[PATCH v6 0/3] usb: dwc3: Workaround isoc start_transfer failure

[PATCH v6 0/3] usb: dwc3: Workaround isoc start_transfer failure

[Thinh Nguyen]

DWC_usb31 peripheral v1.70a-ea06 and prior needs a SW workaround for isoc START
TRANSFER command failure. This patch series implements that workaround

Change in v6:
 - Defined more version types in "usb: dwc3: Track DWC_usb31 VERSIONTYPE"
 - Minor cleanup/fix in "usb: dwc3: Add workaround for isoc start transfer failure"
Change in v5:
 - Splitted and resent from an old patch series
 - Cleanup and fixed review issues
Change in v4:
 - None
Change in v3:
 - None
Change in v2:
 - None


Thinh Nguyen (3):
  usb: dwc3: Track DWC_usb31 VERSIONTYPE
  usb: dwc3: Add disabling of start_transfer failure quirk
  usb: dwc3: Add workaround for isoc start transfer failure

 Documentation/devicetree/bindings/usb/dwc3.txt |   3 +
 drivers/usb/dwc3/core.c                        |   3 +
 drivers/usb/dwc3/core.h                        |  23 +++++
 drivers/usb/dwc3/gadget.c                      | 131 +++++++++++++++++++++++++
 4 files changed, 160 insertions(+)

-- 
2.11.0

[PATCH v6 2/3] usb: dwc3: Add disabling of start_transfer failure quirk

[Thinh Nguyen]

DWC_usb31 peripheral v1.70a-ea06 and prior needs a SW workaround for
isoc START TRANSFER command failure. However, some affected versions may
have RTL patches to fix this without a SW workaround. Add this quirk to
disable the SW workaround when it is not needed.

Synopsys STAR 9001202023: Wrong microframe number for isochronous IN
endpoints.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
 Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 636630fb92d7..fc64db0a7a0a 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -37,6 +37,9 @@ Optional properties:
  - phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy"
 	or "usb3-phy".
  - resets: a single pair of phandle and reset specifier
+ - snps,dis-start-transfer-quirk: when set, disable isoc START TRANSFER command
+			failure SW work-around for DWC_usb31 version 1.70a-ea06
+			and prior.
  - snps,usb3_lpm_capable: determines if platform is USB3 LPM capable
  - snps,disable_scramble_quirk: true when SW should disable data scrambling.
 	Only really useful for FPGA builds.
-- 
2.11.0

Re: [PATCH v6 2/3] usb: dwc3: Add disabling of start_transfer failure quirk

[Rob Herring]

On Thu, Nov 08, 2018 at 12:06:57PM -0800, Thinh Nguyen wrote:
> DWC_usb31 peripheral v1.70a-ea06 and prior needs a SW workaround for
> isoc START TRANSFER command failure. However, some affected versions may
> have RTL patches to fix this without a SW workaround. Add this quirk to
> disable the SW workaround when it is not needed.
> 
> Synopsys STAR 9001202023: Wrong microframe number for isochronous IN
> endpoints.
> 
> Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
> ---
>  Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++
>  1 file changed, 3 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v6 2/3] usb: dwc3: Add disabling of start_transfer failure quirk

[Felipe Balbi]

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Thinh Nguyen <thinh.nguyen@synopsys.com> writes:

> DWC_usb31 peripheral v1.70a-ea06 and prior needs a SW workaround for
> isoc START TRANSFER command failure. However, some affected versions may
> have RTL patches to fix this without a SW workaround. Add this quirk to
> disable the SW workaround when it is not needed.
>
> Synopsys STAR 9001202023: Wrong microframe number for isochronous IN
> endpoints.
>
> Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>

unfortunately, does't apply to testing/next. Could you rebase??

checking file Documentation/devicetree/bindings/usb/dwc3.txt
Hunk #1 FAILED at 37.
1 out of 1 hunk FAILED

(patch 1/3 is applied, though)

-- 
balbi

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Re: [PATCH v6 2/3] usb: dwc3: Add disabling of start_transfer failure quirk

[Thinh Nguyen]

Hi,

On 11/14/2018 3:41 AM, Felipe Balbi wrote:
> Thinh Nguyen <thinh.nguyen@synopsys.com> writes:
>
>> DWC_usb31 peripheral v1.70a-ea06 and prior needs a SW workaround for
>> isoc START TRANSFER command failure. However, some affected versions may
>> have RTL patches to fix this without a SW workaround. Add this quirk to
>> disable the SW workaround when it is not needed.
>>
>> Synopsys STAR 9001202023: Wrong microframe number for isochronous IN
>> endpoints.
>>
>> Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
> unfortunately, does't apply to testing/next. Could you rebase??
>
Done.

Thanks,
Thinh