diff mbox series

[v3,1/5] dt-bindings: display: Add Apple pre-DCP display controller

Message ID 20250112-adpdrm-v3-1-c674dc19fa7f@gmail.com (mailing list archive)
State New
Headers show
Series Driver for pre-DCP apple display controller. | expand

Commit Message

Sasha Finkelstein via B4 Relay Jan. 12, 2025, 8:43 p.m. UTC 
From: Sasha Finkelstein <fnkl.kernel@gmail.com>

Add bindings for a secondary display controller present on certain
Apple laptops.

Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
---
 .../display/apple,h7-display-pipe-mipi.yaml        | 79 +++++++++++++++++++
 .../bindings/display/apple,h7-display-pipe.yaml    | 88 ++++++++++++++++++++++
 .../bindings/display/panel/apple,summit.yaml       | 58 ++++++++++++++
 3 files changed, 225 insertions(+)

Comments

Krzysztof Kozlowski Jan. 13, 2025, 8:58 a.m. UTC | #1 
On Sun, Jan 12, 2025 at 09:43:48PM +0100, Sasha Finkelstein wrote:
 +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Input port. Always connected to the primary controller
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Output MIPI DSI port to the panel
> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - reg
> +  - ports
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    dsi@228200000 {
> +        compatible = "apple,t8103-display-pipe-mipi", "apple,h7-display-pipe-mipi";
> +        reg = <0x28200000 0xc000>;

This looks not matching unit address.

> +        power-domains = <&ps_dispdfr_mipi>;
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +                #address-cells = <1>;
> +                #size-cells = <0>;

Make the example complete, so you will see that address/size cells are
unnecessary here or, if you really have more than one endpoint, they are
supposed to be here.

> +            };
> +
> +            port@1 {
> +                reg = <1>;
> +                #address-cells = <1>;
> +                #size-cells = <0>;
> +            };
> +        };
> +    };
> +...
> diff --git a/Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml b/Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..dc07edccb437b221ea9772b9356e1896326aa7da
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml
> @@ -0,0 +1,88 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/apple,h7-display-pipe.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Apple pre-DCP display controller
> +
> +maintainers:
> +  - Sasha Finkelstein <fnkl.kernel@gmail.com>
> +
> +description:
> +  A secondary display controller used to drive the "touchbar" on
> +  certain Apple laptops.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - apple,t8112-display-pipe
> +          - apple,t8103-display-pipe
> +      - const: apple,h7-display-pipe
> +
> +  reg:
> +    maxItems: 2
> +
> +  reg-names:
> +    items:
> +      - const: be
> +        description: Primary register block, controls planes and blendinga

Description goes to 'reg:' field, just like I asked last time.

> +      - const: fe
> +        description:
> +          Contains other configuration registers like interrupt
> +          and FIFO control
> +
> +  power-domains:
> +    description:
> +      Phandles to pmgr entries that are needed for this controller to turn on.
> +      Aside from that, their specific functions are unknown
> +    maxItems: 2
> +
> +  interrupts:

Same comments as before - list and describe the items.

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/apple,h7-display-pipe-mipi.yaml b/Documentation/devicetree/bindings/display/apple,h7-display-pipe-mipi.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..b898c472962a2aec2aed6870e29b94f0ad356bd3
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/apple,h7-display-pipe-mipi.yaml
@@ -0,0 +1,79 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/apple,h7-display-pipe-mipi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple pre-DCP display controller MIPI interface
+
+maintainers:
+  - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description:
+  The MIPI controller part of the pre-DCP Apple display controller
+
+allOf:
+  - $ref: dsi-controller.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,t8112-display-pipe-mipi
+          - apple,t8103-display-pipe-mipi
+      - const: apple,h7-display-pipe-mipi
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input port. Always connected to the primary controller
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Output MIPI DSI port to the panel
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - ports
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    dsi@228200000 {
+        compatible = "apple,t8103-display-pipe-mipi", "apple,h7-display-pipe-mipi";
+        reg = <0x28200000 0xc000>;
+        power-domains = <&ps_dispdfr_mipi>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+            };
+
+            port@1 {
+                reg = <1>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+            };
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml b/Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..dc07edccb437b221ea9772b9356e1896326aa7da
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml
@@ -0,0 +1,88 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/apple,h7-display-pipe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple pre-DCP display controller
+
+maintainers:
+  - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description:
+  A secondary display controller used to drive the "touchbar" on
+  certain Apple laptops.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,t8112-display-pipe
+          - apple,t8103-display-pipe
+      - const: apple,h7-display-pipe
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: be
+        description: Primary register block, controls planes and blending
+      - const: fe
+        description:
+          Contains other configuration registers like interrupt
+          and FIFO control
+
+  power-domains:
+    description:
+      Phandles to pmgr entries that are needed for this controller to turn on.
+      Aside from that, their specific functions are unknown
+    maxItems: 2
+
+  interrupts:
+    maxItems: 2
+
+  interrupt-names:
+    items:
+      - const: be
+        description: Unknown function
+      - const: fe
+        description: Primary interrupt. Vsync events are reported via it
+
+  iommus:
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: Output port. Always connected to apple,h7-display-pipe-mipi
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/apple-aic.h>
+    display-pipe@28200000 {
+        compatible = "apple,t8103-display-pipe", "apple,h7-display-pipe";
+        reg = <0x28200000 0xc000>,
+              <0x28400000 0x4000>;
+        reg-names = "be", "fe";
+        power-domains = <&ps_dispdfr_fe>, <&ps_dispdfr_be>;
+        interrupt-parent = <&aic>;
+        interrupts = <AIC_IRQ 502 IRQ_TYPE_LEVEL_HIGH>,
+                     <AIC_IRQ 506 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "be", "fe";
+        iommus = <&displaydfr_dart 0>;
+
+        port {
+            dfr_adp_out_mipi: endpoint {
+                remote-endpoint = <&dfr_mipi_in_adp>;
+            };
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/display/panel/apple,summit.yaml b/Documentation/devicetree/bindings/display/panel/apple,summit.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..f081755325e97ad58b831893b84082cc10f8d5e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/apple,summit.yaml
@@ -0,0 +1,58 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/apple,summit.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple "Summit" display panel
+
+maintainers:
+  - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description:
+  An OLED panel used as a touchbar on certain Apple laptops.
+  Contains a backlight device, which controls brightness of the panel itself.
+  The backlight common properties are included for this reason
+
+allOf:
+  - $ref: panel-common.yaml#
+  - $ref: /schemas/leds/backlight/common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,j293-summit
+          - apple,j493-summit
+      - const: apple,summit
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - max-brightness
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "apple,j293-summit", "apple,summit";
+            reg = <0>;
+            max-brightness = <255>;
+
+            port {
+                endpoint {
+                    remote-endpoint = <&dfr_bridge_out>;
+                };
+            };
+        };
+    };
+...