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75 lines
3.1 KiB
75 lines
3.1 KiB
/* Device Tree Overlay for ERPS ADC */
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "ti,beaglebone", "ti,beaglebone-black";
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part-number = "PRU-Overlay";
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version = "00A0";
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/* This overlay uses the following resources */
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exclusive-use =
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"P9.25",
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"P9.26",
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"P9.27",
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"P9.28",
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"P9.29",
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"P9.30",
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"P9.31",
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"P8.27", "P8.28",
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"P8.29", "P8.30","P8.39", "P8.40", "P8.41",
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"P8.42", "P8.43", "P8.44", "P8.45",
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"P8.46", "pru0", "pru1";
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fragment@0 {
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target = <&am33xx_pinmux>;
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__overlay__ {
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pru_pru_pins: pinmux_pru_pru_pins { // The PRU pin modes
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// mmode bits 0,1,2 Multiplexer Mode 5 = PRU Output, 6 = PRU input
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// puden bit 3 Enable Internal Pulldown Resistor 0 = Enable, 1 = Disable
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// putypese1 bit 4 Pull-up or pull-down 0 = Pull Down 1 = Pull Up
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// rxactive bit 5 Input Active 0 = Output, 1 = Input
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// slewctrl bit 6 Slew Control 0 = Fast, 1 = Slow
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pinctrl-single,pins = <
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// 0XE4 0x0d // p8_29 pr1_pru1_pru_r31_9, MODE6 | INPUT | PRU | SPI DATA OUT
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0XE0 0x0d // p8_27 pr1_pru1_pru_r30_8, MODE5 | OUTPUT | PRU | SCLK PRU1
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0XE8 0x2e // p8_28 pr1_pru1_pru_r31_10, MODE6 | INPUT | PRU | SPI Data Ready
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0XE4 0x0d // p8_29 pr1_pru1_pru_r30_9, MODE5 | OUTPUT | PRU | SYNC
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0XEC 0x2e // p8_30 pr1_pru1_pru_r30_11 MODE6 | INPUT | PRU | SPI DATA OUT
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0XB8 0x0d // p8_39 pr1_pru1_pru_r30_6, MODE5 | OUTPUT | PRU | PWDN8
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0XBC 0x0d // p8_40 pr1_pru1_pru_r30_7, MODE5 | OUTPUT | PRU | PWDN7
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0XB0 0x0d // p8_41 pr1_pru1_pru_r30_4, MODE5 | OUTPUT | PRU | PWDN6
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0XB4 0x0d // p8_42 pr1_pru1_pru_r30_5, MODE5 | OUTPUT | PRU | PWDN5
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0XA8 0x0d // p8_43 pr1_pru1_pru_r30_2, MODE5 | OUTPUT | PRU | PWDN4
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0XAC 0x0d // p8_44 pr1_pru1_pru_r30_3, MODE5 | OUTPUT | PRU | PWDN3
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0XA0 0x0d // p8_45 pr1_pru1_pru_r30_0, MODE5 | OUTPUT | PRU | PWDN2
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0XA4 0x0d // p8_46 pr1_pru1_pru_r30_1, MODE5 | OUTPUT | PRU | PWDN1
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0X1AC 0x0f // p9_25 GPIO3[21] MODE7 | OUTPUT | PRU | SCLK LTC2948
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0X180 0x0f // p9_26 GPIO0[14] MODE7 | OUTPUT | PRU | SDI LTC2948
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0X1A4 0x2e // p9_27 pr1_pru0_pru_r30_5, MODE5 | INPUT | PRU | SPI Data Ready ADC_A_C
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0X19C 0x2e // p9_28 pr1_pru0_pru_r31_3, MODE6 | INPUT | PRU | SPI Data Out ADC_A_C
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0X194 0x0d // p9_29 pr1_pru0_pru_r31_1, MODE6 | OUTPUT | PRU | SCLK ADC_A_C
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0X198 0x2f // P9_30 GPIO3[16] MODE7 | INPUT | PRU | INT LTC 2948
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0X190 0x2f // p9_31 GPIO3[14], MODE7 | INPUT | PRU | SDO LTC2948
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>;
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};
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};
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};
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fragment@1 { // Enable the PRUSS
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target = <&pruss>;
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__overlay__ {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&pru_pru_pins>;
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};
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};
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};
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