Re: [PATCH 4.19 182/422] ARM: imx6: register pm_power_off handler if "fsl,pmic-stby-poweroff" is set

Hi!

From: Oleksij Rempel o.rempel@pengutronix.de

[ Upstream commit 8148d2136002da2e2887caf6a07bbd9c033f14f3 ]

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: http://www.nxp.com/assets/documents/data/en/reference-manuals/IMX6DQRM.pdf page 5083

This patch implements step 4. of this sequence.

• if (of_property_read_bool(np, "fsl,pmic-stby-poweroff"))

• imx6_pm_stby_poweroff_probe();
  

}

This is only active when fsl,pmic-stby-poweroff is present somewhere in the tree, and that is not the case for 4.19-stable AFAICT. Is it still good idea to have it stable branch?

Pavel