From: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Ben Hutchings <ben.hutchings-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jiang Liu <jiang.liu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2] x86: dts: ce4100: Use defined compatible string for PCF8575 chip
Date: Fri, 18 Mar 2016 16:44:39 -0500 [thread overview]
Message-ID: <20160318214439.GA17481@rob-hp-laptop> (raw)
In-Reply-To: <1458147080.20441.1.camel-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
On Wed, Mar 16, 2016 at 04:51:20PM +0000, Ben Hutchings wrote:
> The binding definition for the PCF857x GPIO expanders doesn't mention
> a "ti,pcf8575" compatible string. This is apparently because TI is
> only a second source - there is no functional difference between
> PCF8575 chips manufactured by TI and NXP, and the same board might be
> populated with either depending on availability.
>
> This is not a problem in practice because the I2C core uses
> of_modalias_node() before matching drivers and this strips the
> manufacturer name.
>
> Signed-off-by: Ben Hutchings <ben.hutchings-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
> ---
> v2: Correct the claim that this is a practical problem.
>
> Documentation/devicetree/bindings/i2c/i2c-pxa-pci-ce4100.txt | 4 ++--
> arch/x86/platform/ce4100/falconfalls.dts | 4 ++--
> 2 files changed, 4 insertions(+), 4 deletions(-)
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robh@kernel.org>
To: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: linux-kernel@vger.kernel.org,
Jiang Liu <jiang.liu@linux.intel.com>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v2] x86: dts: ce4100: Use defined compatible string for PCF8575 chip
Date: Fri, 18 Mar 2016 16:44:39 -0500 [thread overview]
Message-ID: <20160318214439.GA17481@rob-hp-laptop> (raw)
In-Reply-To: <1458147080.20441.1.camel@codethink.co.uk>
On Wed, Mar 16, 2016 at 04:51:20PM +0000, Ben Hutchings wrote:
> The binding definition for the PCF857x GPIO expanders doesn't mention
> a "ti,pcf8575" compatible string. This is apparently because TI is
> only a second source - there is no functional difference between
> PCF8575 chips manufactured by TI and NXP, and the same board might be
> populated with either depending on availability.
>
> This is not a problem in practice because the I2C core uses
> of_modalias_node() before matching drivers and this strips the
> manufacturer name.
>
> Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
> ---
> v2: Correct the claim that this is a practical problem.
>
> Documentation/devicetree/bindings/i2c/i2c-pxa-pci-ce4100.txt | 4 ++--
> arch/x86/platform/ce4100/falconfalls.dts | 4 ++--
> 2 files changed, 4 insertions(+), 4 deletions(-)
Acked-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2016-03-18 21:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 16:51 [PATCH v2] x86: dts: ce4100: Use defined compatible string for PCF8575 chip Ben Hutchings
[not found] ` <1458147080.20441.1.camel-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
2016-03-18 21:44 ` Rob Herring [this message]
2016-03-18 21:44 ` Rob Herring
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