arm64: dts: meson: remove CPU opps below 1GHz for G12B boards
authorChristian Hewitt <christianshewitt@gmail.com>
Thu, 10 Feb 2022 10:06:37 +0000 (10:06 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 9 May 2022 07:16:17 +0000 (09:16 +0200)
commit23c7529c6777cf9e00943ce02565eefba8086c9a
tree5176030a07c34e0f5c1d959f9e2bffcc0c86cdab
parent895ea8a290ba87850bcaf2ecfcddef75a014fa54
arm64: dts: meson: remove CPU opps below 1GHz for G12B boards

[ Upstream commit 6c4d636bc00dc17c63ffb2a73a0da850240e26e3 ]

Amlogic G12B devices experience CPU stalls and random board wedges when
the system idles and CPU cores clock down to lower opp points. Recent
vendor kernels include a change to remove 100-250MHz and other distro
sources also remove the 500/667MHz points. Unless all 100-667Mhz opps
are removed or the CPU governor forced to performance stalls are still
observed, so let's remove them to improve stability and uptime.

Fixes: b96d4e92709b ("arm64: dts: meson-g12b: support a311d and s922x cpu operating points")
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220210100638.19130-2-christianshewitt@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi