]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
ARM64: dts: meson-gxbb-odroidc2: Disable SCPI DVFS
authorNeil Armstrong <narmstrong@baylibre.com>
Fri, 6 Jan 2017 08:04:32 +0000 (09:04 +0100)
committerOlof Johansson <olof@lixom.net>
Tue, 17 Jan 2017 20:10:54 +0000 (12:10 -0800)
commitf7bcd4b6f6983d668b057dc166799716690423a4
treed38f030f58d6e3494996968499e47804503aa405
parent941d3156e9a5d6826b17d451ccac876aa2f7a0d2
ARM64: dts: meson-gxbb-odroidc2: Disable SCPI DVFS

The current hardware is not able to run with all cores enabled at a
cluster frequency superior at 1536MHz.
But the currently shipped u-boot for the platform still reports an OPP
table with possible DVFS frequency up to 2GHz, and will not change since
the off-tree linux tree supports limiting the OPPs with a kernel parameter.
A recent u-boot change reports the boot-time DVFS around 100MHz and
the default performance cpufreq governor sets the maximum frequency.
Previous version of u-boot reported to be already at the max OPP and
left the OPP as is.
Nevertheless, other governors like ondemand could setup the max frequency
and make the system crash.

This patch disables the DVFS clock and disables cpufreq.

Fixes: 70db166a2baa ("ARM64: dts: meson-gxbb: Add SCPI with cpufreq & sensors Nodes")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi