I've got empty 8Mb flash 25VF064C, what I don't use. So can I use it directly with my Pi?
Yes, I mean directly like /dev/mtd*.
If I can, then how? What do I have to install/recompile?
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1 Answer
UPDATED ANSWER:
Nowadays you can just use device tree overlays what Raspberry Pi firmware supports.
In my case, adding dtoverlay=jedec-spi-nor,flash-spi0-0 to config.txt was enough to pull up /dev/mtd*0
I needed to edit boardconfig in kernel source.
If anyone else wants to get flash chip working, here's the patch: http://mikroskeem.insomnia247.nl/linux/raspberrypi-patches/mtdflash.patch
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mikroskeem your link is not working could you update it? Sep 17, 2019 at 19:29
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I don't have that patch around anymore, but there is way better solution for that now - use device tree. However as I haven't played around with Raspberry Pi-s for a while now, then I don't have any proper answers. Sep 22, 2019 at 20:36