kernel/linux.git/Documentation/devicetree/bindings/devfreq, branch v6.19.11

dt-bindings: devfreq: tegra30-actmon: Add Tegra124 fallback for Tegra210

2025-11-14T17:00:47+00:00

The Tegra210 actmon is compatible with the existing Tegra124 driver. Describe the compatibles as such. Acked-by: Chanwoo Choi Reviewed-by: Krzysztof Kozlowski Signed-off-by: Aaron Kling Signed-off-by: Thierry Reding

dt-bindings: devfreq: event: rockchip,dfi: Add rk3588 support

2023-10-19T12:27:11+00:00

This adds rockchip,rk3588-dfi to the list of compatibles. Unlike ealier SoCs the rk3588 has four interrupts (one for each channel) instead of only one, so increase the number of allowed interrupts to four. Link: https://lore.kernel.org/all/20231018061714.3553817-23-s.hauer@pengutronix.de/ Acked-by: Conor Dooley Acked-by: Chanwoo Choi Signed-off-by: Sascha Hauer Signed-off-by: Chanwoo Choi

dt-bindings: devfreq: event: rockchip,dfi: Add rk3568 support

2023-10-19T12:25:50+00:00

This adds the rockchip,rk3568-dfi compatible to the binding. Make clocks optional for this SoC as the RK3568 doesn't have a kernel controllable PCLK. Link: https://lore.kernel.org/all/20231018061714.3553817-22-s.hauer@pengutronix.de/ Reviewed-by: Conor Dooley Acked-by: Chanwoo Choi Signed-off-by: Sascha Hauer Signed-off-by: Chanwoo Choi

dt-bindings: devfreq: event: convert Rockchip DFI binding to yaml

2023-10-19T12:24:26+00:00

Convert the Rockchip DFI binding to yaml. Link: https://lore.kernel.org/all/20231018061714.3553817-21-s.hauer@pengutronix.de/ Reviewed-by: Rob Herring Reviewed-by: Sebastian Reichel Acked-by: Chanwoo Choi Signed-off-by: Sascha Hauer Signed-off-by: Chanwoo Choi

dt-bindings: Fix typos

2023-08-18T16:32:25+00:00

Fix typos in Documentation/devicetree/bindings. The changes are in descriptions or comments where they shouldn't affect functionality. Signed-off-by: Bjorn Helgaas Link: https://lore.kernel.org/r/20230814212822.193684-3-helgaas@kernel.org Signed-off-by: Rob Herring

dt-bindings: interconnect: samsung,exynos-bus: convert to dtschema

2022-07-15T02:40:08+00:00

Convert the Samsung Exynos SoC Bus and Interconnect bindings to DT schema. Vast parts of descritpion and example were copied, so keep license as GPL-2.0-only. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Chanwoo Choi

Merge tag 'devfreq-next-for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux

2022-05-18T18:55:34+00:00

Pull devfreq changes for 5.19-rc1 from Chanwoo Choi: "1. Update devfreq core - Add cpu based scaling support to passive governor. Some device like cache might require the dynamic frequency scaling. But, it has very tightly to cpu frequency. So that use passive governor to scale the frequency according to current cpu frequency. To decide the frequency of the device, the governor does one of the following: : Derives the optimal devfreq device opp from required-opps property of the parent cpu opp_table. : Scales the device frequency in proportion to the CPU frequency. So, if the CPUs are running at their max frequency, the device runs at its max frequency. If the CPUs are running at their min frequency, the device runs at its min frequency. It is interpolated for frequencies in between. 2. Update devfreq drivers - Update rk3399_dmc.c as following: : Convert dt-binding document to YAML and deprecate unused properties. : Use Hz units for the device-tree properties of rk3399_dmc. : rk3399_dmc is able to set the idle time before changing the dmc clock. Specify idle time parameters by using nano-second unit on dt bidning. : Add new disable-freq properties to optimize the power-saving feature of rk3399_dmc. : Disable devfreq-event device on remove() to fix unbalanced enable-disable count. : Use devm_pm_opp_of_add_table() : Block PMU (Power-Management Unit) transitions when scaling frequency by ARM Trust Firmware in order to fix the conflict between PMU and DMC (Dynamic Memory Controller)." * tag 'devfreq-next-for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux: PM / devfreq: passive: Keep cpufreq_policy for possible cpus PM / devfreq: passive: Reduce duplicate code when passive_devfreq case PM / devfreq: Add cpu based scaling support to passive governor PM / devfreq: Export devfreq_get_freq_range symbol within devfreq PM / devfreq: rk3399_dmc: Block PMU during transitions soc: rockchip: power-domain: Manage resource conflicts with firmware PM / devfreq: rk3399_dmc: Avoid static (reused) profile PM / devfreq: rk3399_dmc: Use devm_pm_opp_of_add_table() PM / devfreq: rk3399_dmc: Disable edev on remove() PM / devfreq: rk3399_dmc: Support new *-ns properties PM / devfreq: rk3399_dmc: Support new disable-freq properties PM / devfreq: rk3399_dmc: Use bitfield macro definitions for ODT_PD PM / devfreq: rk3399_dmc: Drop excess timing properties PM / devfreq: rk3399_dmc: Drop undocumented ondemand DT props dt-bindings: devfreq: rk3399_dmc: Add more disable-freq properties dt-bindings: devfreq: rk3399_dmc: Specify idle params in nanoseconds dt-bindings: devfreq: rk3399_dmc: Fix Hz units dt-bindings: devfreq: rk3399_dmc: Deprecate unused/redundant properties dt-bindings: devfreq: rk3399_dmc: Convert to YAML

dt-bindings: devfreq: rk3399_dmc: Convert to YAML

2022-04-13T22:18:05+00:00

I want to add, deprecate, and bugfix some properties, as well as add the first users. This is easier with a proper schema. The transformation is mostly straightforward, plus a few notable tweaks: * Renamed rockchip,dram_speed_bin to rockchip,ddr3_speed_bin. The driver code and the example matched, but the description was different. I went with the implementation. Note that this property is also slated for deprecation/deletion in the subsequent patches. * Drop upthreshold and downdifferential properties from the example. These were undocumented (so, wouldn't pass validation), but were representing software properties (governor tweaks). I drop them from the driver in subsequent patches. * Rename clock from pclk_ddr_mon to dmc_clk. The driver, DT example, and all downstream users matched -- the binding definition was the exception. Anyway, "dmc_clk" is a more appropriately generic name. * Choose a better filename and location (this is a memory controller). Signed-off-by: Brian Norris Reviewed-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Signed-off-by: Chanwoo Choi

dt-bindings: update Krzysztof Kozlowski's email

2022-04-04T13:43:20+00:00

Krzysztof Kozlowski's @canonical.com email stopped working, so switch to generic @kernel.org account for all Devicetree bindings. Signed-off-by: Krzysztof Kozlowski Acked-by: Rob Herring Acked-by: Arnd Bergmann Link: https://lore.kernel.org/r/20220330074016.12896-2-krzysztof.kozlowski@linaro.org

dt-bindings: devfreq: rk3399_dmc: fix clocks in example

2021-10-12T01:04:48+00:00

The clocks in the example use 'SCLK_DDRCLK', which does not exist in the rk3399-cru.h, correct it to 'SCLK_DDRC'. Ref: commit 7fbdfcd68783 ("clk: rockchip: add SCLK_DDRC id for rk3399 ddrc") Fixes: c1ceb8f7c167 ("Documentation: bindings: add dt documentation for rk3399 dmc") Signed-off-by: Chukun Pan Link: https://lore.kernel.org/r/20211001150024.18672-1-amadeus@jmu.edu.cn Signed-off-by: Rob Herring