[PATCH 0/3] DT labels for connector device mapping
Olof Johansson
olof at lixom.net
Tue Dec 22 11:25:55 PST 2015
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
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