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[PATCH v3 1/3] dt-bindings: interrupt-controller: Add Sophgo SG2042 MSI

Chen Wang posted 3 patches 11 months ago
There is a newer version of this series
[PATCH v3 1/3] dt-bindings: interrupt-controller: Add Sophgo SG2042 MSI
Posted by Chen Wang 11 months ago 
From: Chen Wang <unicorn_wang@outlook.com>

Add binding for Sophgo SG2042 MSI controller.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
---
 .../sophgo,sg2042-msi.yaml                    | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
new file mode 100644
index 000000000000..f641df191787
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/sophgo,sg2042-msi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 MSI Controller
+
+maintainers:
+  - Chen Wang <unicorn_wang@outlook.com>
+
+description:
+  This interrupt controller is in Sophgo SG2042 for transforming interrupts from
+  PCIe MSI to PLIC interrupts.
+
+allOf:
+  - $ref: /schemas/interrupts.yaml#
+  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
+
+properties:
+  compatible:
+    const: sophgo,sg2042-msi
+
+  reg:
+    items:
+      - description: msi doorbell address
+      - description: clear register
+
+  reg-names:
+    items:
+      - const: doorbell
+      - const: clr
+
+  msi-controller: true
+
+  msi-ranges:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - msi-controller
+  - msi-ranges
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    msi-controller@30000000 {
+      compatible = "sophgo,sg2042-msi";
+      reg = <0x30000000 0x4>, <0x30000008 0x4>;
+      reg-names = "doorbell", "clr";
+      msi-controller;
+      msi-ranges = <&plic 64 IRQ_TYPE_LEVEL_HIGH 32>;
+      interrupt-parent = <&plic>;
+    };
-- 
2.34.1
Re: [PATCH v3 1/3] dt-bindings: interrupt-controller: Add Sophgo SG2042 MSI
Posted by Rob Herring 10 months, 3 weeks ago 
On Wed, Jan 15, 2025 at 02:33:23PM +0800, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@outlook.com>
> 
> Add binding for Sophgo SG2042 MSI controller.
> 
> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
> ---
>  .../sophgo,sg2042-msi.yaml                    | 58 +++++++++++++++++++
>  1 file changed, 58 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> new file mode 100644
> index 000000000000..f641df191787
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/sophgo,sg2042-msi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo SG2042 MSI Controller
> +
> +maintainers:
> +  - Chen Wang <unicorn_wang@outlook.com>
> +
> +description:
> +  This interrupt controller is in Sophgo SG2042 for transforming interrupts from
> +  PCIe MSI to PLIC interrupts.
> +
> +allOf:
> +  - $ref: /schemas/interrupts.yaml#

Drop this.

> +  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
> +
> +properties:
> +  compatible:
> +    const: sophgo,sg2042-msi
> +
> +  reg:
> +    items:
> +      - description: msi doorbell address
> +      - description: clear register
> +
> +  reg-names:
> +    items:
> +      - const: doorbell
> +      - const: clr
> +
> +  msi-controller: true
> +
> +  msi-ranges:
> +    maxItems: 1

You need #msi-cells.

> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - msi-controller
> +  - msi-ranges
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    msi-controller@30000000 {
> +      compatible = "sophgo,sg2042-msi";
> +      reg = <0x30000000 0x4>, <0x30000008 0x4>;
> +      reg-names = "doorbell", "clr";
> +      msi-controller;
> +      msi-ranges = <&plic 64 IRQ_TYPE_LEVEL_HIGH 32>;
> +      interrupt-parent = <&plic>;
> +    };
> -- 
> 2.34.1
>
Re: [PATCH v3 1/3] dt-bindings: interrupt-controller: Add Sophgo SG2042 MSI
Posted by Inochi Amaoto 11 months ago 
On Wed, Jan 15, 2025 at 02:33:23PM +0800, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@outlook.com>
> 
> Add binding for Sophgo SG2042 MSI controller.
> 
> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
> ---
>  .../sophgo,sg2042-msi.yaml                    | 58 +++++++++++++++++++
>  1 file changed, 58 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> new file mode 100644
> index 000000000000..f641df191787
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/sophgo,sg2042-msi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo SG2042 MSI Controller
> +
> +maintainers:
> +  - Chen Wang <unicorn_wang@outlook.com>
> +
> +description:
> +  This interrupt controller is in Sophgo SG2042 for transforming interrupts from
> +  PCIe MSI to PLIC interrupts.
> +
> +allOf:
> +  - $ref: /schemas/interrupts.yaml#
> +  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
> +
> +properties:
> +  compatible:
> +    const: sophgo,sg2042-msi
> +
> +  reg:
> +    items:
> +      - description: msi doorbell address
> +      - description: clear register
> +
> +  reg-names:
> +    items:

> +      - const: doorbell
> +      - const: clr

please reverse the items order, the clr addr is more suitable
as the MMIO device address when writing device node. doorbeel
address is just a IO address and can not be seen from CPU.

> +
> +  msi-controller: true
> +
> +  msi-ranges:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - msi-controller
> +  - msi-ranges
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    msi-controller@30000000 {
> +      compatible = "sophgo,sg2042-msi";
> +      reg = <0x30000000 0x4>, <0x30000008 0x4>;
> +      reg-names = "doorbell", "clr";
> +      msi-controller;
> +      msi-ranges = <&plic 64 IRQ_TYPE_LEVEL_HIGH 32>;
> +      interrupt-parent = <&plic>;
> +    };
> -- 
> 2.34.1
> 
> 
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