[PATCH v2 2/2] dt-bindings: usb: snps,dwc3: Add 'snps,global-regs-starting-offset' quirk

Stanley Chang
2023-04-13T04:25:21Z

Add a new 'snps,global-regs-starting-offset' DT to dwc3 core to remap
the global register start address

The RTK DHC SoCs were designed the global register address offset at
0x8100. The default address is at DWC3_GLOBALS_REGS_START (0xc100).
Therefore, add the property of device-tree to adjust this start address.

Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
---
v1 to v2 change:
1. Change the name of the property "snps,global-regs-starting-offset".
---
Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index be36956af53b..5cbf3b7ded04 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -359,6 +359,13 @@ properties:
items:
enum: [1, 4, 8, 16, 32, 64, 128, 256]

+ snps,global-regs-starting-offset:
+ description:
+ value for remapping global register start address. For some dwc3
+ controller, the dwc3 global register start address is not at
+ default DWC3_GLOBALS_REGS_START (0xc100). This property is added to
+ adjust the address.
+
port:
$ref: /schemas/graph.yaml#/properties/port
description:
--
2.34.1