From: "Leo (Hanghong) Ma" hanghong.ma@amd.com

[WHY && HOW] Some DP EDID CTS tests fail due to HPO disable, and we should keep it enable on DCN4 dGPU.

Reviewed-by: Wenjing Liu wenjing.liu@amd.com Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Acked-by: Alex Hung alex.hung@amd.com Signed-off-by: Leo (Hanghong) Ma hanghong.ma@amd.com --- drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 2 ++ drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c | 1 - 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c index 42753f56d31d..79a911e1a09a 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c @@ -408,6 +408,8 @@ void dcn401_init_hw(struct dc *dc) REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0); }

+ dcn401_setup_hpo_hw_control(hws, true); + if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks) dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c index 1cf0608e1980..8159fd838dc3 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c @@ -137,7 +137,6 @@ static const struct hwseq_private_funcs dcn401_private_funcs = { .program_mall_pipe_config = dcn32_program_mall_pipe_config, .update_force_pstate = dcn32_update_force_pstate, .update_mall_sel = dcn32_update_mall_sel, - .setup_hpo_hw_control = dcn401_setup_hpo_hw_control, .calculate_dccg_k1_k2_values = NULL, .apply_single_controller_ctx_to_hw = dce110_apply_single_controller_ctx_to_hw, .reset_back_end_for_pipe = dcn20_reset_back_end_for_pipe,