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Message-ID: <042523f7-2b75-4a04-8e0b-d1019ab84987@kernel.org>
Date: Thu, 4 Sep 2025 07:49:46 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: syyang <syyang@...tium.com>, robh@...nel.org
Cc: Laurent.pinchart@...asonboard.com, andrzej.hajda@...el.com,
 conor+dt@...nel.org, devicetree@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, jernej.skrabec@...il.com, jonas@...boo.se,
 krzk+dt@...nel.org, linux-kernel@...r.kernel.org, neil.armstrong@...aro.org,
 rfoss@...nel.org, yangsunyun1993@...il.com
Subject: Re: [PATCH v2 1/2] This patch adds a new device tree binding
 documentation.

On 04/09/2025 04:25, syyang wrote:
> Fix device tree binding validation errors reported by Rob Herring.
> 
> v2:

That's not the place where you put changelog.

> - Fixed $id field to match actual filename (lontium,lt9611c.yaml)
> - build pass
> 
> Thanks to Rob Herring for the review and feedback.

Please carefully read submitting patches.

Do not attach (thread) your patchsets to some other threads (unrelated
or older versions). This buries them deep in the mailbox and might
interfere with applying entire sets. See also:
https://elixir.bootlin.com/linux/v6.16-rc2/source/Documentation/process/submitting-patches.rst#L830

Please use subject prefixes matching the subsystem. You can get them for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching. For bindings, the preferred subjects are
explained here:
https://www.kernel.org/doc/html/latest/devicetree/bindings/submitting-patches.html#i-for-patch-submitters

> 
> Signed-off-by: syyang <syyang@...tium.com>
> ---
>  .../display/bridge/lontium,lt9611c.yaml       | 121 ++++++++++++++++++
>  1 file changed, 121 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/lontium,lt9611c.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt9611c.yaml b/Documentation/devicetree/bindings/display/bridge/lontium,lt9611c.yaml
> new file mode 100644
> index 000000000000..712644da4f1d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt9611c.yaml
> @@ -0,0 +1,121 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/lontium,lt9611c.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Lontium LT9611C 2 Port MIPI to HDMI Bridge
> +
> +maintainers:
> +  - Rob Herring <robh@...nel.org>

No, how so?

> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> +  The LT9611C are bridge devices which convert DSI to HDMI

Why this cannot be added to lt9611 binding? Commit msg should clearly
answer that.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - lontium,lt9611c
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#sound-dai-cells":

Missing dai-common ref.

> +    const: 0
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: GPIO connected to active high RESET pin.
> +
> +  vdd-supply:
> +    description: Regulator for 1.2V MIPI phy power.
> +
> +  vcc-supply:
> +    description: Regulator for 3.3V IO power.
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description:
> +          Primary MIPI port-1 for MIPI input
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description:
> +          Additional MIPI port-2 for MIPI input, used in combination
> +          with primary MIPI port-1 to drive higher resolution displays
> +
> +      port@2:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description:
> +          HDMI port for HDMI output
> +
> +    required:
> +      - port@0
> +      - port@2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - vdd-supply
> +  - vcc-supply
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c10 {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      hdmi-bridge@41 {
> +        compatible = "lontium,lt9611c";
> +        reg = <0x41>;
> +        #sound-dai-cells = <0>;
> +        interrupts-extended = <&pio 128 GPIO_ACTIVE_HIGH>;
> +        reset-gpios = <&pio 127 GPIO_ACTIVE_HIGH>;
> +        vdd-supply = <&lt9611_1v2>;
> +        vcc-supply = <&lt9611_3v3>;
> +        status = "okay";

Nope, drop.



Best regards,
Krzysztof

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