Hi Florian, f.fainelli@xxxxxxxxx wrote on Fri, 7 Jan 2022 10:46:05 -0800: > Hi all, > > This patch series adds support for the BRCMNAND controller revision 3.4 > embedded in MIPS-based SoCs such as 5357, typically found in the Netgear > WNR3500L v2 and other kinds of Wi-Fi routers. The upstream platform that > uses this controller is under arch/mips/bcm47xx/ and does not use Device > Tree (and probably never will by now). BCMA (Broadcom AMBA) is a special > kind of discoverable memory mapped interface which requires the use of > special accessors to read from/write to the hardware block. > > The integration of brcmnand into that SoC is a bit quirky in that every > register offering byte level data about the flash (OOB, device ID, etc.) > requires byte swapping. The command shift should also have been 24, but > is in fact 0, took me a while to understand why no reads were actually > working because of that. > > This has been tested with Linux 5.10.82 and Linus' master with OpenWrt > and confirmed that the squashfs + jffs2 overlay that OpenWrt creates is > entirely functional and that written data is made persistent. Series applied on nand/next. Thanks, Miquèl
