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ANDROID: GKI: enable CONFIG_MTK_TIMER

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It's needed by MTK board for reasons below:
After working with built-in mtk timer(timer-mediatek) as
tick-broadcast devices for few weeks, we found some issues caused
by linux timer framework:
1. tick broadcast installed by insmod cannot switch to oneshot
   mode correctly (BUG: 161822795)
2. rcu warning will be shown if we force to re-enabled tick-broadcast
for each cpu when new tick broadcast device is added by insmod
(timer-mediatek.c in our case)

Bug: 161675989
Change-Id: If3056df11d8256f2af4a6928820faed9f690b3db
Signed-off-by: Freddy Hsin <freddy.hsin@mediatek.com>
Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
(cherry picked from commit b995c14df40ff1c8d66525eb1133e3f28a759f54)
This commit is contained in:
Chun-Hung Wu 2020-08-27 11:19:09 +08:00 • committed by Greg Kroah-Hartman
commit 14d632886f
2 changed files with 2 additions and 1 deletions
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1
arch/arm64/configs/gki_defconfig
View file

@ -499,6 +499,7 @@ CONFIG_COMMON_CLK_SCPI=y
CONFIG_HWSPINLOCK=y
CONFIG_SUN4I_TIMER=y
# CONFIG_SUN50I_ERRATUM_UNKNOWN1 is not set
CONFIG_MTK_TIMER=y
CONFIG_MAILBOX=y
CONFIG_IOMMU_LIMIT_IOVA_ALIGNMENT=y
CONFIG_REMOTEPROC=y

2
drivers/clocksource/Kconfig
View file

@ -477,7 +477,7 @@ config SYS_SUPPORTS_SH_CMT
bool
config MTK_TIMER
bool "Mediatek timer driver" if COMPILE_TEST
bool "Mediatek timer driver"
depends on HAS_IOMEM
select TIMER_OF
select CLKSRC_MMIO