Messages in this thread | | | Date | Tue, 21 Jul 2020 11:50:54 +0800 | From | Xu Yilun <> | Subject | Re: [PATCH v2 3/3] mfd: intel-m10-bmc: add Max10 BMC chip support for Intel FPGA PAC |
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On Tue, Jul 21, 2020 at 11:47:13AM +0800, Xu Yilun wrote: > On Fri, Jul 17, 2020 at 07:16:09PM +0100, Mark Brown wrote: > > On Thu, Jul 16, 2020 at 06:42:54PM +0800, Xu Yilun wrote: > > > > > +static const struct spi_device_id m10bmc_spi_id[] = { > > > + { "m10-n3000", M10_N3000 }, > > > + { } > > > +}; > > > +MODULE_DEVICE_TABLE(spi, m10bmc_spi_id); > > > > > +static struct spi_driver intel_m10bmc_spi_driver = { > > > + .driver = { > > > + .name = "intel-m10-bmc", > > > + .dev_groups = m10bmc_dev_groups, > > > + }, > > > + .probe = intel_m10_bmc_spi_probe, > > > + .id_table = m10bmc_spi_id, > > > +}; > > > > > +module_spi_driver(intel_m10bmc_spi_driver); > > > > This device has no ACPI information - how will it be instantiated? > > In our case, The m10-bmc is connected to the intel FPGA (PAC N3000), > which uses the Device Feature List (DFL) mechanism to enumerate features > (devices) on FPGA. Each feature in DFL has a feature_id. And for this > m10-n3000 feature (feature_id = 0xd), it contains a spi-altera & a > m10-n3000 chip. So the DFL subsystem would help enumerate the info.
And some DFL related infomation: Documentation/fpga/dfl.rst drivers/fpga/dfl*
Thanks, Yilun
> > Recently I added the platform data for slave information in spi-altera, > to support this use case. > > Thanks, > Yilun
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