From: jorge.ramirez-ortiz@linaro.org (Jorge Ramirez-Ortiz)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] DT labels for connector device mapping
Date: Thu, 10 Dec 2015 16:36:19 -0500 [thread overview]
Message-ID: <5669F053.4080509@linaro.org> (raw)
In-Reply-To: <1449782473-20880-1-git-send-email-robh@kernel.org>
On 12/10/2015 04:21 PM, Rob Herring wrote:
> Having a common connector interface across different platforms can be
> problematic for determining which SOC device is connected to which
> connector pins. The standard DT property "label" is intended to provide
> a human readable name for a device and can be used to provide this
> information. Then userspace can can read the label to determine the
> device mapping. For example:
>
> for f in $(ls -d /sys/class/tty/tty*); do
> label=$(cat $f/device/of_node/label)
> if [ "$label" = "LS-UART1" ]; then
> # you've found UART1, so do something with it.
> # $f/dev is the major:minor for the /dev node
> fi
> done
>
> This series adds labels on hikey and dragonboard 410c devices for the
> low speed and high speed connectors. Not tested at all.
should we then use the line-name property on the GPIOs to have a common naming
convention across all 96Boards boards?
WARNING: multiple messages have this Message-ID (diff)
From: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
To: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Bintian Wang
<bintian.wang-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
Andy Gross <agross-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Grant Likely
<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Srinivas Kandagatla
<srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH 0/3] DT labels for connector device mapping
Date: Thu, 10 Dec 2015 16:36:19 -0500 [thread overview]
Message-ID: <5669F053.4080509@linaro.org> (raw)
In-Reply-To: <1449782473-20880-1-git-send-email-robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
On 12/10/2015 04:21 PM, Rob Herring wrote:
> Having a common connector interface across different platforms can be
> problematic for determining which SOC device is connected to which
> connector pins. The standard DT property "label" is intended to provide
> a human readable name for a device and can be used to provide this
> information. Then userspace can can read the label to determine the
> device mapping. For example:
>
> for f in $(ls -d /sys/class/tty/tty*); do
> label=$(cat $f/device/of_node/label)
> if [ "$label" = "LS-UART1" ]; then
> # you've found UART1, so do something with it.
> # $f/dev is the major:minor for the /dev node
> fi
> done
>
> This series adds labels on hikey and dragonboard 410c devices for the
> low speed and high speed connectors. Not tested at all.
should we then use the line-name property on the GPIOs to have a common naming
convention across all 96Boards boards?
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next prev parent reply other threads:[~2015-12-10 21:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 21:21 [PATCH 0/3] DT labels for connector device mapping Rob Herring
2015-12-10 21:21 ` Rob Herring
2015-12-10 21:21 ` [PATCH 1/3] arm64: dts: apq8016-sbc: enable UART0 on LS connector Rob Herring
2015-12-10 21:21 ` Rob Herring
2015-12-10 21:21 ` [PATCH 2/3] arm64: dts: apq8016-sbc: add label properties for UART, I2C, and SPI Rob Herring
2015-12-10 21:21 ` Rob Herring
2015-12-11 23:14 ` Kevin Hilman
2015-12-11 23:14 ` Kevin Hilman
2015-12-10 21:21 ` [PATCH 3/3] arm64: dts: hikey: add label properties to UARTs Rob Herring
2015-12-10 21:21 ` Rob Herring
2015-12-10 21:36 ` Jorge Ramirez-Ortiz [this message]
2015-12-10 21:36 ` [PATCH 0/3] DT labels for connector device mapping Jorge Ramirez-Ortiz
2015-12-11 0:00 ` Rob Herring
2015-12-11 0:00 ` Rob Herring
2015-12-22 19:25 ` Olof Johansson
2015-12-22 19:25 ` Olof Johansson
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