From: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
To: Nicolin Chen <nicoleotsuka-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: "broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
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<robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <Pawel.Moll-5wv7dgnIgG8@public.gmane.org>,
"ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org"
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<rdunlap-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
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<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
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<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
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tklauser
Subject: Re: [PATCH v3 2/2] ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers
Date: Tue, 29 Jul 2014 10:46:13 +0100 [thread overview]
Message-ID: <20140729094613.GK2576@leverpostej> (raw)
In-Reply-To: <f4ff79269a1680f9ce128e0e98fea926d3a41834.1406259578.git.nicoleotsuka-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> + - big-endian : If this property is absent, the native endian mode will
> + be in use as default, or the big endian mode will be in use
> + for all the device registers.
Native endian is meaningless. If a CPU supports both BE and LE, there is
no native endianness. The endianness of the kernel is dynamic while the
endianness of registers in HW is fixed.
Just choose an endianness to assume by default (presumably little). That
way this describes the HW and always works with a kernel of arbitrary
endianness.
Thanks,
Mark.
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Rutland <mark.rutland@arm.com>
To: Nicolin Chen <nicoleotsuka@gmail.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"b42378@freescale.com" <b42378@freescale.com>,
"timur@tabi.org" <timur@tabi.org>,
Pawel Moll <Pawel.Moll@arm.com>,
"ijc+devicetree@hellion.org.uk" <ijc+devicetree@hellion.org.uk>,
"tiwai@suse.de" <tiwai@suse.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rdunlap@infradead.org" <rdunlap@infradead.org>,
"b02247@freescale.com" <b02247@freescale.com>,
"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"perex@perex.cz" <perex@perex.cz>,
"broonie@kernel.org" <broonie@kernel.org>,
"galak@codeaurora.org" <galak@codeaurora.org>,
"grant.likely@linaro.org" <grant.likely@linaro.org>,
"tklauser@distanz.ch" <tklauser@distanz.ch>,
"shawn.guo@linaro.org" <shawn.guo@linaro.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH v3 2/2] ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers
Date: Tue, 29 Jul 2014 10:46:13 +0100 [thread overview]
Message-ID: <20140729094613.GK2576@leverpostej> (raw)
In-Reply-To: <f4ff79269a1680f9ce128e0e98fea926d3a41834.1406259578.git.nicoleotsuka@gmail.com>
> + - big-endian : If this property is absent, the native endian mode will
> + be in use as default, or the big endian mode will be in use
> + for all the device registers.
Native endian is meaningless. If a CPU supports both BE and LE, there is
no native endianness. The endianness of the kernel is dynamic while the
endianness of registers in HW is fixed.
Just choose an endianness to assume by default (presumably little). That
way this describes the HW and always works with a kernel of arbitrary
endianness.
Thanks,
Mark.
WARNING: multiple messages have this Message-ID (diff)
From: Mark Rutland <mark.rutland@arm.com>
To: Nicolin Chen <nicoleotsuka@gmail.com>
Cc: "broonie@kernel.org" <broonie@kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
Pawel Moll <Pawel.Moll@arm.com>,
"ijc+devicetree@hellion.org.uk" <ijc+devicetree@hellion.org.uk>,
"galak@codeaurora.org" <galak@codeaurora.org>,
"rdunlap@infradead.org" <rdunlap@infradead.org>,
"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
"perex@perex.cz" <perex@perex.cz>,
"tiwai@suse.de" <tiwai@suse.de>,
"timur@tabi.org" <timur@tabi.org>,
"grant.likely@linaro.org" <grant.likely@linaro.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"shawn.guo@linaro.org" <shawn.guo@linaro.org>,
"b02247@freescale.com" <b02247@freescale.com>,
"b42378@freescale.com" <b42378@freescale.com>,
"tklauser@distanz.ch" <tklauser@distanz.ch>
Subject: Re: [PATCH v3 2/2] ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers
Date: Tue, 29 Jul 2014 10:46:13 +0100 [thread overview]
Message-ID: <20140729094613.GK2576@leverpostej> (raw)
In-Reply-To: <f4ff79269a1680f9ce128e0e98fea926d3a41834.1406259578.git.nicoleotsuka@gmail.com>
> + - big-endian : If this property is absent, the native endian mode will
> + be in use as default, or the big endian mode will be in use
> + for all the device registers.
Native endian is meaningless. If a CPU supports both BE and LE, there is
no native endianness. The endianness of the kernel is dynamic while the
endianness of registers in HW is fixed.
Just choose an endianness to assume by default (presumably little). That
way this describes the HW and always works with a kernel of arbitrary
endianness.
Thanks,
Mark.
next prev parent reply other threads:[~2014-07-29 9:46 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-25 4:03 [PATCH v3 0/2] Add Freescale ASRC driver Nicolin Chen
2014-07-25 4:03 ` Nicolin Chen
2014-07-25 4:03 ` Nicolin Chen
2014-07-25 4:03 ` [PATCH v3 1/2] ARM: imx: Add the secondary request into the structure for imx-sdma Nicolin Chen
2014-07-25 4:03 ` Nicolin Chen
2014-07-25 4:03 ` Nicolin Chen
[not found] ` <cover.1406259578.git.nicoleotsuka-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-07-25 4:03 ` [PATCH v3 2/2] ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers Nicolin Chen
2014-07-25 4:03 ` Nicolin Chen
2014-07-25 4:03 ` Nicolin Chen
2014-07-25 4:24 ` Varka Bhadram
2014-07-25 4:24 ` Varka Bhadram
2014-07-25 4:24 ` Varka Bhadram
2014-07-25 5:30 ` Nicolin Chen
2014-07-25 5:30 ` Nicolin Chen
2014-07-25 5:30 ` Nicolin Chen
2014-07-25 5:40 ` Testing/Debugging alc668 with ASUS N750JK Patrick Shirkey
2014-07-26 4:01 ` Raymond Yau
2014-07-26 8:18 ` Patrick Shirkey
2014-07-29 3:58 ` Raymond Yau
2014-07-29 4:46 ` Patrick Shirkey
2014-07-31 3:27 ` Raymond Yau
2014-07-31 7:32 ` Patrick Shirkey
2014-07-31 13:38 ` Raymond Yau
2014-07-31 18:25 ` Patrick Shirkey
2014-08-01 7:19 ` Raymond Yau
2014-08-01 9:07 ` Patrick Shirkey
2014-08-01 10:04 ` Raymond Yau
2014-08-01 10:33 ` Patrick Shirkey
[not found] ` <53D1DC0B.1000905-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-07-25 5:54 ` [PATCH v3 2/2] ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers Nicolin Chen
2014-07-25 5:54 ` Nicolin Chen
2014-07-25 5:54 ` Nicolin Chen
2014-07-25 6:17 ` Varka Bhadram
2014-07-25 6:17 ` Varka Bhadram
2014-07-25 6:17 ` Varka Bhadram
2014-07-25 6:09 ` Nicolin Chen
2014-07-25 6:09 ` Nicolin Chen
2014-07-25 6:09 ` Nicolin Chen
[not found] ` <f4ff79269a1680f9ce128e0e98fea926d3a41834.1406259578.git.nicoleotsuka-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-07-29 9:46 ` Mark Rutland [this message]
2014-07-29 9:46 ` Mark Rutland
2014-07-29 9:46 ` Mark Rutland
2014-07-29 10:13 ` Nicolin Chen
2014-07-29 10:13 ` Nicolin Chen
2014-07-29 10:13 ` Nicolin Chen
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