From: João Paulo Gonçalves <joao.goncalves@xxxxxxxxxxx> Add Toradex Verdin Ivy carrier board support. One notable feature of Ivy is the analog inputs. These inputs are multiplexed, allowing the same input to measure either voltage or current. For current measurements, a GPIO switch enables or disables the shunt resistor. This process is automatically managed by the Linux kernel using the IIO and MUX subsystems. Voltage measurement is always enabled, but the voltage measured by the ADC is scaled by a cascade voltage divider. In the device tree, the equivalent gain of the voltage divider is used, which can be calculated as follows: ------------ + | .-. R1=30K | | | | '-' |------------------- Analog Input (AIN) | | .-. .-. R2=10K | | R3=30K | | | | | | '-' '-' | | | |-------- | .-. + | R4=10K | | | | | ADC Input (Channels 0 and 1) | '-' - | | - -----------| |-------- === === GND GND Vin = Analog Input (AIN) Vout = ADC Input Rth = Thevenin Equiv. Resistance Vth = Thevenin Equiv. Voltage RL = Load Resistor R1 = 30K, R2 = 10K, R3 = 30K, R4 = 10K RL = R4 = 10K Rth = (R1 // R2) + R3 = 37500 Ohms Vth = (Vin * R2) / (R1 + R2) = Vin/4; Vout = (Vth * RL)/ (Rth + RL) = Vth/4.75 = Vin/19 Gain = Vout/Vin = 1/19 https://www.toradex.com/products/carrier-board/ivy-carrier-board Signed-off-by: João Paulo Gonçalves <joao.goncalves@xxxxxxxxxxx> Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> --- arch/arm64/boot/dts/ti/Makefile | 2 + .../arm64/boot/dts/ti/k3-am62-verdin-ivy.dtsi | 655 ++++++++++++++++++ .../dts/ti/k3-am625-verdin-nonwifi-ivy.dts | 22 + .../boot/dts/ti/k3-am625-verdin-wifi-ivy.dts | 22 + 4 files changed, 701 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am62-verdin-ivy.dtsi create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-nonwifi-ivy.dts create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-wifi-ivy.dts diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index bcd392c3206e..72a4d576c719 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -16,10 +16,12 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-rdk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dev.dtb +dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-ivy.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-mallow.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-yavia.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dev.dtb +dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-ivy.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-mallow.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-yavia.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-1-4-ghz-opp.dtbo diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin-ivy.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin-ivy.dtsi new file mode 100644 index 000000000000..71c29eab0eee --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin-ivy.dtsi @@ -0,0 +1,655 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright 2024 Toradex + * + * Common dtsi for Verdin AM62 SoM on Ivy carrier board + * + * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62 + * https://www.toradex.com/products/carrier-board/ivy-carrier-board + */ + +#include <dt-bindings/mux/mux.h> +#include <dt-bindings/leds/common.h> +#include <dt-bindings/net/ti-dp83867.h> + +/ { + /* AIN1 Voltage w/o AIN1_MODE gpio control */ + ain1_voltage_unmanaged: voltage-divider-ain1 { + compatible = "voltage-divider"; + #io-channel-cells = <1>; + io-channels = <&ivy_adc1 0>; + full-ohms = <19>; + output-ohms = <1>; + }; + + /* AIN1 Current w/o AIN1_MODE gpio control */ + ain1_current_unmanaged: current-sense-shunt-ain1 { + compatible = "current-sense-shunt"; + #io-channel-cells = <0>; + io-channels = <&ivy_adc1 1>; + shunt-resistor-micro-ohms = <100000000>; + }; + + /* AIN1_MODE - SODIMM 216 */ + ain1_mode_mux_ctrl: mux-controller-0 { + compatible = "gpio-mux"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_5>; + #mux-control-cells = <0>; + mux-gpios = <&main_gpio0 40 GPIO_ACTIVE_HIGH>; + }; + + ain1-voltage { + compatible = "io-channel-mux"; + channels = "ain1_voltage", ""; + io-channels = <&ain1_voltage_unmanaged 0>; + io-channel-names = "parent"; + mux-controls = <&ain1_mode_mux_ctrl>; + settle-time-us = <1000>; + }; + + ain1-current { + compatible = "io-channel-mux"; + channels = "", "ain1_current"; + io-channels = <&ain1_current_unmanaged>; + io-channel-names = "parent"; + mux-controls = <&ain1_mode_mux_ctrl>; + settle-time-us = <1000>; + }; + + /* AIN2 Voltage w/o AIN2_MODE gpio control */ + ain2_voltage_unmanaged: voltage-divider-ain2 { + compatible = "voltage-divider"; + #io-channel-cells = <1>; + io-channels = <&ivy_adc2 0>; + full-ohms = <19>; + output-ohms = <1>; + }; + + /* AIN2 Current w/o AIN2_MODE gpio control */ + ain2_current_unmanaged: current-sense-shunt-ain2 { + compatible = "current-sense-shunt"; + #io-channel-cells = <0>; + io-channels = <&ivy_adc2 1>; + shunt-resistor-micro-ohms = <100000000>; + }; + + /* AIN2_MODE - SODIMM 218 */ + ain2_mode_mux_ctrl: mux-controller-1 { + compatible = "gpio-mux"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_6>; + #mux-control-cells = <0>; + mux-gpios = <&main_gpio0 36 GPIO_ACTIVE_HIGH>; + }; + + ain2-voltage { + compatible = "io-channel-mux"; + channels = "ain2_voltage", ""; + io-channels = <&ain2_voltage_unmanaged 0>; + io-channel-names = "parent"; + mux-controls = <&ain2_mode_mux_ctrl>; + settle-time-us = <1000>; + }; + + ain2-current { + compatible = "io-channel-mux"; + channels = "", "ain2_current"; + io-channels = <&ain2_current_unmanaged>; + io-channel-names = "parent"; + mux-controls = <&ain2_mode_mux_ctrl>; + settle-time-us = <1000>; + }; + + leds { + compatible = "gpio-leds"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ivy_leds>; + + /* D7 Blue - SODIMM 30 - LEDs.GPIO1 */ + led-0 { + color = <LED_COLOR_ID_BLUE>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <1>; + gpios = <&main_gpio1 11 GPIO_ACTIVE_HIGH>; + }; + + /* D7 Green - SODIMM 32 - LEDs.GPIO2 */ + led-1 { + color = <LED_COLOR_ID_GREEN>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <1>; + gpios = <&main_gpio1 12 GPIO_ACTIVE_HIGH>; + }; + + /* D7 Red - SODIMM 34 - LEDs.GPIO3 */ + led-2 { + color = <LED_COLOR_ID_RED>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <1>; + gpios = <&main_gpio1 10 GPIO_ACTIVE_HIGH>; + }; + + /* D8 Blue - SODIMM 36 - LEDs.GPIO4 */ + led-3 { + color = <LED_COLOR_ID_BLUE>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <2>; + gpios = <&main_gpio1 9 GPIO_ACTIVE_HIGH>; + }; + + /* D8 Green - SODIMM 54 - LEDs.GPIO5 */ + led-4 { + color = <LED_COLOR_ID_GREEN>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <2>; + gpios = <&main_gpio0 11 GPIO_ACTIVE_HIGH>; + }; + + /* D8 Red - SODIMM 44 - LEDs.GPIO6 */ + led-5 { + color = <LED_COLOR_ID_RED>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <2>; + gpios = <&main_gpio0 37 GPIO_ACTIVE_HIGH>; + }; + + /* D9 Blue - SODIMM 46 - LEDs.GPIO7 */ + led-6 { + color = <LED_COLOR_ID_BLUE>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <3>; + gpios = <&main_gpio0 34 GPIO_ACTIVE_HIGH>; + }; + + /* D9 Red - SODIMM 48 - LEDs.GPIO8 */ + led-7 { + color = <LED_COLOR_ID_RED>; + default-state = "off"; + function = LED_FUNCTION_STATUS; + function-enumerator = <3>; + gpios = <&main_gpio0 33 GPIO_ACTIVE_HIGH>; + }; + }; + + reg_3v2_ain1: regulator-3v2-ain1 { + compatible = "regulator-fixed"; + regulator-max-microvolt = <3200000>; + regulator-min-microvolt = <3200000>; + regulator-name = "+3V2_AIN1"; + }; + + reg_3v2_ain2: regulator-3v2-ain2 { + compatible = "regulator-fixed"; + regulator-max-microvolt = <3200000>; + regulator-min-microvolt = <3200000>; + regulator-name = "+3V2_AIN2"; + }; + + /* Ivy Power Supply Input Voltage */ + ivy-input-voltage { + compatible = "voltage-divider"; + /* Verdin ADC_1 */ + io-channels = <&verdin_som_adc 7>; + full-ohms = <204700>; /* 200K + 4.7K */ + output-ohms = <4700>; + }; + + ivy-5v-voltage { + compatible = "voltage-divider"; + /* Verdin ADC_2 */ + io-channels = <&verdin_som_adc 6>; + full-ohms = <39000>; /* 27K + 12K */ + output-ohms = <12000>; + }; + + ivy-3v3-voltage { + compatible = "voltage-divider"; + /* Verdin ADC_3 */ + io-channels = <&verdin_som_adc 5>; + full-ohms = <54000>; /* 27K + 27K */ + output-ohms = <27000>; + }; + + ivy-1v8-voltage { + compatible = "voltage-divider"; + /* Verdin ADC_4 */ + io-channels = <&verdin_som_adc 4>; + full-ohms = <39000>; /* 12K + 27K */ + output-ohms = <27000>; + }; +}; + +&main_pmx0 { + pinctrl_ivy_leds: ivy-leds-default-pins { + pinctrl-single,pins = + <AM62X_IOPAD(0x019c, PIN_INPUT, 7)>, /* (B18) MCASP0_AXR1.GPIO1_9 */ /* SODIMM 36 */ + <AM62X_IOPAD(0x01a0, PIN_INPUT, 7)>, /* (B20) MCASP0_AXR0.GPIO1_10 */ /* SODIMM 34 */ + <AM62X_IOPAD(0x01a4, PIN_INPUT, 7)>, /* (A19) MCASP0_ACLKX.GPIO1_11 */ /* SODIMM 30 */ + <AM62X_IOPAD(0x01a8, PIN_INPUT, 7)>, /* (A20) MCASP0_AFSX.GPIO1_12 */ /* SODIMM 32 */ + <AM62X_IOPAD(0x0088, PIN_INPUT, 7)>, /* (L17) GPMC0_OEn_REn.GPIO0_33 */ /* SODIMM 48 */ + <AM62X_IOPAD(0x0098, PIN_INPUT, 7)>, /* (R18) GPMC0_WAIT0.GPIO0_37 */ /* SODIMM 44 */ + <AM62X_IOPAD(0x008c, PIN_INPUT, 7)>, /* (L25) GPMC0_WEn.GPIO0_34 */ /* SODIMM 46 */ + <AM62X_IOPAD(0x002c, PIN_INPUT, 7)>; /* (F23) OSPI0_CSn0.GPIO0_11 */ /* SODIMM 54 */ + }; +}; + +/* Verdin ETH */ +&cpsw3g { + status = "okay"; +}; + +/* MDIO, shared by Verdin ETH_1 (On-module PHY) and Verdin ETH_2_RGMII */ +&cpsw3g_mdio { + status = "okay"; + + cpsw3g_phy1: ethernet-phy@2 { + reg = <2>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_eth2_rgmii_int>; + interrupt-parent = <&main_gpio0>; + interrupts = <38 IRQ_TYPE_EDGE_FALLING>; + ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>; + }; +}; + +/* Verdin ETH_1*/ +&cpsw_port1 { + status = "okay"; +}; + +/* Verdin ETH_2_RGMII */ +&cpsw_port2 { + phy-handle = <&cpsw3g_phy1>; + phy-mode = "rgmii-rxid"; + status = "okay"; +}; + +&main_gpio0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ctrl_sleep_moci>, + <&pinctrl_qspi1_cs2_gpio>, + <&pinctrl_qspi1_io0_gpio>, + <&pinctrl_qspi1_io1_gpio>, + <&pinctrl_qspi1_io2_gpio>, + <&pinctrl_qspi1_io3_gpio>; + gpio-line-names = + "", /* 0 */ + "", + "", + "DIGI_1", /* SODIMM 56 */ + "DIGI_2", /* SODIMM 58 */ + "REL1", /* SODIMM 60 */ + "REL2", /* SODIMM 62 */ + "", + "", + "", + "", /* 10 */ + "", + "REL3", /* SODIMM 64 */ + "", + "", + "", + "", + "", + "", + "", + "", /* 20 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 30 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 40 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 50 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 60 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 70 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 80 */ + "", + "", + "", + "", + "", + ""; +}; + +&main_gpio1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_qspi1_dqs_gpio>; + gpio-line-names = + "", /* 0 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 10 */ + "", + "", + "", + "", + "", + "", + "", + "REL4", /* SODIMM 66 */ + "", + "", /* 20 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 30 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 40 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 50 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 60 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 70 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", /* 80 */ + "", + "", + "", + "", + "", + "", + ""; +}; + +/* Verdin I2C_1 */ +&main_i2c1 { + status = "okay"; + + temperature-sensor@4f { + compatible = "ti,tmp1075"; + reg = <0x4f>; + }; + + eeprom@57 { + compatible = "st,24c02", "atmel,24c02"; + reg = <0x57>; + pagesize = <16>; + }; +}; + +/* Verdin I2C_4 CSI */ +&main_i2c3 { + status = "okay"; + + ivy_adc1: adc@40 { + compatible = "ti,ads1119"; + reg = <0x40>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_7>; + interrupt-parent = <&main_gpio0>; + interrupts = <41 IRQ_TYPE_EDGE_FALLING>; + avdd-supply = <®_3v2_ain1>; + dvdd-supply = <®_3v2_ain1>; + vref-supply = <®_3v2_ain1>; + #address-cells = <1>; + #io-channel-cells = <1>; + #size-cells = <0>; + + /* AIN1 0-33V Voltage Input */ + channel@0 { + reg = <0>; + diff-channels = <0 1>; + }; + + /* AIN1 0-20mA Current Input */ + channel@1 { + reg = <1>; + diff-channels = <2 3>; + }; + }; + + ivy_adc2: adc@41 { + compatible = "ti,ads1119"; + reg = <0x41>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_8>; + interrupt-parent = <&main_gpio0>; + interrupts = <42 IRQ_TYPE_EDGE_FALLING>; + avdd-supply = <®_3v2_ain2>; + dvdd-supply = <®_3v2_ain2>; + vref-supply = <®_3v2_ain2>; + #address-cells = <1>; + #io-channel-cells = <1>; + #size-cells = <0>; + + /* AIN2 0-33V Voltage Input */ + channel@0 { + reg = <0>; + diff-channels = <0 1>; + }; + + /* AIN2 0-20mA Current Input */ + channel@1 { + reg = <1>; + diff-channels = <2 3>; + }; + }; +}; + +/* Verdin CAN_1 */ +&main_mcan0 { + status = "okay"; +}; + +/* Verdin SPI_1 */ +&main_spi1 { + pinctrl-0 = <&pinctrl_spi1>, + <&pinctrl_spi1_cs0>, + <&pinctrl_gpio_1>, + <&pinctrl_gpio_4>; + cs-gpios = <0>, + <&mcu_gpio0 1 GPIO_ACTIVE_LOW>, + <&mcu_gpio0 4 GPIO_ACTIVE_LOW>; + status = "okay"; + + tpm@1 { + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; + reg = <1>; + spi-max-frequency = <18500000>; + }; + + fram@2 { + compatible = "fujitsu,mb85rs256", "atmel,at25"; + reg = <2>; + address-width = <16>; + size = <32768>; + spi-max-frequency = <33000000>; + pagesize = <1>; + }; +}; + +/* Verdin UART_3 */ +&main_uart0 { + status = "okay"; +}; + +/* Verdin UART_1 */ +&main_uart1 { + status = "okay"; +}; + +&mcu_gpio0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_2>, + <&pinctrl_gpio_3>, + <&pinctrl_pcie_1_reset>; + gpio-line-names = + "", + "", + "GPIO2", /* Verdin GPIO_2 - SODIMM 208 */ + "GPIO3", /* Verdin GPIO_3 - SODIMM 210 */ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + "", + ""; +}; + +/* Verdin CAN_2 */ +&mcu_mcan0 { + status = "okay"; +}; + +/* Verdin SD_1 */ +&sdhci1 { + status = "okay"; +}; + +/* Verdin USB_1*/ +&usbss0 { + status = "okay"; +}; + +&usb0 { + status = "okay"; +}; + +/* Verdin USB_2 */ +&usbss1 { + status = "okay"; +}; + +&usb1 { + status = "okay"; +}; + +/* Verdin PCIE_1_RESET# */ +&verdin_pcie_1_reset_hog { + status = "okay"; +}; + +/* Verdin UART_2 */ +&wkup_uart0 { + linux,rs485-enabled-at-boot-time; + rs485-rts-active-low; + rs485-rx-during-tx; + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-nonwifi-ivy.dts b/arch/arm64/boot/dts/ti/k3-am625-verdin-nonwifi-ivy.dts new file mode 100644 index 000000000000..48798bf3da4f --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-nonwifi-ivy.dts @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright 2024 Toradex + * + * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62 + * https://www.toradex.com/products/carrier-board/ivy-carrier-board + */ + +/dts-v1/; + +#include "k3-am625.dtsi" +#include "k3-am62-verdin.dtsi" +#include "k3-am62-verdin-nonwifi.dtsi" +#include "k3-am62-verdin-ivy.dtsi" + +/ { + model = "Toradex Verdin AM62 on Ivy Board"; + compatible = "toradex,verdin-am62-nonwifi-ivy", + "toradex,verdin-am62-nonwifi", + "toradex,verdin-am62", + "ti,am625"; +}; diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-wifi-ivy.dts b/arch/arm64/boot/dts/ti/k3-am625-verdin-wifi-ivy.dts new file mode 100644 index 000000000000..d96d8a0ebd86 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-wifi-ivy.dts @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright 2024 Toradex + * + * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62 + * https://www.toradex.com/products/carrier-board/ivy-carrier-board + */ + +/dts-v1/; + +#include "k3-am625.dtsi" +#include "k3-am62-verdin.dtsi" +#include "k3-am62-verdin-wifi.dtsi" +#include "k3-am62-verdin-ivy.dtsi" + +/ { + model = "Toradex Verdin AM62 WB on Ivy Board"; + compatible = "toradex,verdin-am62-wifi-ivy", + "toradex,verdin-am62-wifi", + "toradex,verdin-am62", + "ti,am625"; +}; -- 2.39.5
