[PATCH 02/26] drm/amd/display: Fix Maximus pixel clock programming
Harry Wentland
harry.wentland at amd.com
Thu Dec 21 22:07:58 UTC 2017
From: Ken Chalmers <ken.chalmers at amd.com>
Maximus testing now defaults to a 700 MHz emulated dispclk
Signed-off-by: Ken Chalmers <ken.chalmers at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <harry.wentland at amd.com>
---
drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
index 31280d252753..5036b674f68b 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
@@ -908,19 +908,9 @@ static bool dce110_program_pix_clk(
#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
if (IS_FPGA_MAXIMUS_DC(clock_source->ctx->dce_environment)) {
unsigned int inst = pix_clk_params->controller_id - CONTROLLER_ID_D0;
- unsigned dp_dto_ref_kHz = 600000;
- /* DPREF clock from FPGA TODO: Does FPGA have this value? */
+ unsigned dp_dto_ref_kHz = 700000;
unsigned clock_kHz = pll_settings->actual_pix_clk;
- /* For faster simulation, if mode pixe clock less than 290MHz,
- * pixel clock can be hard coded to 290Mhz. For 4K mode, pixel clock
- * is greater than 500Mhz, need real pixel clock
- * clock_kHz = 290000;
- */
- /* TODO: un-hardcode when we can set display clock properly*/
- /*clock_kHz = pix_clk_params->requested_pix_clk;*/
- clock_kHz = 290000;
-
/* Set DTO values: phase = target clock, modulo = reference clock */
REG_WRITE(PHASE[inst], clock_kHz);
REG_WRITE(MODULO[inst], dp_dto_ref_kHz);
--
2.14.1
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