linux-kernel - [PATCH v2 1/3] ARM: dts: Turn on USB host vbus on rk3288-evb

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Message-Id: <1406750412-15592-2-git-send-email-dianders@chromium.org>
Date:	Wed, 30 Jul 2014 13:00:10 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Heiko Stuebner <heiko@...ech.de>,
	Kever Yang <kever.yang@...k-chips.com>
Cc:	Sonny Rao <sonnyrao@...omium.org>, Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org,
	sergei.shtylyov@...entembedded.com,
	Doug Anderson <dianders@...omium.org>, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/3] ARM: dts: Turn on USB host vbus on rk3288-evb

There is no phy driver that works on the Rockchip board for either USB
host port yet.  For now just hardcode the vbus signal to be on all the
time which makes both the dwc2 host and the EHCI port work.

Signed-off-by: Doug Anderson <dianders@...omium.org>
---
Changes in v2:
- usb_host_vbus => vcc_host to match supply name, not pin name.
- pin name now matches in name in schematic

 arch/arm/boot/dts/rk3288-evb.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi b/arch/arm/boot/dts/rk3288-evb.dtsi
index 749e20d..e6c5b03 100644
--- a/arch/arm/boot/dts/rk3288-evb.dtsi
+++ b/arch/arm/boot/dts/rk3288-evb.dtsi
@@ -35,6 +35,18 @@
 			debounce-interval = <100>;
 		};
 	};
+
+	/* This turns on USB vbus for both host0 (ehci) and host1 (dwc2) */
+	vcc_host: vcc-host-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 14 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&host_vbus_drv>;
+		regulator-name = "vcc_host";
+		regulator-always-on;
+		regulator-boot-on;
+	};
 };
 
 &i2c0 {
@@ -71,4 +83,10 @@
 			rockchip,pins = <0 5 RK_FUNC_GPIO &pcfg_pull_up>;
 		};
 	};
+
+	usb {
+		host_vbus_drv: host-vbus-drv {
+			rockchip,pins = <0 14 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
-- 
2.0.0.526.g5318336

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