linux-kernel - [PATCH 6/6] regulator: anatop: set default voltage selector for pcie

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Date:   Wed, 12 Apr 2017 09:58:47 +0800
From:   Dong Aisheng <aisheng.dong@....com>
To:     <linux-kernel@...r.kernel.org>
CC:     <shawnguo@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <aisheng.dong@....com>, <kernel@...gutronix.de>,
        <lgirdwood@...il.com>, <broonie@...nel.org>, <yibin.gong@....com>,
        Richard Zhu <hongxing.zhu@....com>
Subject: [PATCH 6/6] regulator: anatop: set default voltage selector for pcie

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@...il.com>
Cc: Mark Brown <broonie@...nel.org>
Cc: Shawn Guo <shawnguo@...nel.org>
Cc: Sascha Hauer <kernel@...gutronix.de>
Cc: Robin Gong <yibin.gong@....com>
Cc: Richard Zhu <hongxing.zhu@....com>
Signed-off-by: Richard Zhu <hongxing.zhu@....com>
Signed-off-by: Dong Aisheng <aisheng.dong@....com>
---
 drivers/regulator/anatop-regulator.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index 6da0b20..910adfd 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -301,6 +301,11 @@ static int anatop_regulator_probe(struct platform_device *pdev)
 		if (!sreg->sel && rdesc->name && !strcmp(rdesc->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;
-- 
2.7.4