From: Lee Jones <lee.jones@linaro.org>
To: tony <tony.xie@rock-chips.com>
Cc: heiko@sntech.de, broonie@kernel.org, robh+dt@kernel.org,
mark.rutland@arm.com, a.zummo@towertech.it,
alexandre.belloni@bootlin.com, sboyd@kernel.org,
linux-clk@vger.kernel.org, linux-rtc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, chenjh@rock-chips.com,
xsf@rock-chips.com, zhangqing@rock-chips.com,
huangtao@rock-chips.com
Subject: Re: [PATCH v3 1/5] mfd: rk808: Add RK817 and RK809 support
Date: Tue, 23 Oct 2018 07:26:01 +0100 [thread overview]
Message-ID: <20181023062601.GS4939@dell> (raw)
In-Reply-To: <b0f9fff3-3084-91b3-fa78-5163ebd43bbb@rock-chips.com>
> > > The rk809 and rk817 are a Power Management IC (PMIC) for multimedia
> > > and handheld devices. It contains the following components:
> > >
> > > - Regulators
> > > - RTC
> > > - Clocking
> > >
> > > Both RK809 and RK817 chips are using a similar register map,
> > > so we can reuse the RTC and Clocking and regulators functionality.
> > >
> > > Signed-off-by: Tony Xie <tony.xie@rock-chips.com>
> > > ---
> > > drivers/mfd/Kconfig | 6 +-
> > > drivers/mfd/rk808.c | 218 +++++++++++++++++++++++++++++++++++++++++++++-
> > > include/linux/mfd/rk808.h | 172 ++++++++++++++++++++++++++++++++++++
> > > kernel/reboot.c | 1 +
> > > 4 files changed, 391 insertions(+), 6 deletions(-)
[...]
> > > diff --git a/kernel/reboot.c b/kernel/reboot.c
> > > index e4ced88..83810d7 100644
> > > --- a/kernel/reboot.c
> > > +++ b/kernel/reboot.c
> > > @@ -49,6 +49,7 @@
> > > */
> > > void (*pm_power_off_prepare)(void);
> > > +EXPORT_SYMBOL_GPL(pm_power_off_prepare);
> > Why do you need this where no other driver in the kernel does?
> There is a gpio_slp pin for RK809 and RK817,this pin has reset、power
> down and sleep functions,so
> when system is going to power down, this pin is needed to switch to
> power down function,and then we just only control
> this pin to high to power down the system in atf at last。
There are other PM call-backs that you can use for this. There
shouldn't be any requirement to export and call functions at this
level directly.
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2018-10-23 6:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-24 3:30 [PATCH v3 0/5] support a new type of PMIC,including two chips(rk817 and rk809) Tony Xie
2018-08-24 3:30 ` [PATCH v3 1/5] mfd: rk808: Add RK817 and RK809 support Tony Xie
2018-09-11 11:47 ` Lee Jones
2018-10-23 3:12 ` tony
2018-10-23 6:26 ` Lee Jones [this message]
2018-10-23 7:21 ` tony
2018-08-24 3:30 ` [PATCH v3 2/5] regulator: rk808: add RK809 and RK817 support Tony Xie
2018-08-24 12:23 ` Wadim Egorov
2018-09-03 8:52 ` tony1
2018-08-24 3:30 ` [PATCH v3 3/5] dt-bindings: mfd: rk808: Add binding information for RK809 and RK817 Tony Xie
2018-08-28 22:40 ` Rob Herring
2018-09-11 12:37 ` Lee Jones
2018-08-24 3:30 ` [PATCH v3 4/5] rtc: rk808: add RK809 and RK817 support Tony Xie
2018-08-27 21:14 ` Alexandre Belloni
2018-08-24 3:35 ` Tony Xie
2018-08-24 3:36 ` [PATCH v3 5/5] clk: RK808: " Tony Xie
2018-08-31 17:34 ` Stephen Boyd
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