This patch adds the documentation for the ABI between the Linux kernel and userspace regarding the PPS generators. Signed-off-by: Rodolfo Giometti <giometti@xxxxxxxxxxxx> --- Documentation/ABI/testing/sysfs-pps-gen | 38 +++++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 39 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-pps-gen diff --git a/Documentation/ABI/testing/sysfs-pps-gen b/Documentation/ABI/testing/sysfs-pps-gen new file mode 100644 index 000000000000..7effe495d062 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-pps-gen @@ -0,0 +1,38 @@ +What: /sys/class/pps-gen/ +Date: February 2025 +Contact: Rodolfo Giometti <giometti@xxxxxxxxxxxx> +Description: + The /sys/class/pps-gen/ directory contains files and + directories that provide a unified interface to the PPS + generators. + +What: /sys/class/pps-gen/pps-genX/ +Date: February 2025 +Contact: Rodolfo Giometti <giometti@xxxxxxxxxxxx> +Description: + The /sys/class/pps-gen/pps-genX/ directory is related to X-th + PPS generator in the system. Each directory contain files to + manage and control its PPS generator. + +What: /sys/class/pps-gen/pps-genX/enable +Date: February 2025 +Contact: Rodolfo Giometti <giometti@xxxxxxxxxxxx> +Description: + This write-only file enables or disables generation of the + PPS signal. + +What: /sys/class/pps-gen/pps-genX/system +Date: February 2025 +Contact: Rodolfo Giometti <giometti@xxxxxxxxxxxx> +Description: + This read-only file returns "1" if the generator takes the + timing from the system clock, while it returns "0" if not + (i.e. from a peripheral device clock). + +What: /sys/class/pps-gen/pps-genX/time +Date: February 2025 +Contact: Rodolfo Giometti <giometti@xxxxxxxxxxxx> +Description: + This read-only file contains the current time stored into the + generator clock as two integers representing the current time + seconds and nanoseconds. diff --git a/MAINTAINERS b/MAINTAINERS index 63871eb816eb..d0b628c973f7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18532,6 +18532,7 @@ L: linuxpps@xxxxxxxxxxxxxxx (subscribers-only) S: Maintained W: http://wiki.enneenne.com/index.php/LinuxPPS_support F: Documentation/ABI/testing/sysfs-pps +F: Documentation/ABI/testing/sysfs-pps-gen F: Documentation/devicetree/bindings/pps/pps-gpio.yaml F: Documentation/driver-api/pps.rst F: drivers/pps/ -- 2.34.1
