Hunting down a bug on my system I took to back-porting all reasonable changes from the Linux brcmnand driver that were not yet in the U-Boot derivative.
I noticed that a simple diff -ur between brcmnand.c between the file in Linux and U-Boot was possible to see what differs. Combining this with some git log --oneline manual comparison, fuzzing and manual intervention I backported a set of relevant patches from Linux that compiles and WorksForMe(TM).
The diff between Linux and U-Boot is much smaller after this, the main missing part are subsystem cosmetics changes and the EDU DMA mode support.
This was as much as I could bite off in one go.
All patches countersigned-off and marked as [backported].
ChangeLog v1->v2: - Drop the patch to use the new OOB data layout helpers "mtd: nand: brcm: switch to mtd_ooblayout_ops" - Drop all patches depending on the previous patch, in total 4 patches.
Claire Lin (1): mtd: rawnand: brcmnand: Fix ecc chunk calculation for erased page bitfips
Kamal Dasu (3): mtd: rawnand: brcmnand: Refactored code to introduce helper functions mtd: rawnand: brcmnand: Add support for v7.3 controller mtd: nand: brcmnand: Add support for flash-dma v0
Álvaro Fernández Rojas (6): mtd: rawnand: brcmnand: correctly verify erased pages mtd: rawnand: brcmnand: rename v4 registers mtd: rawnand: brcmnand: fix CS0 layout mtd: rawnand: brcmnand: rename page sizes mtd: rawnand: brcmnand: support v2.1-v2.2 controllers mtd: rawnand: brcmnand: fix OOB R/W with Hamming ECC
drivers/mtd/nand/raw/brcmnand/brcmnand.c | 353 +++++++++++++++++------ 1 file changed, 268 insertions(+), 85 deletions(-)