diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/lpss_i2c.c | 9 | ||||
| -rw-r--r-- | src/soc/intel/common/lpss_i2c.h | 1 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/soc/intel/common/lpss_i2c.c b/src/soc/intel/common/lpss_i2c.c index 8dfa3af365..19fda4c703 100644 --- a/src/soc/intel/common/lpss_i2c.c +++ b/src/soc/intel/common/lpss_i2c.c @@ -527,6 +527,7 @@ static int lpss_i2c_gen_config_rise_fall_time(struct lpss_i2c_regs *regs, const struct soc_clock *soc; int fall_cnt, rise_cnt, min_tlow_cnt, min_thigh_cnt, spk_cnt; int hcnt, lcnt, period_cnt, diff, tot; + int data_hold_time_ns; bus = get_bus_descriptor(speed); soc = get_soc_descriptor(ic_clk); @@ -591,7 +592,13 @@ static int lpss_i2c_gen_config_rise_fall_time(struct lpss_i2c_regs *regs, config->speed = speed; config->scl_lcnt = lcnt; config->scl_hcnt = hcnt; - config->sda_hold = counts_from_time(&soc->freq, DEFAULT_SDA_HOLD_TIME); + + /* Use internal default unless other value is specified. */ + data_hold_time_ns = DEFAULT_SDA_HOLD_TIME; + if (bcfg->data_hold_time_ns) + data_hold_time_ns = bcfg->data_hold_time_ns; + + config->sda_hold = counts_from_time(&soc->freq, data_hold_time_ns); printk(LPSS_DEBUG, "lpss_i2c: hcnt = %d lcnt = %d sda hold = %d\n", hcnt, lcnt, config->sda_hold); diff --git a/src/soc/intel/common/lpss_i2c.h b/src/soc/intel/common/lpss_i2c.h index dbfabf3631..b9517701f6 100644 --- a/src/soc/intel/common/lpss_i2c.h +++ b/src/soc/intel/common/lpss_i2c.h @@ -61,6 +61,7 @@ struct lpss_i2c_bus_config { * precedence. */ int rise_time_ns; int fall_time_ns; + int data_hold_time_ns; /* Specific bus speed configuration */ struct lpss_i2c_speed_config speed_config[LPSS_I2C_SPEED_CONFIG_COUNT]; }; |