linux/drivers/interconnect/Kconfig

# SPDX-License-Identifier: GPL-2.0-only
menuconfig INTERCONNECT
	bool "On-Chip Interconnect management support"
	help
	  Support for management of the on-chip interconnects.

	  This framework is designed to provide a generic interface for
	  managing the interconnects in a SoC.

	  If unsure, say no.

if INTERCONNECT

source "drivers/interconnect/imx/Kconfig"
source "drivers/interconnect/qcom/Kconfig"
source "drivers/interconnect/samsung/Kconfig"

endif
treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-19 12:07:45 +00:00			`# SPDX-License-Identifier: GPL-2.0-only`
interconnect: Add generic on-chip interconnect API This patch introduces a new API to get requirements and configure the interconnect buses across the entire chipset to fit with the current demand. The API is using a consumer/provider-based model, where the providers are the interconnect buses and the consumers could be various drivers. The consumers request interconnect resources (path) between endpoints and set the desired constraints on this data flow path. The providers receive requests from consumers and aggregate these requests for all master-slave pairs on that path. Then the providers configure each node along the path to support a bandwidth that satisfies all bandwidth requests that cross through that node. The topology could be complicated and multi-tiered and is SoC specific. Reviewed-by: Evan Green <evgreen@chromium.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-01-16 16:10:56 +00:00			`menuconfig INTERCONNECT`
interconnect: Disallow interconnect core to be built as a module Building individual drivers as modules is fine but allowing a core framework to be built as a module makes it really complex and should be avoided. Whatever uses the interconnect core APIs must also be built as a module if interconnect core is built as module, else we will see compilation failures. If another core framework (like cpufreq, clk, etc), that can't be built as module, needs to use interconnect APIs then we will start seeing compilation failures with allmodconfig configurations as the symbols (like of_icc_get()) used in other frameworks will not be available in the built-in image. Disallow the interconnect core to be built as a module to avoid all these issues. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/b789cce388dd1f2906492f307dea6780c398bc6a.1567065991.git.viresh.kumar@linaro.org Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> 2019-08-29 08:07:29 +00:00			`bool "On-Chip Interconnect management support"`
interconnect: Add generic on-chip interconnect API This patch introduces a new API to get requirements and configure the interconnect buses across the entire chipset to fit with the current demand. The API is using a consumer/provider-based model, where the providers are the interconnect buses and the consumers could be various drivers. The consumers request interconnect resources (path) between endpoints and set the desired constraints on this data flow path. The providers receive requests from consumers and aggregate these requests for all master-slave pairs on that path. Then the providers configure each node along the path to support a bandwidth that satisfies all bandwidth requests that cross through that node. The topology could be complicated and multi-tiered and is SoC specific. Reviewed-by: Evan Green <evgreen@chromium.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-01-16 16:10:56 +00:00			`help`
			`Support for management of the on-chip interconnects.`

			`This framework is designed to provide a generic interface for`
			`managing the interconnects in a SoC.`

			`If unsure, say no.`

interconnect: qcom: Add sdm845 interconnect provider driver Introduce Qualcomm SDM845 specific provider driver using the interconnect framework. Signed-off-by: David Dai <daidavid1@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-01-16 16:11:00 +00:00			`if INTERCONNECT`

interconnect: Add imx core driver This adds support for i.MX SoC family to interconnect framework. Platform drivers can describe the interconnect graph and several adjustment knobs where icc node bandwidth is converted to a DEV_PM_QOS_MIN_FREQUENCY request. The interconnect provider is probed through the main NOC device and other adjustable nodes on the same graph are found from a fsl,scalable-nodes phandle array property. Signed-off-by: Alexandre Bailon <abailon@baylibre.com> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm> Link: https://lore.kernel.org/r/35920e673df6c04cbbb7d877a7d4ba25fd91a784.1586174566.git.leonard.crestez@nxp.com Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> 2020-04-28 17:03:02 +00:00			`source "drivers/interconnect/imx/Kconfig"`
interconnect: qcom: Add sdm845 interconnect provider driver Introduce Qualcomm SDM845 specific provider driver using the interconnect framework. Signed-off-by: David Dai <daidavid1@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-01-16 16:11:00 +00:00			`source "drivers/interconnect/qcom/Kconfig"`
interconnect: Add generic interconnect driver for Exynos SoCs This patch adds a generic interconnect driver for Exynos SoCs in order to provide interconnect functionality for each "samsung,exynos-bus" compatible device. The SoC topology is a graph (or more specifically, a tree) and its edges are described by specifying in the 'interconnects' property the interconnect consumer path for each interconnect provider DT node. Each bus is now an interconnect provider and an interconnect node as well (cf. Documentation/interconnect/interconnect.rst), i.e. every bus registers itself as a node. Node IDs are not hard coded but rather assigned dynamically at runtime. This approach allows for using this driver with various Exynos SoCs. Frequencies requested via the interconnect API for a given node are propagated to devfreq using dev_pm_qos_update_request(). Please note that it is not an error when CONFIG_INTERCONNECT is 'n', in which case all interconnect API functions are no-op. The samsung,data-clk-ratio DT property is used to specify the ratio of the interconect bandwidth to the minimum data clock frequency for each bus. Due to unspecified relative probing order, -EPROBE_DEFER may be propagated to ensure that the parent is probed before its children. Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Artur Świgoń <a.swigon@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Link: https://lore.kernel.org/r/20201112140931.31139-3-s.nawrocki@samsung.com Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> 2020-11-12 14:09:28 +00:00			`source "drivers/interconnect/samsung/Kconfig"`
interconnect: qcom: Add sdm845 interconnect provider driver Introduce Qualcomm SDM845 specific provider driver using the interconnect framework. Signed-off-by: David Dai <daidavid1@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-01-16 16:11:00 +00:00
			`endif`