From: olof@lixom.net (Olof Johansson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] DT labels for connector device mapping
Date: Tue, 22 Dec 2015 11:25:55 -0800 [thread overview]
Message-ID: <20151222192555.GR30172@localhost> (raw)
In-Reply-To: <1449782473-20880-1-git-send-email-robh@kernel.org>
On Thu, Dec 10, 2015 at 03:21:10PM -0600, 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.
>
> BTW, there are no platform maintainers listed for these files. Setting
> them should be enforced for the dts files as DT maintainers mainly
> review binding docs, not dts files.
>
> Rob
>
> Rob Herring (3):
> arm64: dts: apq8016-sbc: enable UART0 on LS connector
> arm64: dts: apq8016-sbc: add label properties for UART, I2C, and SPI
> arm64: dts: hikey: add label properties to UARTs
Applied all 3 to next/dt64.
-Olof
prev parent reply other threads:[~2015-12-22 19:25 UTC|newest]
Thread overview: 8+ 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 ` [PATCH 1/3] arm64: dts: apq8016-sbc: enable UART0 on LS connector Rob Herring
2015-12-10 21:21 ` [PATCH 2/3] arm64: dts: apq8016-sbc: add label properties for UART, I2C, and SPI Rob Herring
2015-12-11 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 21:36 ` [PATCH 0/3] DT labels for connector device mapping Jorge Ramirez-Ortiz
2015-12-11 0:00 ` Rob Herring
2015-12-22 19:25 ` Olof Johansson [this message]
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