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realtek: EnGenius EWS2910P: use the mtd3 partition for root overlay

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The root overlay is mounted on the "rootfs_data" partition. This comes
at the end of the firmware image, courtesy of mtdsplit. There is very
little space left (About 1MB), which can fill up rapidly.

The "firmware" and "firmware2" partitions are part of the bootloader
dual firmware logic. They should contain independent, valid uImages.
This leaves "jffs2-cfg" (mtd3) and "jffs2-log" (mtd4) as candidates.

mtd3 is about 13.7 MB and is used by the vendor firmware to store
configuration settings. It is only erased by vendor firmware during a
factory reset. By naming this partition "rootfs_data", it becomes the
root overlay, providing significantly more room. Even with mtdsplit
wanting to create a "rootfs_data" on the firmware partition, mtd3 is
used as the overlay.

Rename "jffs2-cfg" to "rootfs_data", and profit from the extra space.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc 2022-05-28 20:56:31 -05:00 committed by Sander Vanheule
parent 225137608c
commit 7bba7ccde9
1 changed files with 1 additions and 1 deletions
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2
target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts
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@ -144,7 +144,7 @@
reg = <0x90000 0x10000>;
};
partition@a0000 {
label = "jffs2-cfg";
label = "rootfs_data";
reg = <0xa0000 0xd60000>;
};
partition@e00000 {