[PATCH v1 1/2] dt-bindings: usb: dwc2: add support for APM82181 SoCs USB OTG HS and FS

adds the specific compatible string for the DWC2 IP found in the APM82181
SoCs. The APM82181's USB-OTG seems like it was taken from its direct
predecessor: the PPC460EX (canyonlands).

Signed-off-by: Christian Lamparter <redacted>
---
 Documentation/devicetree/bindings/usb/dwc2.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc2.yaml b/Documentation/devicetree/bindings/usb/dwc2.yaml
index ffa157a0fce7..34ddb5c877a1 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.yaml
+++ b/Documentation/devicetree/bindings/usb/dwc2.yaml

@@ -39,6 +39,7 @@ properties:
               - amlogic,meson-g12a-usb
           - const: snps,dwc2
       - const: amcc,dwc-otg
+      - const: apm,apm82181-dwc-otg
       - const: snps,dwc2
       - const: st,stm32f4x9-fsotg
       - const: st,stm32f4x9-hsotg

-- 
2.28.0

adds the specific compatible string for the DWC2 IP found in the APM82181
SoCs. The IP is setup correctly through the auto detection... With the
exception of the AHB Burst Size. The default of GAHBCFG_HBSTLEN_INCR4 of
the "snps,dwc2" can cause a system hang when the USB and SATA is used
concurrently. Because the predecessor (PPC460EX (Canyonlands)) already
had the same problem, this SoC can make use of the existing
dwc2_set_amcc_params() function.

Signed-off-by: Christian Lamparter <redacted>
---
 drivers/usb/dwc2/params.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 8f9d061c4d5f..6d2b9a6c247c 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c

@@ -210,6 +210,7 @@ const struct of_device_id dwc2_of_match_table[] = {
 	{ .compatible = "amlogic,meson-g12a-usb",
 	  .data = dwc2_set_amlogic_g12a_params },
 	{ .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params },
+	{ .compatible = "apm,apm82181-dwc-otg", .data = dwc2_set_amcc_params },
 	{ .compatible = "st,stm32f4x9-fsotg",
 	  .data = dwc2_set_stm32f4x9_fsotg_params },
 	{ .compatible = "st,stm32f4x9-hsotg" },

-- 
2.28.0