diff options
| author | Jingwen Zhu <Jingwen.Zhu@amd.com> | 2025-07-14 16:18:19 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-07-28 16:40:08 -0400 |
| commit | 82139760dcf7829ae2ca3f70442be9b53a0aff40 (patch) | |
| tree | bac7f863b0163e938f6b2d991c332f90520bcb16 | |
| parent | 2681bf4ae8d24df950138b8c9ea9c271cd62e414 (diff) | |
drm/amd/display: Add a config flag for limited_pll_vco
[Why/How]
Added a new config flag to pass to the DMUB during boot.
This workaround will solves black screen issue on reboot.
Reviewed-by: Hansen Dsouza <hansen.dsouza@amd.com>
Signed-off-by: Jingwen Zhu <Jingwen.Zhu@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/dmub_srv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c | 1 |
3 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h index 0bafb6710761..87b761ac3135 100644 --- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h +++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h @@ -316,6 +316,7 @@ struct dmub_srv_hw_params { bool disable_sldo_opt; bool enable_non_transparent_setconfig; bool lower_hbr3_phy_ssc; + bool override_hbr3_pll_vco; }; /** diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h index a89bf08ffd37..e2e5f71c03f2 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -843,7 +843,8 @@ union dmub_fw_boot_options { uint32_t ips_sequential_ono: 1; /**< 1 to enable sequential ONO IPS sequence */ uint32_t disable_sldo_opt: 1; /**< 1 to disable SLDO optimizations */ uint32_t lower_hbr3_phy_ssc: 1; /**< 1 to lower hbr3 phy ssc to 0.125 percent */ - uint32_t reserved : 6; /**< reserved */ + uint32_t override_hbr3_pll_vco: 1; /**< 1 to override the hbr3 pll vco to 0 */ + uint32_t reserved : 5; /**< reserved */ } bits; /**< boot bits */ uint32_t all; /**< 32-bit access to bits */ }; diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c index 3f38db752b84..4777c7203b2c 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c @@ -377,6 +377,7 @@ void dmub_dcn31_enable_dmub_boot_options(struct dmub_srv *dmub, const struct dmu boot_options.bits.dpia_hpd_int_enable_supported = params->dpia_hpd_int_enable_supported; boot_options.bits.power_optimization = params->power_optimization; boot_options.bits.lower_hbr3_phy_ssc = params->lower_hbr3_phy_ssc; + boot_options.bits.override_hbr3_pll_vco = params->override_hbr3_pll_vco; boot_options.bits.sel_mux_phy_c_d_phy_f_g = (dmub->asic == DMUB_ASIC_DCN31B) ? 1 : 0; |