From: Tony Lindgren <tony@atomide.com>
Date: Thu, 3 Oct 2019 16:59:03 +0000 (-0700)
Subject: ARM: dts: omap4-droid4: Allow 300mA current for USB peripherals
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=be57274e0dd7f74b5c377aaaa952ce4519e9f46a;p=linux.git

ARM: dts: omap4-droid4: Allow 300mA current for USB peripherals

Looks like we can use some USB Ethernet dongles for example if we increase
the allowed power limit.

A similar PMIC MC13783 documents maximum current limit as 300 mA in in
"Table 10-4. VBUS Regulator Main Characteristics". Since we have no
other documentation, let's use that value as the limit.

Cc: Jacopo Mondi <jacopo@jmondi.org>
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Michael Scott <hashcode0f@gmail.com>
Cc: NeKit <nekit1000@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts
index a40fe8d49da64..66ad4fa7dcaae 100644
--- a/arch/arm/boot/dts/omap4-droid4-xt894.dts
+++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts
@@ -709,7 +709,12 @@
 &usb_otg_hs {
 	interface-type = <1>;
 	mode = <3>;
-	power = <50>;
+
+	/*
+	 * Max 300 mA steps based on similar PMIC MC13783UG.pdf "Table 10-4.
+	 * VBUS Regulator Main Characteristics". Binding uses 2 mA units.
+	 */
+	power = <150>;
 };
 
 &i2c4 {