From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
To: hzpeterchen@gmail.com, Ulf Hansson <ulf.hansson@linaro.org>,
Sebastian Reichel <sre@kernel.org>,
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
David Woodhouse <dwmw2@infradead.org>,
Krzysztof Kozlowski <k.kozlowski@samsung.com>,
Javier Martinez Canillas <javier@osg.samsung.com>,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
linux-pm@vger.kernel.or, Alan Stern <stern@rowland.harvard.edu>,
linux-usb@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>, Kukjin Kim <kgene@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: [PATCH v3 12/12] ARM: dts: exynos: Fix LAN and HUB after bootloader initialization on Odroid U3
Date: Wed, 01 Jun 2016 10:02:21 +0200 [thread overview]
Message-ID: <1464768141-25420-13-git-send-email-k.kozlowski@samsung.com> (raw)
In-Reply-To: <1464768141-25420-1-git-send-email-k.kozlowski@samsung.com>
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 <k.kozlowski@samsung.com>
---
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..23e30e4609df 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;
+ ext-supply = <&buck8_reg>;
};
&ehci {
port@1 {
status = "okay";
+ usb-pwrseq = <&usb3503>;
};
port@2 {
status = "okay";
--
1.9.1
next prev parent reply other threads:[~2016-06-01 8:03 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-01 8:02 [PATCH v3 00/12] usb/mmc/power: Generic power sequence (and fix USB/LAN when TFTP booting) Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 01/12] power/mmc: Move pwrseq drivers to power/pwrseq Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 02/12] MAINTAINERS: Retain Ulf Hansson as the same maintainer of pwrseq Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 03/12] power: pwrseq: Enable COMPILE_TEST for drivers Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 04/12] power: pwrseq: Remove mmc prefix from mmc_pwrseq Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 05/12] power: pwrseq: Generalize mmc_pwrseq operations by removing mmc prefix Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 06/12] power: pwrseq: simple: Add support for regulator and generic property Krzysztof Kozlowski
2016-06-03 2:02 ` Rob Herring
2016-06-03 12:35 ` Krzysztof Kozlowski
2016-06-06 3:22 ` Peter Chen
2016-06-07 9:29 ` Krzysztof Kozlowski
2016-06-08 19:03 ` Rob Herring
2016-06-09 2:34 ` Chen-Yu Tsai
2016-06-09 5:11 ` Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 07/12] power: pwrseq: Add support for USB hubs with external power Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 08/12] usb: hub: Handle deferred probe Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 09/12] EXAMPLE CODE: usb: port: Parse pwrseq phandle from Device Tree Krzysztof Kozlowski
2016-06-01 8:57 ` Stephen Boyd
2016-06-01 9:06 ` Krzysztof Kozlowski
2016-06-01 12:05 ` Peter Chen
2016-06-01 18:16 ` Stephen Boyd
2016-06-02 1:24 ` Peter Chen
2016-06-01 8:02 ` [PATCH v3 10/12] EXAMPLE CODE: usb: hub: Power sequence the ports on activation Krzysztof Kozlowski
2016-06-01 8:02 ` [PATCH v3 11/12] ARM: dts: exynos: Switch the buck8 to GPIO mode on Odroid U3 Krzysztof Kozlowski
2016-06-01 8:02 ` Krzysztof Kozlowski [this message]
2016-06-01 11:59 ` [PATCH v3 12/12] ARM: dts: exynos: Fix LAN and HUB after bootloader initialization " Peter Chen
2016-06-02 7:26 ` Krzysztof Kozlowski
2016-06-02 7:58 ` Peter Chen
2016-06-06 20:43 ` [PATCH v3 00/12] usb/mmc/power: Generic power sequence (and fix USB/LAN when TFTP booting) Heiko Stübner
2016-06-07 6:03 ` Krzysztof Kozlowski
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