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ramips: disable badblock shifting for MT7621 NAND

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The MediaTek MT7621 NAND driver currently intransparently shifts NAND
pages when a block is marked as bad. Because of this, offsets for e.g.
caldata and MAC-addresses seem to be off.

This is, howeer, not a task for the mtd NAND driver, as the flash
translation layer is tasked with this.

This patch disables this badblock shifting. This fix was originally
proposed by Jo-Philipp Wich at
https://bugs.openwrt.org/index.php?do=details&task_id=1926

Fixes FS#1926 ("MTD partition offset not correctly mapped when bad
eraseblocks present")
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 527832e54b)
This commit is contained in:
David Bauer
2019-08-28 23:40:51 +02:00
parent afce041e2b
commit b8b62b8506
1 changed files with 1 additions and 1 deletions
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2
target/linux/ramips/patches-4.14/0039-mtd-add-mt7621-nand-support.patch
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@@ -3578,7 +3578,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ if (!err) { + if (!err) {
+ MSG(INIT, "[mtk_nand] probe successfully!\n"); + MSG(INIT, "[mtk_nand] probe successfully!\n");
+ nand_disable_clock(); + nand_disable_clock();
+ shift_on_bbt = 1; + shift_on_bbt = 0;
+ if (load_fact_bbt(mtd) == 0) { + if (load_fact_bbt(mtd) == 0) {
+ int i; + int i;
+ for (i = 0; i < 0x100; i++) + for (i = 0; i < 0x100; i++)