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| author | Raviteja Narayanam <[email protected]> | 2023-02-02 15:11:32 +0530 |
|---|---|---|
| committer | Wolfram Sang <[email protected]> | 2023-02-03 17:34:00 +0100 |
| commit | 2fd5cf352efa0c62dd20d1e046bc8767395b1ec0 (patch) | |
| tree | d20c20bf784052d179526fd7e0ab1f6c6e46554b /tools/perf/scripts/python/bin/export-to-sqlite-report | |
| parent | 813eac4fcb839bdf22aacfda0f2713fe50a82974 (diff) | |
i2c: xiic: Switch to Xiic standard mode for i2c-read
Xilinx I2C IP has two modes of operation, both of which implement
I2C transactions. The only difference from sw perspective is the
programming sequence for these modes.
Dynamic mode -> Simple to program, less number of steps in sequence.
Standard mode -> Gives flexibility, more number of steps in sequence.
In dynamic mode, during the i2c-read transactions, if there is a
delay(> 200us) between the register writes (address & byte count),
read transaction fails. On a system with load, this scenario is
occurring frequently.
To avoid this, switch to standard mode if there is a read request.
Added a quirk to identify the IP version effected by this and follow
the standard mode.
Signed-off-by: Raviteja Narayanam <[email protected]>
Signed-off-by: Manikanta Guntupalli <[email protected]>
Acked-by: Michal Simek <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/export-to-sqlite-report')
0 files changed, 0 insertions, 0 deletions