Re: [PATCH v3 5/5] arm64: dts: ti: Add support for AM642 EVM

From: Suman Anna <s-anna@ti.com>
To: Dave Gerlach <d-gerlach@ti.com>, Nishanth Menon <nm@ti.com>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<devicetree@vger.kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Tony Lindgren <tony@atomide.com>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Sekhar Nori <nsekhar@ti.com>,
	Kishon Vijay Abraham <kishon@ti.com>,
	Lokesh Vutla <lokeshvutla@ti.com>,
	Aswath Govindraju <a-govindraju@ti.com>
Subject: Re: [PATCH v3 5/5] arm64: dts: ti: Add support for AM642 EVM
Date: Mon, 25 Jan 2021 10:44:17 -0600	[thread overview]
Message-ID: <08e9cf72-e3dc-71cb-7eee-4d4e56f83836@ti.com> (raw)
In-Reply-To: <20210120202532.9011-6-d-gerlach@ti.com>

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@ti.com>
> Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
> Signed-off-by: Suman Anna <s-anna@ti.com>
> Signed-off-by: Nishanth Menon <nm@ti.com>
> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
> ---
>  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

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;
> +};
> 