1*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X/active 2*4882a593SmuzhiyunKernelVersion: 4.16 3*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 4*4882a593SmuzhiyunDescription: 5*4882a593Smuzhiyun On reading represents the current state of the bus. If it 6*4882a593Smuzhiyun contains a "0" the bus is stopped and connected devices are 7*4882a593Smuzhiyun expected to not do anything because their watchdog triggered. 8*4882a593Smuzhiyun When the file contains a "1" the bus is operated and periodically 9*4882a593Smuzhiyun does a push-pull cycle to write and read data from the 10*4882a593Smuzhiyun connected devices. 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun When writing a "0" or "1" the bus moves to the described state. 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X/device_add 15*4882a593SmuzhiyunKernelVersion: 4.16 16*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 17*4882a593SmuzhiyunDescription: 18*4882a593Smuzhiyun Write-only file. Write 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun <type> <inbytes> <outbytes> <statustype> 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun to add a new device dynamically. <type> is the name that is used to match 23*4882a593Smuzhiyun to a driver (similar to the platform bus). <inbytes> and <outbytes> define 24*4882a593Smuzhiyun the length of the input and output shift register in bytes respectively. 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun <statustype> defines the 4 bit device type that is check to identify connection 27*4882a593Smuzhiyun problems. 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun The new device is added to the end of the existing chain. 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X/device_remove 32*4882a593SmuzhiyunKernelVersion: 4.16 33*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 34*4882a593SmuzhiyunDescription: 35*4882a593Smuzhiyun Write-only file. A single write removes the last device in the siox chain. 36*4882a593Smuzhiyun 37*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X/poll_interval_ns 38*4882a593SmuzhiyunKernelVersion: 4.16 39*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 40*4882a593SmuzhiyunDescription: 41*4882a593Smuzhiyun Defines the interval between two poll cycles in nano seconds. 42*4882a593Smuzhiyun Note this is rounded to jiffies on writing. On reading the current value 43*4882a593Smuzhiyun is returned. 44*4882a593Smuzhiyun 45*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/connected 46*4882a593SmuzhiyunKernelVersion: 4.16 47*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 48*4882a593SmuzhiyunDescription: 49*4882a593Smuzhiyun Read-only value. "0" means the Yth device on siox bus X isn't "connected" i.e. 50*4882a593Smuzhiyun communication with it is not ensured. "1" signals a working connection. 51*4882a593Smuzhiyun 52*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/inbytes 53*4882a593SmuzhiyunKernelVersion: 4.16 54*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 55*4882a593SmuzhiyunDescription: 56*4882a593Smuzhiyun Read-only value reporting the inbytes value provided to siox-X/device_add 57*4882a593Smuzhiyun 58*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/status_errors 59*4882a593SmuzhiyunKernelVersion: 4.16 60*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 61*4882a593SmuzhiyunDescription: 62*4882a593Smuzhiyun Counts the number of time intervals when the read status byte doesn't yield the 63*4882a593Smuzhiyun expected value. 64*4882a593Smuzhiyun 65*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/type 66*4882a593SmuzhiyunKernelVersion: 4.16 67*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 68*4882a593SmuzhiyunDescription: 69*4882a593Smuzhiyun Read-only value reporting the type value provided to siox-X/device_add. 70*4882a593Smuzhiyun 71*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/watchdog 72*4882a593SmuzhiyunKernelVersion: 4.16 73*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 74*4882a593SmuzhiyunDescription: 75*4882a593Smuzhiyun Read-only value reporting if the watchdog of the siox device is 76*4882a593Smuzhiyun active. "0" means the watchdog is not active and the device is expected to 77*4882a593Smuzhiyun be operational. "1" means the watchdog keeps the device in reset. 78*4882a593Smuzhiyun 79*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/watchdog_errors 80*4882a593SmuzhiyunKernelVersion: 4.16 81*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 82*4882a593SmuzhiyunDescription: 83*4882a593Smuzhiyun Read-only value reporting the number to time intervals when the 84*4882a593Smuzhiyun watchdog was active. 85*4882a593Smuzhiyun 86*4882a593SmuzhiyunWhat: /sys/bus/siox/devices/siox-X-Y/outbytes 87*4882a593SmuzhiyunKernelVersion: 4.16 88*4882a593SmuzhiyunContact: Thorsten Scherer <t.scherer@eckelmann.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 89*4882a593SmuzhiyunDescription: 90*4882a593Smuzhiyun Read-only value reporting the outbytes value provided to siox-X/device_add. 91