linux-kernel - [PATCH 1/2] dt-bindings: display: Add st7735s driver

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Date:   Wed, 6 Sep 2023 18:22:16 +0200
From:   Stefan x Nilsson <stefan.x.nilsson@...s.com>
To:     David Lechner <david@...hnology.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
CC:     <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Stefan x Nilsson <stefan.x.nilsson@...s.com>,
        <kernel@...s.com>
Subject: [PATCH 1/2] dt-bindings: display: Add st7735s driver

Add bindings for a driver for Sitronix st7735s display controller, as
well as for a Winstar wf0096atyaa3dnn0 0.96" 80x160 TFT panel.

Signed-off-by: Stefan x Nilsson <stefan.x.nilsson@...s.com>
---
 .../bindings/display/sitronix,st7735s.yaml         | 81 ++++++++++++++++++++++
 MAINTAINERS                                        |  6 ++
 2 files changed, 87 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/sitronix,st7735s.yaml b/Documentation/devicetree/bindings/display/sitronix,st7735s.yaml
new file mode 100644
index 000000000000..36234ec22fe2
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/sitronix,st7735s.yaml
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sitronix,st7735s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sitronix ST7735S Display Panels
+
+maintainers:
+  - Stefan x Nilsson <stefan.x.nilsson@...s.com>
+
+description:
+  This binding is for display panels using a Sitronix ST7735S
+  controller in SPI mode.
+
+allOf:
+  - $ref: panel/panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - description:
+          Winstar WF0096ATYAA3DNN0 0.96" 80x160 Color TFT
+        items:
+          - enum:
+              - winstar,wf0096atyaa3dnn0
+          - const: sitronix,st7735s
+
+  dc-gpios:
+    maxItems: 1
+    description: Display data/command selection (D/CX)
+
+  backlight: true
+  reg: true
+  spi-max-frequency: true
+  reset-gpios: true
+  rotation: true
+
+required:
+  - compatible
+  - reg
+  - dc-gpios
+
+additionalProperties: true
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    backlight: backlight {
+            compatible = "gpio-backlight";
+            gpios = <&gpio 44 GPIO_ACTIVE_HIGH>;
+    };
+
+    regdisplay: regulatordisplay {
+            compatible = "regulator-fixed";
+            regulator-name = "display";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+            regulator-enable-ramp-delay = <100000>;
+            enable-active-high;
+    };
+
+    spi {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            display@0 {
+                    compatible = "winstar,wf0096atyaa3dnn0","sitronix,st7735s";
+                    reg = <0>;
+                    spi-max-frequency = <12000000>;
+                    dc-gpios = <&gpio 43 GPIO_ACTIVE_HIGH>;
+                    reset-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
+                    backlight = <&backlight>;
+                    power-supply = <&regdsiplay>;
+                    rotation = <270>;
+            };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 6308efa121e1..c00b2b9086f2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6728,6 +6728,12 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/sitronix,st7735r.yaml
 F:	drivers/gpu/drm/tiny/st7735r.c
 
+DRM DRIVER FOR SITRONIX ST7735S PANELS
+M:	Stefan x Nilsson <stefan.x.nilsson@...s.com>
+S:	Maintained
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+F:	Documentation/devicetree/bindings/display/sitronix,st7735s.yaml
+
 DRM DRIVER FOR SOLOMON SSD130X OLED DISPLAYS
 M:	Javier Martinez Canillas <javierm@...hat.com>
 S:	Maintained

-- 
2.30.2