From mboxrd@z Thu Jan 1 00:00:00 1970 From: l.stach@pengutronix.de (Lucas Stach) Date: Mon, 06 Aug 2018 18:49:32 +0200 Subject: [PATCH v8 1/6] ARM: imx6q: provide documentation for new fsl,pmic-stby-poweroff property In-Reply-To: References: <20180726092220.17250-1-o.rempel@pengutronix.de> <20180726092220.17250-2-o.rempel@pengutronix.de> <84c1921c-922e-4b5d-b688-db89047fa1db@pengutronix.de> <1532680211.32306.36.camel@pengutronix.de> <02f4b642-14a8-f2db-ea23-c42a4f6f1652@pengutronix.de> Message-ID: <1533574172.2809.11.camel@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Am Montag, den 06.08.2018, 02:34 +0000 schrieb Robin Gong: > > > > Not all boards follow the reference design, that's a fact of > > > > life. > > > > > > > > Please look at the i.MX6Q reference manual. The sequence > > > > implemented > > > > in this patchset can be found as a valid way to power off the > > > > system > > > > in > > > > "60.4.3 Power mode transitions" "Normal ON to OFF with external > > > > PMIC", so there is hardly any way to argue that this is a board > > > > specific quirk. This is one of the Freescale/NXP recommended > > > > sequences to > > > > turn off the system. > > > > > Okay, but could you add one more comment for this solution? RTC > > > alarm > > > and ONOFF Button wakeup feature can't be support in this case. > > > > Enough to add it in to changelog? or should it go to the binding > > documentation? > > The binding doc is better. Sorry, I disagree. A binding is a way to describe a specific hardware layout, it isn't the right place to advice a hardware designer on the implications of a specific hardware implementation. The NXP hardware design guide is a more suitable place for this information. We also don't mention in random bindings that the system won't be able to brew a fresh cup of coffee. Regards, Lucas