From 763fe72f607d4e929d2c710c88e5c6978dd6ad97 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea 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 Link: https://lore.kernel.org/r/1610028927-9842-3-git-send-email-claudiu.beznea@microchip.com Signed-off-by: Mark Brown --- 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);