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ARM: dts: Fix occasional boot hang for am3 usb

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[ Upstream commit 9b6a51aab5f5f9f71d2fa16e8b4d530e1643dfcb ]

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 ebf2441480 ("ARM: OMAP2+: Use srst_udelay for USB on dm814x").

Cc: stable@vger.kernel.org
Fixes: 0782e8572c ("ARM: dts: Probe am335x musb with ti-sysc")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tony Lindgren
2023-12-12 15:50:35 +02:00
committed by Greg Kroah-Hartman
parent 1e2db0124c
commit cdbc4a1115
1 changed files with 1 additions and 0 deletions
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arch/arm/boot/dts/am33xx.dtsi
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@@ -347,6 +347,7 @@
<SYSC_IDLE_NO>, <SYSC_IDLE_NO>,
<SYSC_IDLE_SMART>, <SYSC_IDLE_SMART>,
<SYSC_IDLE_SMART_WKUP>; <SYSC_IDLE_SMART_WKUP>;
ti,sysc-delay-us = <2>;
clocks = <&l3s_clkctrl AM3_L3S_USB_OTG_HS_CLKCTRL 0>; clocks = <&l3s_clkctrl AM3_L3S_USB_OTG_HS_CLKCTRL 0>;
clock-names = "fck"; clock-names = "fck";
#address-cells = <1>; #address-cells = <1>;