From: Fengping Yu <fengping.yu@mediatek.com>
To: Yingjoe Chen <yingjoe.chen@mediatek.com>,
Rob Herring <robh+dt@kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Marco Felsch <m.felsch@pengutronix.de>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mediatek@lists.infradead.org, linux-input@vger.kernel.org,
"fengping.yu" <fengping.yu@mediatek.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v17 1/3] dt-bindings: Add bindings for Mediatek matrix keypad
Date: Mon, 10 Aug 2020 14:40:57 +0800 [thread overview]
Message-ID: <20200810064058.6467-2-fengping.yu@mediatek.com> (raw)
In-Reply-To: <20200810064058.6467-1-fengping.yu@mediatek.com>
From: "fengping.yu" <fengping.yu@mediatek.com>
This patch add devicetree bindings for Mediatek matrix keypad driver.
Signed-off-by: fengping.yu <fengping.yu@mediatek.com>
---
.../devicetree/bindings/input/mtk-kpd.yaml | 87 +++++++++++++++++++
1 file changed, 87 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/mtk-kpd.yaml
diff --git a/Documentation/devicetree/bindings/input/mtk-kpd.yaml b/Documentation/devicetree/bindings/input/mtk-kpd.yaml
new file mode 100644
index 000000000000..d74dd8a6fbde
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/mtk-kpd.yaml
@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+version: 1
+
+$id: http://devicetree.org/schemas/input/mtk-keypad.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek's Keypad Controller device tree bindings
+
+maintainer:
+ - Fengping Yu <fengping.yu@mediatek.com>
+
+description: |
+ Mediatek's Keypad controller is used to interface a SoC with a matrix-type
+ keypad device. The keypad controller supports multiple row and column lines.
+ A key can be placed at each intersection of a unique row and a unique column.
+ The keypad controller can sense a key-press and key-release and report the
+ event using a interrupt to the cpu.
+
+properties:
+ compatible:
+ oneOf:
+ - const: "mediatek,mt6779-keypad"
+ - const: "mediatek,mt6873-keypad"
+
+ clock-names:
+ description: Names of the clocks listed in clocks property in the same order
+ maxItems: 1
+ items:
+ - const: kpd
+
+ clocks:
+ description: Must contain one entry, for the module clock
+ refs: devicetree/bindings/clocks/clock-bindings.txt for details.
+
+ interrupts:
+ description: A single interrupt specifier
+ maxItems: 1
+
+ linux,keymap:
+ description: The keymap for keys as described in the binding document
+ refs: devicetree/bindings/input/matrix-keymap.txt
+ minItems: 1
+
+ reg:
+ description: The base address of the Keypad register bank
+ maxItems: 1
+
+ wakeup-source:
+ description: use any event on keypad as wakeup event
+ type: boolean
+
+ keypad,num-columns:
+ description: Number of column lines connected to the keypad controller,
+ it is not equal to PCB columns number, instead you should add required value
+ for each IC. If not specified, the default value is 1.
+
+ keypad,num-rows:
+ description: Number of row lines connected to the keypad controller, it is
+ not equal to PCB rows number, instead you should add required value for each IC.
+ If not specified, the default value is 1.
+
+ mediatek,debounce-us:
+ description: Debounce interval in microseconds, if not specified, the default
+ value is 16000
+ maximum: 256000
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - linux,keymap
+ - clocks
+ - clock-names
+
+examples:
+ - |
+
+ kp@10010000 {
+ compatible = "mediatek,mt6779-keypad";
+ reg = <0 0x10010000 0 0x1000>;
+ linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_VOLUMEDOWN) >;
+ interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>;
+ clocks = <&clk26m>;
+ clock-names = "kpd";
+ };
--
2.18.0
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next prev parent reply other threads:[~2020-08-10 6:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 6:40 [PATCH v17] Add matrix keypad driver support for Mediatek SoCs Fengping Yu
2020-08-10 6:40 ` Fengping Yu [this message]
2020-08-11 1:47 ` [PATCH v17 1/3] dt-bindings: Add bindings for Mediatek matrix keypad Yingjoe Chen
2020-08-12 22:13 ` Dmitry Torokhov
2020-08-13 5:02 ` Yingjoe Chen
2020-08-12 22:37 ` Dmitry Torokhov
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