diff --git a/cpu/esp32/ld/esp32.common.ld b/cpu/esp32/ld/esp32.common.ld
index 3fb975dc97e0..5d78197af266 100644
--- a/cpu/esp32/ld/esp32.common.ld
+++ b/cpu/esp32/ld/esp32.common.ld
@@ -116,25 +116,25 @@ SECTIONS
     *libc.a:*(.literal .text .literal.* .text.*)
 
     /* Xtensa basic functionality written in assembler should be placed in iram */
-    *xtensa.a:*(.literal .text .literal.* .text.*)
+    *xtensa/*(.literal .text .literal.* .text.*)
     /* ESP-IDF parts that have to run in IRAM */
-    *esp_idf_heap.a:*(.literal .text .literal.* .text.*)
-    *esp_idf_spi_flash.a:*(.literal .text .literal.* .text.*)
+    *esp_idf_heap/*(.literal .text .literal.* .text.*)
+    *esp_idf_spi_flash/*(.literal .text .literal.* .text.*)
     /* parts of RIOT that should to run in IRAM */
-    *core.a:*(.literal .text .literal.* .text.*)
-    *littlefs.a:*(.literal .text .literal.* .text.*)
-    *littlefs2.a:*(.literal .text .literal.* .text.*)
-    *newlib_syscalls_default.a:*(.literal .text .literal.* .text.*)
-    *spiffs_fs.a:*(.literal .text .literal.* .text.*)
-    *spiffs.a:*(.literal .text .literal.* .text.*)
+    *core/*(.literal .text .literal.* .text.*)
+    *littlefs/*(.literal .text .literal.* .text.*)
+    *littlefs2/*(.literal .text .literal.* .text.*)
+    *newlib_syscalls_default/*(.literal .text .literal.* .text.*)
+    *spiffs_fs/*(.literal .text .literal.* .text.*)
+    *spiffs/*(.literal .text .literal.* .text.*)
     *syscalls.o(.literal .text .literal.* .text.*)
-    *vfs.a:*(.literal .text .literal.* .text.*)
+    *vfs/*(.literal .text .literal.* .text.*)
 
     /* part of the RIOT port that should run in IRAM */
-    *cpu.a:*(.literal .text .literal.* .text.*)
-    *esp_common.a:*(.literal .text .literal.* .text.*)
-    *periph.a:*(.literal .text .literal.* .text.*)
-    *mtd.a:**(.literal .text .literal.* .text.*)
+    *cpu/*(.literal .text .literal.* .text.*)
+    *esp_common/*(.literal .text .literal.* .text.*)
+    *periph/*(.literal .text .literal.* .text.*)
+    *mtd/**(.literal .text .literal.* .text.*)
 
     INCLUDE esp32.spiram.rom-functions-iram.ld
     _iram_text_end = ABSOLUTE(.);
diff --git a/cpu/esp8266/ld/esp8266.riot-os.ld b/cpu/esp8266/ld/esp8266.riot-os.ld
index f9becdf0717f..56ad0bac075f 100644
--- a/cpu/esp8266/ld/esp8266.riot-os.ld
+++ b/cpu/esp8266/ld/esp8266.riot-os.ld
@@ -114,8 +114,8 @@ SECTIONS
     /* TODO put only necessary .rodata to dram */
     /* *(.rodata .rodata.*) */
     *libc.a:*.o(.rodata.* .rodata)
-    *core.a:*(.rodata.* .rodata)
-    *cpu.a:*(.rodata .rodata.*)
+    *core/*(.rodata.* .rodata)
+    *cpu/*(.rodata .rodata.*)
     *libpp.a:(.rodata.* .rodata)
     *liblog.a:(.rodata.* .rodata)
 
@@ -222,7 +222,7 @@ SECTIONS
     *(.literal .text)
     *core.a:*(.literal .text .literal.* .text.*)
     */
-    *gdbstub.a:*(.literal .text .literal.* .text.*)
+    *gdbstub/*(.literal .text .literal.* .text.*)
     *(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
     /* RIOT-OS compiled source files that use the .iram1.* section names for IRAM
        functions, etc. */
@@ -230,16 +230,16 @@ SECTIONS
 
     /* SDK libraries that expect their .text or .data sections to link to iram */
     /* TODO *libcore.a:(.bss .data .bss.* .data.* COMMON) */
-    *esp_idf_spi_flash.a:spi_flash_raw.o(.literal .text .literal.* .text.*)
-    *esp_idf_esp8266.a:ets_printf.o(.literal .text .literal.* .text.*)
+    *esp_idf_spi_flash/spi_flash_raw.o(.literal .text .literal.* .text.*)
+    *esp_idf_esp8266/ets_printf.o(.literal .text .literal.* .text.*)
     /*
     *cpu.a:*.o(.literal .text .literal.* .text.*)
     */
-    *core.a:sched.o(.literal .text .literal.* .text.*)
-    *esp_wifi.a:*(.literal .text .literal.* .text.*)
-    *freertos.a:*(.literal .text .literal.* .text.*)
-    *periph.a:*(.literal .text .literal.* .text.*)
-    *xtimer.a:*(.literal .text .literal.* .text.*)
+    *core/sched.o(.literal .text .literal.* .text.*)
+    *esp_wifi/*(.literal .text .literal.* .text.*)
+    *freertos/*(.literal .text .literal.* .text.*)
+    *periph/*(.literal .text .literal.* .text.*)
+    *xtimer/*(.literal .text .literal.* .text.*)
 
     *libhal.a:clock.o(.literal .text .literal.* .text.*)
     *libhal.a:int_asm--set_intclear.o(.literal .text .literal.* .text.*)
@@ -254,7 +254,7 @@ SECTIONS
     *libphy.a:phy_sleep.o(.literal .text .literal.* .text.*)
 
     /* Xtensa basic functionality written in assembler should be placed in iram */
-    *xtensa.a:*(.literal .text .literal.* .text.*)
+    *xtensa/*(.literal .text .literal.* .text.*)
 
     /* libgcc functions required for debugging have to be in IRAM */
     *libgcc.a:unwind-dw2.o(.literal .text .literal.* .text.*)
@@ -286,7 +286,7 @@ SECTIONS
     *libc.a:*fputwc.o(.literal .text .literal.* .text.*)
     */
 
-    enc28j60.a:*(.literal .text .literal.* .text.*)
+    *enc28j60/*(.literal .text .literal.* .text.*)
 
     *(.fini.literal)
     *(.fini)
diff --git a/tests/mtd_mapper/Makefile b/tests/mtd_mapper/Makefile
index 337a9fd7ef85..599f5792d9b0 100644
--- a/tests/mtd_mapper/Makefile
+++ b/tests/mtd_mapper/Makefile
@@ -3,7 +3,4 @@ include ../Makefile.tests_common
 USEMODULE += mtd_mapper
 USEMODULE += embunit
 
-# disabling due to unknown failure. See #15123.
-TEST_ON_CI_BLACKLIST += esp32-wroom-32
-
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/pkg_littlefs/Makefile b/tests/pkg_littlefs/Makefile
index 4c4cae6edc14..0cff046cf293 100644
--- a/tests/pkg_littlefs/Makefile
+++ b/tests/pkg_littlefs/Makefile
@@ -3,7 +3,4 @@ include ../Makefile.tests_common
 USEMODULE += littlefs
 USEMODULE += embunit
 
-# disabling due to unknown failure. See #15123.
-TEST_ON_CI_BLACKLIST += esp32-wroom-32
-
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/pkg_littlefs2/Makefile b/tests/pkg_littlefs2/Makefile
index 89b9b91a29da..07eef1db2cf9 100644
--- a/tests/pkg_littlefs2/Makefile
+++ b/tests/pkg_littlefs2/Makefile
@@ -3,7 +3,4 @@ include ../Makefile.tests_common
 USEPKG += littlefs2
 USEMODULE += embunit
 
-# disabling due to unknown failure. See #15123.
-TEST_ON_CI_BLACKLIST += esp32-wroom-32
-
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/pkg_spiffs/Makefile b/tests/pkg_spiffs/Makefile
index a0354076bfca..d52effe4bf7e 100644
--- a/tests/pkg_spiffs/Makefile
+++ b/tests/pkg_spiffs/Makefile
@@ -3,7 +3,4 @@ include ../Makefile.tests_common
 USEMODULE += spiffs
 USEMODULE += embunit
 
-# disabling due to unknown failure. See #15123.
-TEST_ON_CI_BLACKLIST += esp32-wroom-32
-
 include $(RIOTBASE)/Makefile.include