Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Mon, 11 Sep 2017 10:58:36 +0200 | Subject | Re: [DEBUG] mtd: spi-nor: dump DWORDs of the Basic Flash Parameter Table |
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Hi Cyrille,
On Thu, Sep 7, 2017 at 9:28 PM, Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> wrote: >> Can you apply this patch on your tree then report me what was printed, please? >> I have an idea of the root cause of your issue then a potential work-around >> but I first need to validate my assumption to confirm that the work-around >> would actually work.
+m25p80 spi0.0: DWORD1 = 0xffffffff +m25p80 spi0.0: DWORD2 = 0xffffffff +m25p80 spi0.0: DWORD3 = 0xffffffff +m25p80 spi0.0: DWORD4 = 0xffffffff +m25p80 spi0.0: DWORD5 = 0xffffffff +m25p80 spi0.0: DWORD6 = 0xffffffff +m25p80 spi0.0: DWORD7 = 0xffffffff +m25p80 spi0.0: DWORD8 = 0xffffffff +m25p80 spi0.0: DWORD9 = 0xffffffff +m25p80 spi0.0: DWORD10 = 0x00000000 +m25p80 spi0.0: DWORD11 = 0x00000000 +m25p80 spi0.0: DWORD12 = 0x00000000 +m25p80 spi0.0: DWORD13 = 0x00000000 +m25p80 spi0.0: DWORD14 = 0x00000000 +m25p80 spi0.0: DWORD15 = 0x00000000 +m25p80 spi0.0: DWORD16 = 0x00000000 +m25p80 spi0.0: BFPT version 1.0 (length = 9)
> If you could also dump the value of the 'addr' argument of > spi_nor_read_sfdp_dma_unsafe() just before the for () loop below in the > very same function. Actually, I suspect the SFDP tables of your SPI NOR
+m25p80 spi0.0: addr = 0x448
> memory sample to have been programmed with invalid values, neither > compliant with the JEDEC JESD216 specification nor with the Cypress > datasheet for this memory part.
Sounds plausible. I get the same values when disabling DMA, so it's not due to bad DMA handling. All Renesas boards I have local or remote access to have spansion,s25fl512s.
Thanks!
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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