diff options
Diffstat (limited to 'src/drivers/i2c')
| -rw-r--r-- | src/drivers/i2c/cs42l42/chip.h | 10 | ||||
| -rw-r--r-- | src/drivers/i2c/cs42l42/cs42l42.c | 2 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/drivers/i2c/cs42l42/chip.h b/src/drivers/i2c/cs42l42/chip.h index 5be2e14cd1..1adffe7088 100644 --- a/src/drivers/i2c/cs42l42/chip.h +++ b/src/drivers/i2c/cs42l42/chip.h @@ -106,4 +106,14 @@ struct drivers_i2c_cs42l42_config { uint64_t bias_lvls[4]; /* headset bias ramp rate */ enum cs42l42_hs_bias_ramp_rate hs_bias_ramp_rate; + /* + * cirrus,hs-bias-sense-disable: This is boolean property. If present the + * HSBIAS sense is disabled. Configures HSBIAS output current sense through + * the external 2.21-k resistor. HSBIAS_SENSE is hardware feature to reduce + * the potential pop noise during the headset plug out slowly. But on some + * platforms ESD voltage will affect it causing test to fail, especially + * with CTIA headset type. For different hardware setups, a designer might + * want to tweak default behavior. + */ + bool hs_bias_sense_disable; }; diff --git a/src/drivers/i2c/cs42l42/cs42l42.c b/src/drivers/i2c/cs42l42/cs42l42.c index d2ff6df8a3..a871cfceed 100644 --- a/src/drivers/i2c/cs42l42/cs42l42.c +++ b/src/drivers/i2c/cs42l42/cs42l42.c @@ -87,6 +87,8 @@ static void cs42l42_fill_ssdt(const struct device *dev) acpi_dp_add_integer_array(dsd, "cirrus,bias-lvls", config->bias_lvls, 4); acpi_dp_add_integer(dsd, "cirrus,hs-bias-ramp-rate", config->hs_bias_ramp_rate); + if (config->hs_bias_sense_disable) + acpi_dp_add_integer(dsd, "cirrus,hs-bias-sense-disable", 1); /* Write Device Property Hierarchy */ acpi_dp_write(dsd); |