diff options
| author | Anson Huang <anson.huang@nxp.com> | 2018-12-04 03:17:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-13 10:05:31 +0100 |
| commit | 88206b0e304275c64d98bc26c798ee2299bba8c3 (patch) | |
| tree | d04abc152d12b5514c444221236b3776a44a7dd2 /arch | |
| parent | c7c77cdf7b494ab4a6e92013c7fc5281d0207a86 (diff) | |
ARM: imx: update the cpu power up timing setting on i.mx6sx
[ Upstream commit 1e434b703248580b7aaaf8a115d93e682f57d29f ]
The sw2iso count should cover ARM LDO ramp-up time,
the MAX ARM LDO ramp-up time may be up to more than
100us on some boards, this patch sets sw2iso to 0xf
(~384us) which is the reset value, and it is much
more safe to cover different boards, since we have
observed that some customer boards failed with current
setting of 0x2.
Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-imx/cpuidle-imx6sx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c index 3c6672b3796b..7f5df8992008 100644 --- a/arch/arm/mach-imx/cpuidle-imx6sx.c +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c @@ -97,7 +97,7 @@ int __init imx6sx_cpuidle_init(void) * except for power up sw2iso which need to be * larger than LDO ramp up time. */ - imx_gpc_set_arm_power_up_timing(2, 1); + imx_gpc_set_arm_power_up_timing(0xf, 1); imx_gpc_set_arm_power_down_timing(1, 1); return cpuidle_register(&imx6sx_cpuidle_driver, NULL); |