2022-02-04 13:57:50 +00:00
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From 763fe72f607d4e929d2c710c88e5c6978dd6ad97 Mon Sep 17 00:00:00 2001
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From: Claudiu Beznea <claudiu.beznea@microchip.com>
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Date: Thu, 7 Jan 2021 16:15:26 +0200
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Subject: [PATCH 130/247] regulator: mcp16502: lpm pin can be optional on some
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platforms
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On some platform (e.g. SAMA7G5) LPM pin should be optional as it can
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be controlled explicitly (via shutdown controller registers) in the
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platform specific power saving code to decrease the power consumption
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while suspended as this SoC pin may be connected to other devices that
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could take power saving actions based on its value.
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Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
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Link: https://lore.kernel.org/r/1610028927-9842-3-git-send-email-claudiu.beznea@microchip.com
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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drivers/regulator/mcp16502.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/regulator/mcp16502.c
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+++ b/drivers/regulator/mcp16502.c
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2022-03-02 13:11:44 +00:00
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@@ -550,7 +550,7 @@ static int mcp16502_probe(struct i2c_cli
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2022-02-04 13:57:50 +00:00
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config.regmap = rmap;
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config.driver_data = mcp;
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- mcp->lpm = devm_gpiod_get(dev, "lpm", GPIOD_OUT_LOW);
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+ mcp->lpm = devm_gpiod_get_optional(dev, "lpm", GPIOD_OUT_LOW);
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if (IS_ERR(mcp->lpm)) {
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dev_err(dev, "failed to get lpm pin: %ld\n", PTR_ERR(mcp->lpm));
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return PTR_ERR(mcp->lpm);
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