3.8: musb: properly set power as 500mA (value * 2)

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
beagleboard · Apr 4, 2013 · 08f4733 · 08f4733
1 parent b6f61c4
commit 08f4733
Showing 1 changed file with 46 additions and 0 deletions.
diff --git a/patches/usb/0011-ARM-OMAP-am335x-musb-use-250-for-power.patch b/patches/usb/0011-ARM-OMAP-am335x-musb-use-250-for-power.patch
@@ -0,0 +1,46 @@
+From 9f0d9d7a2cf5725ef737c2eecb1f72d0ec59bd23 Mon Sep 17 00:00:00 2001
+From: Robert Nelson <robertcnelson@gmail.com>
+Date: Wed, 3 Apr 2013 13:25:38 -0500
+Subject: [PATCH 11/11] ARM: OMAP: am335x: musb use 250 for power
+
+Issue first noticed by: Randy Rodes <randyrodesnn@gmail.com>
+https://groups.google.com/d/msg/beagleboard/qzlwO9ldULE/kXzFAY9rv8cJ
+
+According to the docs, the power value is only 8 bits, to specify 500mA
+this needs to be set to a value of 250: value * 2 = XmA
+
+Documentation/devicetree/bindings/usb/omap-usb.txt
+
+Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
+---
+ arch/arm/boot/dts/am335x-bone-common.dtsi |    2 +-
+ arch/arm/boot/dts/am335x-tester.dts       |    2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
+index ffa0a42..c0bd2db 100644
+--- a/arch/arm/boot/dts/am335x-bone-common.dtsi
++++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
+@@ -444,6 +444,6 @@
+
+ &usb_otg_hs {
+ 	interface_type = <1>;
+-	power = <500>;
++	power = <250>;
+ 	status = "okay";
+ };
+diff --git a/arch/arm/boot/dts/am335x-tester.dts b/arch/arm/boot/dts/am335x-tester.dts
+index d44bc21..7d7f5d3 100644
+--- a/arch/arm/boot/dts/am335x-tester.dts
++++ b/arch/arm/boot/dts/am335x-tester.dts
+@@ -396,6 +396,6 @@
+
+ &usb_otg_hs {
+ 	interface_type = <1>;
+-	power = <500>;
++	power = <250>;
+ 	status = "okay";
+ };
+-- 
+1.7.10.4
+