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From: Icenowy Zheng <icenowy@sipeed.com>
To: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Rob Herring <robh+dt@kernel.org>
Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Icenowy Zheng <icenowy@sipeed.com>
Subject: [PATCH 2/4] dt-bindings: display: add binding for simple-dbi panels
Date: Mon,  2 Aug 2021 14:35:36 +0800	[thread overview]
Message-ID: <20210802063538.75583-3-icenowy@sipeed.com> (raw)
In-Reply-To: <20210802063538.75583-1-icenowy@sipeed.com>

As we're going to introduce a driver for MIPI DBI panels that need only
standard MIPI-DCS commands to initialize (usually because the controller
has some configuration pre-programmed), add a DT binding file for it,
which now includes only one DBI Type C Option 3 panel, ZSX154-B1206.

Signed-off-by: Icenowy Zheng <icenowy@sipeed.com>
---
 .../bindings/display/simple-dbi.yaml          | 72 +++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/simple-dbi.yaml

diff --git a/Documentation/devicetree/bindings/display/simple-dbi.yaml b/Documentation/devicetree/bindings/display/simple-dbi.yaml
new file mode 100644
index 000000000000..f49b0fda0935
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/simple-dbi.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/simple-dbi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic MIPI DCS-compatible DBI panels Device Tree Bindings
+
+maintainers:
+  - Icenowy Zheng <icenowy@sipeed.com>
+
+description:
+  This binding is for display panels that utilizes MIPI DBI Type C, follows
+  MIPI DCS and needs no vendor-specific initialization commands.
+
+properties:
+  compatible:
+    oneOf:
+      - description:
+          Zhishengxin ZSX154-B1206 1.54" 240x240 SPI LCD
+        items:
+          - const: zsx,zsx154-b1206
+
+  spi-max-frequency:
+    maximum: 30000000
+
+  dc-gpios:
+    maxItems: 1
+    description: Display data/command selection (D/CX)
+
+  backlight: true
+  reg: true
+  reset-gpios: true
+  rotation: true
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: panel/panel-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: zsx,zsx154-b1206
+
+    then:
+      required:
+        - dc-gpios
+        - reset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            display@0 {
+                    compatible = "zsx,zsx154-b1206";
+                    reg = <0>;
+                    spi-max-frequency = <30000000>;
+                    dc-gpios = <&pio 7 4 GPIO_ACTIVE_HIGH>;
+                    reset-gpios = <&r_pio 2 21 GPIO_ACTIVE_HIGH>;
+            };
+    };
+
+...
-- 
2.30.2


  parent reply	other threads:[~2021-08-02  6:36 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-02  6:35 [PATCH 0/4] Add simple-dbi tinydrm driver Icenowy Zheng
2021-08-02  6:35 ` [PATCH 1/4] dt-bindings: vendor-prefixes: add Zhishengxin Icenowy Zheng
2021-08-06 21:44   ` Rob Herring
2021-08-02  6:35 ` Icenowy Zheng [this message]
2021-08-06 21:46   ` [PATCH 2/4] dt-bindings: display: add binding for simple-dbi panels Rob Herring
2021-08-02  6:35 ` [PATCH 3/4] drm/tiny: add simple-dbi driver Icenowy Zheng
2021-08-02  9:02   ` kernel test robot
2021-08-02 15:08   ` Thomas Zimmermann
     [not found]     ` <f69afa7ac2984c5145f38c037a06668b9e08fe44.camel@sipeed.com>
2021-08-03  8:21       ` Thomas Zimmermann
2021-08-02  6:35 ` [PATCH 4/4] MAINTAINERS: " Icenowy Zheng

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