linux-kernel - [PATCH 0/2] usb: dwc3: Add cache type configuration support for freescale layerscape

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Message-Id: <20240703-dwc-v1-0-9cbc93d49180@nxp.com>
Date: Wed, 03 Jul 2024 19:06:53 -0400
From: Frank Li <Frank.Li@....com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Felipe Balbi <balbi@...nel.org>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, imx@...ts.linux.dev, 
 Frank Li <Frank.Li@....com>, Ran Wang <ran.wang_1@....com>, 
 Jun Li <jun.li@....com>
Subject: [PATCH 0/2] usb: dwc3: Add cache type configuration support for
 freescale layerscape

There are several attempt to upstream this code in past year.

The first attempt:
https://lore.kernel.org/linux-usb/20191121095356.GB7503@b29397-desktop/

cache type is dwc core setting, not glue layer. So It'd better change in
dwc core instead of glue layer code.

The second attempt:
https://lore.kernel.org/linux-usb/20240123170206.3702413-1-Frank.Li@nxp.com/#t

DT team think there are not variable for property 'snps,dat-wr-reqinfo'.
And suggest use vendor compatible string.

This is third attempt:
Compared with first attempt:
- reduce compatible string to one 'fsl,ls-dwc3' because all setting are the
same.
- move update burst type code into dwc3_set_incr_burst_type(). and check
compatible string 'fsl,ls-dwc3'.
- Using bit field help macro.

Signed-off-by: Frank Li <Frank.Li@....com>
---
Ran Wang (2):
      dt-bindings: usb: Add chip-specific compatible string 'fsl,ls-dwc3'
      usb: dwc3: Set cache type to 'snoop' for freescale layerscape chip

 Documentation/devicetree/bindings/usb/snps,dwc3.yaml |  1 +
 drivers/usb/dwc3/core.c                              | 12 ++++++++++++
 drivers/usb/dwc3/core.h                              |  4 ++++
 3 files changed, 17 insertions(+)
---
base-commit: 0b58e108042b0ed28a71cd7edf5175999955b233
change-id: 20240703-dwc-5be3e378ddbe

Best regards,
---
Frank Li <Frank.Li@....com>