dt-bindings: usb: snps,dwc3: Add 'snps,resume-hs-terminations' quirk
authorPiyush Mehta <piyush.mehta@amd.com>
Tue, 20 Sep 2022 05:22:34 +0000 (10:52 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 22 Sep 2022 13:52:30 +0000 (15:52 +0200)
commit031cba1695d4d3767ba47718077e83f2b5aac944
tree8eca505f0673a22fbf6e5f91df2868a07f41082a
parentfc4ade55c617dc73c7e9756b57f3230b4ff24540
dt-bindings: usb: snps,dwc3: Add 'snps,resume-hs-terminations' quirk

Add a new 'snps,resume-hs-terminations' DT quirk to dwc3 core to resolved
issue of CRC failed error.

On the resume path, U3/U2 exit controller fails to send proper CRC checksum
in CRC5 field. As result Transaction Error is generated. Enabling bit 10 of
GUCTL1 will correct this problem.

When this bit is set to '1', the UTMI/ULPI opmode will be changed to
"normal" along with HS terminations and term/xcvr select signals after EOR.
This option is to support certain legacy UTMI/ULPI PHYs.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Piyush Mehta <piyush.mehta@amd.com>
Link: https://lore.kernel.org/r/20220920052235.194272-2-piyush.mehta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Documentation/devicetree/bindings/usb/snps,dwc3.yaml