1 Intel x86 PINCTRL/GPIO controller 2 3 Pin-muxing on broadwell devices can be described with a node for the PINCTRL 4 master node and a set of child nodes for each required pin state on the SoC. 5 These pin states use phandles and are referred to but a configuration section 6 which lists all pins in the device. 7 8 The PINCTRL master node requires the following properties: 9 - compatible : "intel,x86-broadwell-pinctrl" 10 11 Pin state nodes must be sub-nodes of the pinctrl master node. The must have 12 a phandle. They can contain the following optional properties: 13 - mode-gpio - forces the pin into GPIO mode 14 - output-value - sets the default output value of the GPIO, 0 (low, default) 15 or 1 (high) 16 - direction - sets the direction of the gpio, either PIN_INPUT (default) 17 or PIN_OUTPUT 18 - invert - the input pin is inverted 19 - trigger - sets the trigger type, either TRIGGER_EDGE (default) or 20 TRIGGER_LEVEL 21 - sense-disable - the input state sense is disabled 22 - owner 0 sets the owner of the pin, either OWNER_ACPI (default) or 23 ONWER_GPIO 24 - route - sets whether the pin is routed, either PIRQ_APIC_MASK or 25 PIRQ_APIC_ROUTE 26 - irq-enable - the interrupt is enabled 27 - reset-rsmrst - the pin will only be reset by RSMRST 28 - pirq-apic - the pin will be routed to the IOxAPIC 29 30 The first pin state will be the default, so pins without a configuration will 31 use that. 32 33 The pin configuration node is also a sub-node of the pinctrl master node, but 34 does not have a phandle. It has a single property: 35 36 - config - configuration to use for each pin. Each entry has of 3 cells: 37 - GPIO number (0..94) 38 - phandle of configuration (above) 39 - interrupt number (0..15) 40 41 There should be one entry for each pin (i.e. 95 entries). 42 But missing pins will receive the default configuration. 43 44 Example: 45 46 pch_pinctrl { 47 compatible = "intel,x86-broadwell-pinctrl"; 48 49 /* Put this first: it is the default */ 50 gpio_unused: gpio-unused { 51 mode-gpio; 52 direction = <PIN_INPUT>; 53 owner = <OWNER_GPIO>; 54 sense-disable; 55 }; 56 57 gpio_acpi_sci: acpi-sci { 58 mode-gpio; 59 direction = <PIN_INPUT>; 60 invert; 61 route = <ROUTE_SCI>; 62 }; 63 64 gpio_acpi_smi: acpi-smi { 65 mode-gpio; 66 direction = <PIN_INPUT>; 67 invert; 68 route = <ROUTE_SMI>; 69 }; 70 71 gpio_input: gpio-input { 72 mode-gpio; 73 direction = <PIN_INPUT>; 74 owner = <OWNER_GPIO>; 75 }; 76 77 gpio_input_invert: gpio-input-invert { 78 mode-gpio; 79 direction = <PIN_INPUT>; 80 owner = <OWNER_GPIO>; 81 invert; 82 }; 83 84 gpio_native: gpio-native { 85 }; 86 87 gpio_out_high: gpio-out-high { 88 mode-gpio; 89 direction = <PIN_OUTPUT>; 90 output-value = <1>; 91 owner = <OWNER_GPIO>; 92 sense-disable; 93 }; 94 95 gpio_out_low: gpio-out-low { 96 mode-gpio; 97 direction = <PIN_OUTPUT>; 98 output-value = <0>; 99 owner = <OWNER_GPIO>; 100 sense-disable; 101 }; 102 103 gpio_pirq: gpio-pirq { 104 mode-gpio; 105 direction = <PIN_INPUT>; 106 owner = <OWNER_GPIO>; 107 pirq-apic = <PIRQ_APIC_ROUTE>; 108 }; 109 110 soc_gpio@0 { 111 config = 112 <0 &gpio_unused 0>, /* unused */ 113 <1 &gpio_unused 0>, /* unused */ 114 <2 &gpio_unused 0>, /* unused */ 115 <3 &gpio_unused 0>, /* unused */ 116 <4 &gpio_native 0>, /* native: i2c0_sda_gpio4 */ 117 <5 &gpio_native 0>, /* native: i2c0_scl_gpio5 */ 118 <6 &gpio_native 0>, /* native: i2c1_sda_gpio6 */ 119 <7 &gpio_native 0>, /* native: i2c1_scl_gpio7 */ 120 <8 &gpio_acpi_sci 0>, /* pch_lte_wake_l */ 121 <9 &gpio_input_invert 0>,/* trackpad_int_l (wake) */ 122 <10 &gpio_acpi_sci 0>, /* pch_wlan_wake_l */ 123 <11 &gpio_unused 0>, /* unused */ 124 <12 &gpio_unused 0>, /* unused */ 125 <13 &gpio_pirq 3>, /* trackpad_int_l (pirql) */ 126 <14 &gpio_pirq 4>, /* touch_int_l (pirqm) */ 127 <15 &gpio_unused 0>, /* unused (strap) */ 128 <16 &gpio_input 0>, /* pch_wp */ 129 <17 &gpio_unused 0>, /* unused */ 130 <18 &gpio_unused 0>, /* unused */ 131 <19 &gpio_unused 0>, /* unused */ 132 <20 &gpio_native 0>, /* pcie_wlan_clkreq_l */ 133 <21 &gpio_out_high 0>, /* pp3300_ssd_en */ 134 <22 &gpio_unused 0>, /* unused */ 135 <23 &gpio_out_low 0>, /* pp3300_autobahn_en */ 136 <24 &gpio_unused 0>, /* unused */ 137 <25 &gpio_input 0>, /* ec_in_rw */ 138 <26 &gpio_unused 0>, /* unused */ 139 <27 &gpio_acpi_sci 0>, /* pch_wake_l */ 140 <28 &gpio_unused 0>, /* unused */ 141 <29 &gpio_unused 0>, /* unused */ 142 <30 &gpio_native 0>, /* native: pch_suswarn_l */ 143 <31 &gpio_native 0>, /* native: acok_buf */ 144 <32 &gpio_native 0>, /* native: lpc_clkrun_l */ 145 <33 &gpio_native 0>, /* native: ssd_devslp */ 146 <34 &gpio_acpi_smi 0>, /* ec_smi_l */ 147 <35 &gpio_acpi_smi 0>, /* pch_nmi_dbg_l (route in nmi_en) */ 148 <36 &gpio_acpi_sci 0>, /* ec_sci_l */ 149 <37 &gpio_unused 0>, /* unused */ 150 <38 &gpio_unused 0>, /* unused */ 151 <39 &gpio_unused 0>, /* unused */ 152 <40 &gpio_native 0>, /* native: pch_usb1_oc_l */ 153 <41 &gpio_native 0>, /* native: pch_usb2_oc_l */ 154 <42 &gpio_unused 0>, /* wlan_disable_l */ 155 <43 &gpio_out_high 0>, /* pp1800_codec_en */ 156 <44 &gpio_unused 0>, /* unused */ 157 <45 &gpio_acpi_sci 0>, /* dsp_int - codec wake */ 158 <46 &gpio_pirq 6>, /* hotword_det_l_3v3 (pirqo) - codec irq */ 159 <47 &gpio_out_low 0>, /* ssd_reset_l */ 160 <48 &gpio_unused 0>, /* unused */ 161 <49 &gpio_unused 0>, /* unused */ 162 <50 &gpio_unused 0>, /* unused */ 163 <51 &gpio_unused 0>, /* unused */ 164 <52 &gpio_input 0>, /* sim_det */ 165 <53 &gpio_unused 0>, /* unused */ 166 <54 &gpio_unused 0>, /* unused */ 167 <55 &gpio_unused 0>, /* unused */ 168 <56 &gpio_unused 0>, /* unused */ 169 <57 &gpio_out_high 0>, /* codec_reset_l */ 170 <58 &gpio_unused 0>, /* unused */ 171 <59 &gpio_out_high 0>, /* lte_disable_l */ 172 <60 &gpio_unused 0>, /* unused */ 173 <61 &gpio_native 0>, /* native: pch_sus_stat */ 174 <62 &gpio_native 0>, /* native: pch_susclk */ 175 <63 &gpio_native 0>, /* native: pch_slp_s5_l */ 176 <64 &gpio_unused 0>, /* unused */ 177 <65 &gpio_input 0>, /* ram_id3 */ 178 <66 &gpio_input 0>, /* ram_id3_old (strap) */ 179 <67 &gpio_input 0>, /* ram_id0 */ 180 <68 &gpio_input 0>, /* ram_id1 */ 181 <69 &gpio_input 0>, /* ram_id2 */ 182 <70 &gpio_unused 0>, /* unused */ 183 <71 &gpio_native 0>, /* native: modphy_en */ 184 <72 &gpio_unused 0>, /* unused */ 185 <73 &gpio_unused 0>, /* unused */ 186 <74 &gpio_unused 0>, /* unused */ 187 <75 &gpio_unused 0>, /* unused */ 188 <76 &gpio_unused 0>, /* unused */ 189 <77 &gpio_unused 0>, /* unused */ 190 <78 &gpio_unused 0>, /* unused */ 191 <79 &gpio_unused 0>, /* unused */ 192 <80 &gpio_unused 0>, /* unused */ 193 <81 &gpio_unused 0>, /* unused */ 194 <82 &gpio_native 0>, /* native: ec_rcin_l */ 195 <83 &gpio_native 0>, /* gspi0_cs */ 196 <84 &gpio_native 0>, /* gspi0_clk */ 197 <85 &gpio_native 0>, /* gspi0_miso */ 198 <86 &gpio_native 0>, /* gspi0_mosi (strap) */ 199 <87 &gpio_unused 0>, /* unused */ 200 <88 &gpio_unused 0>, /* unused */ 201 <89 &gpio_out_high 0>, /* pp3300_sd_en */ 202 <90 &gpio_unused 0>, /* unused */ 203 <91 &gpio_unused 0>, /* unused */ 204 <92 &gpio_unused 0>, /* unused */ 205 <93 &gpio_unused 0>, /* unused */ 206 <94 &gpio_unused 0 >; /* unused */ 207 }; 208 }; 209