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It's often useful during test, debug, and development to issue path votes from shell. Add a debugfs client for this purpose. Example usage: cd /sys/kernel/debug/interconnect/test-client/ # Configure node endpoints for the path from CPU to DDR on # qcom/sm8550. echo chm_apps > src_node echo ebi > dst_node # Get path between src_node and dst_node. This is only # necessary after updating the node endpoints. echo 1 > get # Set desired BW to 1GBps avg and 2GBps peak. echo 1000000 > avg_bw echo 2000000 > peak_bw # Vote for avg_bw and peak_bw on the latest path from "get". # Voting for multiple paths is possible by repeating this # process for different nodes endpoints. echo 1 > commit Allowing userspace to directly enable and set bus rates can be dangerous So, following in the footsteps of the regmap [0] and clk [1] frameworks, keep these userspace controls compile-time disabled without Kconfig options to enable them. Enabling this will require code changes to define INTERCONNECT_ALLOW_WRITE_DEBUGFS. [0] commit09c6ecd394("regmap: Add support for writing to regmap registers via debugfs") [1] commit37215da555("clk: Add support for setting clk_rate via debugfs") Signed-off-by: Mike Tipton <quic_mdtipton@quicinc.com> Link: https://lore.kernel.org/r/20230807142914.12480-4-quic_mdtipton@quicinc.com Signed-off-by: Georgi Djakov <djakov@kernel.org>
12 lines
334 B
Makefile
12 lines
334 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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CFLAGS_core.o := -I$(src)
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icc-core-objs := core.o bulk.o debugfs-client.o
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obj-$(CONFIG_INTERCONNECT) += icc-core.o
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obj-$(CONFIG_INTERCONNECT_IMX) += imx/
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obj-$(CONFIG_INTERCONNECT_QCOM) += qcom/
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obj-$(CONFIG_INTERCONNECT_SAMSUNG) += samsung/
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obj-$(CONFIG_INTERCONNECT_CLK) += icc-clk.o
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