Lines Matching +full:bus +full:- +full:power

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10 SLIMbus (Serial Low Power Interchip Media Bus) is a specification developed by
11 MIPI (Mobile Industry Processor Interface) alliance. The bus uses master/slave
12 configuration, and is a 2-wire multi-drop implementation (clock, and data).
15 (System-on-Chip) and peripheral components (typically codec). SLIMbus uses
16 Time-Division-Multiplexing to accommodate multiple data channels, and
19 The control channel is used for various control functions such as bus
24 A data channel is used for data-transfer between 2 SLIMbus devices. Data
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32 channel allocation. Every bus has 1 active manager.
36 Framer device is responsible for clocking the bus, and transmitting frame-sync
37 and framing information on the bus.
48 In case there are multiple framer devices on the same bus, manager device is
49 responsible to select the active-framer for clocking the bus.
51 Per specification, SLIMbus uses "clock gears" to do power management based on
55 Each device has a 6-byte enumeration-address and the manager assigns every
56 device with a 1-byte logical address after the devices report presence on the
57 bus.
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75 presence on the bus.
77 first so that it can enable corresponding SLIMbus device (e.g. power it up and/or
89 controller resets the bus. This notification allows the driver to take necessary
90 steps to boot the device so that it's functional after the bus has been reset.
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94 .. kernel-doc:: include/linux/slimbus.h
97 .. kernel-doc:: drivers/slimbus/slimbus.h
100 .. kernel-doc:: drivers/slimbus/core.c
103 Clock-pause:
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105 SLIMbus mandates that a reconfiguration sequence (known as clock-pause) be
106 broadcast to all active devices on the bus before the bus can enter low-power
107 mode. Controller uses this sequence when it decides to enter low-power mode so
108 that corresponding clocks and/or power-rails can be turned off to save power.
109 Clock-pause is exited by waking up framer device (if controller driver initiates
110 exiting low power mode), or by toggling the data line (if a slave device wants
113 Clock-pause APIs:
115 .. kernel-doc:: drivers/slimbus/sched.c
119 ----------
120 The framework supports regmap and read/write apis to exchange control-information
126 .. kernel-doc:: drivers/slimbus/messaging.c
131 .. kernel-doc:: drivers/slimbus/stream.c