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authorSascha Hauer <s.hauer@pengutronix.de>2021-10-04 16:10:53 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2021-10-05 13:50:03 +0200
commit618948e4e5b399295bbe56bfb30891790cae9232 (patch)
tree15b1424ce28f92fe546189d82b1f4d6258db5333 /dts/Bindings/auxdisplay
parenta53e3c4e166e82e6abd8528c2dd1f91639407737 (diff)
downloadbarebox-618948e4e5b399295bbe56bfb30891790cae9232.tar.gz
barebox-618948e4e5b399295bbe56bfb30891790cae9232.tar.xz
dts: update to v5.15-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/auxdisplay')
-rw-r--r--dts/Bindings/auxdisplay/arm,versatile-lcd.yaml44
-rw-r--r--dts/Bindings/auxdisplay/arm-charlcd.txt18
-rw-r--r--dts/Bindings/auxdisplay/hit,hd44780.yaml31
-rw-r--r--dts/Bindings/auxdisplay/img,ascii-lcd.yaml55
-rw-r--r--dts/Bindings/auxdisplay/img-ascii-lcd.txt17
5 files changed, 129 insertions, 36 deletions
diff --git a/dts/Bindings/auxdisplay/arm,versatile-lcd.yaml b/dts/Bindings/auxdisplay/arm,versatile-lcd.yaml
new file mode 100644
index 0000000000..5d02bd032a
--- /dev/null
+++ b/dts/Bindings/auxdisplay/arm,versatile-lcd.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/auxdisplay/arm,versatile-lcd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Versatile Character LCD
+
+maintainers:
+ - Linus Walleij <linus.walleij@linaro.org>
+ - Rob Herring <robh@kernel.org>
+
+description:
+ This binding defines the character LCD interface found on ARM Versatile AB
+ and PB reference platforms.
+
+properties:
+ compatible:
+ const: arm,versatile-lcd
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ lcd@10008000 {
+ compatible = "arm,versatile-lcd";
+ reg = <0x10008000 0x1000>;
+ };
diff --git a/dts/Bindings/auxdisplay/arm-charlcd.txt b/dts/Bindings/auxdisplay/arm-charlcd.txt
deleted file mode 100644
index e28e2aac47..0000000000
--- a/dts/Bindings/auxdisplay/arm-charlcd.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-ARM Versatile Character LCD
------------------------------------------------------
-This binding defines the character LCD interface found on ARM Versatile AB
-and PB reference platforms.
-
-Required properties:
-- compatible : "arm,versatile-clcd"
-- reg : Location and size of character LCD registers
-
-Optional properties:
-- interrupts - single interrupt for character LCD. The character LCD can
- operate in polled mode without an interrupt.
-
-Example:
- lcd@10008000 {
- compatible = "arm,versatile-lcd";
- reg = <0x10008000 0x1000>;
- };
diff --git a/dts/Bindings/auxdisplay/hit,hd44780.yaml b/dts/Bindings/auxdisplay/hit,hd44780.yaml
index 9222b06e93..fde07e4b11 100644
--- a/dts/Bindings/auxdisplay/hit,hd44780.yaml
+++ b/dts/Bindings/auxdisplay/hit,hd44780.yaml
@@ -12,7 +12,10 @@ maintainers:
description:
The Hitachi HD44780 Character LCD Controller is commonly used on character
LCDs that can display one or more lines of text. It exposes an M6800 bus
- interface, which can be used in either 4-bit or 8-bit mode.
+ interface, which can be used in either 4-bit or 8-bit mode. By using a
+ GPIO expander it is possible to use the driver with one of the popular I2C
+ expander boards based on the PCF8574 available for these displays. For
+ an example see below.
properties:
compatible:
@@ -94,3 +97,29 @@ examples:
display-height-chars = <2>;
display-width-chars = <16>;
};
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pcf8574: pcf8574@27 {
+ compatible = "nxp,pcf8574";
+ reg = <0x27>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+ hd44780 {
+ compatible = "hit,hd44780";
+ display-height-chars = <2>;
+ display-width-chars = <16>;
+ data-gpios = <&pcf8574 4 0>,
+ <&pcf8574 5 0>,
+ <&pcf8574 6 0>,
+ <&pcf8574 7 0>;
+ enable-gpios = <&pcf8574 2 0>;
+ rs-gpios = <&pcf8574 0 0>;
+ rw-gpios = <&pcf8574 1 0>;
+ backlight-gpios = <&pcf8574 3 0>;
+ };
diff --git a/dts/Bindings/auxdisplay/img,ascii-lcd.yaml b/dts/Bindings/auxdisplay/img,ascii-lcd.yaml
new file mode 100644
index 0000000000..1899b23de7
--- /dev/null
+++ b/dts/Bindings/auxdisplay/img,ascii-lcd.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/auxdisplay/img,ascii-lcd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASCII LCD displays on Imagination Technologies boards
+
+maintainers:
+ - Paul Burton <paulburton@kernel.org>
+
+properties:
+ compatible:
+ enum:
+ - img,boston-lcd
+ - mti,malta-lcd
+ - mti,sead3-lcd
+
+ reg:
+ maxItems: 1
+
+ offset:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Offset in bytes to the LCD registers within the system controller
+
+required:
+ - compatible
+
+oneOf:
+ - required:
+ - reg
+ - required:
+ - offset
+
+if:
+ properties:
+ compatible:
+ contains:
+ const: img,boston-lcd
+then:
+ required:
+ - reg
+else:
+ required:
+ - offset
+
+additionalProperties: false
+
+examples:
+ - |
+ lcd: lcd@17fff000 {
+ compatible = "img,boston-lcd";
+ reg = <0x17fff000 0x8>;
+ };
diff --git a/dts/Bindings/auxdisplay/img-ascii-lcd.txt b/dts/Bindings/auxdisplay/img-ascii-lcd.txt
deleted file mode 100644
index b69bb68992..0000000000
--- a/dts/Bindings/auxdisplay/img-ascii-lcd.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-Binding for ASCII LCD displays on Imagination Technologies boards
-
-Required properties:
-- compatible : should be one of:
- "img,boston-lcd"
- "mti,malta-lcd"
- "mti,sead3-lcd"
-
-Required properties for "img,boston-lcd":
-- reg : memory region locating the device registers
-
-Required properties for "mti,malta-lcd" or "mti,sead3-lcd":
-- regmap: phandle of the system controller containing the LCD registers
-- offset: offset in bytes to the LCD registers within the system controller
-
-The layout of the registers & properties of the display are determined
-from the compatible string, making this binding somewhat trivial.