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0c2cb3e676
Add clock capping driver which can be used to cap the max freq of the specified clocks via Common Clock Framework (CCF) directly. The exposed sysfs nodes can be used to ensure the clock running within the predefined frequency cap in selected power mode. As bandwidth manager is implemented in BPMP, the EMC max freq capping request should be approved by BPMP. Therefore, there is MRQ call to BPMP when there is new EMC max freq capping request. Please note that the request will be rejected by BPMP when EMC current freq is higher than requested capping freq. On BPMP MRQ failure, the driver will try to restore previous EMC max freq in CCF. On CCF failure, the driver will try to remove the cap on EMC max freq. Bug 3997304 Bug 3972888 Signed-off-by: Yi-Wei Wang <yiweiw@nvidia.com> Change-Id: Iff574ff5e529119c65a9af2456241d9102bd7956 Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2878601 Reviewed-by: Rajkumar Kasirajan <rkasirajan@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
5 lines
145 B
Makefile
5 lines
145 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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obj-m += nvpmodel-clk-cap.o
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