130-regulator-mcp16502-lpm-pin-can-be-optional-on-some-p.patch

From 763fe72f607d4e929d2c710c88e5c6978dd6ad97 Mon Sep 17 00:00:00 2001
From: Claudiu Beznea <claudiu.beznea@microchip.com>
Date: Thu, 7 Jan 2021 16:15:26 +0200
Subject: [PATCH 130/247] regulator: mcp16502: lpm pin can be optional on some
 platforms

On some platform (e.g. SAMA7G5) LPM pin should be optional as it can
be controlled explicitly (via shutdown controller registers) in the
platform specific power saving code to decrease the power consumption
while suspended as this SoC pin may be connected to other devices that
could take power saving actions based on its value.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1610028927-9842-3-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/regulator/mcp16502.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/regulator/mcp16502.c
+++ b/drivers/regulator/mcp16502.c
@@ -550,7 +550,7 @@ static int mcp16502_probe(struct i2c_cli
 	config.regmap = rmap;
 	config.driver_data = mcp;
 
-	mcp->lpm = devm_gpiod_get(dev, "lpm", GPIOD_OUT_LOW);
+	mcp->lpm = devm_gpiod_get_optional(dev, "lpm", GPIOD_OUT_LOW);
 	if (IS_ERR(mcp->lpm)) {
 		dev_err(dev, "failed to get lpm pin: %ld\n", PTR_ERR(mcp->lpm));
 		return PTR_ERR(mcp->lpm);