nvidia,tegra186-pmc.yaml (6077B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/arm/tegra/nvidia,tegra186-pmc.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: NVIDIA Tegra Power Management Controller (PMC) 8 9maintainers: 10 - Thierry Reding <thierry.reding@gmail.com> 11 - Jon Hunter <jonathanh@nvidia.com> 12 13properties: 14 compatible: 15 enum: 16 - nvidia,tegra186-pmc 17 - nvidia,tegra194-pmc 18 - nvidia,tegra234-pmc 19 20 reg: 21 minItems: 4 22 maxItems: 5 23 24 reg-names: 25 minItems: 4 26 items: 27 - const: pmc 28 - const: wake 29 - const: aotag 30 - const: scratch 31 - const: misc 32 33 interrupt-controller: true 34 35 "#interrupt-cells": 36 description: Specifies the number of cells needed to encode an 37 interrupt source. The value must be 2. 38 const: 2 39 40 nvidia,invert-interrupt: 41 description: If present, inverts the PMU interrupt signal. 42 $ref: /schemas/types.yaml#/definitions/flag 43 44if: 45 properties: 46 compatible: 47 contains: 48 const: nvidia,tegra186-pmc 49then: 50 properties: 51 reg: 52 maxItems: 4 53 54 reg-names: 55 maxItems: 4 56else: 57 properties: 58 reg: 59 minItems: 5 60 61 reg-names: 62 minItems: 5 63 64patternProperties: 65 "^[a-z0-9]+-[a-z0-9]+$": 66 if: 67 type: object 68 then: 69 description: | 70 These are pad configuration nodes. On Tegra SoCs a pad is a set of 71 pins which are configured as a group. The pin grouping is a fixed 72 attribute of the hardware. The PMC can be used to set pad power 73 state and signaling voltage. A pad can be either in active or 74 power down mode. The support for power state and signaling voltage 75 configuration varies depending on the pad in question. 3.3 V and 76 1.8 V signaling voltages are supported on pins where software 77 controllable signaling voltage switching is available. 78 79 Pad configurations are described with pin configuration nodes 80 which are placed under the pmc node and they are referred to by 81 the pinctrl client properties. For more information see 82 83 Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt 84 85 The following pads are present on Tegra186: 86 87 csia, csib, dsi, mipi-bias, pex-clk-bias, pex-clk3, pex-clk2, 88 pex-clk1, usb0, usb1, usb2, usb-bias, uart, audio, hsic, dbg, 89 hdmi-dp0, hdmi-dp1, pex-cntrl, sdmmc2-hv, sdmmc4, cam, dsib, 90 dsic, dsid, csic, csid, csie, dsif, spi, ufs, dmic-hv, edp, 91 sdmmc1-hv, sdmmc3-hv, conn, audio-hv, ao-hv 92 93 The following pads are present on Tegra194: 94 95 csia, csib, mipi-bias, pex-clk-bias, pex-clk3, pex-clk2, 96 pex-clk1, eqos, pex-clk-2-bias, pex-clk-2, dap3, dap5, uart, 97 pwr-ctl, soc-gpio53, audio, gp-pwm2, gp-pwm3, soc-gpio12, 98 soc-gpio13, soc-gpio10, uart4, uart5, dbg, hdmi-dp3, hdmi-dp2, 99 hdmi-dp0, hdmi-dp1, pex-cntrl, pex-ctl2, pex-l0-rst, 100 pex-l1-rst, sdmmc4, pex-l5-rst, cam, csic, csid, csie, csif, 101 spi, ufs, csig, csih, edp, sdmmc1-hv, sdmmc3-hv, conn, 102 audio-hv, ao-hv 103 104 properties: 105 pins: 106 $ref: /schemas/types.yaml#/definitions/string 107 description: Must contain the name of the pad(s) to be 108 configured. 109 110 low-power-enable: 111 description: Configure the pad into power down mode. 112 $ref: /schemas/types.yaml#/definitions/flag 113 114 low-power-disable: 115 description: Configure the pad into active mode. 116 $ref: /schemas/types.yaml#/definitions/flag 117 118 power-source: 119 $ref: /schemas/types.yaml#/definitions/uint32 120 description: | 121 Must contain either TEGRA_IO_PAD_VOLTAGE_1V8 or 122 TEGRA_IO_PAD_VOLTAGE_3V3 to select between signalling 123 voltages. 124 125 The values are defined in 126 127 include/dt-bindings/pinctrl/pinctrl-tegra-io-pad.h 128 129 The power state can be configured on all of the above pads 130 except for ao-hv. Following pads have software configurable 131 signaling voltages: sdmmc2-hv, dmic-hv, sdmmc1-hv, sdmmc3-hv, 132 audio-hv, ao-hv. 133 134 phandle: true 135 136 required: 137 - pins 138 139 additionalProperties: false 140 141required: 142 - compatible 143 - reg 144 - reg-names 145 146additionalProperties: false 147 148dependencies: 149 interrupt-controller: ['#interrupt-cells'] 150 "#interrupt-cells": 151 required: 152 - interrupt-controller 153 154examples: 155 - | 156 #include <dt-bindings/clock/tegra186-clock.h> 157 #include <dt-bindings/interrupt-controller/arm-gic.h> 158 #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h> 159 #include <dt-bindings/memory/tegra186-mc.h> 160 #include <dt-bindings/reset/tegra186-reset.h> 161 162 pmc@c3600000 { 163 compatible = "nvidia,tegra186-pmc"; 164 reg = <0x0c360000 0x10000>, 165 <0x0c370000 0x10000>, 166 <0x0c380000 0x10000>, 167 <0x0c390000 0x10000>; 168 reg-names = "pmc", "wake", "aotag", "scratch"; 169 nvidia,invert-interrupt; 170 171 sdmmc1_3v3: sdmmc1-3v3 { 172 pins = "sdmmc1-hv"; 173 power-source = <TEGRA_IO_PAD_VOLTAGE_3V3>; 174 }; 175 176 sdmmc1_1v8: sdmmc1-1v8 { 177 pins = "sdmmc1-hv"; 178 power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>; 179 }; 180 }; 181 182 sdmmc1: mmc@3400000 { 183 compatible = "nvidia,tegra186-sdhci"; 184 reg = <0x03400000 0x10000>; 185 interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>; 186 clocks = <&bpmp TEGRA186_CLK_SDMMC1>, 187 <&bpmp TEGRA186_CLK_SDMMC_LEGACY_TM>; 188 clock-names = "sdhci", "tmclk"; 189 resets = <&bpmp TEGRA186_RESET_SDMMC1>; 190 reset-names = "sdhci"; 191 interconnects = <&mc TEGRA186_MEMORY_CLIENT_SDMMCRA &emc>, 192 <&mc TEGRA186_MEMORY_CLIENT_SDMMCWA &emc>; 193 interconnect-names = "dma-mem", "write"; 194 iommus = <&smmu TEGRA186_SID_SDMMC1>; 195 pinctrl-names = "sdmmc-3v3", "sdmmc-1v8"; 196 pinctrl-0 = <&sdmmc1_3v3>; 197 pinctrl-1 = <&sdmmc1_1v8>; 198 };