From: David Wu <david.wu@rock-chips.com>
Date: Fri, 9 Sep 2016 04:21:42 +0000 (+0800)
Subject: arm64: dts: rockchip: pull down rst-gpio of gmac-phy at suspend for rk3399-box
X-Git-Tag: firefly_0821_release~1553
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9e5ea06cc7b881d4c8d03e066972184a5c3a0e12;p=firefly-linux-kernel-4.4.55.git

arm64: dts: rockchip: pull down rst-gpio of gmac-phy at suspend for rk3399-box

Some phys would not enter low power mode by writing 'power down'
bit into phy common register0 such as RTL8211E. And pulling down
reset gpio is also a common way to make phy get low consumption,
if the supplied regulator of phy could not be disabled at suspend.

Change-Id: Ib01f48ec8c0bdec633868bb79e4155561ca6c471
Signed-off-by: David Wu <david.wu@rock-chips.com>
---

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-box.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-box.dtsi
index bb5fef9edbea..910fde0a207e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-box.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-box.dtsi
@@ -928,8 +928,9 @@
 	snps,reset-delays-us = <0 10000 50000>;
 	assigned-clocks = <&cru SCLK_RMII_SRC>;
 	assigned-clock-parents = <&clkin_gmac>;
-	pinctrl-names = "default";
+	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&rgmii_pins>;
+	pinctrl-1 = <&rgmii_sleep_pins>;
 	tx_delay = <0x28>;
 	rx_delay = <0x11>;
 	status = "okay";
@@ -1003,4 +1004,11 @@
 				<1 21 RK_FUNC_GPIO &pcfg_pull_up>;
 		};
 	};
+
+	gmac {
+		rgmii_sleep_pins: rgmii-sleep-pins {
+			rockchip,pins =
+				<3 15 RK_FUNC_GPIO &pcfg_output_low>;
+		};
+	};
 };