[PATCH v2 9/9] Documentation: migration: add i.MX8MP SoC UID change note

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 Documentation/migration-guides/migration-master.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/migration-guides/migration-master.rst b/Documentation/migration-guides/migration-master.rst
new file mode 100644
index 0000000000000000000000000000000000000000..5e1f15fe8988e178a4bb5fe12f0a9832391bfc51
--- /dev/null
+++ b/Documentation/migration-guides/migration-master.rst
@@ -0,0 +1,10 @@
+
+NXP i.MX8MP
+-----------
+
+* The i.MX8MP SoC UID really is 128bit. With this release all 128bit
+  are used for the SoC UID, previously only 64bit were used. This will
+  result in a different SoC UID and consequently a different machine_id
+  when systemd.machine_id is passed to Linux. If you need to keep the
+  previous 64bit SoC UID for compatibility reasons enable
+  CONFIG_ARCH_IMX8MP_KEEP_COMPATIBLE_SOC_UID

-- 
2.47.3