diff options
Diffstat (limited to 'src/soc/intel/common/block/i2c/i2c.c')
| -rw-r--r-- | src/soc/intel/common/block/i2c/i2c.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/i2c/i2c.c b/src/soc/intel/common/block/i2c/i2c.c index d551c51abf88..854a61a884a1 100644 --- a/src/soc/intel/common/block/i2c/i2c.c +++ b/src/soc/intel/common/block/i2c/i2c.c @@ -87,6 +87,9 @@ static int lpss_i2c_early_init_bus(unsigned int bus) /* Take device out of reset */ lpss_reset_release(base); + /* Ensure controller is in D0 state */ + lpss_set_power_state(tree_dev, STATE_D0); + /* Initialize the controller */ if (dw_i2c_init(bus, config) < 0) { printk(BIOS_ERR, "I2C%u failed to initialize\n", bus); @@ -162,6 +165,9 @@ static void dw_i2c_device_init(struct device *dev) if (!base_address) return; + /* Ensure controller is in D0 state */ + lpss_set_power_state(dev, STATE_D0); + /* Take device out of reset if its not done before */ if (lpss_is_controller_in_reset(base_address)) lpss_reset_release(base_address); |