From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: [RFC v4 14/14] ARM: dts: exynos: Fix LAN and HUB after bootloader initialization on Odroid U3 Date: Thu, 09 Jun 2016 11:44:31 +0200 Message-ID: <1465465471-28740-15-git-send-email-k.kozlowski@samsung.com> References: <1465465471-28740-1-git-send-email-k.kozlowski@samsung.com> Return-path: In-reply-to: <1465465471-28740-1-git-send-email-k.kozlowski@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org To: Ulf Hansson , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Krzysztof Kozlowski , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , Liam Girdwood , Mark Brown , Greg Kroah-Hartman , Hans de Goede , Jean-Christophe Plagniol-Villard , Tomi Valkeinen , Heiko Stuebner , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@v Cc: Bartlomiej Zolnierkiewicz List-Id: devicetree@vger.kernel.org On Odroid U3 (Exynos4412-based) board if USB was initialized by bootloader (in U-Boot "usb start" before tftpboot), the HUB (usb3503) and LAN (smsc95xx) after after successful probing were not visible in the system ("lsusb"). In such case the devices had to be fully reset before configuring. Reset by GPIO (called RESET_N pin) and by RESET field in STCD register in usb3503 HUB are not sufficient. Instead full reset has to be done by disabling and enabling regulator. Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/exynos4412-odroidu3.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts index 31cdc036fda4..8fd50061d91b 100644 --- a/arch/arm/boot/dts/exynos4412-odroidu3.dts +++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts @@ -99,11 +99,15 @@ clock-names = "refclk"; clocks = <&pmu_system_controller 0>; refclk-frequency = <24000000>; + + power-sequence; + vdd-supply = <&buck8_reg>; }; &ehci { port@1 { status = "okay"; + usb-pwrseq = <&usb3503>; }; port@2 { status = "okay"; -- 1.9.1