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Date: Wed, 4 May 2022 16:15:53 +0800
From: Rex-BC Chen <rex-bc.chen@...iatek.com>
To: Rob Herring <robh@...nel.org>
CC: <krzysztof.kozlowski+dt@...aro.org>, <chunkuang.hu@...nel.org>,
<p.zabel@...gutronix.de>, <airlied@...ux.ie>, <daniel@...ll.ch>,
<matthias.bgg@...il.com>, <jitao.shi@...iatek.com>,
<xinlei.lee@...iatek.com>, <dri-devel@...ts.freedesktop.org>,
<linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v5 1/4] dt-bindings: display: mediatek: dsi: Convert
dsi_dtbinding to .yaml
On Tue, 2022-05-03 at 13:01 -0500, Rob Herring wrote:
> On Thu, Apr 28, 2022 at 09:37:50PM +0800, Rex-BC Chen wrote:
> > From: Xinlei Lee <xinlei.lee@...iatek.com>
> >
> > Convert mediatek,dsi.txt to mediatek,dsi.yaml format
> >
> > Signed-off-by: Xinlei Lee <xinlei.lee@...iatek.com>
> > Signed-off-by: Rex-BC Chen <rex-bc.chen@...iatek.com>
> > ---
> > .../display/mediatek/mediatek,dsi.txt | 62 ---------
> > .../display/mediatek/mediatek,dsi.yaml | 122
> > ++++++++++++++++++
> > 2 files changed, 122 insertions(+), 62 deletions(-)
> > delete mode 100644
> > Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
> > create mode 100644
> > Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yam
> > l
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.t
> > xt
> > b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.t
> > xt
> > deleted file mode 100644
> > index 36b01458f45c..000000000000
> > ---
> > a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.t
> > xt
> > +++ /dev/null
> > @@ -1,62 +0,0 @@
> > -Mediatek DSI Device
> > -===================
> > -
> > -The Mediatek DSI function block is a sink of the display subsystem
> > and can
> > -drive up to 4-lane MIPI DSI output. Two DSIs can be synchronized
> > for dual-
> > -channel output.
> > -
> > -Required properties:
> > -- compatible: "mediatek,<chip>-dsi"
> > -- the supported chips are mt2701, mt7623, mt8167, mt8173 and
> > mt8183.
> > -- reg: Physical base address and length of the controller's
> > registers
> > -- interrupts: The interrupt signal from the function block.
> > -- clocks: device clocks
> > - See Documentation/devicetree/bindings/clock/clock-bindings.txt
> > for details.
> > -- clock-names: must contain "engine", "digital", and "hs"
> > -- phys: phandle link to the MIPI D-PHY controller.
> > -- phy-names: must contain "dphy"
> > -- port: Output port node with endpoint definitions as described in
> > - Documentation/devicetree/bindings/graph.txt. This port should be
> > connected
> > - to the input port of an attached DSI panel or DSI-to-eDP encoder
> > chip.
> > -
> > -Optional properties:
> > -- resets: list of phandle + reset specifier pair, as described in
> > [1].
> > -
> > -[1] Documentation/devicetree/bindings/reset/reset.txt
> > -
> > -MIPI TX Configuration Module
> > -============================
> > -
> > -See phy/mediatek,dsi-phy.yaml
> > -
> > -Example:
> > -
> > -mipi_tx0: mipi-dphy@...15000 {
> > - compatible = "mediatek,mt8173-mipi-tx";
> > - reg = <0 0x10215000 0 0x1000>;
> > - clocks = <&clk26m>;
> > - clock-output-names = "mipi_tx0_pll";
> > - #clock-cells = <0>;
> > - #phy-cells = <0>;
> > - drive-strength-microamp = <4600>;
> > - nvmem-cells= <&mipi_tx_calibration>;
> > - nvmem-cell-names = "calibration-data";
> > -};
> > -
> > -dsi0: dsi@...1b000 {
> > - compatible = "mediatek,mt8173-dsi";
> > - reg = <0 0x1401b000 0 0x1000>;
> > - interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_LOW>;
> > - clocks = <&mmsys MM_DSI0_ENGINE>, <&mmsys MM_DSI0_DIGITAL>,
> > - <&mipi_tx0>;
> > - clock-names = "engine", "digital", "hs";
> > - resets = <&mmsys MT8173_MMSYS_SW0_RST_B_DISP_DSI0>;
> > - phys = <&mipi_tx0>;
> > - phy-names = "dphy";
> > -
> > - port {
> > - dsi0_out: endpoint {
> > - remote-endpoint = <&panel_in>;
> > - };
> > - };
> > -};
> > diff --git
> > a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.y
> > aml
> > b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.y
> > aml
> > new file mode 100644
> > index 000000000000..2ca9229ef69e
> > --- /dev/null
> > +++
> > b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.y
> > aml
> > @@ -0,0 +1,122 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id:
> > https://urldefense.com/v3/__http://devicetree.org/schemas/display/mediatek/mediatek,dsi.yaml*__;Iw!!CTRNKA9wMg0ARbw!w60__6oza0dggkQt6zWF-ZnYUKobclO7i3x9kiS1CETGQlCVcifs6UfqytY8vunKIJlM$
> >
> > +$schema:
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!w60__6oza0dggkQt6zWF-ZnYUKobclO7i3x9kiS1CETGQlCVcifs6UfqytY8vns85I56$
> >
> > +
> > +title: MediaTek DSI Controller Device Tree Bindings
> > +
> > +maintainers:
> > + - Chun-Kuang Hu <chunkuang.hu@...nel.org>
> > + - Philipp Zabel <p.zabel@...gutronix.de>
> > + - Jitao Shi <jitao.shi@...iatek.com>
> > + - Xinlei Lee <xinlei.lee@...iatek.com>
> > +
> > +description: |
> > + The MediaTek DSI function block is a sink of the display
> > subsystem and can
> > + drive up to 4-lane MIPI DSI output. Two DSIs can be synchronized
> > for dual-
> > + channel output.
> > +
> > +allOf:
> > + - $ref: /schemas/display/dsi-controller.yaml#
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - mediatek,mt2701-dsi
> > + - mediatek,mt7623-dsi
> > + - mediatek,mt8167-dsi
> > + - mediatek,mt8173-dsi
> > + - mediatek,mt8183-dsi
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + interrupts:
> > + maxItems: 1
> > +
> > + power-domains:
> > + maxItems: 1
> > +
> > + clocks:
> > + items:
> > + - description: Engine Clock
> > + - description: Digital Clock
> > + - description: HS Clock
> > +
> > + clock-names:
> > + items:
> > + - const: engine
> > + - const: digital
> > + - const: hs
> > +
> > + resets:
> > + maxItems: 1
> > +
> > + phys:
> > + maxItems: 1
> > +
> > + phy-names:
> > + items:
> > + - const: dphy
> > +
> > + port:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description:
> > + Output port node. This port should be connected to the input
> > + port of an attached DSI panel or DSI-to-eDP encoder chip.
> > +
> > +
>
> 1 blank line
>
> > + "#address-cells":
> > + const: 2
> > +
> > + "#size-cells":
> > + const: 2
>
> Did you try adding these? Because they are wrong and will contradict
> dsi-controller.yaml.
>
Hello Rob,
Sorry, I response something wrong in previous letter.
We could have sub nodes in mediatek dsi.
But we do not need to define this:
"#address-cells":
const: 2
"#size-cells":
const: 2
I will drop them. Thanks!
BRs,
Rex
> Rob
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