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 ebf244148092 ("ARM: OMAP2+: Use srst_udelay for USB on dm814x").
Cc: stable@vger.kernel.org Fixes: 0782e8572ce4 ("ARM: dts: Probe am335x musb with ti-sysc") Signed-off-by: Tony Lindgren tony@atomide.com --- arch/arm/boot/dts/ti/omap/am33xx.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/ti/omap/am33xx.dtsi b/arch/arm/boot/dts/ti/omap/am33xx.dtsi --- a/arch/arm/boot/dts/ti/omap/am33xx.dtsi +++ b/arch/arm/boot/dts/ti/omap/am33xx.dtsi @@ -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>;