Re: [PATCH 1/4] Documentation: pinctrl: palmas: Add ti,palmas-powerhold-override property definition

From: Keerthy
Date: Wed Nov 09 2016 - 23:25:52 EST




On Wednesday 09 November 2016 09:40 PM, Lee Jones wrote:
On Thu, 27 Oct 2016, Keerthy wrote:

GPIO7 is configured in POWERHOLD mode which has higher priority
over DEV_ON bit and keeps the PMIC supplies on even after the DEV_ON
bit is turned off. This property enables driver to over ride the
POWERHOLD value to GPIO7 so as to turn off the PMIC in power off
scenarios.

Signed-off-by: Keerthy <j-keerthy@xxxxxx>
---
Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt | 9 +++++++++
1 file changed, 9 insertions(+)

This requires a DT Ack.

Okay.


diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt
index caf297b..c28d4eb8 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt
@@ -35,6 +35,15 @@ Optional properties:
- ti,palmas-enable-dvfs2: Enable DVFS2. Configure pins for DVFS2 mode.
Selection primary or secondary function associated to GPADC_START
and SYSEN2 pin/pad for DVFS2 interface
+- ti,palmas-override-powerhold: This is applicable for PMICs for which
+ GPIO7 is configured in POWERHOLD mode which has higher priority
+ over DEV_ON bit and keeps the PMIC supplies on even after the DEV_ON
+ bit is turned off. This property enables driver to over ride the
+ POWERHOLD value to GPIO7 so as to turn off the PMIC in power off
+ scenarios. So for GPIO7 if ti,palmas-override-powerhold is set
+ then the GPIO_7 field should never be muxed to anything else.
+ It should be set to POWERHOLD by default and only in case of
+ power off scenarios the driver will over ride the mux value.

This binding uses the following generic properties as defined in
pinctrl-bindings.txt: