On Mon, 2017-06-19 at 07:02 +0200, Oleksij Rempel wrote: > One of the Freescale recommended sequences for power off with > external > PMIC is the following: > ... > 3. SoC is programming PMIC for power off when standby is asserted. > 4. In CCM STOP mode, Standby is asserted, PMIC gates SoC supplies. > > See: > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww > .nxp.com%2Fassets%2Fdocuments%2Fdata%2Fen%2Freference- > manuals%2FIMX6DQRM.pdf&data=01%7C01%7Cleonard.crestez%40nxp.com%7C32c > df19d0ab44ed8e24d08d4b6d097f4%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0& > sdata=CWDpnEGikPGmSTM3dQH8IMxQCVzcIvHL69nu962d8M0%3D&reserved=0 > page 5083 > > This patch implements step 4. of this sequence. > > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> > --- > arch/arm/mach-imx/pm-imx6.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm- > imx6.c > index e61b1d1027e1..cb76832935f0 100644 > --- a/arch/arm/mach-imx/pm-imx6.c > +++ b/arch/arm/mach-imx/pm-imx6.c > @@ -602,6 +602,28 @@ static void __init imx6_pm_common_init(const > struct imx6_pm_socdata > IMX6Q_GPR1_GINT); > } > > +static void imx6_pm_poweroff(void) > +{ > + imx6_set_lpm(STOP_POWER_OFF); > + cpu_suspend(0, imx6q_suspend_finish); It's a bit strange that you're using parts of the suspend code for this. Perhaps you could just write your bits to CLPCR and then execute a WFI? It would also be nice to rename this to something like imx6_pm_stby_poweroff to make it clear that it's only for a certain power off path. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
