linux-kernel - [PATCH] phy: rockchip-usb: power down phy when rockchip phy probe

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Message-Id: <1437118165-20713-1-git-send-email-hl@rock-chips.com>
Date:	Fri, 17 Jul 2015 15:29:25 +0800
From:	huang lin <hl@...k-chips.com>
To:	dianders@...omium.org, lyz@...k-chips.com, heiko@...ech.de
Cc:	huang lin <hl@...k-chips.com>, kishon@...com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org
Subject: [PATCH] phy: rockchip-usb: power down phy when rockchip phy probe

rockchip phy are enable when soc reset, to save power consumption,
we disable it when probe, and enable each phy when it use

Signed-off-by: huang lin <hl@...k-chips.com>
---
 drivers/phy/phy-rockchip-usb.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c
index 7d4c336..3b92d7f 100644
--- a/drivers/phy/phy-rockchip-usb.c
+++ b/drivers/phy/phy-rockchip-usb.c
@@ -98,6 +98,7 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev)
 	struct device_node *child;
 	struct regmap *grf;
 	unsigned int reg_offset;
+	int err;
 
 	grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf");
 	if (IS_ERR(grf)) {
@@ -129,6 +130,11 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev)
 			return PTR_ERR(rk_phy->phy);
 		}
 		phy_set_drvdata(rk_phy->phy, rk_phy);
+
+		/* only power up usb phy when it use, so disable it when init*/
+		err = rockchip_usb_phy_power(rk_phy, 1);
+		if (err)
+			return err;
 	}
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-- 
1.9.1

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