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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/pinctrl/mediatek,mt8195-pinctrl.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: MediaTek MT8195 Pin Controller8 9maintainers:10 - Sean Wang <sean.wang@mediatek.com>11 12description:13 The MediaTek's MT8195 Pin controller is used to control SoC pins.14 15properties:16 compatible:17 const: mediatek,mt8195-pinctrl18 19 gpio-controller: true20 21 '#gpio-cells':22 description:23 Number of cells in GPIO specifier. Since the generic GPIO binding is used,24 the amount of cells must be specified as 2. See the below mentioned gpio25 binding representation for description of particular cells.26 const: 227 28 gpio-ranges:29 description: GPIO valid number range.30 maxItems: 131 32 gpio-line-names: true33 34 reg:35 description:36 Physical address base for GPIO base registers. There are 8 GPIO physical37 address base in mt8195.38 maxItems: 839 40 reg-names:41 description:42 GPIO base register names.43 maxItems: 844 45 interrupt-controller: true46 47 '#interrupt-cells':48 const: 249 50 interrupts:51 description: The interrupt outputs to sysirq.52 maxItems: 153 54 mediatek,rsel-resistance-in-si-unit:55 type: boolean56 description:57 Identifying i2c pins pull up/down type which is RSEL. It can support RSEL58 define or si unit value(ohm) to set different resistance.59 60# PIN CONFIGURATION NODES61patternProperties:62 '-pins$':63 type: object64 additionalProperties: false65 patternProperties:66 '^pins':67 type: object68 additionalProperties: false69 description: |70 A pinctrl node should contain at least one subnodes representing the71 pinctrl groups available on the machine. Each subnode will list the72 pins it needs, and how they should be configured, with regard to muxer73 configuration, pullups, drive strength, input enable/disable and input74 schmitt.75 An example of using macro:76 pincontroller {77 /* GPIO0 set as multifunction GPIO0 */78 gpio-pins {79 pins {80 pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;81 }82 };83 /* GPIO8 set as multifunction SDA0 */84 i2c0-pins {85 pins {86 pinmux = <PINMUX_GPIO8__FUNC_SDA0>;87 }88 };89 };90 $ref: pinmux-node.yaml91 92 properties:93 pinmux:94 description:95 Integer array, represents gpio pin number and mux setting.96 Supported pin number and mux varies for different SoCs, and are97 defined as macros in dt-bindings/pinctrl/<soc>-pinfunc.h directly.98 99 drive-strength:100 enum: [2, 4, 6, 8, 10, 12, 14, 16]101 102 drive-strength-microamp:103 enum: [125, 250, 500, 1000]104 105 bias-pull-down:106 oneOf:107 - type: boolean108 - enum: [100, 101, 102, 103]109 description: mt8195 pull down PUPD/R0/R1 type define value.110 - enum: [200, 201, 202, 203, 204, 205, 206, 207]111 description: mt8195 pull down RSEL type define value.112 - enum: [75000, 5000]113 description: mt8195 pull down RSEL type si unit value(ohm).114 description: |115 For pull down type is normal, it don't need add RSEL & R1R0 define116 and resistance value.117 For pull down type is PUPD/R0/R1 type, it can add R1R0 define to118 set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &119 "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" &120 "MTK_PUPD_SET_R1R0_11" define in mt8195.121 For pull down type is RSEL, it can add RSEL define & resistance122 value(ohm) to set different resistance by identifying property123 "mediatek,rsel-resistance-in-si-unit".124 It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001"125 & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011"126 & "MTK_PULL_SET_RSEL_100" & "MTK_PULL_SET_RSEL_101"127 & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111"128 define in mt8195. It can also support resistance value(ohm)129 "75000" & "5000" in mt8195.130 131 An example of using RSEL define:132 pincontroller {133 i2c0_pin {134 pins {135 pinmux = <PINMUX_GPIO8__FUNC_SDA0>;136 bias-pull-down = <MTK_PULL_SET_RSEL_001>;137 }138 };139 };140 An example of using si unit resistance value(ohm):141 &pio {142 mediatek,rsel-resistance-in-si-unit;143 }144 pincontroller {145 i2c0_pin {146 pins {147 pinmux = <PINMUX_GPIO8__FUNC_SDA0>;148 bias-pull-down = <75000>;149 }150 };151 };152 153 bias-pull-up:154 oneOf:155 - type: boolean156 - enum: [100, 101, 102, 103]157 description: mt8195 pull up PUPD/R0/R1 type define value.158 - enum: [200, 201, 202, 203, 204, 205, 206, 207]159 description: mt8195 pull up RSEL type define value.160 - enum: [1000, 1500, 2000, 3000, 4000, 5000, 10000, 75000]161 description: mt8195 pull up RSEL type si unit value(ohm).162 description: |163 For pull up type is normal, it don't need add RSEL & R1R0 define164 and resistance value.165 For pull up type is PUPD/R0/R1 type, it can add R1R0 define to166 set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &167 "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" &168 "MTK_PUPD_SET_R1R0_11" define in mt8195.169 For pull up type is RSEL, it can add RSEL define & resistance170 value(ohm) to set different resistance by identifying property171 "mediatek,rsel-resistance-in-si-unit".172 It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001"173 & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011"174 & "MTK_PULL_SET_RSEL_100" & "MTK_PULL_SET_RSEL_101"175 & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111"176 define in mt8195. It can also support resistance value(ohm) "1000"177 & "1500" & "2000" & "3000" & "4000" & "5000" & "10000" & "75000"178 in mt8195.179 An example of using RSEL define:180 pincontroller {181 i2c0-pins {182 pins {183 pinmux = <PINMUX_GPIO8__FUNC_SDA0>;184 bias-pull-up = <MTK_PULL_SET_RSEL_001>;185 }186 };187 };188 An example of using si unit resistance value(ohm):189 &pio {190 mediatek,rsel-resistance-in-si-unit;191 }192 pincontroller {193 i2c0-pins {194 pins {195 pinmux = <PINMUX_GPIO8__FUNC_SDA0>;196 bias-pull-up = <1000>;197 }198 };199 };200 201 bias-disable: true202 203 output-high: true204 205 output-low: true206 207 input-enable: true208 209 input-disable: true210 211 input-schmitt-enable: true212 213 input-schmitt-disable: true214 215 required:216 - pinmux217 218allOf:219 - $ref: pinctrl.yaml#220 221required:222 - compatible223 - reg224 - interrupts225 - interrupt-controller226 - '#interrupt-cells'227 - gpio-controller228 - '#gpio-cells'229 - gpio-ranges230 231additionalProperties: false232 233examples:234 - |235 #include <dt-bindings/pinctrl/mt8195-pinfunc.h>236 #include <dt-bindings/interrupt-controller/arm-gic.h>237 #238 pio: pinctrl@10005000 {239 compatible = "mediatek,mt8195-pinctrl";240 reg = <0x10005000 0x1000>,241 <0x11d10000 0x1000>,242 <0x11d30000 0x1000>,243 <0x11d40000 0x1000>,244 <0x11e20000 0x1000>,245 <0x11eb0000 0x1000>,246 <0x11f40000 0x1000>,247 <0x1000b000 0x1000>;248 reg-names = "iocfg0", "iocfg_bm", "iocfg_bl",249 "iocfg_br", "iocfg_lm", "iocfg_rb",250 "iocfg_tl", "eint";251 gpio-controller;252 #gpio-cells = <2>;253 gpio-ranges = <&pio 0 0 144>;254 interrupt-controller;255 interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH 0>;256 #interrupt-cells = <2>;257 258 pio-pins {259 pins {260 pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;261 output-low;262 };263 };264 265 spi0-pins {266 pins-spi {267 pinmux = <PINMUX_GPIO132__FUNC_SPIM0_CSB>,268 <PINMUX_GPIO134__FUNC_SPIM0_MO>,269 <PINMUX_GPIO133__FUNC_SPIM0_CLK>;270 bias-disable;271 };272 pins-spi-mi {273 pinmux = <PINMUX_GPIO135__FUNC_SPIM0_MI>;274 bias-pull-down;275 };276 };277 278 i2c0-pins {279 pins {280 pinmux = <PINMUX_GPIO8__FUNC_SDA0>,281 <PINMUX_GPIO9__FUNC_SCL0>;282 bias-disable;283 drive-strength-microamp = <1000>;284 };285 };286 };287