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authorDavid Nieto <dmartineznie@nvidia.com>2016-11-04 01:01:32 -0400
committerDeepak Nibade <dnibade@nvidia.com>2016-12-27 04:56:52 -0500
commit2f258670e40be1c92ab57b6fe77908add768ad9d (patch)
tree77e4fe65923a4e6667ac6956d1e2de158655c5e8 /drivers/gpu/nvgpu/pstate
parent2ebf09920755daeb7e1be71bf317f88ec9d533e1 (diff)
gpu: nvgpu: p-state bound arbiter
Modification of the ARBITER clocks to be P-State aware Up to now the arbiter just considered the whole range of the GPC and MCLK domains, which could end up on illegal combinations of MCLK, GPC2CLK, and set the SYSCLK and XBARCLK domains below their minimum VCO The following has been implemented: (1) Modified VF tables to add which PState are supported on each point. (2) Return and store the current PState on the arbiter state. (3) Modified logic to prevent illegal combinations of MCLK and GPC2CLK. (4) Modified logic to prevent setting VF points for XBAR and SYS domains below VCO limits. (5) Modified voltage calculation to account for increased values of XBAR and SYS on some VF points. (6) Modified arbiter clock target logic to prevent an application that has not requested a particular VF point to set target to default targets. (7) Remove unnecesary mutexes from critical path JIRA DNVGPU-182 JIRA DNVGPU-183 Change-Id: I3d1c30903278f848681b8da833a867835acc99bb Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: http://git-master/r/1247937 (cherry picked from commit b8bcc07eb3b5b70ec1ee19ace237df99d6170138) Reviewed-on: http://git-master/r/1268063 Tested-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/pstate')
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