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drivers: pinctrl: npcx: add initial pin-controller driver

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This CL is the initial version for npcx pinctrl driver and introduces
pinctrl nodes for both IO-pads and peripheral devices for each npcx
series. Users can set pin configuration via these nodes in the board
layout DT file. It also wraps all configurations related to pin-muxing
in pinctrl_soc.h. Regarding the other pin properties, we will implement
them later.

Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
This commit is contained in:
Mulin Chao 2022-02-21 01:19:31 -08:00 • committed by Maureen Helm
commit d53d574bf0
14 changed files with 1225 additions and 0 deletions
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8
dts/arm/nuvoton/npcx.dtsi
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@ -69,6 +69,14 @@
status = "disabled";
};
/** Dummy pinctrl node. It will be initialized with defaults based on the SoC series.
* Then, the user can override the pin control options at the board level.
*/
pinctrl: pinctrl {
compatible = "nuvoton,npcx-pinctrl";
status = "okay";
};
soc {
bbram: bb-ram@400af000 {
compatible = "nuvoton,npcx-bbram";