From mboxrd@z Thu Jan 1 00:00:00 1970 From: jorge.ramirez-ortiz@linaro.org (Jorge Ramirez-Ortiz) Date: Thu, 10 Dec 2015 16:36:19 -0500 Subject: [PATCH 0/3] DT labels for connector device mapping In-Reply-To: <1449782473-20880-1-git-send-email-robh@kernel.org> References: <1449782473-20880-1-git-send-email-robh@kernel.org> Message-ID: <5669F053.4080509@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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?