linux-kernel - [PATCH 5/9] regulator: tps65218: force set power-up/down strobe to 3 for dcdc3

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Message-ID: <1466412218-5906-6-git-send-email-j-keerthy@ti.com>
Date:	Mon, 20 Jun 2016 14:13:34 +0530
From:	Keerthy <j-keerthy@...com>
To:	<tony@...mide.com>, <broonie@...nel.org>,
	<devicetree@...r.kernel.org>
CC:	<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<t-kristo@...com>, <russ.dill@...com>, <robh+dt@...nel.org>,
	<mark.rutland@....com>, <j-keerthy@...com>,
	<linux@...linux.org.uk>, Dave Gerlach <d-gerlach@...com>
Subject: [PATCH 5/9] regulator: tps65218: force set power-up/down strobe to 3 for dcdc3

From: Tero Kristo <t-kristo@...com>

The reset value for this register seems broken on certain versions of
tps65218 chip, so make sure the dcdc3 settings is proper. Needed for
proper functionality of rtc+ddr / rtc-only modes.

Signed-off-by: Tero Kristo <t-kristo@...com>
Signed-off-by: Dave Gerlach <d-gerlach@...com>
Signed-off-by: Keerthy <j-keerthy@...com>
---
 drivers/regulator/tps65218-regulator.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
index 8eca1eb..d1e631d 100644
--- a/drivers/regulator/tps65218-regulator.c
+++ b/drivers/regulator/tps65218-regulator.c
@@ -180,8 +180,12 @@ static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
 	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
 		return -EINVAL;
 
-	if (!tps->info[rid]->strobe)
-		return -EINVAL;
+	if (!tps->info[rid]->strobe) {
+		if (rid == TPS65218_DCDC_3)
+			tps->info[rid]->strobe = 3;
+		else
+			return -EINVAL;
+	}
 
 	return tps65218_set_bits(tps, dev->desc->bypass_reg,
 				 dev->desc->bypass_mask,
-- 
1.9.1