On Sun, May 19, 2019 at 12:44:18PM -0700, Jeff Kletsky wrote: > I'm in the process of porting the AR750S to the ath79 target with > SPI-NAND support now available on Linux 4.19[1]. > > From what I can tell, the AR300M (NAND) target, while it builds, > does not provide a functional image with either Linux 4.14 or 4.19 > as there has not been and is not yet an applicable SPI-NAND driver > built by OpenWrt[2]. > > While the ar71xx target had various patches to provide an SPI-attached > NAND driver, at least as I understand it, these were rejected for the > ath79 target in favor of the upstream SPI-NAND framework that would > become available[2,3]. > > While there is support for the GigaDevice E-series SPI NAND already > backported to OpenWrt under Linux 4.19[4] and I have submitted patches to > support the F-series chips upstream[5], I have been told that some of the > AR300M units also shipped with Paragon SPI NAND[6], for which there is no > upstream driver support at this time. > > > > As there is no bootable image produced, I would like to remove > the AR300M (NAND) target from the ath79 tree at this time. The AR300M > would remain on the ath79 generic (NOR) target. > > The intention is that the AR300M (NAND) would be reinstated once > proper driver support is available. > > > > ====================== > If you have objections to this course of action, please let me know. > ====================== > Nah. Worst case is we have to dig the commmit log and pull the data back out. That's the great thing about git. > > > Also, if you have an AR300M with the Paragon SPI NAND that you would > be able to assist me in testing development of an upstream-supported > driver, please also let me know. > I do believe my particular ar300m is paragon based, and I'm more than willing to assist wherever I can. I was under the impression that bbrezelion or however you spell it was working on a generic spi-nand driver? > From looking at the GL.iNet source[7], I would expect to see `dmesg` on > an OEM or image built from their sources to display a line containing > > spi-nand: Paragon SPI NAND was found. > > These are probably older-production units. > > > > Jeff > > > --- > > [1] http://patchwork.ozlabs.org/project/openwrt/list/?series=107880 > > [2] > http://lists.infradead.org/pipermail/openwrt-devel/2019-January/015604.html > > http://lists.infradead.org/pipermail/openwrt-devel/2019-January/015606.html > > [3] https://github.com/openwrt/openwrt/pull/1428#issuecomment-441594401 > > [4] 3bc8ed91d4 generic-4.19: Backport spi-nand support for GigaDevice A/E > > [5] http://patchwork.ozlabs.org/project/linux-mtd/list/?series=107874 > > [6] http://www.xtxtech.com/upfile/2016082517274590.pdf > > [7] > <https://github.com/gl-inet/openwrt/blob/develop/target/linux/ar71xx/patches-4.9/491-mtd-spi-nand-driver.patch#L2678> >
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