From 7a1bb27b6ba8a05b51c1589dd9d53eb43a9e9843 Mon Sep 17 00:00:00 2001 From: Swapnil Patel Date: Wed, 1 Mar 2023 14:33:33 -0500 Subject: [PATCH] drm/amd/display: Update clock table to include highest clock setting [Why] Currently, the clk manager matches SocVoltage with voltage from fused settings (dfPstate clock table). And then corresponding clocks are selected. However in certain situations, this leads to clk manager not including at least one entry with highest supported clock setting. [How] Update the clk manager to include at least one entry with highest supported clock setting. Reviewed-by: Pavle Kotarac Acked-by: Qingqing Zhuo Signed-off-by: Swapnil Patel Signed-off-by: Alex Deucher --- .../drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c index 24715ca..01383aa 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c @@ -529,6 +529,19 @@ static struct clk_bw_params vg_bw_params = { }; +static uint32_t find_max_clk_value(const uint32_t clocks[], uint32_t num_clocks) +{ + uint32_t max = 0; + int i; + + for (i = 0; i < num_clocks; ++i) { + if (clocks[i] > max) + max = clocks[i]; + } + + return max; +} + static unsigned int find_dcfclk_for_voltage(const struct vg_dpm_clocks *clock_table, unsigned int voltage) { @@ -572,12 +585,16 @@ static void vg_clk_mgr_helper_populate_bw_params( bw_params->clk_table.num_entries = j + 1; - for (i = 0; i < bw_params->clk_table.num_entries; i++, j--) { + for (i = 0; i < bw_params->clk_table.num_entries - 1; i++, j--) { bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[j].fclk; bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[j].memclk; bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[j].voltage; bw_params->clk_table.entries[i].dcfclk_mhz = find_dcfclk_for_voltage(clock_table, clock_table->DfPstateTable[j].voltage); } + bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[j].fclk; + bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[j].memclk; + bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[j].voltage; + bw_params->clk_table.entries[i].dcfclk_mhz = find_max_clk_value(clock_table->DcfClocks, VG_NUM_DCFCLK_DPM_LEVELS); bw_params->vram_type = bios_info->memory_type; bw_params->num_channels = bios_info->ma_channel_number; -- 2.7.4