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| author | Johnson Wang <johnson.wang@mediatek.com> | 2022-06-07 22:05:56 +0800 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2022-07-15 11:40:08 +0900 |
| commit | 86d231b1db1be0666c2fc607f5025d63d7afc5f3 (patch) | |
| tree | 8b0af0f6a7e7256dbfc3cc60921fef72a0569d9f /drivers/devfreq/Kconfig | |
| parent | 3be51a3b1980347da7d51f66b1e8e8c538961f17 (diff) | |
| download | lwn-86d231b1db1be0666c2fc607f5025d63d7afc5f3.tar.gz lwn-86d231b1db1be0666c2fc607f5025d63d7afc5f3.zip | |
PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver
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 <jia-wei.chang@mediatek.com>
Signed-off-by: Johnson Wang <johnson.wang@mediatek.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq/Kconfig')
| -rw-r--r-- | drivers/devfreq/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig index 87eb2b837e68..9754d8b31621 100644 --- a/drivers/devfreq/Kconfig +++ b/drivers/devfreq/Kconfig @@ -120,6 +120,16 @@ config ARM_TEGRA_DEVFREQ It reads ACTMON counters of memory controllers and adjusts the operating frequencies and voltages with OPP support. +config ARM_MEDIATEK_CCI_DEVFREQ + tristate "MEDIATEK CCI DEVFREQ Driver" + depends on ARM_MEDIATEK_CPUFREQ || COMPILE_TEST + select DEVFREQ_GOV_PASSIVE + help + This adds a devfreq driver for MediaTek Cache Coherent Interconnect + which is shared the same regulators with the cpu cluster. It can track + buck voltages and update a proper CCI frequency. Use the notification + to get the regulator status. + config ARM_RK3399_DMC_DEVFREQ tristate "ARM RK3399 DMC DEVFREQ Driver" depends on (ARCH_ROCKCHIP && HAVE_ARM_SMCCC) || \ |