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Date: Thu, 27 Feb 2020 18:02:44 +0100
From: "H. Nikolaus Schaller" <hns@...delico.com>
To: Sam Ravnborg <sam@...nborg.org>
Cc: Paul Cercueil <paul@...pouillou.net>,
Paul Boddie <paul@...die.org.uk>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Ralf Baechle <ralf@...ux-mips.org>,
Paul Burton <paulburton@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Andi Kleen <ak@...ux.intel.com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
dri-devel@...ts.freedesktop.org, linux-mips@...r.kernel.org,
linux-gpio@...r.kernel.org, kernel@...a-handheld.com,
letux-kernel@...nphoenux.org
Subject: Re: [RFC 0/8] MIPS: CI20: add HDMI out support
Hi Sam,
great. Thank you very much!
> Am 27.02.2020 um 17:57 schrieb Sam Ravnborg <sam@...nborg.org>:
>
> Hi Nikolaus.
>
>>>> Zubair Lutfullah Kakakhel (2):
>>>> dt-bindings: video: Add jz4780-lcd binding
>>>> dt-bindings: video: Add jz4780-hdmi binding
>>>>
>>>> .../bindings/display/ingenic-jz4780-hdmi.txt | 41 ++++++
>>>> .../bindings/display/ingenic-jz4780-lcd.txt | 39 ++++++
>>> New bindings in DT Schema format please...
>>> We want to have then in a formal launguage so we can use these
>>> to verify the DT files.
>>
>> Yes, I know. And I fully support the goal.
>>
>> But I personally do not have the time to learn the (IMHO brain-twisting)
>> way the Schema format is working. Especially, I am not interested
>> in becoming volunteer translator for .txt based schemas developed
>> by someone else.
>>
>> So I hope that someone from the community can and is willing to do
>> that.
>
> I went ahead and typed them - please review and use these if OK.
>
> Sam
>
> From 6fee276807dfe4a502ff760e7c7840480d275052 Mon Sep 17 00:00:00 2001
> From: Sam Ravnborg <sam@...nborg.org>
> Date: Thu, 27 Feb 2020 17:18:29 +0100
> Subject: [PATCH 1/2] dt-bindings: display: add ingenic-jz4780-lcd DT Schema
>
> Add DT bindings for the LCD controller on the jz4780 SoC
> Based on .txt binding from Zubair Lutfullah Kakakhel
>
> Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
> Cc: H. Nikolaus Schaller <hns@...delico.com>
> Cc: Rob Herring <robh@...nel.org>
> Cc: devicetree@...r.kernel.org
> ---
> .../bindings/display/ingenic-jz4780-lcd.yaml | 78 +++++++++++++++++++
> 1 file changed, 78 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.yaml b/Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.yaml
> new file mode 100644
> index 000000000000..c71415a3a342
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.yaml
> @@ -0,0 +1,78 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/ingenic-jz4780-lcd.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Bindings for Ingenic JZ4780 LCD Controller
> +
> +maintainers:
> + - Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
> + - H. Nikolaus Schaller <hns@...delico.com>
> +
> +description: |
> + LCD Controller is the Display Controller for the Ingenic JZ4780 SoC
> +
> +properties:
> + compatible:
> + items:
> + - const: ingenic,jz4780-lcd
> +
> + reg:
> + maxItems: 1
> + description: the address & size of the LCD controller registers
> +
> + interrupts:
> + maxItems: 1
> + description: Specifies the interrupt provided by parent
> +
> + clocks:
> + maxItems: 2
> + description: Clock specifiers for the JZ4780_CLK_TVE JZ4780_CLK_LCD0PIXCLK
> +
> + clock-names:
> + items:
> + - const: lcd_clk
> + - const: lcd_pixclk
> +
> + port:
> + type: object
> + description: |
> + A port node with endpoint definitions as defined in
> + Documentation/devicetree/bindings/media/video-interfaces.txt
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - port
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/jz4780-cgu.h>
> + lcd: jz4780-lcdk@...3050000 {
> + compatible = "ingenic,jz4780-lcd";
> + reg = <0x13050000 0x1800>;
> +
> + clocks = <&cgu JZ4780_CLK_TVE>, <&cgu JZ4780_CLK_LCD0PIXCLK>;
> + clock-names = "lcd_clk", "lcd_pixclk";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <31>;
> +
> + jz4780_lcd_out: port {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + jz4780_out_hdmi: endpoint@0 {
> + reg = <0>;
> + remote-endpoint = <&hdmi_in_lcd>;
> + };
> + };
> + };
> +
> +...
> --
> 2.20.1
>
> From f4d01a657e07d468eb0bc811ed8edae0b58d66d7 Mon Sep 17 00:00:00 2001
> From: Sam Ravnborg <sam@...nborg.org>
> Date: Thu, 27 Feb 2020 17:52:34 +0100
> Subject: [PATCH 2/2] dt-bindings: display: add ingenic-jz4780-ihdmi DT Schema
>
> Add DT bindings for the hdmi driver for the Ingenic JZ4780 SoC.
> Based on .txt binding from Zubair Lutfullah Kakakhel
>
> Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
> Cc: H. Nikolaus Schaller <hns@...delico.com>
> Cc: Rob Herring <robh@...nel.org>
> Cc: devicetree@...r.kernel.org
> ---
> .../bindings/display/ingenic-jz4780-hdmi.yaml | 83 +++++++++++++++++++
> 1 file changed, 83 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml b/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml
> new file mode 100644
> index 000000000000..9b71c427bd69
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/ingenic-jz4780-hdmi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Bindings for Ingenic JZ4780 HDMI Transmitter
> +
> +maintainers:
> + - Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
> + - H. Nikolaus Schaller <hns@...delico.com>
> +
> +description: |
> + The HDMI Transmitter in the Ingenic JZ4780 is a Synopsys DesignWare HDMI 1.4
> + TX controller IP with accompanying PHY IP.
> +
> +allOf:
> + - $ref: panel/panel-common.yaml#
> +
> +properties:
> + compatible:
> + items:
> + - const: ingenic,jz4780-hdmi
> +
> + reg:
> + maxItems: 1
> + description: the address & size of the LCD controller registers
> +
> + reg-io-width:
> + const: 4
> +
> + interrupts:
> + maxItems: 1
> + description: Specifies the interrupt provided by parent
> +
> + clocks:
> + maxItems: 2
> + description: Clock specifiers for isrf and iahb clocks
> +
> + clock-names:
> + items:
> + - const: isfr
> + - const: iahb
> +
> + ddc-i2c-bus: true
> + ports: true
> +
> +required:
> + - compatible
> + - clocks
> + - clock-names
> + - ports
> + - reg-io-width
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/jz4780-cgu.h>
> +
> + hdmi: hdmi@...80000 {
> + compatible = "ingenic,jz4780-hdmi";
> + reg = <0x10180000 0x8000>;
> + reg-io-width = <4>;
> + ddc-i2c-bus = <&i2c4>;
> + interrupt-parent = <&intc>;
> + interrupts = <3>;
> + clocks = <&cgu JZ4780_CLK_HDMI>, <&cgu JZ4780_CLK_AHB0>;
> + clock-names = "isfr", "iahb";
> +
> + ports {
> + hdmi_in: port {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + hdmi_in_lcd: endpoint@0 {
> + reg = <0>;
> + remote-endpoint = <&jz4780_out_hdmi>;
> + };
> + };
> + };
> + };
> +
> +...
> --
> 2.20.1
>
I'll integrate into v2.
Now we need to make the HDMI output show something...
BR,
Nikolaus
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