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path: root/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
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2025-06-24drm/amd/display: Add num_slices_h to set_dto_dscclk signatureIlya Bakoulin
Add the number of horizontal slices argument to allow configuring clock based on slice number. Reviewed-by: Nevenko Stupar <nevenko.stupar@amd.com> Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com> Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-09-06drm/amd/display: fix dccg root clock optimization related hangQili Lu
[Why] enable dpp rcg before we disable dppclk in hw_init cause system hang/reboot [How] we remove dccg rcg related code from init into a separate function and call it after we init pipe Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Qili Lu <qili.lu@amd.com> Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-07-23drm/amd/display: fix dscclk programming sequence on DCN401Wenjing Liu
[why] The mux to switch between refclk and dto_dsc_clk is non double buffered. However dto dsc clk's phase and modulo divider registers are currently configured as double buffered update. This causes a problem when we switch to use dto dsc clk and program phase and modulo in the same sequence. In this sequence dsc clk is switched to dto but the clock divider programming doesn't take effect until next frame. When we try to program DSCC registers, SMN bus will hang because dto dsc clk divider phase is set to 0. [how] Configure phase and modulo to take effect immediately. Always switch to dto dsc clk before DSC clock is unagted. Switch back to refclk after DSC clock is gated. Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Reviewed-by: Jerry Zuo <jerry.zuo@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-06-05drm/amd/display: Keep VBios pixel rate div setting until next mode setyi-lchen
[why] Vbios & Driver have difference pixel rate div policy. When enabling fast boot & performing blank & unblank w/o timing setting, pixel clock & pixel rate dividor are not match. It would cause too high pixel reate and eDP would be black screen. [How] We would keep pixel rate div setting by Vbios until next timing setting. Reviewed-by: Jun Lei <jun.lei@amd.com> Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Signed-off-by: yi-lchen <yi-lchen@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-13Revert "drm/amd/display: Enable SYMCLK gating in DCCG"Alex Hung
This reverts commit c49e44ede5cdfe650c2f769d8bd58cbe289e87cd. This causes regression on DP link layer test. Reported-by: Mark Broadworth <Mark.Broadworth@amd.com> Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-13drm/amd/display: Enable SYMCLK gating in DCCGDaniel Miess
[WHY & HOW] Enable root clock optimization for SYMCLK and only disable it when it's actively used. Reviewed-by: Charlene Liu <charlene.liu@amd.com> Acked-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Daniel Miess <daniel.miess@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-08drm/amd/display: reset DSC clock in post unlock updateWenjing Liu
[why] Switching between DSC clock or disable DSC block are not double buffered update. Corruption is observed if these updates happen before DSC double buffered disconnection. [how] Move DSC disable and refclk reset to post unlock update. Wait for DSC double buffered disconnection and all mpccs are disconnected before reset DSC clock. Reviewed-by: Samson Tam <samson.tam@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-30drm/amd/display: Revert "dc: Keep VBios pixel rate div setting util next ↵Webb Chen
mode set" This reverts commit 4d4d3ff16db2 ("drm/amd/display: Keep VBios pixel rate div setting util next mode set") which causes issue. Reviewed-by: Charlene Liu <charlene.liu@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Webb Chen <yi-lchen@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-30drm/amd/display: Keep VBios pixel rate div setting util next mode setWebb Chen
[why] VBios & Driver may have differnet pixel rate div policy. If the policy is not same and fast boot is enabled, it would cause the pixel rate is too high after driver only performs stream blank & unblank. [how] We would keep pixel rate div setting by VBios until next mode set. Reviewed-by: Jun Lei <jun.lei@amd.com> Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Webb Chen <yi-lchen@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-09drm/amd/display: Toggle additional RCO options in DCN35Daniel Miess
[Why] With root clock optimization now enabled for DCN35 there are still RCO registers still not being toggled [How] Add in logic to toggle RCO registers for DPPCLK, DPSTREAMCLK and DSCCLK Reviewed-by: Charlene Liu <charlene.liu@amd.com> Acked-by: Roman Li <roman.li@amd.com> Signed-off-by: Daniel Miess <daniel.miess@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-03-20drm/amd/display: add stream clock source to DP DTO paramsDillon Varone
[WHY&HOW] Stream clock source is a required parameter for DP DTO programming. Reviewed-by: Chris Park <chris.park@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Dillon Varone <dillon.varone@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-12-13drm/amd/display: Use explicit size for types in DCCG's struct dp_dto_paramsAurabindo Pillai
Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-12-06drm/amd/display: add support for DTO genarated dscclkWenjing Liu
Current implementation will choose to use refclk as dscclk. This is not recommended by hardware team as refclk is a fixed value which could cause unnecessary power consumption or it could be not enough for large DSC timings. So we are adding new interfaces so we could switch to use dynamically generated DSCCLK by DTO. So DSCCLK is programmable based on current pixel clock and dispclk. Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Reviewed-by: Chaitanya Dhere <chaitanya.dhere@amd.com> Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-11-07drm/amd/display: Enable physymclk RCODaniel Miess
[Why] Enable the last of the RCO options for dcn35 [How] Breakout RCO from dccg35_set_physymclk so that physymclk RCO can be set in dccg_init without disabling physymclk Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Jun Lei <jun.lei@amd.com> Acked-by: Hersen Wu <hersenxs.wu@amd.com> Signed-off-by: Daniel Miess <daniel.miess@amd.com> Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-09-26drm/amd/display: Fix DP2.0 timing syncIlya Bakoulin
[Why] Triggering OTG sync before all OTG/HPO clock programming is complete causes timing sync to fail and a subsequent P-state hang. [How] Move DTB clock programming earlier in the sequence to enable_stream_timing. Reviewed-by: Ariel Bernstein <eric.bernstein@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Ilya Bakoulin <ilya.bakoulin@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-09-11drm/amd/display: add dp dto programming function to dccgDillon Varone
[WHY&HOW] Add support for programming dp dto via dccg. Reviewed-by: Jun Lei <jun.lei@amd.com> Acked-by: Stylon Wang <stylon.wang@amd.com> Signed-off-by: Dillon Varone <dillon.varone@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-08-07drm/amd/display: Fix typo in enable and disable symclk_seTaimur Hassan
[Why & How] Symclk should be based on link_enc_inst, and symclk_fe_sel should be based on stream_enc_inst. Reviewed-by: Charlene Liu <charlene.liu@amd.com> Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Taimur Hassan <syed.hassan@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-08-07drm/amd/display: Add symclk enable/disable during stream enable/disableTaimur Hassan
[Why & How] Using dig_stream_mapper, program symclk_en and symclk_fe_src_sel when enabling or disabling the corresponding stream. Reviewed-by: Charlene Liu <charlene.liu@amd.com> Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Taimur Hassan <syed.hassan@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-07-18drm/amd/display: Fix DP2 link training failure with RCODaniel Miess
[Why] When RCO is enabled for symclk32_le we get failures during DP2 link traing compliance tests. [How] Break out symclk32_le RCO into a separate function that is called for hpo when link is enabled/disabled. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Acked-by: Alan Liu <haoping.liu@amd.com> Signed-off-by: Daniel Miess <daniel.miess@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-06-15drm/amd/display: Skip DPP DTO update if root clock is gatedNicholas Kazlauskas
[Why] Hardware implements root clock gating by utilizing the DPP DTO registers with a special case of DTO enabled, phase = 0, modulo = 1. This conflicts with our policy to always update the DPPDTO for cases where it's expected to be disabled. The pipes unexpectedly enter a higher power state than expected because of this programming flow. [How] Guard the upper layers of HWSS against this hardware quirk with programming the register with an internal state flag in DCCG. While technically acting as global state for the DCCG, HWSS shouldn't be expected to understand the hardware quirk for having DTO disabled causing more power than DTO enabled with this specific setting. This also prevents sequencing errors from occuring in the future if we have to program DPP DTO in multiple locations. Acked-by: Stylon Wang <stylon.wang@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Jun Lei <jun.lei@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-06-09drm/amd/display: Trigger DIO FIFO resync on commit streamsSaaem Rizvi
[WHY] Currently, there is an intermittent issue where a screen can either go blank or be corrupted. [HOW] To resolve the issue we trigger the ramping logic for DIO FIFO so that it goes back up to the correct speed. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Saaem Rizvi <syedsaaem.rizvi@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-31drm/amd/display: Fix 4to1 MPC black screen with DPP RCONicholas Kazlauskas
[Why] DPP Root clock optimization when combined with 4to1 MPC combine results in the screen turning black. This is because the DPPCLK is stopped during the middle of an optimize_bandwidth sequence during commit_minimal_transition without going through plane power down/power up. [How] The intent of a 0Hz DPP clock through update_clocks is to disable the DTO. This differs from the behavior of stopping the DPPCLK entirely (utilizing a 0Hz clock on some ASIC) so it's better to move this logic to reside next to plane power up/power down where we gate the HUBP/DPP DOMAIN. The new sequence should be: Power down: PG enabled -> RCO on Power up: RCO off -> PG disabled Rename power_on_plane to power_on_plane_resources to reflect the actual operation that's occurring. Cc: stable@vger.kernel.org Cc: Mario Limonciello <mario.limonciello@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-07-25drm/amd/display: Fix dpstreamclk programmingMichael Strauss
[WHY] Currently programming incorrect hpo inst as well as selecting incorrect source [HOW] Use hpo inst instead of otg inst to select dpstreamclk inst Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Michael Strauss <michael.strauss@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-07drm/amd/display: Add HDMI member to DTOChris Park
[Why] For Pixel Rate control, when on HDMI, HDMI DTO should be selected instead of DP DTO. [How] Add HDMI member to dtbclk_dto_params, so it can be used tell apart HDMI and DP DTO in the future. Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com> Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Chris Park <chris.park@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-03drm/amd/display: Implement DTBCLK ref switching on dcn32Alvin Lee
[WHY & HOW] Implements DTB ref clock switching with reg key default to OFF. Refactors dccg DTBCLK logic to not store redundant state information dccg. Also removes duplicated functions that should be inherited from other dcn versions. Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-03drm/amd/display: add new pixel rate programmingJun Lei
[why] New dividers in DCCG need to be programmed depending on encoder/stream type since pixels per clock in OTG/DIO is different DIO also needs additional programming depending on pixels per clock Signed-off-by: Jun Lei <Jun.Lei@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
2022-06-03drm/amd/display: Use DTBCLK for valid pixel clockEric Bernstein
Use DTBCLK for valid pixel clock generation Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Acked-by: Jerry Zuo <jerry.zuo@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-03drm/amd/display: Add dependant changes for DCN32/321Aurabindo Pillai
[Why&How] This patch adds necessary changes needed in DC files outside DCN32/321 specific tree v2: squash in updates (Alex) Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-03drm/amdgpu/display: Prepare for new interfacesLeung, Martin
why: lut pipeline will be hooked up differently in some asics need to add new interfaces how: add them Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Martin <martin.leung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-01drm/amd/display: Wait DMCUB to idle state before reset.hengzhou
[WHY] Very low rate to cause memory access issue while resetting DMCUB after the halt command was sent to it. The process of stopping fw of DMCUB may be timeout, that means it is not in idle state, such as the window frames may still be kept in cache, so reset by force will cause MMHUB hang. [HOW] After the halt command was sent, keep checking the DMCUB state until it is idle. Reviewed-by: Eric Yang <Eric.Yang2@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: hengzhou <Hengyong.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-01drm/amd/display: Pass the new context into disable OTG WANicholas Kazlauskas
[Why] When enabling an HPO stream for the first time after having previously enabled a DIO stream there may be lingering DIO FIFO errors even though the DIO is no longer enabled. These can cause display clock change to hang if we don't apply the OTG disable workaround since the ramping logic is tied to OTG on. [How] The workaround wasn't being applied in the sequence of: 1 DIO stream 0 streams 1 HPO stream because current_state has no stream or planes in its context - and it's only swapped after optimize has finished. We should be using the incoming context instead to determine whether this logic is needed or not. Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-01drm/amd/display: revert Blank eDP on disable/enable drvLeung, Martin
why and how: Revert this change. It was causing a black screen with certain blocks Reviewed-by: George Shen <George.Shen@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Leung, Martin <Martin.Leung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-01-25drm/amd/display: Drop DCN for DP2.x logicWenjing Liu
[Why & How] DCN guard is not necessary for DP2.x relevant logic. Drop them. v2: squash in fix for misplaced #endif (Alex) Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Reviewed-by: Jerry Zuo <Jerry.Zuo@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-10-19drm/amd/display: Disable dsc root clock when not being usedJake Wang
[Why & How] Disable root clock for dsc when not being used. Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com> Acked-by: Agustin Gutierrez Sanchez <agustin.gutierrez@amd.com> Signed-off-by: Jake Wang <haonan.wang2@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-09-01drm/amd/display: Add DP 2.0 DCCGFangzhi Zuo
HW Blocks: +--------+ +-----+ +------+ | OPTC | | HDA | | HUBP | +--------+ +-----+ +------+ | | | | | | HPO ====|==========|========|==== | | v | | | +-----+ | | | | APG | | | | +-----+ | | | | | | v v v | +---------------------+ | | HPO Stream Encoder | | +---------------------+ | | | v | +--------------------+ | | HPO Link Encoder | | +--------------------+ | | v ===============|============= v +------------------+ | DIO Output Mux | +------------------+ | v +-----+ | PHY | +-----+ | PHYD32CLK[0] v +------+ | DCCG | +------+ | v SYMCLK32 Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-06-22drm/amdgpu/display: fold DRM_AMD_DC_DCN3_1 into DRM_AMD_DC_DCNAlex Deucher
No need for a separate flag now that DCN3.1 is not in bring up. Fold into DRM_AMD_DC_DCN like previous DCN IPs. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-06-08drm/amd/display: Add interface for ADD & DROP PIXEL RegistersWesley Chalmers
[WHY] HW has handed down a new sequence that requires access to these registers. v2: squash in DCN3.1 fixes (Alex) Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Stylon Wang <stylon.wang@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-06-08drm/amd/display: Add Interface to set FIFO ERRDET SW OverrideWesley Chalmers
[WHY] HW has handed down a new sequence which requires access to the FIFO ERRDET SW Override register. Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Stylon Wang <stylon.wang@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-06-04drm/amd/display: Add DCN3.1 DCCGNicholas Kazlauskas
Add programming of the DCCG (Display Controller Clock Generator) block: HW Blocks: +--------+ | DCCG | +--------+ Acked-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-03-19drm/amd/display: DPP DTO isn't update properly.Yongqiang Sun
[Why] before update dpp DTO, we check dppclks in context to determine it is changed or not, but dppclks in context will be updated anyways after flip is done, so compare dppclks in context will always get an equal result. [How] Add pipe dpp clks in dccg and compare values between dccg and context. Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-03drm/amd/display: Revert fixup DPP programming sequenceWesley Chalmers
[WHY] This change was made because DTO programming was double-buffered, which is itself an issue. After deactivating the DTO double buffer, this change becomes unnecessary. Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-15drm/amd/display: fixup DPP programming sequenceJun Lei
[why] DC does not correct account for the fact that DPP DTO is double buffered while DPP ref is not. This means that when DPP ref clock is lowered when it's "safe to lower", the DPP blocks that need an increased divider will temporarily have actual DPP clock drop below minimum while DTO double buffering takes effect. This results in temporary underflow. [how] To fix this, DPP clock cannot be programmed atomically, but rather be broken up into the DTO and the ref. Each has a separate "safe to lower" logic. When doing "prepare" the ref and dividers may only increase. When doing "optimize", both may decrease. It is guaranteed that we won't exceed max DPP clock because we do not use dividers larger than 1. Signed-off-by: Jun Lei <Jun.Lei@amd.com> Reviewed-by: Eric Yang <eric.yang2@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Create clock funcsEryk Brol
Create dccg_init and init_clocks for future use Signed-off-by: Eryk Brol <eryk.brol@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19drm/amd/display: fix up reference clock abstractionsJun Lei
[why] "reference clock" is a very overloaded variable in DC and causes confusion as there are multiple sources of reference clock, which may be different values incorrect input values to DML will cause DCHUB to be programmed improperly and lead to hard to debug underflow issues [how] instead of using ref clock everywhere, specify WHICH ref clock: - xtalin - dccg refclk - dchub refclk these are all distinct values which may not be equal Signed-off-by: Jun Lei <Jun.Lei@amd.com> Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com> Acked-by: David Francis <David.Francis@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amd/display: add dccg blockDmytro Laktyushkin
This adds the hw block as well as hooks up dppclk dto programming Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amd/display: rename dccg to clk_mgrDmytro Laktyushkin
In preparation for adding the actual dccg block since the current implementation of dccg is mor eof a clock manager than a hw block Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-11-05drm/amd/display: split dccg clock manager into asic foldersDmytro Laktyushkin
Currently dccg contains code related to every dcn revision in a single file. This change splits out the dcn parts of code into correct folders Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-31 11:56:30 +0000