linux-kernel - [PATCH] ARM: imx_v6_v7_defconfig: Enable cpufreq governors

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Date:   Tue, 2 May 2017 17:46:00 +0300
From:   Leonard Crestez <leonard.crestez@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     Leonard Crestez <leonard.crestez@....com>,
        Sascha Hauer <kernel@...gutronix.de>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Fabio Estevam <fabio.estevam@....com>,
        Dong Aisheng <aisheng.dong@...escale.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] ARM: imx_v6_v7_defconfig: Enable cpufreq governors

Enable more common cpufreq governors in imx defconfig because this is
very useful for testing. In particular you can't use cpufreq-set -f
$FREQ without explicitly defining CONFIG_CPU_FREQ_GOV_USERSPACE=y.

Signed-off-by: Leonard Crestez <leonard.crestez@....com>

---

It might make sense for all governors to be enabled by default from
drivers/cpufreq/Kconfig and allow defconfigs to be shorter.
Right now the descriptions for some of them includes a line that says
"If in doubt, say Y" but the config options don't have actually have a
default value defined and they effectively default to N.

Cycling via savedefconfig on shawnguo/for-next also generates some
reordering for some newly added options CONFIG_TOUCHSCREEN_MAX11801=y
and CONFIG_HID_MULTITOUCH=y. Those were not included but it's strange
that this happens. Maybe those options were inserted manually, or
otherwise there is an annoying bug in kconfig?

 arch/arm/configs/imx_v6_v7_defconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index bb6fa56..bf1e7e3 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -55,6 +55,9 @@ CONFIG_CMDLINE="noinitrd console=ttymxc0,115200"
 CONFIG_KEXEC=y
 CONFIG_CPU_FREQ=y
 CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
 CONFIG_ARM_IMX6Q_CPUFREQ=y
 CONFIG_CPU_IDLE=y
 CONFIG_VFP=y
-- 
2.7.4