From: Zeyu Fan <Zeyu.Fan@xxxxxxx>
Change-Id: I816c374dcce253fd81b8614f5ff95bf7792ddc62
Signed-off-by: Zeyu Fan <Zeyu.Fan at amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
---
drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c b/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
index 983645b1be78..45e766ea79e3 100644
--- a/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c
@@ -337,6 +337,9 @@ enum {
DEFAULT_I2C_SW_SPEED = 50,
DEFAULT_I2C_HW_SPEED = 50,
+ DEFAULT_I2C_SW_SPEED_100KHZ = 100,
+ DEFAULT_I2C_HW_SPEED_100KHZ = 100,
+
/* This is the timeout as defined in DP 1.2a,
* 2.3.4 "Detailed uPacket TX AUX CH State Description". */
AUX_TIMEOUT_PERIOD = 400,
@@ -436,8 +439,13 @@ bool dal_i2caux_construct(
i2caux->aux_timeout_period =
SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD;
- i2caux->default_i2c_sw_speed = DEFAULT_I2C_SW_SPEED;
- i2caux->default_i2c_hw_speed = DEFAULT_I2C_HW_SPEED;
+ if (ctx->dce_version >= DCE_VERSION_11_2) {
+ i2caux->default_i2c_hw_speed = DEFAULT_I2C_HW_SPEED_100KHZ;
+ i2caux->default_i2c_sw_speed = DEFAULT_I2C_SW_SPEED_100KHZ;
+ } else {
+ i2caux->default_i2c_hw_speed = DEFAULT_I2C_HW_SPEED;
+ i2caux->default_i2c_sw_speed = DEFAULT_I2C_SW_SPEED;
+ }
return true;
}
--
2.11.0
