[PATCH v2 0/5] mediatek: hdmi: add MT8167 configuration

[PATCH v2 0/5] mediatek: hdmi: add MT8167 configuration

[Neil Armstrong]

The MT8167 SoC have a hard limit on the maximal supported HDMI TMDS clock,
and is not validated and supported for HDMI modes out of HDMI CEA modes.

To achieve this:
- switch the mediatek HDMI bindings to YAML
- add the MT8167 compatible
- add a boolean to discard the non-CEA modes
- add a value to specify mac TMDS supported clock
- add a conf entry for the MT8167 compatible

Neil Armstrong (5):
  dt-bindings: display: mediatek,hdmi: Convert to use graph schema
  dt-bindings: mediatek: add mt8167 to hdmi, hdmi-ddc and cec bindings
  gpu/drm: mediatek: hdmi: add check for CEA modes only
  gpu/drm: mediatek: hdmi: add optional limit on maximal HDMI mode clock
  gpu/drm: mediatek: hdmi: add MT8167 configuration

 .../display/mediatek/mediatek,cec.yaml        |  52 +++++++
 .../display/mediatek/mediatek,hdmi-ddc.yaml   |  58 ++++++++
 .../display/mediatek/mediatek,hdmi.txt        | 136 ------------------
 .../display/mediatek/mediatek,hdmi.yaml       | 132 +++++++++++++++++
 drivers/gpu/drm/mediatek/mtk_hdmi.c           |  17 +++
 5 files changed, 259 insertions(+), 136 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
 delete mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml

-- 
2.25.1

[PATCH v2 1/5] dt-bindings: display: mediatek,hdmi: Convert to use graph schema

[Neil Armstrong]

Update the mediatek,dpi binding to use the graph schema.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 .../display/mediatek/mediatek,cec.yaml        |  51 +++++++
 .../display/mediatek/mediatek,hdmi-ddc.yaml   |  57 ++++++++
 .../display/mediatek/mediatek,hdmi.txt        | 136 ------------------
 .../display/mediatek/mediatek,hdmi.yaml       | 131 +++++++++++++++++
 4 files changed, 239 insertions(+), 136 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
 delete mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
new file mode 100644
index 000000000000..408e7dfce409
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,cec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek HDMI CEC Controller Device Tree Bindings
+
+maintainers:
+  - CK Hu <ck.hu@mediatek.com>
+  - Jitao shi <jitao.shi@mediatek.com>
+
+description: |
+  The HDMI CEC controller handles hotplug detection and CEC communication.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt7623-hdmi
+      - mediatek,mt8173-hdmi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8173-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    cec: cec@10013000 {
+        compatible = "mediatek,mt8173-cec";
+        reg = <0x10013000 0xbc>;
+        interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_LOW>;
+        clocks = <&infracfg CLK_INFRA_CEC>;
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
new file mode 100644
index 000000000000..c15b3470d652
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,hdmi-ddc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek HDMI DDC Device Tree Bindings
+
+maintainers:
+  - CK Hu <ck.hu@mediatek.com>
+  - Jitao shi <jitao.shi@mediatek.com>
+
+description: |
+  The HDMI DDC i2c controller is used to interface with the HDMI DDC pins.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt7623-hdmi
+      - mediatek,mt8173-hdmi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: ddc-i2c
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8173-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    hdmi_ddc0: i2c@11012000 {
+        compatible = "mediatek,mt8173-hdmi-ddc";
+        reg = <0x11012000 0x1c>;
+        interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_LOW>;
+        clocks = <&pericfg CLK_PERI_I2C5>;
+        clock-names = "ddc-i2c";
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
deleted file mode 100644
index b284ca51b913..000000000000
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
+++ /dev/null
@@ -1,136 +0,0 @@
-Mediatek HDMI Encoder
-=====================
-
-The Mediatek HDMI encoder can generate HDMI 1.4a or MHL 2.0 signals from
-its parallel input.
-
-Required properties:
-- compatible: Should be "mediatek,<chip>-hdmi".
-- the supported chips are mt2701, mt7623 and mt8173
-- 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 "pixel", "pll", "bclk", and "spdif".
-- phys: phandle link to the HDMI PHY node.
-  See Documentation/devicetree/bindings/phy/phy-bindings.txt for details.
-- phy-names: must contain "hdmi"
-- mediatek,syscon-hdmi: phandle link and register offset to the system
-  configuration registers. For mt8173 this must be offset 0x900 into the
-  MMSYS_CONFIG region: <&mmsys 0x900>.
-- ports: A node containing input and output port nodes with endpoint
-  definitions as documented in Documentation/devicetree/bindings/graph.txt.
-- port@0: The input port in the ports node should be connected to a DPI output
-  port.
-- port@1: The output port in the ports node should be connected to the input
-  port of a connector node that contains a ddc-i2c-bus property, or to the
-  input port of an attached bridge chip, such as a SlimPort transmitter.
-
-HDMI CEC
-========
-
-The HDMI CEC controller handles hotplug detection and CEC communication.
-
-Required properties:
-- compatible: Should be "mediatek,<chip>-cec"
-- the supported chips are mt7623 and mt8173
-- reg: Physical base address and length of the controller's registers
-- interrupts: The interrupt signal from the function block.
-- clocks: device clock
-
-HDMI DDC
-========
-
-The HDMI DDC i2c controller is used to interface with the HDMI DDC pins.
-The Mediatek's I2C controller is used to interface with I2C devices.
-
-Required properties:
-- compatible: Should be "mediatek,<chip>-hdmi-ddc"
-- the supported chips are mt7623 and mt8173
-- reg: Physical base address and length of the controller's registers
-- clocks: device clock
-- clock-names: Should be "ddc-i2c".
-
-HDMI PHY
-========
-See phy/mediatek,hdmi-phy.yaml
-
-Example:
-
-cec: cec@10013000 {
-	compatible = "mediatek,mt8173-cec";
-	reg = <0 0x10013000 0 0xbc>;
-	interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_LOW>;
-	clocks = <&infracfg CLK_INFRA_CEC>;
-};
-
-hdmi_phy: hdmi-phy@10209100 {
-	compatible = "mediatek,mt8173-hdmi-phy";
-	reg = <0 0x10209100 0 0x24>;
-	clocks = <&apmixedsys CLK_APMIXED_HDMI_REF>;
-	clock-names = "pll_ref";
-	clock-output-names = "hdmitx_dig_cts";
-	mediatek,ibias = <0xa>;
-	mediatek,ibias_up = <0x1c>;
-	#clock-cells = <0>;
-	#phy-cells = <0>;
-};
-
-hdmi_ddc0: i2c@11012000 {
-	compatible = "mediatek,mt8173-hdmi-ddc";
-	reg = <0 0x11012000 0 0x1c>;
-	interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_LOW>;
-	clocks = <&pericfg CLK_PERI_I2C5>;
-	clock-names = "ddc-i2c";
-};
-
-hdmi0: hdmi@14025000 {
-	compatible = "mediatek,mt8173-hdmi";
-	reg = <0 0x14025000 0 0x400>;
-	interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_LOW>;
-	clocks = <&mmsys CLK_MM_HDMI_PIXEL>,
-		 <&mmsys CLK_MM_HDMI_PLLCK>,
-		 <&mmsys CLK_MM_HDMI_AUDIO>,
-		 <&mmsys CLK_MM_HDMI_SPDIF>;
-	clock-names = "pixel", "pll", "bclk", "spdif";
-	pinctrl-names = "default";
-	pinctrl-0 = <&hdmi_pin>;
-	phys = <&hdmi_phy>;
-	phy-names = "hdmi";
-	mediatek,syscon-hdmi = <&mmsys 0x900>;
-	assigned-clocks = <&topckgen CLK_TOP_HDMI_SEL>;
-	assigned-clock-parents = <&hdmi_phy>;
-
-	ports {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		port@0 {
-			reg = <0>;
-
-			hdmi0_in: endpoint {
-				remote-endpoint = <&dpi0_out>;
-			};
-		};
-
-		port@1 {
-			reg = <1>;
-
-			hdmi0_out: endpoint {
-				remote-endpoint = <&hdmi_con_in>;
-			};
-		};
-	};
-};
-
-connector {
-	compatible = "hdmi-connector";
-	type = "a";
-	ddc-i2c-bus = <&hdmiddc0>;
-
-	port {
-		hdmi_con_in: endpoint {
-			remote-endpoint = <&hdmi0_out>;
-		};
-	};
-};
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
new file mode 100644
index 000000000000..9c125d7c8934
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
@@ -0,0 +1,131 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek HDMI Encoder Device Tree Bindings
+
+maintainers:
+  - CK Hu <ck.hu@mediatek.com>
+  - Jitao shi <jitao.shi@mediatek.com>
+
+description: |
+  The Mediatek HDMI encoder can generate HDMI 1.4a or MHL 2.0 signals from
+  its parallel input.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt2701-hdmi
+      - mediatek,mt7623-hdmi
+      - mediatek,mt8173-hdmi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Pixel Clock
+      - description: HDMI PLL
+      - description: Bit Clock
+      - description: S/PDIF Clock
+
+  clock-names:
+    items:
+      - const: pixel
+      - const: pll
+      - const: bclk
+      - const: spdif
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    items:
+      - const: hdmi
+
+  mediatek,syscon-hdmi:
+    $ref: '/schemas/types.yaml#/definitions/phandle'
+    minItems: 2
+    description: |
+      phandle link and register offset to the system configuration registers.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: |
+          Input port node. This port should be connected to a DPI output port.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: |
+          Output port node. This port should be connected to the input port of a connector
+          node that contains a ddc-i2c-bus property, or to the  input port of an attached
+          bridge chip, such as a SlimPort transmitter.
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - phys
+  - phy-names
+  - mediatek,syscon-hdmi
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8173-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    hdmi0: hdmi@14025000 {
+        reg = <0x14025000 0x400>;
+        interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_LOW>;
+        clocks = <&mmsys CLK_MM_HDMI_PIXEL>,
+             <&mmsys CLK_MM_HDMI_PLLCK>,
+             <&mmsys CLK_MM_HDMI_AUDIO>,
+             <&mmsys CLK_MM_HDMI_SPDIF>;
+        clock-names = "pixel", "pll", "bclk", "spdif";
+        pinctrl-names = "default";
+        pinctrl-0 = <&hdmi_pin>;
+        phys = <&hdmi_phy>;
+        phy-names = "hdmi";
+        mediatek,syscon-hdmi = <&mmsys 0x900>;
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+
+            hdmi0_in: endpoint {
+              remote-endpoint = <&dpi0_out>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+
+            hdmi0_out: endpoint {
+              remote-endpoint = <&hdmi_con_in>;
+            };
+          };
+        };
+    };
+
+...
-- 
2.25.1

Re: [PATCH v2 1/5] dt-bindings: display: mediatek, hdmi: Convert to use graph schema

[Rob Herring]

On Mon, 12 Apr 2021 11:39:24 +0200, Neil Armstrong wrote:
> Update the mediatek,dpi binding to use the graph schema.
> 
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
>  .../display/mediatek/mediatek,cec.yaml        |  51 +++++++
>  .../display/mediatek/mediatek,hdmi-ddc.yaml   |  57 ++++++++
>  .../display/mediatek/mediatek,hdmi.txt        | 136 ------------------
>  .../display/mediatek/mediatek,hdmi.yaml       | 131 +++++++++++++++++
>  4 files changed, 239 insertions(+), 136 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
>  delete mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.example.dt.yaml:0:0: /example-0/i2c@11012000: failed to match any schema with compatible: ['mediatek,mt8173-hdmi-ddc']
Documentation/devicetree/bindings/display/mediatek/mediatek,cec.example.dt.yaml:0:0: /example-0/cec@10013000: failed to match any schema with compatible: ['mediatek,mt8173-cec']

See https://patchwork.ozlabs.org/patch/1465094

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

Re: [PATCH v2 1/5] dt-bindings: display: mediatek,hdmi: Convert to use graph schema

[Neil Armstrong]

On 12/04/2021 11:39, Neil Armstrong wrote:
> Update the mediatek,dpi binding to use the graph schema.
> 
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
>  .../display/mediatek/mediatek,cec.yaml        |  51 +++++++
>  .../display/mediatek/mediatek,hdmi-ddc.yaml   |  57 ++++++++
>  .../display/mediatek/mediatek,hdmi.txt        | 136 ------------------
>  .../display/mediatek/mediatek,hdmi.yaml       | 131 +++++++++++++++++
>  4 files changed, 239 insertions(+), 136 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
>  delete mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
> new file mode 100644
> index 000000000000..408e7dfce409
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,cec.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek HDMI CEC Controller Device Tree Bindings
> +
> +maintainers:
> +  - CK Hu <ck.hu@mediatek.com>
> +  - Jitao shi <jitao.shi@mediatek.com>
> +
> +description: |
> +  The HDMI CEC controller handles hotplug detection and CEC communication.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt7623-hdmi

=> mediatek,mt7623-cec

> +      - mediatek,mt8173-hdmi

=> mediatek,mt8173-cec

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1

[..]

> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
> new file mode 100644
> index 000000000000..c15b3470d652
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,hdmi-ddc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek HDMI DDC Device Tree Bindings
> +
> +maintainers:
> +  - CK Hu <ck.hu@mediatek.com>
> +  - Jitao shi <jitao.shi@mediatek.com>
> +
> +description: |
> +  The HDMI DDC i2c controller is used to interface with the HDMI DDC pins.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt7623-hdmi

=> mediatek,mt7623-hdmi-ddc

> +      - mediatek,mt8173-hdmi

=> mediatek,mt8173-hdmi-ddc

> +
> +  reg:
> +    maxItems: 1


[..]
will repost with these fixes in  a few days,

Neil

[PATCH v2 2/5] dt-bindings: mediatek: add mt8167 to hdmi, hdmi-ddc and cec bindings

[Neil Armstrong]

Add mt8167 SoC compatible to Mediatek hdmi, hdmi-ddc and cec schema bindings.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 .../devicetree/bindings/display/mediatek/mediatek,cec.yaml       | 1 +
 .../devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml  | 1 +
 .../devicetree/bindings/display/mediatek/mediatek,hdmi.yaml      | 1 +
 3 files changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
index 408e7dfce409..23e21656ca55 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,cec.yaml
@@ -17,6 +17,7 @@ properties:
   compatible:
     enum:
       - mediatek,mt7623-hdmi
+      - mediatek,mt8167-hdmi
       - mediatek,mt8173-hdmi
 
   reg:
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
index c15b3470d652..9d7148b1a7c3 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi-ddc.yaml
@@ -17,6 +17,7 @@ properties:
   compatible:
     enum:
       - mediatek,mt7623-hdmi
+      - mediatek,mt8167-hdmi
       - mediatek,mt8173-hdmi
 
   reg:
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
index 9c125d7c8934..01ab0e8e02bc 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
@@ -19,6 +19,7 @@ properties:
     enum:
       - mediatek,mt2701-hdmi
       - mediatek,mt7623-hdmi
+      - mediatek,mt8167-hdmi
       - mediatek,mt8173-hdmi
 
   reg:
-- 
2.25.1

[PATCH v2 3/5] gpu/drm: mediatek: hdmi: add check for CEA modes only

[Neil Armstrong]

Some SoCs like the MT8167 are not validated and supported for HDMI modes
out of HDMI CEA modes, so add a configuration boolean to filter out
non-CEA modes.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/gpu/drm/mediatek/mtk_hdmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index dea46d66e712..0539262e69d3 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -148,6 +148,7 @@ struct hdmi_audio_param {
 
 struct mtk_hdmi_conf {
 	bool tz_disabled;
+	bool cea_modes_only;
 };
 
 struct mtk_hdmi {
@@ -1222,6 +1223,9 @@ static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 			return MODE_BAD;
 	}
 
+	if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode))
+		return MODE_BAD;
+
 	if (mode->clock < 27000)
 		return MODE_CLOCK_LOW;
 	if (mode->clock > 297000)
-- 
2.25.1

[PATCH v2 4/5] gpu/drm: mediatek: hdmi: add optional limit on maximal HDMI mode clock

[Neil Armstrong]

Some SoCs like the MT8167 have a hard limit on the maximal supported HDMI TMDS
clock, so add a configuration value to filter out those modes.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/gpu/drm/mediatek/mtk_hdmi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 0539262e69d3..bc50d97f2553 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -149,6 +149,7 @@ struct hdmi_audio_param {
 struct mtk_hdmi_conf {
 	bool tz_disabled;
 	bool cea_modes_only;
+	unsigned long max_mode_clock;
 };
 
 struct mtk_hdmi {
@@ -1226,6 +1227,10 @@ static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 	if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode))
 		return MODE_BAD;
 
+	if (hdmi->conf->max_mode_clock &&
+	    mode->clock > hdmi->conf->max_mode_clock)
+		return MODE_CLOCK_HIGH;
+
 	if (mode->clock < 27000)
 		return MODE_CLOCK_LOW;
 	if (mode->clock > 297000)
-- 
2.25.1

[PATCH v2 5/5] gpu/drm: mediatek: hdmi: add MT8167 configuration

[Neil Armstrong]

The MT8167 SoC have a hard limit on the maximal supported HDMI TMDS clock,
and is not validated and supported for HDMI modes out of HDMI CEA modes,
so add a configuration entry linked to the MT8167 compatible.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/gpu/drm/mediatek/mtk_hdmi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index bc50d97f2553..c1651a83700d 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1787,10 +1787,18 @@ static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
 	.tz_disabled = true,
 };
 
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
+	.max_mode_clock = 148500,
+	.cea_modes_only = true,
+};
+
 static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
 	{ .compatible = "mediatek,mt2701-hdmi",
 	  .data = &mtk_hdmi_conf_mt2701,
 	},
+	{ .compatible = "mediatek,mt8167-hdmi",
+	  .data = &mtk_hdmi_conf_mt8167,
+	},
 	{ .compatible = "mediatek,mt8173-hdmi",
 	},
 	{}
-- 
2.25.1