diff options
| author | Biwen Li <[email protected]> | 2022-09-14 16:15:37 -0500 |
|---|---|---|
| committer | Shawn Guo <[email protected]> | 2022-09-17 16:35:22 +0800 |
| commit | 822f91d512abfe70349fce7b79cbdee8d0d016e9 (patch) | |
| tree | fdb6c17fb60cdd82f3f340392cece3ff752da882 /tools/perf/scripts/python | |
| parent | ad5b6611e1574356efc214e94249fefd055dd202 (diff) | |
arm64: dts: ls208xa-rdb: fix errata E-00013
Specify a channel zero in idle state to avoid enterring tri-stated state
for PCA9547.
Some information about E-00013:
- Description: I2C1 and I2C3 buses are missing pull-up.
- Impact: When the PCA954x device is tri-stated, the I2C bus will float.
This makes the I2C bus and its associated downstream devices
inaccessible.
- Hardware fix: Populate resistors R189 and R190 for I2C1 and resistors
R228 and R229 for I2C3.
- Software fix: Remove the tri-state option from the PCA954x
driver(PCA954x always on enable status, specify a channel zero in dts to
fix the errata E-00013).
Signed-off-by: Biwen Li <[email protected]>
Signed-off-by: Li Yang <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions