Lines Matching +full:side +full:- +full:by +full:- +full:side

4 While I2C supports multi-master buses this is difficult to get right.
5 The implementation on the master side in software is quite complex.
6 Clock-stretching and the arbitrary time that an I2C transaction can take
8 When one or more masters can be reset independently part-way through a
11 U-Boot provides a scheme based on two 'claim' GPIOs, one driven by the
12 AP (Application Processor, meaning the main CPU) and one driven by the EC
16 reboots by either side without difficulty.
18 Since U-Boot runs on the AP, the terminology used is 'our' claim GPIO,
20 is used by the device tree bindings in Linux also.
23 i2c-arb-gpio-challenge for the implementation.
28 - AP_CLAIM: output from AP, signalling to the EC that the AP wants the bus
29 - EC_CLAIM: output from EC, signalling to the AP that the EC wants the bus
32 sure that the other side doesn't want it also. A detailed explanation is best
38 2. Waits a little bit for the other side to notice (slew time)
46 7. Panic. The other side is hung with the CLAIM line set.
50 To release the bus, just de-assert the claim line.
53 - slew time 10 us
54 - retry time 3 ms
55 - wait time - 50ms
60 wait for access to the bus assuming that the other side isn't using it.