[PATCH 0/2] Add USBHS support for RZ/T2H and RZ/N2H SoCs

[PATCH 0/2] Add USBHS support for RZ/T2H and RZ/N2H SoCs

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Hi All,

This patch series adds support for the USBHS controller on the Renesas
RZ/T2H (r9a09g077) and RZ/N2H (r9a09g087) SoCs. The USBHS controller on
these SoCs is functionally similar to the one found on the RZ/G2L, but
there are some differences in terms of interrupt configuration,
clock/reset requirements, and register bit definitions.

The first patch updates the device tree bindings to include these SoCs,
while the second patch modifies the USBHS driver to recognize the new
compatible strings and use the existing platform information for the
RZ/G2L.

Cheers,
Prabhakar

Lad Prabhakar (2):
  dt-bindings: usb: renesas,usbhs: Add RZ/T2H and RZ/N2H support
  usb: renesas_usbhs: Add support for RZ/T2H SoC

 .../bindings/usb/renesas,usbhs.yaml           | 28 +++++++++++++++++--
 drivers/usb/renesas_usbhs/common.c            |  4 +++
 2 files changed, 29 insertions(+), 3 deletions(-)

-- 
2.50.1

[PATCH 1/2] dt-bindings: usb: renesas,usbhs: Add RZ/T2H and RZ/N2H support

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Document the USBHS controller for the Renesas RZ/T2H (r9a09g077) and
RZ/N2H (r9a09g087) SoCs. While the USBHS block is similar to the one found
on the RZ/G2L SoC, it differs slightly in terms of interrupt configuration,
clock/reset requirements, and register bit definitions. Due to these
differences, a new compatible string `renesas,usbhs-r9a09g077` is
introduced for the RZ/T2H SoC.

The USBHS controller on the RZ/N2H (r9a09g087) SoC is identical to that on
the RZ/T2H, so it uses the `renesas,usbhs-r9a09g077` compatible string as
a fallback.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 .../bindings/usb/renesas,usbhs.yaml           | 28 +++++++++++++++++--
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/renesas,usbhs.yaml b/Documentation/devicetree/bindings/usb/renesas,usbhs.yaml
index a19816bbb1fd..0b8b90dd1951 100644
--- a/Documentation/devicetree/bindings/usb/renesas,usbhs.yaml
+++ b/Documentation/devicetree/bindings/usb/renesas,usbhs.yaml
@@ -59,6 +59,12 @@ properties:
               - renesas,usbhs-r8a77995 # R-Car D3
           - const: renesas,rcar-gen3-usbhs
 
+      - const: renesas,usbhs-r9a09g077 # RZ/T2H
+
+      - items:
+          - const: renesas,usbhs-r9a09g087 # RZ/N2H
+          - const: renesas,usbhs-r9a09g077 # RZ/T2H
+
   reg:
     maxItems: 1
 
@@ -141,9 +147,25 @@ allOf:
       required:
         - resets
     else:
-      properties:
-        interrupts:
-          maxItems: 1
+      if:
+        properties:
+          compatible:
+            contains:
+              const: renesas,usbhs-r9a09g077
+      then:
+        properties:
+          resets: false
+          clocks:
+            maxItems: 1
+          interrupts:
+            items:
+              - description: USB function interrupt USB_FI
+              - description: USB function DMA0 transmit completion interrupt USB_FDMA0
+              - description: USB function DMA1 transmit completion interrupt USB_FDMA1
+      else:
+        properties:
+          interrupts:
+            maxItems: 1
 
 additionalProperties: false
 
-- 
2.50.1

Re: [PATCH 1/2] dt-bindings: usb: renesas,usbhs: Add RZ/T2H and RZ/N2H support

[Conor Dooley]

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On Tue, Aug 05, 2025 at 12:47:29PM +0100, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> 
> Document the USBHS controller for the Renesas RZ/T2H (r9a09g077) and
> RZ/N2H (r9a09g087) SoCs. While the USBHS block is similar to the one found
> on the RZ/G2L SoC, it differs slightly in terms of interrupt configuration,
> clock/reset requirements, and register bit definitions. Due to these
> differences, a new compatible string `renesas,usbhs-r9a09g077` is
> introduced for the RZ/T2H SoC.
> 
> The USBHS controller on the RZ/N2H (r9a09g087) SoC is identical to that on
> the RZ/T2H, so it uses the `renesas,usbhs-r9a09g077` compatible string as
> a fallback.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

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[PATCH 2/2] usb: renesas_usbhs: Add support for RZ/T2H SoC

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Add support for the Renesas RZ/T2H (r9a09g077) SoC by adding a compatible
string to the usbhs_of_match table. The USBHS controller on the RZ/T2H is
functionally similar to the one found on the RZ/G2L. While there are minor
differences in register fields (for example, the AWAIT[8:13] bits in
SYSCFG1 register), the current driver does not configure these, allowing
reuse of the existing usbhs_rzg2l_plat_info for the RZ/T2H.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/usb/renesas_usbhs/common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 18a6ef4dce51..8f536f2c500f 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -579,6 +579,10 @@ static const struct of_device_id usbhs_of_match[] = {
 		.compatible = "renesas,usbhs-r9a07g054",
 		.data = &usbhs_rzg2l_plat_info,
 	},
+	{
+		.compatible = "renesas,usbhs-r9a09g077",
+		.data = &usbhs_rzg2l_plat_info,
+	},
 	{
 		.compatible = "renesas,rcar-gen2-usbhs",
 		.data = &usbhs_rcar_gen2_plat_info,
-- 
2.50.1