Messages in this thread | | | Subject | Re: [PATCH] docs: mtd: Update spi nor reference driver | From | John Garry <> | Date | Tue, 20 Aug 2019 15:09:15 +0100 |
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On 19/08/2019 05:39, Vignesh Raghavendra wrote: > Hi, > > On 16/08/19 3:50 PM, John Garry wrote: >> On 06/08/2019 17:40, Schrempf Frieder wrote: > [...] >> >> Hi, >> >> Could someone kindly advise on the following: >>
Hi Vignesh,
>> I am looking at ACPI support only for an mtd spi nor driver we're >> targeting for mainline support. >> > > If its a new driver, please add it under drivers/spi implementing SPI > MEM framework. > There are few drivers under drivers/spi that can be used as example. > (Search for "spi_mem_ops"
Ok, fine. I note that in doing this I would still be using the spi nor framework indirectly through the m25p80 driver.
>> So for the host, I could use a proprietary HID in the DSDT for matching >> in the kernel driver. >> >> About the child spi flash devices, is the recommendation to just use >> PRP0001 HID and "jedec,spi-nor" compatible? >> > > I am not quite familiar with ACPI systems, but child flash device should > use "jedec,spi-nor" as compatible.
Right, so to use SPI MEM framework, it looks like I will have to use PRP0001 and "jedec,spi-nor" as compatible.
My reluctance in using PRP0001 and compatible "jedec,spi-nor" is how other OS can understand this.
All the best, John
> > Regards > Vignesh > >> thanks, >> John >> >>
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