From mboxrd@z Thu Jan 1 00:00:00 1970 From: smbarber@chromium.org (Stephen Barber) Date: Thu, 28 Jul 2016 14:53:28 -0700 Subject: [PATCH 2/2] thermal: rockchip: optimize sensor auto accessing period In-Reply-To: <1469628643-29661-2-git-send-email-wxt@rock-chips.com> References: <1469628643-29661-1-git-send-email-wxt@rock-chips.com> <1469628643-29661-2-git-send-email-wxt@rock-chips.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jul 27, 2016 at 7:10 AM, Caesar Wang wrote: > From: Rocky Hao > > In less than 10 ms, the temperature of soc will arise 10 degree. 250 ms > is too big for soc tempeture control. Setting 2.5 ms will speed up > temperature accessing speed but introduce no more cpu's computing overhead. > We set AUTO_PERIOD_TIME and TSADCV3_AUTO_PERIOD_HT_TIME the same value, > because normal temperature update speed is also our consern in IPA. > > Signed-off-by: Rocky Hao > Signed-off-by: Caesar Wang > Cc: Zhang Rui > Cc: Eduardo Valentin > Cc: Heiko Stuebner > Cc: linux-pm at vger.kernel.org > > --- > > drivers/thermal/rockchip_thermal.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c > index a90423d..1f165c9 100644 > --- a/drivers/thermal/rockchip_thermal.c > +++ b/drivers/thermal/rockchip_thermal.c > @@ -213,8 +213,8 @@ struct rockchip_thermal_data { > #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4 > #define TSADCV2_AUTO_PERIOD_TIME 250 /* 250ms */ > #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* 50ms */ > -#define TSADCV3_AUTO_PERIOD_TIME 187500 /* 250ms */ > -#define TSADCV3_AUTO_PERIOD_HT_TIME 37500 /* 50ms */ > +#define TSADCV3_AUTO_PERIOD_TIME 1875 /* 2.5ms */ > +#define TSADCV3_AUTO_PERIOD_HT_TIME 1875 /* 2.5ms */ > > #define TSADCV2_USER_INTER_PD_SOC 0x340 /* 13 clocks */ > > -- > 1.9.1 > Tested-by: Stephen Barber Steve