From: Ken Chalmers Date: Thu, 14 Dec 2017 17:43:41 +0000 (-0500) Subject: drm/amd/display: Fix Maximus pixel clock programming X-Git-Tag: v4.19~1144^2~30^2~322 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=73535feb175d7ec570911b1f00aa11e30cb7e92e;p=platform%2Fkernel%2Flinux-rpi3.git drm/amd/display: Fix Maximus pixel clock programming Maximus testing now defaults to a 700 MHz emulated dispclk Signed-off-by: Ken Chalmers Reviewed-by: Tony Cheng Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- 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 31280d2..5036b67 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);