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drm/amd/display: Set memclk levels to be at least 1 for dcn32

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[Why]
Cannot report 0 memclk levels even when SMU does not provide any.

[How]
When memclk levels reported by SMU is 0, set levels to 1.

Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x
This commit is contained in:
Dillon Varone 2022-10-20 11:46:48 -04:00 committed by Alex Deucher
parent c580d758ba
commit 6cb5cec16c
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
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@ -669,6 +669,9 @@ static void dcn32_get_memclk_states_from_smu(struct clk_mgr *clk_mgr_base)
&clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz,
&num_entries_per_clk->num_memclk_levels);
/* memclk must have at least one level */
num_entries_per_clk->num_memclk_levels = num_entries_per_clk->num_memclk_levels ? num_entries_per_clk->num_memclk_levels : 1;
dcn32_init_single_clock(clk_mgr, PPCLK_FCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].fclk_mhz,
&num_entries_per_clk->num_fclk_levels);