diff options
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 6 | ||||
| -rw-r--r-- | include/linux/i2c.h | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 5f6a4985f2bc..6a5183cffdfc 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1656,6 +1656,12 @@ void i2c_parse_fw_timings(struct device *dev, struct i2c_timings *t, bool use_de t->sda_fall_ns = t->scl_fall_ns; device_property_read_u32(dev, "i2c-sda-hold-time-ns", &t->sda_hold_ns); + + device_property_read_u32(dev, "i2c-digital-filter-width-ns", + &t->digital_filter_width_ns); + + device_property_read_u32(dev, "i2c-analog-filter-cutoff-frequency", + &t->analog_filter_cutoff_freq_hz); } EXPORT_SYMBOL_GPL(i2c_parse_fw_timings); diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 1361637c369d..aaf57d9b41db 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -575,6 +575,10 @@ struct i2c_lock_operations { * @scl_int_delay_ns: time IP core additionally needs to setup SCL in ns * @sda_fall_ns: time SDA signal takes to fall in ns; t(f) in the I2C specification * @sda_hold_ns: time IP core additionally needs to hold SDA in ns + * @digital_filter_width_ns: width in ns of spikes on i2c lines that the IP core + * digital filter can filter out + * @analog_filter_cutoff_freq_hz: threshold frequency for the low pass IP core + * analog filter */ struct i2c_timings { u32 bus_freq_hz; @@ -583,6 +587,8 @@ struct i2c_timings { u32 scl_int_delay_ns; u32 sda_fall_ns; u32 sda_hold_ns; + u32 digital_filter_width_ns; + u32 analog_filter_cutoff_freq_hz; }; /** |