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From: Keerthy <j-keerthy@ti.com>
To: <tony@atomide.com>, <lee.jones@linaro.org>, <robh+dt@kernel.org>
Cc: <linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-gpio@vger.kernel.org>,
	<nm@ti.com>, <j-keerthy@ti.com>, <t-kristo@ti.com>
Subject: [PATCH v2 1/5] Documentation: pinctrl: palmas: Add ti,palmas-powerhold-override property definition
Date: Thu, 10 Nov 2016 10:39:16 +0530	[thread overview]
Message-ID: <1478754560-27923-2-git-send-email-j-keerthy@ti.com> (raw)
In-Reply-To: <1478754560-27923-1-git-send-email-j-keerthy@ti.com>

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>
---
 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

  reply	other threads:[~2016-11-10  5:09 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-10  5:09 [PATCH v2 0/5] mfd: palmas: add powerhold overriding during power off Keerthy
2016-11-10  5:09 ` Keerthy [this message]
2016-11-15  1:43   ` [PATCH v2 1/5] Documentation: pinctrl: palmas: Add ti,palmas-powerhold-override property definition Rob Herring
2016-11-24  5:28     ` Keerthy
2016-11-24  8:45       ` Lee Jones
2016-11-28  3:51         ` Keerthy
2016-11-10  5:09 ` [PATCH v2 2/5] mfd: palmas: Remove redundant check in palmas_power_off Keerthy
2016-11-22 13:02   ` Lee Jones
2016-11-10  5:09 ` [PATCH v2 3/5] mfd: palmas: Reset the POWERHOLD mux during power off Keerthy
2016-11-22 13:03   ` Lee Jones
2017-03-24 10:00     ` Keerthy
2017-03-24 11:30       ` Lee Jones
2017-03-24 11:36         ` Keerthy
2016-11-10  5:09 ` [PATCH v2 4/5] arm: dts: am57xx-beagle-x15-common: Add overide powerhold property Keerthy
2016-11-15  0:08   ` Tony Lindgren
2016-11-23  3:35     ` Keerthy
2016-11-23  8:33       ` Lee Jones
2016-11-23  8:32         ` Keerthy
2016-11-23 16:08           ` Tony Lindgren
2016-11-24  3:45             ` Keerthy
2016-11-10  5:09 ` [PATCH v2 5/5] arm: dts: am57xx-idk-common: " Keerthy
2016-11-15  0:09   ` Tony Lindgren

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