Display Controllers

M series of chips have two kinds of display controllers: dcp and dcpext:

• DP 1.4 (4 lanes) with DSC
• HDMI via dp2hdmi converter. See below for routing restrictions.
• USB-C ports: DP altmode or USB4 tunneling, 2 controllers per port. See below for routing restrictions.

Type	Maximum resolution
dcp	5K
dcpext	6K

Family-specific information:

Family	Notes
M1	dcp can only be routed to internal display and HDMI, dcpext can only be routed to USB-C
M2 and later	dcp can be routed everywhere (internal display, HDMI and USB-C), dcpext can be routed to HDMI and USB-C

SoC-specific information:

SoC	Number of dcp	Number of dcpext	Notes
M1	1	1
M1 Pro	1	2
M1 Max	1	4
M1 Ultra	1	8	There are no Ultra devices with internal display. dcp is disabled on one of the dies, another dcp is routed to HDMI
M2	1	1
M2 Pro	1	2
M2 Max	1	4
M2 Ultra	0	8	There are no Ultra devices with internal display. dcp on both dies are disabled
M3	1	1
M3 Pro	1	2
M3 Max	1	4
M4 (tentative)	1	2