bindings/pinctrl/mediatek%2Cmt8188-pinctrl.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/mediatek,mt8188-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10   - Hui Liu <hui.liu@mediatek.com>
17     const: mediatek,mt8188-pinctrl
19   gpio-controller: true
21   '#gpio-cells':
25       are defined in <dt-bindings/gpio/gpio.h>.
28   gpio-ranges:
31   gpio-line-names: true
35       - description: gpio registers base address
36       - description: rm group io configuration registers base address
37       - description: lt group io configuration registers base address
38       - description: lm group io configuration registers base address
39       - description: rt group io configuration registers base address
40       - description: eint registers base address
42   reg-names:
44       - const: iocfg0
45       - const: iocfg_rm
46       - const: iocfg_lt
47       - const: iocfg_lm
48       - const: iocfg_rt
49       - const: eint
51   interrupt-controller: true
53   '#interrupt-cells':
60   mediatek,rsel-resistance-in-si-unit:
63       We provide two methods to select the resistance for I2C when pull up or
65       resistance value(ohm). This flag is used to identify if the method is
66       resistance(si unit) value.
70   '-pins$':
77         $ref: /schemas/pinctrl/pincfg-node.yaml
81           pinctrl groups available on the machine. Each subnode will list the
91               defined as macros in dt-bindings/pinctrl/mediatek,mt8188-pinfunc.h
94           drive-strength:
97           drive-strength-microamp:
100           bias-pull-down:
102               - type: boolean
103               - enum: [100, 101, 102, 103]
105               - enum: [200, 201, 202, 203, 204, 205, 206, 207]
107               - enum: [75000, 5000]
111               define and resistance value.
113               set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &
116               For pull down type is RSEL, it can add RSEL define & resistance
117               value(ohm) to set different resistance by identifying property
118               "mediatek,rsel-resistance-in-si-unit". It can support
123               mt8188. It can also support resistance value(ohm) "75000" & "5000"
126           bias-pull-up:
128               - type: boolean
129               - enum: [100, 101, 102, 103]
131               - enum: [200, 201, 202, 203, 204, 205, 206, 207]
133               - enum: [1000, 1500, 2000, 3000, 4000, 5000, 10000, 75000]
137               and resistance value.
139               different resistance. It can support "MTK_PUPD_SET_R1R0_00" &
142               For pull up type is RSEL, it can add RSEL define & resistance
143               value(ohm) to set different resistance by identifying property
144               "mediatek,rsel-resistance-in-si-unit". It can support
149               mt8188. It can also support resistance value(ohm) "1000" & "1500"
152           bias-disable: true
154           output-high: true
156           output-low: true
158           input-enable: true
160           input-disable: true
162           input-schmitt-enable: true
164           input-schmitt-disable: true
167           - pinmux
170   - compatible
171   - reg
172   - interrupts
173   - interrupt-controller
174   - '#interrupt-cells'
175   - gpio-controller
176   - '#gpio-cells'
177   - gpio-ranges
182   - |
183     #include <dt-bindings/pinctrl/mediatek,mt8188-pinfunc.h>
184     #include <dt-bindings/interrupt-controller/arm-gic.h>
187         compatible = "mediatek,mt8188-pinctrl";
194         reg-names = "iocfg0", "iocfg_rm",
197         gpio-controller;
198         #gpio-cells = <2>;
199         gpio-ranges = <&pio 0 0 176>;
200         interrupt-controller;
202         #interrupt-cells = <2>;
204         pio-pins {
207                 output-low;
211         spi0-pins {
212             pins-spi {
216                 drive-strength = <6>;
218             pins-spi-mi {
220                 bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
224         i2c0-pins {
228                 bias-disable;
229                 drive-strength-microamp = <1000>;