[PATCH 04/10] dt-bindings: display: samsung, exynos5433-decon: convert to dtschema

Krzysztof Kozlowski krzysztof.kozlowski at canonical.com
Tue Feb 8 09:18:17 PST 2022


Convert the Exynos5433 DECON display controller bindings to DT schema
format.

The conversion includes also updates to the bindings, matching the
current DTS and Linux driver:
1. Require "fifo" interrupt.
2. Add "dsd" as a last clock.
3. Document "power-domains" and "iommus" properties.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at canonical.com>
---
 .../display/exynos/exynos5433-decon.txt       |  60 -------
 .../samsung/samsung,exynos5433-decon.yaml     | 148 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 3 files changed, 149 insertions(+), 60 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt
 create mode 100644 Documentation/devicetree/bindings/display/samsung/samsung,exynos5433-decon.yaml

diff --git a/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt b/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt
deleted file mode 100644
index 775193e1c641..000000000000
--- a/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt
+++ /dev/null
@@ -1,60 +0,0 @@
-Device-Tree bindings for Samsung Exynos SoC display controller (DECON)
-
-DECON (Display and Enhancement Controller) is the Display Controller for the
-Exynos series of SoCs which transfers the image data from a video memory
-buffer to an external LCD interface.
-
-Required properties:
-- compatible: value should be one of:
-	"samsung,exynos5433-decon", "samsung,exynos5433-decon-tv";
-- reg: physical base address and length of the DECON registers set.
-- interrupt-names: should contain the interrupt names depending on mode of work:
-		video mode: "vsync",
-		command mode: "lcd_sys",
-		command mode with software trigger: "lcd_sys", "te".
-- interrupts or interrupts-extended: list of interrupt specifiers corresponding
-		to names privided in interrupt-names, as described in
-		interrupt-controller/interrupts.txt
-- clocks: must include clock specifiers corresponding to entries in the
-	  clock-names property.
-- clock-names: list of clock names sorted in the same order as the clocks
-	       property. Must contain "pclk", "aclk_decon", "aclk_smmu_decon0x",
-	       "aclk_xiu_decon0x", "pclk_smmu_decon0x", "aclk_smmu_decon1x",
-	       "aclk_xiu_decon1x", "pclk_smmu_decon1x", clk_decon_vclk",
-	       "sclk_decon_eclk"
-- ports: contains a port which is connected to mic node. address-cells and
-	 size-cells must 1 and 0, respectively.
-- port: contains an endpoint node which is connected to the endpoint in the mic
-	node. The reg value muset be 0.
-
-Example:
-SoC specific DT entry:
-decon: decon at 13800000 {
-	compatible = "samsung,exynos5433-decon";
-	reg = <0x13800000 0x2104>;
-	clocks = <&cmu_disp CLK_ACLK_DECON>, <&cmu_disp CLK_ACLK_SMMU_DECON0X>,
-		<&cmu_disp CLK_ACLK_XIU_DECON0X>,
-		<&cmu_disp CLK_PCLK_SMMU_DECON0X>,
-		<&cmu_disp CLK_ACLK_SMMU_DECON1X>,
-		<&cmu_disp CLK_ACLK_XIU_DECON1X>,
-		<&cmu_disp CLK_PCLK_SMMU_DECON1X>,
-		<&cmu_disp CLK_SCLK_DECON_VCLK>,
-		<&cmu_disp CLK_SCLK_DECON_ECLK>;
-	clock-names = "aclk_decon", "aclk_smmu_decon0x", "aclk_xiu_decon0x",
-		"pclk_smmu_decon0x", "aclk_smmu_decon1x", "aclk_xiu_decon1x",
-		"pclk_smmu_decon1x", "sclk_decon_vclk", "sclk_decon_eclk";
-	interrupt-names = "vsync", "lcd_sys";
-	interrupts = <0 202 0>, <0 203 0>;
-
-	ports {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		port at 0 {
-			reg = <0>;
-			decon_to_mic: endpoint {
-				remote-endpoint = <&mic_to_decon>;
-			};
-		};
-	};
-};
diff --git a/Documentation/devicetree/bindings/display/samsung/samsung,exynos5433-decon.yaml b/Documentation/devicetree/bindings/display/samsung/samsung,exynos5433-decon.yaml
new file mode 100644
index 000000000000..6f796835ea03
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/samsung/samsung,exynos5433-decon.yaml
@@ -0,0 +1,148 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/samsung/samsung,exynos5433-decon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos5433 SoC Display and Enhancement Controller (DECON)
+
+maintainers:
+  - Inki Dae <inki.dae at samsung.com>
+  - Joonyoung Shim <jy0922.shim at samsung.com>
+  - Seung-Woo Kim <sw0312.kim at samsung.com>
+  - Kyungmin Park <kyungmin.park at samsung.com>
+  - Krzysztof Kozlowski <krzysztof.kozlowski at canonical.com>
+
+description: |
+  DECON (Display and Enhancement Controller) is the Display Controller for the
+  Exynos5433 series of SoCs which transfers the image data from a video memory
+  buffer to an external LCD interface.
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos5433-decon
+      - samsung,exynos5433-decon-tv
+
+  clocks:
+    minItems: 11
+    maxItems: 11
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: aclk_decon
+      - const: aclk_smmu_decon0x
+      - const: aclk_xiu_decon0x
+      - const: pclk_smmu_decon0x
+      - const: aclk_smmu_decon1x
+      - const: aclk_xiu_decon1x
+      - const: pclk_smmu_decon1x
+      - const: sclk_decon_vclk
+      - const: sclk_decon_eclk
+      - const: dsd
+
+  interrupts:
+    minItems: 3
+    maxItems: 4
+    description: |
+      Interrupts depend on mode of work:
+       - video mode: vsync
+       - command mode: lcd_sys
+       - command mode with software trigger: lcd_sys, te
+
+  interrupt-names:
+    minItems: 3
+    items:
+      - const: fifo
+      - const: vsync
+      - const: lcd_sys
+      - const: te
+
+  iommus:
+    minItems: 2
+    maxItems: 2
+
+  iommu-names:
+    items:
+      - const: m0
+      - const: m1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    description:
+      Contains a port which is connected to mic node.
+
+  power-domains:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  samsung,disp-sysreg:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to DISP system controller interface.
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - ports
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5433.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    display-controller at 13800000 {
+        compatible = "samsung,exynos5433-decon";
+        reg = <0x13800000 0x2104>;
+        clocks = <&cmu_disp CLK_PCLK_DECON>,
+                 <&cmu_disp CLK_ACLK_DECON>,
+                 <&cmu_disp CLK_ACLK_SMMU_DECON0X>,
+                 <&cmu_disp CLK_ACLK_XIU_DECON0X>,
+                 <&cmu_disp CLK_PCLK_SMMU_DECON0X>,
+                 <&cmu_disp CLK_ACLK_SMMU_DECON1X>,
+                 <&cmu_disp CLK_ACLK_XIU_DECON1X>,
+                 <&cmu_disp CLK_PCLK_SMMU_DECON1X>,
+                 <&cmu_disp CLK_SCLK_DECON_VCLK>,
+                 <&cmu_disp CLK_SCLK_DECON_ECLK>,
+                 <&cmu_disp CLK_SCLK_DSD>;
+        clock-names = "pclk",
+                      "aclk_decon",
+                      "aclk_smmu_decon0x",
+                      "aclk_xiu_decon0x",
+                      "pclk_smmu_decon0x",
+                      "aclk_smmu_decon1x",
+                      "aclk_xiu_decon1x",
+                      "pclk_smmu_decon1x",
+                      "sclk_decon_vclk",
+                      "sclk_decon_eclk",
+                      "dsd";
+        power-domains = <&pd_disp>;
+        interrupt-names = "fifo", "vsync", "lcd_sys";
+        interrupts = <GIC_SPI 201 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 202 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 203 IRQ_TYPE_LEVEL_HIGH>;
+        samsung,disp-sysreg = <&syscon_disp>;
+        iommus = <&sysmmu_decon0x>, <&sysmmu_decon1x>;
+        iommu-names = "m0", "m1";
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port at 0 {
+                reg = <0>;
+                decon_to_mic: endpoint {
+                    remote-endpoint = <&mic_to_decon>;
+                };
+            };
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index ddcee331dc09..a0ad276b3159 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6417,6 +6417,7 @@ L:	dri-devel at lists.freedesktop.org
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
 F:	Documentation/devicetree/bindings/display/exynos/
+F:	Documentation/devicetree/bindings/display/samsung/
 F:	drivers/gpu/drm/exynos/
 F:	include/uapi/drm/exynos_drm.h
 
-- 
2.32.0




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