From: caesar.upstream@gmail•com (Caesar Wang)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 0/4] Add the OTP gpio pinctrl to fix the TSHUT issue
Date: Tue, 20 Oct 2015 17:15:11 +0800 [thread overview]
Message-ID: <5626061F.6010402@gmail.com> (raw)
In-Reply-To: <1445332264-6054-1-git-send-email-wxt@rock-chips.com>
The subject is deleted by my finger.
? 2015?10?20? 17:11, Caesar Wang ??:
> We need the OTP pin is gpio state before resetting the TSADC controller,
> since the tshut polarity will generate a high signal.
>
> Says:
> The TSHUT temperature is setting more than 80 degree, the default
> tshut polarity is HIGH.
>
> If T > 80C, the OTP output the High Signal.
> If T < 80C, the OTP output the Low Signal.
>
> On the moment, the TSADC controller is reset, the tshut polarity will be
> Low in a short period of time.
>
> So:
> If T < 80C, the OTP output the High Signal.
> If T > 80C, the OTP output the Low Signal.
>
> In some cases, the OTP pin is connected to the PMIC, maybe the PMIC can
> accept the reset response time to avoid this issue.
>
> In other words, the system will be always reboot if we make the OTP pin
> is connected the others IC to control the power.
>
> Tested on box board.
>
>
>
> Caesar Wang (4):
> dt-bindings: Sync the dts to this document
> thermal: rockchip: ensure the otp state before resetting the
> controller
> thermal: rockchip: change the TSHUT default state
> ARM: dts: rockchip: Add the OTP gpio pinctrl
>
> .../bindings/thermal/rockchip-thermal.txt | 5 ++--
> arch/arm/boot/dts/rk3288.dtsi | 9 ++++--
> drivers/thermal/rockchip_thermal.c | 34 +++++++++++++++++++++-
> 3 files changed, 43 insertions(+), 5 deletions(-)
>
--
Thanks,
Caesar
prev parent reply other threads:[~2015-10-20 9:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-20 9:11 [PATCH 0/4] Caesar Wang
2015-10-20 9:11 ` [PATCH 1/4] dt-bindings: Sync the dts to this document Caesar Wang
2015-10-20 9:11 ` [PATCH 2/4] thermal: rockchip: ensure the otp state before resetting the controller Caesar Wang
2015-10-20 15:52 ` Doug Anderson
2015-10-21 1:41 ` Caesar Wang
2015-10-27 10:23 ` Linus Walleij
2015-10-20 9:11 ` [PATCH 3/4] thermal: rockchip: change the TSHUT default state Caesar Wang
2015-10-20 16:01 ` Doug Anderson
[not found] ` <5626EEB2.50101@gmail.com>
2015-10-21 2:14 ` Doug Anderson
2015-10-21 2:16 ` Caesar Wang
2015-10-20 9:11 ` [PATCH 4/4] ARM: dts: rockchip: Add the OTP gpio pinctrl Caesar Wang
2015-10-20 9:15 ` Caesar Wang [this message]
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