From: Keerthy <j-keerthy@ti.com>
To: linus.walleij@linaro.org
Cc: j-keerthy@ti.com, t-kristo@ti.com, robh+dt@kernel.org,
tony@atomide.com, devicetree@vger.kernel.org,
linux-omap@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v3] Documentation: pinctrl: palmas: Add ti,palmas-powerhold-override property definition
Date: Mon, 28 Nov 2016 09:31:58 +0530 [thread overview]
Message-ID: <1480305718-5127-1-git-send-email-j-keerthy@ti.com> (raw)
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@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
---
Remaining patches of the series are already queued.
Changes in v3: Added Rob's Ack.
Documentation/devicetree/bindings/pinctrl/pinctrl-palmas.txt | 9 +++++++++
1 file changed, 9 insertions(+)
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:
--
1.9.1
next reply other threads:[~2016-11-28 4:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-28 4:01 Keerthy [this message]
2016-11-30 12:55 ` [PATCH v3] Documentation: pinctrl: palmas: Add ti,palmas-powerhold-override property definition Linus Walleij
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