Lines Matching +full:bus +full:- +full:frequency
7 Required properties (per bus)
8 -----------------------------
10 - #address-cells - should be <1>. Read more about addresses below.
11 - #size-cells - should be <0>.
12 - compatible - name of I2C bus controller
17 The cells properties above define that an address of children of an I2C bus
20 Optional properties (per bus)
21 -----------------------------
26 - clock-frequency
27 frequency of bus clock in Hz.
29 - i2c-bus
31 devices and non-I2C devices, the 'i2c-bus' subnode can be used for
32 populating I2C devices. If the 'i2c-bus' subnode is present, only
34 '#address-cells' and '#size-cells' must be defined under this subnode
37 - i2c-scl-falling-time-ns
41 - i2c-scl-internal-delay-ns
44 - i2c-scl-rising-time-ns
48 - i2c-sda-falling-time-ns
52 - i2c-analog-filter
55 - i2c-digital-filter
58 - i2c-digital-filter-width-ns
60 (i2c-digital-filter). This width is specified in nanoseconds.
62 - i2c-analog-filter-cutoff-frequency
63 Frequency that the analog filter (i2c-analog-filter) uses to distinguish
64 which signal to filter. Signal with higher frequency than specified will
65 be filtered out. Only lower frequency will pass (this is applicable to
66 a low-pass analog filter). Typical value should be above the normal
67 i2c bus clock frequency (clock-frequency).
70 - multi-master
71 states that there is another master active on this bus. The OS can use
73 all the time, for example. Can not be combined with 'single-master'.
75 - pinctrl
76 add extra pinctrl to configure SCL/SDA pins to GPIO function for bus
79 - scl-gpios
80 specify the gpio related to SCL pin. Used for GPIO bus recovery.
82 - sda-gpios
83 specify the gpio related to SDA pin. Optional for GPIO bus recovery.
85 - single-master
86 states that there is no other master active on this bus. The OS can use
87 this information to detect a stalled bus more reliably, for example.
88 Can not be combined with 'multi-master'.
90 - smbus
91 states that additional SMBus restrictions and features apply to this bus.
95 - smbus-alert
96 states that the optional SMBus-Alert feature apply to this bus.
98 - mctp-controller
99 indicates that the system is accessible via this bus as an endpoint for
103 --------------------------------------
105 - compatible
108 - reg
113 which, in theory, can be on the same bus.
118 --------------------------------------
123 - host-notify
126 - interrupts
129 - interrupt-names
133 - reg-names
137 - wakeup-source
145 adapters that support this feature, may use "host-notify" property. I2C