[PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[Fabio Estevam]

From: Jagan Teki <jagan@amarulasolutions.com>

Samsung MIPI DSIM bridge can be found on Exynos and NXP's
i.MX8M Mini and Nano SoC's.

Convert exynos_dsim.txt to yaml.

Used the example node from latest Exynos SoC instead of
the one used in legacy exynos_dsim.txt.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Fabio Estevam <festevam@denx.de>
---
 .../display/bridge/samsung,mipi-dsim.yaml     | 275 ++++++++++++++++++
 .../bindings/display/exynos/exynos_dsim.txt   |  92 ------
 2 files changed, 275 insertions(+), 92 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
 delete mode 100644 Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt

diff --git a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
new file mode 100644
index 000000000000..c131bd879caf
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
@@ -0,0 +1,275 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/samsung,mipi-dsim.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung MIPI DSIM bridge controller
+
+maintainers:
+  - Inki Dae <inki.dae@samsung.com>
+  - Jagan Teki <jagan@amarulasolutions.com>
+
+description: |
+  Samsung MIPI DSIM bridge controller can be found it on Exynos
+  and i.MX8M Mini and Nano SoC's.
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos3250-mipi-dsi
+      - samsung,exynos4210-mipi-dsi
+      - samsung,exynos5410-mipi-dsi
+      - samsung,exynos5422-mipi-dsi
+      - samsung,exynos5433-mipi-dsi
+      - fsl,imx8mm-mipi-dsim
+      - fsl,imx8mp-mipi-dsim
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  clocks:
+    minItems: 2
+    maxItems: 5
+
+  clock-names:
+    minItems: 2
+    maxItems: 5
+
+  phys:
+    maxItems: 1
+    description: phandle to the phy module representing the DPHY
+
+  phy-names:
+    items:
+      - const: dsim
+
+  samsung,phy-type:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: phandle to the samsung phy-type
+
+  power-domains:
+    description: phandle to the associated power domain
+    maxItems: 1
+
+  samsung,power-domain:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to the associated samsung power domain
+
+  vddcore-supply:
+    description: MIPI DSIM Core voltage supply (e.g. 1.1V)
+
+  vddio-supply:
+    description: MIPI DSIM I/O and PLL voltage supply (e.g. 1.8V)
+
+  samsung,burst-clock-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      DSIM high speed burst mode frequency.
+
+  samsung,esc-clock-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      DSIM escape mode frequency.
+
+  samsung,pll-clock-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      DSIM oscillator clock frequency.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        description:
+          Input port node to receive pixel data from the
+          display controller. Exactly one endpoint must be
+          specified.
+        properties:
+          endpoint@0:
+            $ref: /schemas/graph.yaml#/properties/endpoint
+            description: sub-node describing the input from MIC
+
+        unevaluatedProperties: false
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          DSI output port node to the panel or the next bridge
+          in the chain
+
+required:
+  - '#address-cells'
+  - '#size-cells'
+  - clock-names
+  - clocks
+  - compatible
+  - interrupts
+  - phy-names
+  - phys
+  - reg
+  - samsung,burst-clock-frequency
+  - samsung,esc-clock-frequency
+  - samsung,pll-clock-frequency
+
+allOf:
+  - $ref: ../dsi-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos5433-mipi-dsi
+
+    then:
+      properties:
+        clocks:
+          minItems: 5
+
+        clock-names:
+          items:
+            - const: bus_clk
+            - const: phyclk_mipidphy0_bitclkdiv8
+            - const: phyclk_mipidphy0_rxclkesc0
+            - const: sclk_rgb_vclk_to_dsim0
+            - const: sclk_mipi
+
+        ports:
+          required:
+            - port@0
+
+      required:
+        - ports
+        - vddcore-supply
+        - vddio-supply
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos5410-mipi-dsi
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+
+        clock-names:
+          items:
+            - const: bus_clk
+            - const: pll_clk
+
+      required:
+        - vddcore-supply
+        - vddio-supply
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos4210-mipi-dsi
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+
+        clock-names:
+          items:
+            - const: bus_clk
+            - const: sclk_mipi
+
+      required:
+        - vddcore-supply
+        - vddio-supply
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos3250-mipi-dsi
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+
+        clock-names:
+          items:
+            - const: bus_clk
+            - const: pll_clk
+
+      required:
+        - vddcore-supply
+        - vddio-supply
+        - samsung,phy-type
+
+additionalProperties:
+  type: object
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5433.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    dsi@13900000 {
+       compatible = "samsung,exynos5433-mipi-dsi";
+       reg = <0x13900000 0xC0>;
+       interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
+       phys = <&mipi_phy 1>;
+       phy-names = "dsim";
+       clocks = <&cmu_disp CLK_PCLK_DSIM0>,
+                <&cmu_disp CLK_PHYCLK_MIPIDPHY0_BITCLKDIV8>,
+                <&cmu_disp CLK_PHYCLK_MIPIDPHY0_RXCLKESC0>,
+                <&cmu_disp CLK_SCLK_RGB_VCLK_TO_DSIM0>,
+                <&cmu_disp CLK_SCLK_DSIM0>;
+       clock-names = "bus_clk",
+                     "phyclk_mipidphy0_bitclkdiv8",
+                     "phyclk_mipidphy0_rxclkesc0",
+                     "sclk_rgb_vclk_to_dsim0",
+                     "sclk_mipi";
+       power-domains = <&pd_disp>;
+       vddcore-supply = <&ldo6_reg>;
+       vddio-supply = <&ldo7_reg>;
+       samsung,burst-clock-frequency = <512000000>;
+       samsung,esc-clock-frequency = <16000000>;
+       samsung,pll-clock-frequency = <24000000>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&te_irq>;
+       status = "disabled";
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       panel@0 {
+          compatible = "samsung,s6e3ha2";
+          reg = <0>;
+          vdd3-supply = <&ldo27_reg>;
+          vci-supply = <&ldo28_reg>;
+          reset-gpios = <&gpg0 0 GPIO_ACTIVE_LOW>;
+          enable-gpios = <&gpf1 5 GPIO_ACTIVE_HIGH>;
+       };
+
+       ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+             reg = <0>;
+
+             dsi_to_mic: endpoint {
+                remote-endpoint = <&mic_to_dsi>;
+             };
+          };
+       };
+    };
diff --git a/Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt b/Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt
deleted file mode 100644
index 2a5f0889ec32..000000000000
--- a/Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt
+++ /dev/null
@@ -1,92 +0,0 @@
-Exynos MIPI DSI Master
-
-Required properties:
-  - compatible: value should be one of the following
-		"samsung,exynos3250-mipi-dsi" /* for Exynos3250/3472 SoCs */
-		"samsung,exynos4210-mipi-dsi" /* for Exynos4 SoCs */
-		"samsung,exynos5410-mipi-dsi" /* for Exynos5410/5420/5440 SoCs */
-		"samsung,exynos5422-mipi-dsi" /* for Exynos5422/5800 SoCs */
-		"samsung,exynos5433-mipi-dsi" /* for Exynos5433 SoCs */
-		"fsl,imx8mm-mipi-dsim" /* for i.MX8M Mini/Nano SoCs */
-		"fsl,imx8mp-mipi-dsim" /* for i.MX8M Plus SoCs */
-  - reg: physical base address and length of the registers set for the device
-  - interrupts: should contain DSI interrupt
-  - clocks: list of clock specifiers, must contain an entry for each required
-    entry in clock-names
-  - clock-names: should include "bus_clk"and "sclk_mipi" entries
-		 the use of "pll_clk" is deprecated
-  - phys: list of phy specifiers, must contain an entry for each required
-    entry in phy-names
-  - phy-names: should include "dsim" entry
-  - vddcore-supply: MIPI DSIM Core voltage supply (e.g. 1.1V)
-  - vddio-supply: MIPI DSIM I/O and PLL voltage supply (e.g. 1.8V)
-  - samsung,pll-clock-frequency: specifies frequency of the oscillator clock
-  - #address-cells, #size-cells: should be set respectively to <1> and <0>
-    according to DSI host bindings (see MIPI DSI bindings [1])
-  - samsung,burst-clock-frequency: specifies DSI frequency in high-speed burst
-    mode
-  - samsung,esc-clock-frequency: specifies DSI frequency in escape mode
-
-Optional properties:
-  - power-domains: a phandle to DSIM power domain node
-
-Child nodes:
-  Should contain DSI peripheral nodes (see MIPI DSI bindings [1]).
-
-Video interfaces:
-  Device node can contain following video interface port nodes according to [2]:
-  0: RGB input,
-  1: DSI output
-
-[1]: Documentation/devicetree/bindings/display/mipi-dsi-bus.txt
-[2]: Documentation/devicetree/bindings/media/video-interfaces.txt
-
-Example:
-
-	dsi@11c80000 {
-		compatible = "samsung,exynos4210-mipi-dsi";
-		reg = <0x11C80000 0x10000>;
-		interrupts = <0 79 0>;
-		clocks = <&clock 286>, <&clock 143>;
-		clock-names = "bus_clk", "sclk_mipi";
-		phys = <&mipi_phy 1>;
-		phy-names = "dsim";
-		vddcore-supply = <&vusb_reg>;
-		vddio-supply = <&vmipi_reg>;
-		power-domains = <&pd_lcd0>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		samsung,pll-clock-frequency = <24000000>;
-
-		panel@1 {
-			reg = <0>;
-			...
-			port {
-				panel_ep: endpoint {
-					remote-endpoint = <&dsi_ep>;
-				};
-			};
-		};
-
-		ports {
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			port@0 {
-				reg = <0>;
-				decon_to_mic: endpoint {
-					remote-endpoint = <&mic_to_decon>;
-				};
-			};
-
-			port@1 {
-				reg = <1>;
-				dsi_ep: endpoint {
-					reg = <0>;
-					samsung,burst-clock-frequency = <500000000>;
-					samsung,esc-clock-frequency = <20000000>;
-					remote-endpoint = <&panel_ep>;
-				};
-			};
-		};
-	};
-- 
2.34.1

Re: [PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[Jagan Teki]

 asOn Sat, Apr 1, 2023 at 1:27 AM Fabio Estevam <festevam@gmail.com> wrote:
>
> From: Jagan Teki <jagan@amarulasolutions.com>
>
> Samsung MIPI DSIM bridge can be found on Exynos and NXP's
> i.MX8M Mini and Nano SoC's.
>
> Convert exynos_dsim.txt to yaml.

Thanks for rebasing this.

>
> Used the example node from latest Exynos SoC instead of
> the one used in legacy exynos_dsim.txt.
>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Signed-off-by: Fabio Estevam <festevam@denx.de>
> ---
>  .../display/bridge/samsung,mipi-dsim.yaml     | 275 ++++++++++++++++++
>  .../bindings/display/exynos/exynos_dsim.txt   |  92 ------
>  2 files changed, 275 insertions(+), 92 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
>  delete mode 100644 Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml

Can you add this to the MAINTAINERS file.

> new file mode 100644
> index 000000000000..c131bd879caf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
> @@ -0,0 +1,275 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/samsung,mipi-dsim.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Samsung MIPI DSIM bridge controller
> +
> +maintainers:
> +  - Inki Dae <inki.dae@samsung.com>
> +  - Jagan Teki <jagan@amarulasolutions.com>

Please add Marek Szyprowski <m.szyprowski@samsung.com> well as he
included in the MAINTAINERS file.

Thanks,
Jagan.

Re: [PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[Marek Vasut]

On 3/31/23 21:57, Fabio Estevam wrote:
> From: Jagan Teki <jagan@amarulasolutions.com>
> 
> Samsung MIPI DSIM bridge can be found on Exynos and NXP's
> i.MX8M Mini and Nano SoC's.

MX8M Plus too .

> Convert exynos_dsim.txt to yaml.
> 
> Used the example node from latest Exynos SoC instead of
> the one used in legacy exynos_dsim.txt.
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Signed-off-by: Fabio Estevam <festevam@denx.de>
> ---
>   .../display/bridge/samsung,mipi-dsim.yaml     | 275 ++++++++++++++++++
>   .../bindings/display/exynos/exynos_dsim.txt   |  92 ------
>   2 files changed, 275 insertions(+), 92 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
>   delete mode 100644 Documentation/devicetree/bindings/display/exynos/exynos_dsim.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
> new file mode 100644
> index 000000000000..c131bd879caf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
> @@ -0,0 +1,275 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/samsung,mipi-dsim.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Samsung MIPI DSIM bridge controller
> +
> +maintainers:
> +  - Inki Dae <inki.dae@samsung.com>
> +  - Jagan Teki <jagan@amarulasolutions.com>
> +
> +description: |
> +  Samsung MIPI DSIM bridge controller can be found it on Exynos
> +  and i.MX8M Mini and Nano SoC's.

Plus too.

> +properties:
> +  compatible:
> +    enum:
> +      - samsung,exynos3250-mipi-dsi
> +      - samsung,exynos4210-mipi-dsi
> +      - samsung,exynos5410-mipi-dsi
> +      - samsung,exynos5422-mipi-dsi
> +      - samsung,exynos5433-mipi-dsi
> +      - fsl,imx8mm-mipi-dsim
> +      - fsl,imx8mp-mipi-dsim

You have plus here already, so just update the description.

> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
> +  clocks:
> +    minItems: 2
> +    maxItems: 5
> +
> +  clock-names:
> +    minItems: 2
> +    maxItems: 5
> +
> +  phys:
> +    maxItems: 1
> +    description: phandle to the phy module representing the DPHY
> +
> +  phy-names:
> +    items:
> +      - const: dsim
> +
> +  samsung,phy-type:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: phandle to the samsung phy-type
> +
> +  power-domains:
> +    description: phandle to the associated power domain
> +    maxItems: 1
> +
> +  samsung,power-domain:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: phandle to the associated samsung power domain
> +
> +  vddcore-supply:
> +    description: MIPI DSIM Core voltage supply (e.g. 1.1V)
> +
> +  vddio-supply:
> +    description: MIPI DSIM I/O and PLL voltage supply (e.g. 1.8V)
> +
> +  samsung,burst-clock-frequency:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      DSIM high speed burst mode frequency.
> +
> +  samsung,esc-clock-frequency:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      DSIM escape mode frequency.
> +
> +  samsung,pll-clock-frequency:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      DSIM oscillator clock frequency.
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        description:
> +          Input port node to receive pixel data from the
> +          display controller. Exactly one endpoint must be
> +          specified.
> +        properties:
> +          endpoint@0:

Why endpoint@0 if this only has one endpoint ?

> +            $ref: /schemas/graph.yaml#/properties/endpoint
> +            description: sub-node describing the input from MIC
> +
> +        unevaluatedProperties: false
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description:
> +          DSI output port node to the panel or the next bridge
> +          in the chain

[...]

Re: [PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[Krzysztof Kozlowski]

On 31/03/2023 21:57, Fabio Estevam wrote:
> From: Jagan Teki <jagan@amarulasolutions.com>
> 
> Samsung MIPI DSIM bridge can be found on Exynos and NXP's
> i.MX8M Mini and Nano SoC's.
> 
> Convert exynos_dsim.txt to yaml.
> 
> Used the example node from latest Exynos SoC instead of
> the one used in legacy exynos_dsim.txt.
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Signed-off-by: Fabio Estevam <festevam@denx.de>

Missing changelog. This is v13, not v1.

Best regards,
Krzysztof

Re: [PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[Marek Vasut]

On 3/31/23 21:57, Fabio Estevam wrote:

[...]

> +properties:
> +  compatible:
> +    enum:
> +      - samsung,exynos3250-mipi-dsi
> +      - samsung,exynos4210-mipi-dsi
> +      - samsung,exynos5410-mipi-dsi
> +      - samsung,exynos5422-mipi-dsi
> +      - samsung,exynos5433-mipi-dsi
> +      - fsl,imx8mm-mipi-dsim
> +      - fsl,imx8mp-mipi-dsim

Can you handle "fsl,imx8mn-mipi-dsim", "fsl,imx8mm-mipi-dsim" here too ?
The MX8MN DSIM bridge is compatible with MX8MM DSIM bridge. The change 
should be something like:

diff --git 
a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml 
b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
index 2698752dc6edf..6a30194d3347e 100644
--- 
a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
+++ 
b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
@@ -16,14 +16,18 @@ description: |

  properties:
    compatible:
-    enum:
-      - samsung,exynos3250-mipi-dsi
-      - samsung,exynos4210-mipi-dsi
-      - samsung,exynos5410-mipi-dsi
-      - samsung,exynos5422-mipi-dsi
-      - samsung,exynos5433-mipi-dsi
-      - fsl,imx8mm-mipi-dsim
-      - fsl,imx8mp-mipi-dsim
+    oneOf:
+      - enum:
+          - samsung,exynos3250-mipi-dsi
+          - samsung,exynos4210-mipi-dsi
+          - samsung,exynos5410-mipi-dsi
+          - samsung,exynos5422-mipi-dsi
+          - samsung,exynos5433-mipi-dsi
+          - fsl,imx8mm-mipi-dsim
+          - fsl,imx8mp-mipi-dsim
+      - items:
+          - const: fsl,imx8mn-mipi-dsim
+          - const: fsl,imx8mm-mipi-dsim

    reg:
      maxItems: 1

Re: [PATCH] dt-bindings: bridge: Convert Samsung MIPI DSIM bridge to yaml

[Marek Vasut]

On 3/31/23 21:57, Fabio Estevam wrote:
[...]

> -Example:
> -
> -	dsi@11c80000 {
> -		compatible = "samsung,exynos4210-mipi-dsi";
> -		reg = <0x11C80000 0x10000>;
> -		interrupts = <0 79 0>;
> -		clocks = <&clock 286>, <&clock 143>;
> -		clock-names = "bus_clk", "sclk_mipi";
> -		phys = <&mipi_phy 1>;
> -		phy-names = "dsim";
> -		vddcore-supply = <&vusb_reg>;
> -		vddio-supply = <&vmipi_reg>;
> -		power-domains = <&pd_lcd0>;
> -		#address-cells = <1>;
> -		#size-cells = <0>;

(*)

> -		samsung,pll-clock-frequency = <24000000>;
> -
> -		panel@1 {
> -			reg = <0>;
> -			...
> -			port {
> -				panel_ep: endpoint {
> -					remote-endpoint = <&dsi_ep>;
> -				};
> -			};
> -		};
> -
> -		ports {
> -			#address-cells = <1>;
> -			#size-cells = <0>;

You likely don't need the address/size cells here if the super-node 
already defined those (*) above