On Thu, Nov 05, 2020 at 04:11:32PM +0100, Boris Brezillon wrote: > Cédric Le Goater <clg@xxxxxxxx> wrote: > > Thanks for this driver. It's much cleaner than the previous and we should > > try adding support for the AST2500 SoC also. I guess we can keep the old > > driver for the AST2400 which has a different register layout. > > > > On the patchset, I think we should split this patch in three : > > > > - basic support > > - AHB window calculation depending on the flash size > > - read training support > I didn't look closely at the implementation, but if the read training > tries to read a section of the NOR, I'd recommend exposing that feature > through spi-mem and letting the SPI-NOR framework trigger the training > instead of doing that at dirmap creation time (remember that spi-mem is > also used for SPI NANDs which use the dirmap API too, and this training > is unlikely to work there). > The SPI-NOR framework could pass a read op template and a reference > pattern such that all the spi-mem driver has to do is execute the > template op and compare the output to the reference buffer. That seems like a good idea. > > We should avoid magic values when setting registers. This is confusing > > and defines are much better. It does depend a bit on documentation though, it's not a hard requirement.
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