On 1/20/21 2:25 PM, Dave Gerlach wrote: > The AM642 EValuation Module (EVM) is a board that provides access to > various peripherals available on the AM642 SoC, such as PCIe, USB 2.0, > CPSW Ethernet, ADC, and more. > > Introduce support for the AM642 EVM to enable mmc boot, including > enabling UART and I2C on the board. > > Signed-off-by: Aswath Govindraju <a-govindraju@xxxxxx> > Signed-off-by: Faiz Abbas <faiz_abbas@xxxxxx> > Signed-off-by: Suman Anna <s-anna@xxxxxx> > Signed-off-by: Nishanth Menon <nm@xxxxxx> > Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx> > --- > arch/arm64/boot/dts/ti/Makefile | 2 + > arch/arm64/boot/dts/ti/k3-am642-evm.dts | 246 ++++++++++++++++++++++++ > 2 files changed, 248 insertions(+) > create mode 100644 arch/arm64/boot/dts/ti/k3-am642-evm.dts > > diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile > index 65506f21ba30..c687739e2bca 100644 > --- a/arch/arm64/boot/dts/ti/Makefile > +++ b/arch/arm64/boot/dts/ti/Makefile > @@ -11,3 +11,5 @@ dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb > dtb-$(CONFIG_ARCH_K3) += k3-j721e-common-proc-board.dtb > > dtb-$(CONFIG_ARCH_K3) += k3-j7200-common-proc-board.dtb > + > +dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb nit, please update the copyright year to include 2021 on this file. regards Suman > diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts > new file mode 100644 > index 000000000000..1f1787750fef > --- /dev/null > +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts > @@ -0,0 +1,246 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/ > + */ > + > +/dts-v1/; > + > +#include <dt-bindings/leds/common.h> > +#include "k3-am642.dtsi" > + > +/ { > + compatible = "ti,am642-evm", "ti,am642"; > + model = "Texas Instruments AM642 EVM"; > + > + chosen { > + stdout-path = "serial2:115200n8"; > + bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000"; > + }; > + > + memory@80000000 { > + device_type = "memory"; > + /* 2G RAM */ > + reg = <0x00000000 0x80000000 0x00000000 0x80000000>; > + > + }; > + > + reserved-memory { > + #address-cells = <2>; > + #size-cells = <2>; > + ranges; > + > + secure_ddr: optee@9e800000 { > + reg = <0x00 0x9e800000 0x00 0x01800000>; /* for OP-TEE */ > + alignment = <0x1000>; > + no-map; > + }; > + }; > + > + evm_12v0: fixedregulator-evm12v0 { > + /* main DC jack */ > + compatible = "regulator-fixed"; > + regulator-name = "evm_12v0"; > + regulator-min-microvolt = <12000000>; > + regulator-max-microvolt = <12000000>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + vsys_5v0: fixedregulator-vsys5v0 { > + /* output of LM5140 */ > + compatible = "regulator-fixed"; > + regulator-name = "vsys_5v0"; > + regulator-min-microvolt = <5000000>; > + regulator-max-microvolt = <5000000>; > + vin-supply = <&evm_12v0>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + vsys_3v3: fixedregulator-vsys3v3 { > + /* output of LM5140 */ > + compatible = "regulator-fixed"; > + regulator-name = "vsys_3v3"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + vin-supply = <&evm_12v0>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + vdd_mmc1: fixed-regulator-sd { > + /* TPS2051BD */ > + compatible = "regulator-fixed"; > + regulator-name = "vdd_mmc1"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + regulator-boot-on; > + enable-active-high; > + vin-supply = <&vsys_3v3>; > + gpio = <&exp1 6 GPIO_ACTIVE_HIGH>; > + }; > + > + vddb: fixedregulator-vddb { > + compatible = "regulator-fixed"; > + regulator-name = "vddb_3v3_display"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + vin-supply = <&vsys_3v3>; > + regulator-always-on; > + regulator-boot-on; > + }; > + > + leds { > + compatible = "gpio-leds"; > + > + led-0 { > + label = "am64-evm:red:heartbeat"; > + gpios = <&exp1 16 GPIO_ACTIVE_HIGH>; > + linux,default-trigger = "heartbeat"; > + function = LED_FUNCTION_HEARTBEAT; > + default-state = "off"; > + }; > + }; > +}; > + > +&main_pmx0 { > + main_mmc1_pins_default: main-mmc1-pins-default { > + pinctrl-single,pins = < > + AM64X_IOPAD(0x0294, PIN_INPUT_PULLUP, 0) /* (J19) MMC1_CMD */ > + AM64X_IOPAD(0x028c, PIN_INPUT_PULLDOWN, 0) /* (L20) MMC1_CLK */ > + AM64X_IOPAD(0x0288, PIN_INPUT_PULLUP, 0) /* (K21) MMC1_DAT0 */ > + AM64X_IOPAD(0x0284, PIN_INPUT_PULLUP, 0) /* (L21) MMC1_DAT1 */ > + AM64X_IOPAD(0x0280, PIN_INPUT_PULLUP, 0) /* (K19) MMC1_DAT2 */ > + AM64X_IOPAD(0x027c, PIN_INPUT_PULLUP, 0) /* (K18) MMC1_DAT3 */ > + AM64X_IOPAD(0x0298, PIN_INPUT_PULLUP, 0) /* (D19) MMC1_SDCD */ > + AM64X_IOPAD(0x029c, PIN_INPUT, 0) /* (C20) MMC1_SDWP */ > + AM64X_IOPAD(0x0290, PIN_INPUT, 0) /* MMC1_CLKLB */ > + >; > + }; > + > + main_uart0_pins_default: main-uart0-pins-default { > + pinctrl-single,pins = < > + AM64X_IOPAD(0x0238, PIN_INPUT, 0) /* (B16) UART0_CTSn */ > + AM64X_IOPAD(0x023c, PIN_OUTPUT, 0) /* (A16) UART0_RTSn */ > + AM64X_IOPAD(0x0230, PIN_INPUT, 0) /* (D15) UART0_RXD */ > + AM64X_IOPAD(0x0234, PIN_OUTPUT, 0) /* (C16) UART0_TXD */ > + >; > + }; > + > + main_i2c1_pins_default: main-i2c1-pins-default { > + pinctrl-single,pins = < > + AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */ > + AM64X_IOPAD(0x026c, PIN_INPUT_PULLUP, 0) /* (B19) I2C1_SDA */ > + >; > + }; > +}; > + > +&main_uart0 { > + pinctrl-names = "default"; > + pinctrl-0 = <&main_uart0_pins_default>; > +}; > + > +/* main_uart1 is reserved for firmware usage */ > +&main_uart1 { > + status = "reserved"; > +}; > + > +&main_uart2 { > + status = "disabled"; > +}; > + > +&main_uart3 { > + status = "disabled"; > +}; > + > +&main_uart4 { > + status = "disabled"; > +}; > + > +&main_uart5 { > + status = "disabled"; > +}; > + > +&main_uart6 { > + status = "disabled"; > +}; > + > +&mcu_uart0 { > + status = "disabled"; > +}; > + > +&mcu_uart1 { > + status = "disabled"; > +}; > + > +&main_i2c1 { > + pinctrl-names = "default"; > + pinctrl-0 = <&main_i2c1_pins_default>; > + clock-frequency = <400000>; > + > + exp1: gpio@22 { > + compatible = "ti,tca6424"; > + reg = <0x22>; > + gpio-controller; > + #gpio-cells = <2>; > + gpio-line-names = "GPIO_eMMC_RSTn", "CAN_MUX_SEL", > + "GPIO_CPSW1_RST", "GPIO_RGMII1_RST", > + "GPIO_RGMII2_RST", "GPIO_PCIe_RST_OUT", > + "MMC1_SD_EN", "FSI_FET_SEL", > + "MCAN0_STB_3V3", "MCAN1_STB_3V3", > + "CPSW_FET_SEL", "CPSW_FET2_SEL", > + "PRG1_RGMII2_FET_SEL", "TEST_GPIO2", > + "GPIO_OLED_RESETn", "VPP_LDO_EN", > + "TEST_LED1", "TP92", "TP90", "TP88", > + "TP87", "TP86", "TP89", "TP91"; > + }; > + > + /* osd9616p0899-10 */ > + display@3c { > + compatible = "solomon,ssd1306fb-i2c"; > + reg = <0x3c>; > + reset-gpios = <&exp1 14 GPIO_ACTIVE_LOW>; > + vbat-supply = <&vddb>; > + solomon,height = <16>; > + solomon,width = <96>; > + solomon,com-seq; > + solomon,com-invdir; > + solomon,page-offset = <0>; > + solomon,prechargep1 = <2>; > + solomon,prechargep2 = <13>; > + }; > +}; > + > +&mcu_i2c0 { > + status = "disabled"; > +}; > + > +&mcu_i2c1 { > + status = "disabled"; > +}; > + > +&mcu_spi0 { > + status = "disabled"; > +}; > + > +&mcu_spi1 { > + status = "disabled"; > +}; > + > +&sdhci0 { > + /* emmc */ > + bus-width = <8>; > + non-removable; > + ti,driver-strength-ohm = <50>; > + disable-wp; > +}; > + > +&sdhci1 { > + /* SD/MMC */ > + vmmc-supply = <&vdd_mmc1>; > + pinctrl-names = "default"; > + bus-width = <4>; > + pinctrl-0 = <&main_mmc1_pins_default>; > + ti,driver-strength-ohm = <50>; > + disable-wp; > +}; >
