Commit 9b6a51aa authored by Tony Lindgren's avatar Tony Lindgren
Browse files

ARM: dts: Fix occasional boot hang for am3 usb 



With subtle timings changes, we can now sometimes get an external abort on
non-linefetch error booting am3 devices at sysc_reset(). This is because
of a missing reset delay needed for the usb target module.

Looks like we never enabled the delay earlier for am3, although a similar
issue was seen earlier with a similar usb setup for dm814x as described in
commit ebf24414 ("ARM: OMAP2+: Use srst_udelay for USB on dm814x").

Cc: stable@vger.kernel.org
Fixes: 0782e857 ("ARM: dts: Probe am335x musb with ti-sysc")
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent c72b9c33

arch/arm/boot/dts/ti/omap/am33xx.dtsi

+1 −0
Original line number Diff line number Diff line
@@ -359,6 +359,7 @@ usb: target-module@47400000 { 
					<SYSC_IDLE_NO>,

					<SYSC_IDLE_SMART>,

					<SYSC_IDLE_SMART_WKUP>;

			ti,sysc-delay-us = <2>;

			clocks = <&l3s_clkctrl AM3_L3S_USB_OTG_HS_CLKCTRL 0>;

			clock-names = "fck";

			#address-cells = <1>;