diff --git a/common/recipes-bsp/skiboot/skiboot.inc b/common/recipes-bsp/skiboot/skiboot.inc
index fa30f09..702d865 100644
--- a/common/recipes-bsp/skiboot/skiboot.inc
+++ b/common/recipes-bsp/skiboot/skiboot.inc
@@ -3,14 +3,14 @@
 
 SRC_URI += "git://github.com/open-power/skiboot.git;nobranch=1"
 SRC_URI += "file://0001-external-Use-more-standard-PREFIX-vs-prefix.patch"
-SRC_URI += "file://0002-external-common-Teach-ARM-code-to-erase-mtd-chips.patch"
+SRC_URI += "file://0002-arch_flash_arm-Don-t-assume-mtd-partitions-are-short.patch"
 
 FILESEXTRAPATHS_append := "${THISDIR}/skiboot:"
 
 LIC_FILES_CHKSUM = "file://${S}/LICENCE;md5=3b83ef96387f14655fc854ddc3c6bd57"
 
-SRCREV = "skiboot-5.4.0-rc3"
-PV = "5.4.0-rc3"
+SRCREV = "skiboot-5.4.0"
+PV = "5.4.0"
 
 S = "${WORKDIR}/git"
 
diff --git a/common/recipes-bsp/skiboot/skiboot/0002-arch_flash_arm-Don-t-assume-mtd-partitions-are-short.patch b/common/recipes-bsp/skiboot/skiboot/0002-arch_flash_arm-Don-t-assume-mtd-partitions-are-short.patch
new file mode 100644
index 0000000..d05659a
--- /dev/null
+++ b/common/recipes-bsp/skiboot/skiboot/0002-arch_flash_arm-Don-t-assume-mtd-partitions-are-short.patch
@@ -0,0 +1,52 @@
+From 112b4eebe614ebc384dbb7806ae8508474b44212 Mon Sep 17 00:00:00 2001
+From: Joel Stanley <joel@jms.id.au>
+Date: Wed, 16 Nov 2016 13:33:32 +1030
+Subject: [PATCH] arch_flash_arm: Don't assume mtd labels are short
+To: skiboot@lists.ozlabs.org,
+    Cyril Bur <cyril.bur@au1.ibm.com>
+
+pflash relies on arch_flash_arm parsing /proc/mtd to discover the pnor
+partition. It helpfully uses strcasestr so it can handle the string
+changing, which is what has happened as we moved to upstream compliant
+mtd device tree bindings.
+
+We currently have a string like this:
+
+dev:    size   erasesize  name
+mtd0: 00060000 00001000 "u-boot"
+mtd1: 00020000 00001000 "u-boot-env"
+mtd2: 00280000 00001000 "kernel"
+mtd3: 001c0000 00001000 "initramfs"
+mtd4: 01740000 00001000 "rofs"
+mtd5: 00400000 00001000 "rwfs"
+mtd6: 02000000 00001000 "1e620000.flash-controller:flash@1"
+mtd7: 08000000 00001000 "1e630000.flash-controller:pnor@0"
+
+Unfortunately arch_flash_arm assumes the string will be at most 50
+characters. That's right before the label we're looking for starts so
+we ignore that line and keep searching.
+
+Fix it by allowing for a 255 character line.
+
+Fixes: 48ab7ce09504 (external/pflash: Add --mtd)
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ external/common/arch_flash_arm.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/external/common/arch_flash_arm.c b/external/common/arch_flash_arm.c
+index bb8800ff556d..3cdd41ded0a9 100644
+--- a/external/common/arch_flash_arm.c
++++ b/external/common/arch_flash_arm.c
+@@ -241,7 +241,7 @@ static char *get_dev_mtd(enum flash_access access)
+ {
+ 	FILE *f;
+ 	char *ret = NULL, *pos = NULL;
+-	char line[50];
++	char line[255];
+ 
+ 	if (access != BMC_MTD && access != PNOR_MTD)
+ 		return NULL;
+-- 
+2.10.2
+
diff --git a/common/recipes-bsp/skiboot/skiboot/0002-external-common-Teach-ARM-code-to-erase-mtd-chips.patch b/common/recipes-bsp/skiboot/skiboot/0002-external-common-Teach-ARM-code-to-erase-mtd-chips.patch
deleted file mode 100644
index 3ed9519..0000000
--- a/common/recipes-bsp/skiboot/skiboot/0002-external-common-Teach-ARM-code-to-erase-mtd-chips.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-From patchwork Mon Nov  7 06:28:49 2016
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-Subject: [1/3] external/common: Teach ARM code to erase 'mtd chips'
-From: Cyril Bur <cyril.bur@au1.ibm.com>
-X-Patchwork-Id: 691765
-Message-Id: <20161107062851.1016-1-cyril.bur@au1.ibm.com>
-To: skiboot@lists.ozlabs.org
-Date: Mon,  7 Nov 2016 17:28:49 +1100
-
-Currently the arch flash code for all architectures can only perform
-chip erases if there is a real flash driver attached.
-
-With increasing use of MTD on both host and BMC this code needs to know
-how to behave of the backend of blocklevel is MTD.
-
-This patch teaches the ARM specific code to pass an erase for the full
-size of the chip down the stack. This can be optimised into a chip erase
-within the kernel.
-
-Signed-off-by: Cyril Bur <cyril.bur@au1.ibm.com>
----
- external/common/arch_flash_arm.c | 13 +++++++++++--
- 1 file changed, 11 insertions(+), 2 deletions(-)
-
-diff --git a/external/common/arch_flash_arm.c b/external/common/arch_flash_arm.c
-index 697609d..bb8800f 100644
---- a/external/common/arch_flash_arm.c
-+++ b/external/common/arch_flash_arm.c
-@@ -300,8 +300,17 @@ int arch_flash_erase_chip(struct blocklevel_device *bl)
- 	if (!arch_data.init_bl || arch_data.init_bl != bl)
- 		return -1;
- 
--	if (!arch_data.flash_chip)
--		return -1;
-+	if (!arch_data.flash_chip) {
-+		/* Just assume its a regular erase */
-+		int rc;
-+		uint64_t total_size;
-+
-+		rc = blocklevel_get_info(bl, NULL, &total_size, NULL);
-+		if (rc)
-+			return rc;
-+
-+		return blocklevel_erase(bl, 0, total_size);
-+	}
- 
- 	return flash_erase_chip(arch_data.flash_chip);
- }