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/Linux-v5.10/Documentation/devicetree/bindings/input/
Dimx-keypad.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/imx-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Freescale i.MX Keypad Port(KPP) device tree bindings
10 - Liu Ying <gnuiyl@gmail.com>
13 - $ref: "/schemas/input/matrix-keymap.yaml#"
16 The KPP is designed to interface with a keypad matrix with 2-point contact
17 or 3-point contact keys. The KPP is designed to simplify the software task
18 of scanning a keypad matrix. The KPP is capable of detecting, debouncing,
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/Linux-v5.10/arch/arm/boot/dts/
Dimx31.dtsi1 // SPDX-License-Identifier: GPL-2.0+
3 // Copyright 2016-2018 Vladimir Zapolskiy <vz@mleia.com>
4 // Copyright 2012 Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
7 #address-cells = <1>;
8 #size-cells = <1>;
11 * pre-existing /chosen node to be available to insert the
34 #address-cells = <1>;
35 #size-cells = <0>;
38 compatible = "arm,arm1136jf-s";
44 avic: interrupt-controller@68000000 {
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Dimx27.dtsi1 // SPDX-License-Identifier: GPL-2.0+
5 #include "imx27-pinfunc.h"
7 #include <dt-bindings/clock/imx27-clock.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/input/input.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
13 #address-cells = <1>;
14 #size-cells = <1>;
17 * pre-existing /chosen node to be available to insert the
43 aitc: aitc-interrupt-controller@10040000 {
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Dimx35.dtsi1 // SPDX-License-Identifier: GPL-2.0
7 #include "imx35-pinfunc.h"
10 #address-cells = <1>;
11 #size-cells = <1>;
14 * pre-existing /chosen node to be available to insert the
38 #address-cells = <1>;
39 #size-cells = <0>;
42 compatible = "arm,arm1136jf-s";
48 avic: avic-interrupt-controller@68000000 {
49 compatible = "fsl,imx35-avic", "fsl,avic";
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Dimx51.dtsi1 // SPDX-License-Identifier: GPL-2.0+
6 #include "imx51-pinfunc.h"
7 #include <dt-bindings/clock/imx5-clock.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/input/input.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
13 #address-cells = <1>;
14 #size-cells = <1>;
17 * pre-existing /chosen node to be available to insert the
42 tzic: tz-interrupt-controller@e0000000 {
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Dimx25.dtsi1 // SPDX-License-Identifier: GPL-2.0+
5 #include <dt-bindings/gpio/gpio.h>
6 #include "imx25-pinfunc.h"
9 #address-cells = <1>;
10 #size-cells = <1>;
13 * pre-existing /chosen node to be available to insert the
46 #address-cells = <1>;
47 #size-cells = <0>;
50 compatible = "arm,arm926ej-s";
56 asic: asic-interrupt-controller@68000000 {
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Dimx53.dtsi1 // SPDX-License-Identifier: GPL-2.0+
6 #include "imx53-pinfunc.h"
7 #include <dt-bindings/clock/imx5-clock.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/input/input.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
13 #address-cells = <1>;
14 #size-cells = <1>;
17 * pre-existing /chosen node to be available to insert the
50 #address-cells = <1>;
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Dimx6sll.dtsi1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
4 * Copyright 2017-2018 NXP.
8 #include <dt-bindings/clock/imx6sll-clock.h>
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/interrupt-controller/arm-gic.h>
11 #include "imx6sll-pinfunc.h"
14 #address-cells = <1>;
15 #size-cells = <1>;
44 #address-cells = <1>;
45 #size-cells = <0>;
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Dimx6sl.dtsi1 // SPDX-License-Identifier: GPL-2.0
5 #include <dt-bindings/interrupt-controller/irq.h>
6 #include "imx6sl-pinfunc.h"
7 #include <dt-bindings/clock/imx6sl-clock.h>
10 #address-cells = <1>;
11 #size-cells = <1>;
14 * pre-existing /chosen node to be available to insert the
47 #address-cells = <1>;
48 #size-cells = <0>;
51 compatible = "arm,cortex-a9";
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Dimx6ul.dtsi1 // SPDX-License-Identifier: GPL-2.0
5 #include <dt-bindings/clock/imx6ul-clock.h>
6 #include <dt-bindings/gpio/gpio.h>
7 #include <dt-bindings/input/input.h>
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include "imx6ul-pinfunc.h"
12 #address-cells = <1>;
13 #size-cells = <1>;
16 * pre-existing /chosen node to be available to insert the
55 #address-cells = <1>;
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Dimx6qdl.dtsi1 // SPDX-License-Identifier: GPL-2.0+
6 #include <dt-bindings/clock/imx6qdl-clock.h>
7 #include <dt-bindings/input/input.h>
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
11 #address-cells = <1>;
12 #size-cells = <1>;
15 * pre-existing /chosen node to be available to insert the
54 compatible = "fsl,imx-ckil", "fixed-clock";
55 #clock-cells = <0>;
56 clock-frequency = <32768>;
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Dimx6sx.dtsi1 // SPDX-License-Identifier: GPL-2.0
5 #include <dt-bindings/clock/imx6sx-clock.h>
6 #include <dt-bindings/gpio/gpio.h>
7 #include <dt-bindings/input/input.h>
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include "imx6sx-pinfunc.h"
12 #address-cells = <1>;
13 #size-cells = <1>;
16 * pre-existing /chosen node to be available to insert the
57 #address-cells = <1>;
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Dimx7s.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
6 #include <dt-bindings/clock/imx7d-clock.h>
7 #include <dt-bindings/power/imx7-power.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/input/input.h>
10 #include <dt-bindings/interrupt-controller/arm-gic.h>
11 #include <dt-bindings/reset/imx7-reset.h>
12 #include "imx7d-pinfunc.h"
15 #address-cells = <1>;
16 #size-cells = <1>;
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/Linux-v5.10/drivers/input/keyboard/
Dimx_keypad.c1 // SPDX-License-Identifier: GPL-2.0
70 * -stable: achieved after a complete debounce process.
71 * -unstable: used in the debouncing process.
85 if ((keypad->cols_en_mask & (1 << col)) == 0) in imx_keypad_scan_matrix()
90 * 3. configure columns as totem-pole to discharge capacitance. in imx_keypad_scan_matrix()
91 * 4. configure columns as open-drain. in imx_keypad_scan_matrix()
93 reg_val = readw(keypad->mmio_base + KPDR); in imx_keypad_scan_matrix()
95 writew(reg_val, keypad->mmio_base + KPDR); in imx_keypad_scan_matrix()
97 reg_val = readw(keypad->mmio_base + KPCR); in imx_keypad_scan_matrix()
98 reg_val &= ~((keypad->cols_en_mask & 0xff) << 8); in imx_keypad_scan_matrix()
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