diff --git a/src/dcp.c b/src/dcp.c
index f0e873c8..8cccf4f5 100644
--- a/src/dcp.c
+++ b/src/dcp.c
@@ -67,7 +67,7 @@ static int dcp_hdmi_dptx_init(dcp_dev_t *dcp, const display_config_t *cfg)
         return -1;
     }
 
-    dcp->dptx_ep = dcp_dptx_init(dcp);
+    dcp->dptx_ep = dcp_dptx_init(dcp, cfg->num_dptxports);
     if (!dcp->dptx_ep) {
         printf("dcp: failed to initialize dptx-port endpoint\n");
         dcp_dpav_shutdown(dcp->dpav_ep);
diff --git a/src/dcp.h b/src/dcp.h
index 5046b3d5..fb323184 100644
--- a/src/dcp.h
+++ b/src/dcp.h
@@ -20,6 +20,7 @@ typedef struct {
     const char dp2hdmi_gpio[24];
     const char pmgr_dev[24];
     u32 dcp_index;
+    u8 num_dptxports;
     u8 die;
 } display_config_t;
 
diff --git a/src/dcp/dptx_port_ep.c b/src/dcp/dptx_port_ep.c
index 4fabb3ea..cfe0deb3 100644
--- a/src/dcp/dptx_port_ep.c
+++ b/src/dcp/dptx_port_ep.c
@@ -13,8 +13,7 @@
 #include "../types.h"
 #include "../utils.h"
 
-#define DCP_DPTX_PORT_ENDPOINT     0x2a
-#define DCP_DPTX_PORT_NUM_SERVICES 2
+#define DCP_DPTX_PORT_ENDPOINT 0x2a
 
 #define TXBUF_LEN 0x4000
 #define RXBUF_LEN 0x4000
@@ -546,7 +545,7 @@ int dcp_dptx_disconnect(dcp_dptx_if_t *dptx, u32 port)
     return 0;
 }
 
-dcp_dptx_if_t *dcp_dptx_init(dcp_dev_t *dcp)
+dcp_dptx_if_t *dcp_dptx_init(dcp_dev_t *dcp, u32 num_dptxports)
 {
     dcp_dptx_if_t *dptx = calloc(1, sizeof(dcp_dptx_if_t));
     if (!dptx)
@@ -559,8 +558,7 @@ dcp_dptx_if_t *dcp_dptx_init(dcp_dev_t *dcp)
         goto err_free;
     }
 
-    int err = afk_epic_start_interface(dptx->epic, dptx, DCP_DPTX_PORT_NUM_SERVICES, TXBUF_LEN,
-                                       RXBUF_LEN);
+    int err = afk_epic_start_interface(dptx->epic, dptx, num_dptxports, TXBUF_LEN, RXBUF_LEN);
     if (err < 0) {
         printf("dcp-dptx: failed to initialize DPTXRemotePort interface\n");
         goto err_shutdown;
diff --git a/src/dcp/dptx_port_ep.h b/src/dcp/dptx_port_ep.h
index 8e520c2e..5a1eff13 100644
--- a/src/dcp/dptx_port_ep.h
+++ b/src/dcp/dptx_port_ep.h
@@ -52,7 +52,7 @@ enum dptx_link_rate {
     LINK_RATE_HBR3 = 0x1e,
 };
 
-dcp_dptx_if_t *dcp_dptx_init(dcp_dev_t *dcp);
+dcp_dptx_if_t *dcp_dptx_init(dcp_dev_t *dcp, u32 num_dptxports);
 int dcp_dptx_shutdown(dcp_dptx_if_t *dptx);
 
 int dcp_dptx_connect(dcp_dptx_if_t *dptx, dptx_phy_t *phy, u32 port);
diff --git a/src/display.c b/src/display.c
index ebe9c621..d1bf614f 100644
--- a/src/display.c
+++ b/src/display.c
@@ -45,6 +45,7 @@ static const display_config_t display_config_m2 = {
     .dptx_phy = "/arm-io/dptx-phy",
     .pmgr_dev = "DISP0_CPU0",
     .dcp_index = 0,
+    .num_dptxports = 2,
 };
 
 static const display_config_t display_config_m2_pro_max = {
@@ -55,6 +56,7 @@ static const display_config_t display_config_m2_pro_max = {
     .dptx_phy = "/arm-io/lpdptx-phy0",
     .pmgr_dev = "DISP0_CPU0",
     .dcp_index = 0,
+    .num_dptxports = 1,
 };
 
 static const display_config_t display_config_m2_ultra = {
@@ -65,6 +67,7 @@ static const display_config_t display_config_m2_ultra = {
     .dptx_phy = "/arm-io/lpdptx-phy1",
     .pmgr_dev = "DISPEXT4_CPU0",
     .dcp_index = 1,
+    .num_dptxports = 2,
     .die = 1,
 };