diff options
| author | Sridevi Arvindekar <sridevi.arvindekar@amd.com> | 2026-08-10 10:55:39 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-08-25 18:30:12 -0400 |
| commit | fc01ce8c85af4f78da448b4d54dd69e17d917c15 (patch) | |
| tree | ee1f2c8fb002807f1413dd6d58f4428183e7cb31 /drivers/gpu/drm/amd/display/dc/gpio | |
| parent | fb1b272dbf4affc410448aca6b221b7c243df4bc (diff) | |
| download | linux-next-fc01ce8c85af4f78da448b4d54dd69e17d917c15.tar.gz linux-next-fc01ce8c85af4f78da448b4d54dd69e17d917c15.zip | |
drm/amd/display: Fixes for HPO test regressions
[Why&How]
Updates and fixes to HPO functionality, initialization, encoder
configuration and platform-specific behavior.
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Sridevi Arvindekar <sridevi.arvindekar@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/gpio')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c index b75bfea635fd..bbfdcfc5b48f 100644 --- a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c @@ -469,10 +469,11 @@ static enum gpio_result dal_hw_ddc_set_config_i3cpad( switch (config_data->config.ddc.type) { /* For ASICs with i3cpad module there is no dual pad mode for i3cpads */ case GPIO_DDC_CONFIG_TYPE_MODE_I2C: - /* Enable the RX for the PAD (it is disabled by default). */ - REG_UPDATE(dc_i3cpad_control1, DC_I3CPAD_RXSEL, 0); - return GPIO_RESULT_OK; case GPIO_DDC_CONFIG_TYPE_MODE_AUX: + /* Enable the RX for the PAD (it is disabled by default). Required for + * both I2C (EDID) and AUX (DPCD); without it the sink reply is never + * received and the transaction times out. */ + REG_UPDATE(dc_i3cpad_control1, DC_I3CPAD_RXSEL, 0); return GPIO_RESULT_OK; case GPIO_DDC_CONFIG_TYPE_POLL_FOR_CONNECT: |