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07999587b7
Update all the Tegra DT bindings to require resets/reset-names properties where the HW module has reset inputs. Remove any entries from clocks or clock-names that were only required to identify reset inputs, rather than referring to real clocks. This is a DT-ABI-incompatible change. It is the first of two changes required for me to consider the Tegra DT bindings as stable, the other being conversion to the common DMA DT bindings. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
* Tegra keyboard controller
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The key controller has maximum 24 pins to make matrix keypad. Any pin
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can be configured as row or column. The maximum column pin can be 8
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and maximum row pins can be 16 for Tegra20/Tegra30.
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Required properties:
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- compatible: "nvidia,tegra20-kbc"
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- reg: Register base address of KBC.
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- interrupts: Interrupt number for the KBC.
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- nvidia,kbc-row-pins: The KBC pins which are configured as row. This is an
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array of pin numbers which is used as rows.
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- nvidia,kbc-col-pins: The KBC pins which are configured as column. This is an
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array of pin numbers which is used as column.
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- linux,keymap: The keymap for keys as described in the binding document
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devicetree/bindings/input/matrix-keymap.txt.
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- clocks: Must contain one entry, for the module clock.
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See ../clocks/clock-bindings.txt for details.
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- resets: Must contain an entry for each entry in reset-names.
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See ../reset/reset.txt for details.
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- reset-names: Must include the following entries:
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- kbc
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Optional properties, in addition to those specified by the shared
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matrix-keyboard bindings:
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- linux,fn-keymap: a second keymap, same specification as the
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matrix-keyboard-controller spec but to be used when the KEY_FN modifier
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key is pressed.
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- nvidia,debounce-delay-ms: delay in milliseconds per row scan for debouncing
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- nvidia,repeat-delay-ms: delay in milliseconds before repeat starts
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- nvidia,ghost-filter: enable ghost filtering for this device
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- nvidia,wakeup-source: configure keyboard as a wakeup source for suspend/resume
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Example:
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keyboard: keyboard {
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compatible = "nvidia,tegra20-kbc";
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reg = <0x7000e200 0x100>;
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interrupts = <0 85 0x04>;
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clocks = <&tegra_car 36>;
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resets = <&tegra_car 36>;
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reset-names = "kbc";
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nvidia,ghost-filter;
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nvidia,debounce-delay-ms = <640>;
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nvidia,kbc-row-pins = <0 1 2>; /* pin 0, 1, 2 as rows */
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nvidia,kbc-col-pins = <11 12 13>; /* pin 11, 12, 13 as columns */
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linux,keymap = <0x00000074
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0x00010067
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0x00020066
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0x01010068
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0x02000069
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0x02010070
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0x02020071>;
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};
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