mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 15:41:36 +00:00
e65e228eb0
This supports property idle-state,if present, overrides i2c-mux-idle-disconnect. My use cases: - Use the property idle-state to fix an errata on LS2085ARDB and LS2088ARDB. - Errata id: E-00013(board LS2085ARDB and LS2088ARDB revision on Rev.B, Rev.C and Rev.D). - 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). Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Biwen Li <biwen.li@nxp.com> Signed-off-by: Peter Rosin <peda@axentia.se> |
||
|---|---|---|
| .. | ||
| i2c-arb-gpio-challenge.c | ||
| i2c-demux-pinctrl.c | ||
| i2c-mux-gpio.c | ||
| i2c-mux-gpmux.c | ||
| i2c-mux-ltc4306.c | ||
| i2c-mux-mlxcpld.c | ||
| i2c-mux-pca954x.c | ||
| i2c-mux-pca9541.c | ||
| i2c-mux-pinctrl.c | ||
| i2c-mux-reg.c | ||
| Kconfig | ||
| Makefile | ||