Hi Bin,

On 05.10.2016 11:31, Bin Meng wrote:

+ML since others may be interested in it

Hi Stefan,

On Wed, Oct 5, 2016 at 3:30 PM, Stefan Roese sr@denx.de wrote:

...

Hi Bin,

I do have a quick questions for you:

I'm currently trying to integrate the MTD SPI NOR support for BayTrail. For this I've integrated this patch series on top of v4.8:

https://lkml.org/lkml/2016/8/15/55

Can you point me the v3 diffs? (like a patchwork link). From http://lists.infradead.org/pipermail/linux-mtd/2016-June/068280.html, v2 patch does not use ACPI.

The link above is for v3 but it doesn't use ACPI, you are correct.

...

First tests show that the driver probe / init is not called at all. Is my assumption correct that some ACPI code might be missing in U-Boot so that the driver will get instantiated in Linux? If yes, could you give me a quick hint, what might be missing? Perhaps point to some other driver example that also needs such ACPI code in the bootloader that you already integrated?

It may be caused by a kernel config that does not include this driver.

Yes, of course the driver needs to get enabled. I've already done this in my previous attempts. But somehow I missed something else - as now, the driver is loaded. Even though the SPI NOR is not detected correctly yet. I'm debugging right now...

Thanks, Stefan