| What: /sys/bus/siox/devices/siox-X/active |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| On reading represents the current state of the bus. If it |
| contains a "0" the bus is stopped and connected devices are |
| expected to not do anything because their watchdog triggered. |
| When the file contains a "1" the bus is operated and periodically |
| does a push-pull cycle to write and read data from the |
| connected devices. |
| When writing a "0" or "1" the bus moves to the described state. |
| |
| What: /sys/bus/siox/devices/siox-X/device_add |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Write-only file. Write |
| |
| <type> <inbytes> <outbytes> <statustype> |
| |
| to add a new device dynamically. <type> is the name that is used to match |
| to a driver (similar to the platform bus). <inbytes> and <outbytes> define |
| the length of the input and output shift register in bytes respectively. |
| <statustype> defines the 4 bit device type that is check to identify connection |
| problems. |
| The new device is added to the end of the existing chain. |
| |
| What: /sys/bus/siox/devices/siox-X/device_remove |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Write-only file. A single write removes the last device in the siox chain. |
| |
| What: /sys/bus/siox/devices/siox-X/poll_interval_ns |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Defines the interval between two poll cycles in nano seconds. |
| Note this is rounded to jiffies on writing. On reading the current value |
| is returned. |
| |
| What: /sys/bus/siox/devices/siox-X-Y/connected |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Read-only value. "0" means the Yth device on siox bus X isn't "connected" i.e. |
| communication with it is not ensured. "1" signals a working connection. |
| |
| What: /sys/bus/siox/devices/siox-X-Y/inbytes |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Read-only value reporting the inbytes value provided to siox-X/device_add |
| |
| What: /sys/bus/siox/devices/siox-X-Y/status_errors |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Counts the number of time intervals when the read status byte doesn't yield the |
| expected value. |
| |
| What: /sys/bus/siox/devices/siox-X-Y/type |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Read-only value reporting the type value provided to siox-X/device_add. |
| |
| What: /sys/bus/siox/devices/siox-X-Y/watchdog |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Read-only value reporting if the watchdog of the siox device is |
| active. "0" means the watchdog is not active and the device is expected to |
| be operational. "1" means the watchdog keeps the device in reset. |
| |
| What: /sys/bus/siox/devices/siox-X-Y/watchdog_errors |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Read-only value reporting the number to time intervals when the |
| watchdog was active. |
| |
| What: /sys/bus/siox/devices/siox-X-Y/outbytes |
| KernelVersion: 4.16 |
| Contact: Gavin Schenk <g.schenk@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
| Description: |
| Read-only value reporting the outbytes value provided to siox-X/device_add. |