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].
It's nice if someone else tests this I think.
Boris Brezillon (1): mtd: nand: brcm: switch to mtd_ooblayout_ops
Claire Lin (1): mtd: rawnand: brcmnand: Fix ecc chunk calculation for erased page bitfips
Kamal Dasu (4): mtd: rawnand: brcmnand: Fix BCH ECC layout for large page NAND parts 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 (8): mtd: rawnand: brcmnand: fix hamming oob layout mtd: rawnand: brcmnand: improve hamming oob layout 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 | 615 ++++++++++++++++------- 1 file changed, 425 insertions(+), 190 deletions(-)