Add a new 'snps,parkmode-disable-hs-quirk' DT quirk to dwc3 core for
disable the high-speed parkmode.
For some USB wifi devices, if enable this feature it will reduce the
performance. Therefore, add an option for disabling HS park mode by
device-tree.
In Synopsys's dwc3 data book:
In a few high speed devices when an IN request is sent within 900ns of the
ACK of the previous packet, these devices send a NAK. When connected to
these devices, if required, the software can disable the park mode if you
see performance drop in your system. When park mode is disabled,
pipelining of multiple packet is disabled and instead one packet at a time
is requested by the scheduler. This allows up to 12 NAKs in a micro-frame
and improves performance of these slow devices.
Signed-off-by: Stanley Chang <[email protected]>
---
v2 to v3 change:
1. Add the comment message.
2. cc the right maintainers.
---
Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index be36956af53b..45ca967b8d14 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -232,6 +232,11 @@ properties:
When set, all SuperSpeed bus instances in park mode are disabled.
type: boolean
+ snps,parkmode-disable-hs-quirk:
+ description:
+ When set, all HighSpeed bus instances in park mode are disabled.
+ type: boolean
+
snps,dis_metastability_quirk:
description:
When set, disable metastability workaround. CAUTION! Use only if you are
--
2.34.1
On Thu, Apr 13, 2023 at 04:53:50PM +0800, Stanley Chang wrote:
> Add a new 'snps,parkmode-disable-hs-quirk' DT quirk to dwc3 core for
> disable the high-speed parkmode.
>
> For some USB wifi devices, if enable this feature it will reduce the
> performance. Therefore, add an option for disabling HS park mode by
> device-tree.
>
> In Synopsys's dwc3 data book:
> In a few high speed devices when an IN request is sent within 900ns of the
> ACK of the previous packet, these devices send a NAK. When connected to
> these devices, if required, the software can disable the park mode if you
> see performance drop in your system. When park mode is disabled,
> pipelining of multiple packet is disabled and instead one packet at a time
> is requested by the scheduler. This allows up to 12 NAKs in a micro-frame
> and improves performance of these slow devices.
>
> Signed-off-by: Stanley Chang <[email protected]>
> ---
> v2 to v3 change:
> 1. Add the comment message.
> 2. cc the right maintainers.
This is not properly threaded with patch 1/2 for some reason, so our
tools can not pick up the whole thread at once. Please fix up your
sending script, or just use git send-email directly.
thanks,
greg k-h
> This is not properly threaded with patch 1/2 for some reason, so our tools can
> not pick up the whole thread at once. Please fix up your sending script, or
> just use git send-email directly.
>
> thanks,
>
> greg k-h
>
I send the patch by git send-email.
git send-email --cc="Stanley Chang <[email protected]>" --to="Thinh Nguyen <[email protected]>" --cc-cmd='./scripts/get_maintainer.pl -norolestats v3-0001-usb-dwc3-core-add-support-for-disabling-High-spee.patch' --annotate v3-0001-usb-dwc3-core-add-support-for-disabling-High-spee.patch
git send-email --cc="Stanley Chang <[email protected]>" --to="Thinh Nguyen <[email protected]>" --cc-cmd='./scripts/get_maintainer.pl -norolesats v3-0002-dt-bindings-usb-snps-dwc3-Add-snps-parkmode-disab.patch' --annotate v3-0002-dt-bindings-usb-snps-dwc3-Add-snps-parkmode-disab.patch
I don't know why it can't thread with 2 patches?
Do I need to resend v4 patch?
Or how can I to resolve this problem?
On 13/04/2023 11:36, Stanley Chang[昌育德] wrote:
>> This is not properly threaded with patch 1/2 for some reason, so our tools can
>> not pick up the whole thread at once. Please fix up your sending script, or
>> just use git send-email directly.
>>
>> thanks,
>>
>> greg k-h
>>
>
> I send the patch by git send-email.
>
> git send-email --cc="Stanley Chang <[email protected]>" --to="Thinh Nguyen <[email protected]>" --cc-cmd='./scripts/get_maintainer.pl -norolestats v3-0001-usb-dwc3-core-add-support-for-disabling-High-spee.patch' --annotate v3-0001-usb-dwc3-core-add-support-for-disabling-High-spee.patch
>
> git send-email --cc="Stanley Chang <[email protected]>" --to="Thinh Nguyen <[email protected]>" --cc-cmd='./scripts/get_maintainer.pl -norolesats v3-0002-dt-bindings-usb-snps-dwc3-Add-snps-parkmode-disab.patch' --annotate v3-0002-dt-bindings-usb-snps-dwc3-Add-snps-parkmode-disab.patch
>
> I don't know why it can't thread with 2 patches?
You can - git help send-email
Easiest way is to: git send-email .... v3*
Best regards,
Krzysztof
On Thu, Apr 13, 2023 at 09:36:58AM +0000, Stanley Chang[昌育德] wrote:
> > This is not properly threaded with patch 1/2 for some reason, so our tools can
> > not pick up the whole thread at once. Please fix up your sending script, or
> > just use git send-email directly.
> >
> > thanks,
> >
> > greg k-h
> >
>
> I send the patch by git send-email.
>
> git send-email --cc="Stanley Chang <[email protected]>" --to="Thinh Nguyen <[email protected]>" --cc-cmd='./scripts/get_maintainer.pl -norolestats v3-0001-usb-dwc3-core-add-support-for-disabling-High-spee.patch' --annotate v3-0001-usb-dwc3-core-add-support-for-disabling-High-spee.patch
>
> git send-email --cc="Stanley Chang <[email protected]>" --to="Thinh Nguyen <[email protected]>" --cc-cmd='./scripts/get_maintainer.pl -norolesats v3-0002-dt-bindings-usb-snps-dwc3-Add-snps-parkmode-disab.patch' --annotate v3-0002-dt-bindings-usb-snps-dwc3-Add-snps-parkmode-disab.patch
>
> I don't know why it can't thread with 2 patches?
Because the second invocation of git send-email knows nothing about the
first. As Krzysztof said, send both patches on the same command line.
> Do I need to resend v4 patch?
Yes, I can not take these as-is for this reason.
thanks,
greg k-h