 23-03-2017 15:36, Ville Syrjälä wrote: > On Thu, Mar 23, 2017 at 05:14:19PM +0200, Shashank Sharma wrote: >> HDMI 1.4b support the CEA video modes as per range of CEA-861-D (VIC 1-64). >> For any other mode, the VIC filed in AVI infoframes should be 0. >> HDMI 2.0 sinks, support video modes range as per CEA-861-F spec, which is >> extended to (VIC 1-107). >> >> This patch adds a bool input variable, which indicates if the connected >> sink is a HDMI 2.0 sink or not. This will make sure that we don't pass a >> HDMI 2.0 VIC to a HDMI 1.4 sink. > The spec is unfortunately vague when it comes to the CEA-861-F VIC > transmission when there is a corresponding HDMI VIC for the same mode. > I'm not sure if it's telling us to set both or just one depending on > whether we're transmitting 3D video or not. Or at least I can't parse > that information from the spec. Anyone have a better crystal ball > in their possession? > I've been working in HDMI receivers and this is what I've got in a comment: 1282 /* 1283 * Update current VIC: When transmitting any extended video format 1284 * indicated through use of the HDMI_VIC field in the HDMI Vendor 1285 * Specific InfoFrame or any other format which is not described in 1286 * the above cases, an HDMI Source shall set the AVI InfoFrame VIC 1287 * field to zero. 1288 */ This was directly taken from the spec, can't remember exactly were though. So, the VIC in AVIIF must be set to 0 and the HDMI_VIC field in VSIF shall be set to the HDMI 4k VIC. Best regards, Jose Miguel Abreu _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
