diff --git a/src/isp.c b/src/isp.c
index 1b4f29fb..fb34da2d 100644
--- a/src/isp.c
+++ b/src/isp.c
@@ -19,67 +19,6 @@
 #define ISP_PMGR_T6000 0x8
 #define ISP_PMGR_T6020 0x4008
 
-/* ISP DART has some quirks we must work around */
-
-#define DART_T8020_ENABLED_STREAMS 0xfc
-#define DART_T8020_STREAM_COMMAND  0x20
-#define DART_T8020_STREAM_SELECT   0x34
-#define DART_T8020_TCR_OFF         0x100
-#define DART_T8020_TTBR            0x200
-
-#define DART_T8020_TCR_TRANSLATE_ENABLE      BIT(7)
-#define DART_T8020_STREAM_COMMAND_INVALIDATE BIT(20)
-
-struct dart_tunables {
-    u64 offset;
-    u64 clear;
-    u64 set;
-};
-
-static void isp_ctrr_init_t8020(u64 base, const struct dart_tunables *config, u32 length)
-{
-    /* DART error handler gets stuck w/o these */
-    write32(base + DART_T8020_ENABLED_STREAMS, 0x1);
-    write32(base + 0x2f0, 0x0);
-    write32(base + DART_T8020_STREAM_SELECT, 0xffffffff);
-    write32(base + DART_T8020_STREAM_COMMAND, DART_T8020_STREAM_COMMAND_INVALIDATE);
-
-    /* I think these lock CTRR? Configurable __TEXT read-only region? */
-    int count = length / sizeof(*config);
-    for (int i = 0; i < count; i++) {
-        u64 offset = config->offset & 0xffff;
-        u32 set = config->set & 0xffffffff;
-        mask32(base + offset, read32(base + offset), set);
-        config++;
-    }
-
-    write32(base + DART_T8020_TCR_OFF, DART_T8020_TCR_TRANSLATE_ENABLE);
-    write32(base + 0x13c, 0x20000);
-}
-
-static void isp_ctrr_init_t6000(u64 base, const struct dart_tunables *config, u32 length, int index)
-{
-    write32(base + DART_T8020_ENABLED_STREAMS, 0x1);
-    write32(base + 0x2f0, 0x0);
-    mask32(base + DART_T8020_STREAM_SELECT, read32(base + DART_T8020_STREAM_SELECT), 0xffff);
-    // write32(base + DART_T8020_STREAM_SELECT, 0xffff); // diff from t8020
-    write32(base + DART_T8020_STREAM_COMMAND, 0x0);
-
-    int count = length / sizeof(*config);
-    for (int i = 0; i < count; i++) {
-        u64 offset = config->offset & 0xffff;
-        u32 set = config->set & 0xffffffff;
-        mask32(base + offset, read32(base + offset), set);
-        config++;
-    }
-
-    write32(base + DART_T8020_TCR_OFF, DART_T8020_TCR_TRANSLATE_ENABLE);
-    u32 val = 0x20000;
-    if (!index)
-        val |= 0x100;
-    write32(base + 0x13c, val);
-}
-
 static bool isp_initialized = false;
 static u64 heap_phys, heap_iova, heap_size, heap_top;
 
@@ -210,60 +149,8 @@ int isp_init(void)
 
     printf("isp: Heap: 0x%lx..0x%lx (0x%lx @ 0x%lx)\n", heap_iova, heap_top, heap_size, heap_phys);
 
-    enum dart_type_t type;
-    const char *type_s;
-    if (adt_is_compatible(adt, node, "dart,t8020")) {
-        type = DART_T8020;
-        type_s = "t8020";
-    } else if (adt_is_compatible(adt, node, "dart,t6000")) {
-        type = DART_T6000;
-        type_s = "t6000";
-    } else if (adt_is_compatible(adt, node, "dart,t8110")) {
-        type = DART_T8110;
-        type_s = "t8110";
-    } else {
-        printf("isp: dart %s is of an unknown type\n", dart_path);
-        return -1;
-    }
-
-    int dart_domain_count = 3; // TODO get from dt
-    for (int index = 0; index < dart_domain_count; index++) {
-        u64 base;
-        err = adt_get_reg(adt, adt_path, "reg", index, &base, NULL);
-        if (err < 0)
-            goto out;
-
-        u32 length;
-        char prop[32] = "dart-tunables-instance";
-        snprintf(prop, sizeof(prop), "dart-tunables-instance-%u", index);
-        const struct dart_tunables *config = adt_getprop(adt, node, prop, &length);
-        if (!config || !length) {
-            printf("isp: Error getting ADT node %s property %s.\n", isp_path, prop);
-            err = -1;
-            goto out;
-        }
-
-        err = adt_get_reg(adt, adt_path, "reg", index, &base, NULL);
-        if (err < 0)
-            goto out;
-
-        switch (type) {
-            case DART_T8020:
-                isp_ctrr_init_t8020(base, config, length);
-                break;
-            case DART_T6000:
-                isp_ctrr_init_t6000(base, config, length, index);
-                break;
-            case DART_T8110:
-                printf("isp: warning: dart type %s not tested yet!\n", type_s);
-                isp_ctrr_init_t8020(base, config, length);
-                break;
-        }
-    }
-
     isp_initialized = true;
 
-out:
     pmgr_adt_power_disable(isp_path);
     return err;
 }