kernel/linux.git/drivers/devfreq/Kconfig, branch v6.12.80

PM / devfreq: Remove "select SRCU"

2023-03-13T10:36:15+00:00

Now that the SRCU Kconfig option is unconditionally selected, there is no longer any point in selecting it. Therefore, remove the "select SRCU" Kconfig statements. Signed-off-by: Paul E. McKenney Signed-off-by: Chanwoo Choi

PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver

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

We introduce a devfreq driver for the MediaTek Cache Coherent Interconnect (CCI) used by some MediaTek SoCs. In this driver, we use the passive devfreq driver to get target frequencies and adjust voltages accordingly. In MT8183 and MT8186, the MediaTek CCI is supplied by the same regulators with the little core CPUs. Signed-off-by: Jia-Wei Chang Signed-off-by: Johnson Wang Acked-by: Chanwoo Choi Tested-by: Kevin Hilman Signed-off-by: Chanwoo Choi

PM / devfreq: sun8i: addd COMMON_CLK dependency

2021-12-16T02:19:34+00:00

Compile-testing the driver without CONFIG_COMMON_CLK causes a link failure: arm-linux-gnueabi-ld: drivers/devfreq/sun8i-a33-mbus.o: in function `sun8i_a33_mbus_remove': sun8i-a33-mbus.c:(.text+0x450): undefined reference to `clk_rate_exclusive_put' arm-linux-gnueabi-ld: sun8i-a33-mbus.c:(.text+0x460): undefined reference to `clk_rate_exclusive_put' arm-linux-gnueabi-ld: drivers/devfreq/sun8i-a33-mbus.o: in function `sun8i_a33_mbus_probe': sun8i-a33-mbus.c:(.text+0x85c): undefined reference to `clk_rate_exclusive_get' arm-linux-gnueabi-ld: sun8i-a33-mbus.c:(.text+0x878): undefined reference to `clk_rate_exclusive_get' Fixes: 8bfd4858b4bb ("PM / devfreq: Add a driver for the sun8i/sun50i MBUS") Signed-off-by: Arnd Bergmann Signed-off-by: Chanwoo Choi

PM / devfreq: Add a driver for the sun8i/sun50i MBUS

2021-12-10T06:56:07+00:00

This driver works by adjusting the divider on the DRAM controller's module clock. Thus there is no fixed set of OPPs, only "full speed" down to "quarter speed" (or whatever the maximum divider is on that variant). It makes use of the MDFS hardware in the MBUS, in "DFS" mode, which takes care of updating registers during the critical section while DRAM is inaccessible. This driver should support several sunxi SoCs, starting with the A33, which have a DesignWare DDR3 controller with merged PHY register space and the matching MBUS register layout (so not A63 or later). However, the driver has only been tested on the A64/H5, so those are the only compatibles enabled for now. Acked-by: Chanwoo Choi Signed-off-by: Samuel Holland Signed-off-by: Chanwoo Choi

PM / devfreq: imx8m-ddrc: Remove DEVFREQ_GOV_SIMPLE_ONDEMAND dependency

2021-05-21T04:16:21+00:00

The driver can't support simple ondemand governor due to missing .get_dev_status() capability. Signed-off-by: Dong Aisheng Signed-off-by: Chanwoo Choi

PM / devfreq: Fix the wrong set_freq path for userspace governor in Kconfig

2021-04-08T04:14:50+00:00

Fix the wrong set_freq path for userspace governor in Kconfig. Signed-off-by: Dong Aisheng Signed-off-by: Chanwoo Choi

PM / devfreq: tegra20: Deprecate in a favor of emc-stat based driver

2020-11-23T07:01:13+00:00

Remove tegra20-devfreq in order to replace it with a EMC_STAT based devfreq driver. Previously we were going to use MC_STAT based tegra20-devfreq driver because EMC_STAT wasn't working properly, but now that problem is resolved. This resolves complications imposed by the removed driver since it was depending on both EMC and MC drivers simultaneously. Acked-by: Chanwoo Choi Signed-off-by: Dmitry Osipenko Signed-off-by: Chanwoo Choi

PM / devfreq: tegra20: Relax Kconfig dependency

2020-10-26T03:15:43+00:00

The Tegra EMC driver now could be compiled as a loadable kernel module. Currently devfreq driver depends on the EMC/MC drivers in Kconfig, and thus, devfreq is forced to be a kernel module if EMC is compiled as a module. This build dependency could be relaxed since devfreq driver checks MC/EMC presence on probe, allowing kernel configuration where devfreq is a built-in driver and EMC driver is a loadable module. This change puts Tegra20 devfreq Kconfig entry on a par with the Tegra30 devfreq entry. Acked-by: Chanwoo Choi Signed-off-by: Dmitry Osipenko Signed-off-by: Chanwoo Choi

PM / devfreq: Add generic imx bus scaling driver

2020-05-28T09:02:39+00:00

Add initial support for dynamic frequency switching on pieces of the imx interconnect fabric. All this driver does is set a clk rate based on an opp table, it does not map register areas. Signed-off-by: Leonard Crestez Tested-by: Martin Kepplinger Acked-by: Chanwoo Choi Signed-off-by: Chanwoo Choi

PM / devfreq: exynos: Rename Exynos to lowercase

2020-01-06T01:50:09+00:00

Fix up inconsistent usage of upper and lowercase letters in "Exynos" name. "EXYNOS" is not an abbreviation but a regular trademarked name. Therefore it should be written with lowercase letters starting with capital letter. The lowercase "Exynos" name is promoted by its manufacturer Samsung Electronics Co., Ltd., in advertisement materials and on website. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Chanwoo Choi