From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Michal Suchanek <hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero
Date: Thu, 20 Aug 2015 11:45:04 -0700 [thread overview]
Message-ID: <20150820184504.GP12027@sirena.org.uk> (raw)
In-Reply-To: <3688fab67e7cdc7bcbff73dfd6b0fcdcc4e79eb6.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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On Thu, Aug 20, 2015 at 02:19:46PM -0000, Michal Suchanek wrote:
> When the maximum transfer speed is not set for a SPI slave the value
> remains 0 and the code in sunxi SPI divides by it. Use an arbitrary
> speed instead in that case.
You should always be using the transfer speed that is defined per
transfer, the core will ensure that this is always set.
WARNING: multiple messages have this Message-ID (diff)
From: broonie@kernel.org (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero
Date: Thu, 20 Aug 2015 11:45:04 -0700 [thread overview]
Message-ID: <20150820184504.GP12027@sirena.org.uk> (raw)
In-Reply-To: <3688fab67e7cdc7bcbff73dfd6b0fcdcc4e79eb6.1440080122.git.hramrach@gmail.com>
On Thu, Aug 20, 2015 at 02:19:46PM -0000, Michal Suchanek wrote:
> When the maximum transfer speed is not set for a SPI slave the value
> remains 0 and the code in sunxi SPI divides by it. Use an arbitrary
> speed instead in that case.
You should always be using the transfer speed that is defined per
transfer, the core will ensure that this is always set.
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Michal Suchanek <hramrach@gmail.com>
Cc: linux-sunxi@googlegroups.com, Rob Herring <robh+dt@kernel.org>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Russell King <linux@arm.linux.org.uk>,
Maxime Ripard <maxime.ripard@free-electrons.com>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org
Subject: Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero
Date: Thu, 20 Aug 2015 11:45:04 -0700 [thread overview]
Message-ID: <20150820184504.GP12027@sirena.org.uk> (raw)
In-Reply-To: <3688fab67e7cdc7bcbff73dfd6b0fcdcc4e79eb6.1440080122.git.hramrach@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 359 bytes --]
On Thu, Aug 20, 2015 at 02:19:46PM -0000, Michal Suchanek wrote:
> When the maximum transfer speed is not set for a SPI slave the value
> remains 0 and the code in sunxi SPI divides by it. Use an arbitrary
> speed instead in that case.
You should always be using the transfer speed that is defined per
transfer, the core will ensure that this is always set.
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next prev parent reply other threads:[~2015-08-20 18:45 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-20 14:15 [PATCH 0/9] spi/sunxi patches Michal Suchanek
2015-08-20 14:15 ` Michal Suchanek
2015-08-20 14:15 ` Michal Suchanek
[not found] ` <cover.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 14:19 ` [PATCH 1/9] spi: sunxi: fix transfer timeout Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
[not found] ` <0e0b52774a48ddb71dc8095b66942451cd31ff7d.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 14:43 ` Maxime Ripard
2015-08-20 14:43 ` Maxime Ripard
2015-08-20 14:43 ` Maxime Ripard
2015-08-20 18:41 ` Mark Brown
2015-08-20 18:41 ` Mark Brown
2015-08-20 18:41 ` Mark Brown
[not found] ` <20150820184132.GO12027-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-08-20 19:34 ` Maxime Ripard
2015-08-20 19:34 ` Maxime Ripard
2015-08-20 19:34 ` Maxime Ripard
2015-08-20 21:08 ` Mark Brown
2015-08-20 21:08 ` Mark Brown
2015-08-20 21:08 ` Mark Brown
[not found] ` <20150820210830.GS12027-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-08-20 21:18 ` Maxime Ripard
2015-08-20 21:18 ` Maxime Ripard
2015-08-20 21:18 ` Maxime Ripard
2015-08-20 21:29 ` Mark Brown
2015-08-20 21:29 ` Mark Brown
2015-08-20 21:29 ` Mark Brown
2015-08-20 14:19 ` [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
[not found] ` <3688fab67e7cdc7bcbff73dfd6b0fcdcc4e79eb6.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 14:48 ` Maxime Ripard
2015-08-20 14:48 ` Maxime Ripard
2015-08-20 14:48 ` Maxime Ripard
2015-08-20 19:45 ` Michal Suchanek
2015-08-20 19:45 ` Michal Suchanek
2015-08-20 19:45 ` Michal Suchanek
[not found] ` <CAOMqctSfdxWeWDogzHxONE+Qxf7vp6rJnBmxECV89PQO0hXARg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-08-20 21:23 ` Maxime Ripard
2015-08-20 21:23 ` Maxime Ripard
2015-08-20 21:23 ` Maxime Ripard
2015-08-20 18:45 ` Mark Brown [this message]
2015-08-20 18:45 ` Mark Brown
2015-08-20 18:45 ` Mark Brown
2015-08-20 14:19 ` [PATCH 5/9] ARM: dts: sun7i: cubieboard2: Enable SPI0 Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
[not found] ` <a5a061d98b7ff851866cc668cd8bf8f6fc99d002.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 14:58 ` Maxime Ripard
2015-08-20 14:58 ` Maxime Ripard
2015-08-20 14:58 ` Maxime Ripard
2015-08-20 14:19 ` [PATCH 4/9] spi: sun4i: add DMA support Emilio López
2015-08-20 14:19 ` Emilio López
2015-08-20 14:19 ` Emilio López
[not found] ` <ccf776869b0d7fe2c78bcc41d6cd1896bf732296.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 14:24 ` [linux-sunxi] " Michal Suchanek
2015-08-20 14:24 ` Michal Suchanek
2015-08-20 14:24 ` Michal Suchanek
2015-08-20 14:56 ` Maxime Ripard
2015-08-20 14:56 ` Maxime Ripard
2015-08-20 14:56 ` Maxime Ripard
2015-08-20 18:58 ` Mark Brown
2015-08-20 18:58 ` Mark Brown
2015-08-20 18:58 ` Mark Brown
[not found] ` <20150820185850.GQ12027-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-05-17 5:44 ` Michal Suchanek
2016-05-17 5:44 ` [linux-sunxi] " Michal Suchanek
2016-05-17 5:44 ` Michal Suchanek
2015-08-20 19:00 ` Mark Brown
2015-08-20 19:00 ` Mark Brown
2015-08-20 19:00 ` Mark Brown
2015-08-20 14:19 ` [PATCH 2/9] spi: sun4i: fix FIFO limit Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
[not found] ` <a40fbf7ca8bd36f08f5e9d3fb6f6de2454066af7.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 14:45 ` Maxime Ripard
2015-08-20 14:45 ` Maxime Ripard
2015-08-20 14:45 ` Maxime Ripard
2015-08-20 14:19 ` [PATCH 6/9] ARM: dts: sunxi: add spi aliases on cubieboards Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` [PATCH 7/9] ARM: dts: sun5i: add SPI pins on A13 and A10s Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
[not found] ` <90730047894f6ec84cd70062a27b7085c2016260.1440080122.git.hramrach-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-08-20 15:00 ` Maxime Ripard
2015-08-20 15:00 ` Maxime Ripard
2015-08-20 15:00 ` Maxime Ripard
2015-08-20 14:19 ` [PATCH 8/9] ARM: dts: sunxi: A10s Olinuxino Micro: add spi2 Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` [PATCH 9/9] ARM: dts: sunxi: Add SPI aliases on A10s Olinuxino Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
2015-08-20 14:19 ` Michal Suchanek
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