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Groups > linux.kernel > #1248826
| From | "Franklin S Cooper Jr." <fcooper@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] spi: Setup the master controller driver before setting the chipselect |
| Date | 2015-10-16 16:50 +0200 |
| Message-ID | <qkeuu-Sc-15@gated-at.bofh.it> (permalink) |
| References | <qjXN0-1dR-19@gated-at.bofh.it> <qkaqS-3p4-25@gated-at.bofh.it> <qkeb8-uX-5@gated-at.bofh.it> <qkeuu-Sc-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 10/16/2015 09:43 AM, Mark Brown wrote: > On Fri, Oct 16, 2015 at 09:27:50AM -0500, Franklin S Cooper Jr. wrote: > >> Makes sense. How about something like this? >> SPI controllers may need to be properly setup before chip selects >> can be used. Therefore, wait until the spi controller has a chance >> to perform their setup procedure before trying to use the chip >> select. > Yes, that's a lot better - there's also the fact that if we assert chip > select before we've got the pins in a good state we may cause the device > to see signals that confuse it as we change. Ok. I'll submit a rev2 with my updated commit message and incorporate your suggestion also. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH] spi: Setup the master controller driver before setting the chipselect Franklin S Cooper Jr <fcooper@ti.com> - 2015-10-15 23:00 +0200
Re: [PATCH] spi: Setup the master controller driver before setting the chipselect Mark Brown <broonie@kernel.org> - 2015-10-16 12:30 +0200
Re: [PATCH] spi: Setup the master controller driver before setting the chipselect "Franklin S Cooper Jr." <fcooper@ti.com> - 2015-10-16 16:30 +0200
Re: [PATCH] spi: Setup the master controller driver before setting the chipselect "Franklin S Cooper Jr." <fcooper@ti.com> - 2015-10-16 16:50 +0200
Re: [PATCH] spi: Setup the master controller driver before setting the chipselect Mark Brown <broonie@kernel.org> - 2015-10-16 16:50 +0200
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