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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <kernel@pengutronix.de>,
        Robin Gong <yibin.gong@nxp.com>,
        Richard Zhu <hongxing.zhu@nxp.com>,
        Dong Aisheng <aisheng.dong@nxp.com>,
        Sasha Levin <alexander.levin@microsoft.com>
Subject: [PATCH 4.4 07/97] regulator: anatop: set default voltage selector for pcie
Date:   Fri, 23 Mar 2018 10:53:54 +0100
Message-Id: <20180323094157.939739673@linuxfoundation.org>
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4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dong Aisheng <aisheng.dong@nxp.com>


[ Upstream commit 9bf944548169f6153c3d3778cf983cb5db251a0e ]

Set the initial voltage selector for vddpcie in case it's disabled
by default.

This fixes the below warning:
20c8000.anatop:regulator-vddpcie: Failed to read a valid default voltage selector.
anatop_regulator: probe of 20c8000.anatop:regulator-vddpcie failed with error -22

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Robin Gong <yibin.gong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/regulator/anatop-regulator.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -296,6 +296,11 @@ static int anatop_regulator_probe(struct
 		if (!sreg->sel && !strcmp(sreg->name, "vddpu"))
 			sreg->sel = 22;
 
+		/* set the default voltage of the pcie phy to be 1.100v */
+		if (!sreg->sel && rdesc->name &&
+		    !strcmp(rdesc->name, "vddpcie"))
+			sreg->sel = 0x10;
+
 		if (!sreg->bypass && !sreg->sel) {
 			dev_err(&pdev->dev, "Failed to read a valid default voltage selector.\n");
 			return -EINVAL;