From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
Shawn Guo <shawnguo@kernel.org>,
linux-kernel@vger.kernel.org, Fabio Estevam <festevam@gmail.com>,
Chris Healy <cphealy@gmail.com>,
Lucas Stach <l.stach@pengutronix.de>
Subject: [PATCH 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed
Date: Wed, 22 May 2019 00:12:27 -0700 [thread overview]
Message-ID: <20190522071227.31488-3-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190522071227.31488-1-andrew.smirnov@gmail.com>
Cabling used to connect devices to USBH1 on RDU2 does not meet USB
spec cable quality and cable length requirements to operate at High
Speed, so limit the port to Full Speed only.
Reported-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
index 5484e4b87975..3b37fe68d373 100644
--- a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
@@ -772,6 +772,7 @@
&usbh1 {
vbus-supply = <®_5p0v_main>;
disable-over-current;
+ maximum-speed = "full-speed";
status = "okay";
};
--
2.21.0
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next prev parent reply other threads:[~2019-05-22 7:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-22 7:12 [PATCH 1/3] ARM: dts: imx6: rdu2: Add node for UCS1002 USB charger chip Andrey Smirnov
2019-05-22 7:12 ` [PATCH 2/3] ARM: dts: imx6: rdu2: Disable WP for USDHC2 and USDHC3 Andrey Smirnov
2019-05-23 0:27 ` Chris Healy
2019-05-22 7:12 ` Andrey Smirnov [this message]
2019-05-22 9:33 ` [PATCH 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed Lucas Stach
2019-05-22 17:56 ` Andrey Smirnov
2019-05-22 18:10 ` Chris Healy
2019-05-22 9:37 ` [PATCH 1/3] ARM: dts: imx6: rdu2: Add node for UCS1002 USB charger chip Lucas Stach
2019-05-22 17:49 ` Andrey Smirnov
2019-05-29 7:18 Andrey Smirnov
2019-05-29 7:18 ` [PATCH 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed Andrey Smirnov
2019-05-29 8:27 ` Lucas Stach
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