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Wed, 22 Apr 2020 17:34:33 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Apr 2020 18:24:35 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 23 Apr 2020 09:24:33 +0800 Received: from localhost.localdomain (10.15.20.246) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 23 Apr 2020 09:24:36 +0800 From: Fengping yu To: Dmitry Torokhov , Andy Shevchenko , Marco Felsch , Yingjoe Chen Subject: [PATCH v5 1/3] dt-bindings: add matrix keypad documentation Date: Thu, 23 Apr 2020 09:19:58 +0800 Message-ID: <20200423011958.30521-2-fengping.yu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200423011958.30521-1-fengping.yu@mediatek.com> References: <20200423011958.30521-1-fengping.yu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 00A59FD38758F0710FDFDC682EE936104343DD5F0C0F1242637520CD4DBE4A932000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200422_183445_501076_F892D766 X-CRM114-Status: GOOD ( 11.57 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-input@vger.kernel.org, "fengping.yu" , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org From: "fengping.yu" Signed-off-by: fengping.yu --- .../devicetree/bindings/input/mtk-kpd.txt | 61 +++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/mtk-kpd.txt diff --git a/Documentation/devicetree/bindings/input/mtk-kpd.txt b/Documentation/devicetree/bindings/input/mtk-kpd.txt new file mode 100644 index 000000000000..8b154a5e2f7d --- /dev/null +++ b/Documentation/devicetree/bindings/input/mtk-kpd.txt @@ -0,0 +1,61 @@ +* Mediatek's Keypad Controller device tree binding + +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. + +Required properties: +- compatible should contain: + * "mediatek,kp" for common keypad + * "mediatek,mt6779-keypad" for specific keypad chip + +- reg: The base address of the Keypad register bank. + +- interrupts: A single interrupt specifier. + +- mediatek,debounce-us: Debounce interval in microseconds, maximum value + is 256000 microseconds. + +- keypad,num-rows: 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. + +- keypad,num-columns: 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. + +- linux,keymap: The keymap for keys as described in the binding document + devicetree/bindings/input/matrix-keymap.txt. + +- pinctrl: Should specify pin control groups used for this controller. + See ../pinctrl/pinctrl-bindings.txt for details. + +- clocks: Must contain one entry, for the module clock. + See ../clocks/clock-bindings.txt for details. + +- clock-names: Names of the clocks listed in clocks property in the same order. + +Optional Properties: +- wakeup-source: use any event on keypad as wakeup event. + +Example: + + keypad: kp@10010000 { + compatible = "mediatek,kp"; + reg = <0 0x10010000 0 0x1000>; + wakeup-source; + interrupts = ; + clocks = <&clk26m>; + clock-names = "kpd"; + }; + + &keypad { + mediatek,debounce-us = <32000>; + keypad,num-rows = <8>; + keypad,num-columns = <9>; + linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_VOLUMEDOWN) >; + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&kpd_gpios_def_cfg>; + };