From: Mark Brown <broonie@kernel.org>
To: John Garry <john.garry@huawei.com>
Cc: tudor.ambarus@microchip.com, linux-kernel@vger.kernel.org,
chenxiang66@hisilicon.com, linuxarm@huawei.com,
linux-spi@vger.kernel.org, marek.vasut@gmail.com,
linux-mtd@lists.infradead.org, xuejiancheng@hisilicon.com,
fengsheng5@huawei.com
Subject: Re: [PATCH v2 2/3] spi: Add HiSilicon v3xx SPI NOR flash controller driver
Date: Thu, 9 Jan 2020 21:28:42 +0000 [thread overview]
Message-ID: <20200109212842.GK3702@sirena.org.uk> (raw)
In-Reply-To: <0dc5cb2e-b765-9e13-b05e-9e3c835c5985@huawei.com>
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On Thu, Jan 09, 2020 at 03:54:00PM +0000, John Garry wrote:
> From checking acpi_spi_add_resource() or anywhere else, I cannot see how
> SPI_RX_DUAL or the others are set for spi_device.mode. What am I missing?
> Are these just not supported yet for ACPI? Or should the spi-nor code not be
> relying on this since we should be able to get this info from the SPI NOR
> part?
I'm not aware of any work on integrating this sort of stuff into ACPI
platforms so I think it's just not yet supported in ACPI. I'm not
really sure what would be idiomatic for ACPI, figuring it out from what
the part supports might well be idiomatic there though I don't know how
common it is for people not to wire up all the data lines even if both
controller and device support wider transfers. I've got a horrible
feeling that the idiomatic thing is a combination of that and a bunch of
per-device quirks. There may be a spec I'm not aware of though I'd be a
bit surprised.
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next prev parent reply other threads:[~2020-01-09 21:29 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-09 14:08 [PATCH v2 0/3] HiSilicon v3xx SFC driver John Garry
2019-12-09 14:08 ` [PATCH v2 1/3] mtd: spi-nor: hisi-sfc: Try to provide some clarity on which SFC we are John Garry
2020-01-16 11:03 ` Tudor.Ambarus
2019-12-09 14:08 ` [PATCH v2 2/3] spi: Add HiSilicon v3xx SPI NOR flash controller driver John Garry
2020-01-09 15:54 ` John Garry
2020-01-09 21:28 ` Mark Brown [this message]
2020-01-10 11:55 ` John Garry
2020-01-10 14:07 ` Mark Brown
2020-01-10 14:58 ` John Garry
2020-01-10 15:12 ` Mark Brown
2020-01-10 16:09 ` John Garry
2020-01-10 19:31 ` Andy Shevchenko
2020-01-13 10:09 ` John Garry
2020-01-13 11:42 ` Mark Brown
2020-01-13 13:01 ` John Garry
2020-01-13 14:06 ` Mark Brown
2020-01-13 14:17 ` Andy Shevchenko
2020-01-13 14:27 ` Mark Brown
2020-01-13 14:34 ` Andy Shevchenko
2020-01-31 10:08 ` John Garry
2020-01-31 11:39 ` Andy Shevchenko
2020-01-31 12:03 ` John Garry
2020-01-31 15:46 ` Andy Shevchenko
2020-01-31 16:26 ` John Garry
2020-02-01 11:34 ` Mark Brown
2020-02-01 11:32 ` Mark Brown
2020-01-10 19:59 ` Applied "spi: Add HiSilicon v3xx SPI NOR flash controller driver" to the spi tree Mark Brown
2019-12-09 14:08 ` [PATCH v2 3/3] MAINTAINERS: Add a maintainer for the HiSilicon v3xx SFC driver John Garry
2020-01-10 19:59 ` Applied "MAINTAINERS: Add a maintainer for the HiSilicon v3xx SFC driver" to the spi tree Mark Brown
2019-12-16 14:52 ` [PATCH v2 0/3] HiSilicon v3xx SFC driver John Garry
2019-12-16 14:56 ` Mark Brown
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