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[93.70.53.177]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b046d0b0135sm372121966b.73.2025.09.04.06.23.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Sep 2025 06:23:03 -0700 (PDT) From: Stefano Radaelli To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Stefano Radaelli , Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-kernel@lists.infradead.org Subject: [PATCH v6 2/3] arm64: dts: ti: Add support for Variscite VAR-SOM-AM62P Date: Thu, 4 Sep 2025 15:22:29 +0200 Message-ID: <20250904132240.36819-3-stefano.radaelli21@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250904132240.36819-1-stefano.radaelli21@gmail.com> References: <20250904132240.36819-1-stefano.radaelli21@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add device tree support for the Variscite VAR-SOM-AM62P system on module. This SOM is designed to be used with various carrier boards. The module includes: - AM62P Sitara MPU processor - Up to 8GB of DDR4-3733 memory - eMMC storage memory - PS6522430 chip as a Power Management Integrated circuit (PMIC) - Integrated 10/100/1000 Mbps Ethernet Transceiver Analog Devices ADIN1300 - Resistive touch panel interface controller TI TSC2046 - I2C interfaces Only SOM-specific peripherals are enabled by default. Carrier board specific interfaces are left disabled to be enabled in the respective carrier board device trees. Link: https://www.variscite.it/product/system-on-module-som/cortex-a53-krai= t/var-som-am62p-ti-sitara-am62px/ Signed-off-by: Stefano Radaelli --- v6: - Removed unnecessary sdhci properties v5: - Update to match up with coding guidelines for device tree v4: - Moved every MCUs-related node into the SOM dtsi - Removed unused audio node v3: - Change compatible string to match existing mainline format - Lower case hex digits - Generic node names v2: - Fixed warnings and cleanup arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi | 385 ++++++++++++++++++ 1 file changed, 385 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi b/arch/arm64/boo= t/dts/ti/k3-am62p5-var-som.dtsi new file mode 100644 index 000000000000..da037993574f --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am62p5-var-som.dtsi @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Common dtsi for Variscite VAR-SOM-AM62P + * + * Link: https://www.variscite.com/product/system-on-module-som/cortex-a53= -krait/var-som-am62p-ti-sitara-am62px/ + * + * Copyright (C) 2025 Variscite Ltd. - https://www.variscite.com/ + * + */ + +/dts-v1/; + +#include +#include +#include +#include +#include +#include "k3-am62p5.dtsi" + +/ { + compatible =3D "variscite,var-som-am62p", "ti,am62p5"; + + wifi_pwrseq: wifi-pwrseq { + compatible =3D "mmc-pwrseq-simple"; + post-power-on-delay-ms =3D <100>; + power-off-delay-us =3D <10000>; + reset-gpios =3D <&main_gpio0 54 GPIO_ACTIVE_LOW>, /* WIFI_PWR_EN */ + <&main_gpio0 59 GPIO_ACTIVE_LOW>; /* WIFI_EN */ + }; + + mmc_pwrseq: mmc-pwrseq { + compatible =3D "mmc-pwrseq-emmc"; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_mmc_pwrseq>; + reset-gpios =3D <&main_gpio0 49 GPIO_ACTIVE_LOW>; + }; + + memory@80000000 { + /* 8G RAM */ + reg =3D <0x00000000 0x80000000 0x00000000 0x80000000>, + <0x00000008 0x80000000 0x00000001 0x80000000>; + device_type =3D "memory"; + bootph-pre-ram; + }; + + opp-table { + /* Add 1.4GHz OPP for am62p5-sk board. Requires VDD_CORE at 0v85 */ + opp-1400000000 { + opp-hz =3D /bits/ 64 <1400000000>; + opp-supported-hw =3D <0x01 0x0004>; + clock-latency-ns =3D <6000000>; + }; + }; + + reserved_memory: reserved-memory { + #address-cells =3D <2>; + #size-cells =3D <2>; + ranges; + + rtos_ipc_memory_region: rtos-ipc-memory@9b500000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9b500000 0x00 0x00300000>; + no-map; + }; + + mcu_r5fss0_core0_dma_memory_region: mcu-r5fss-dma-memory-region@9b800000= { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9b800000 0x00 0x00100000>; + no-map; + }; + + mcu_r5fss0_core0_memory_region: mcu-r5fss-memory-region@9b900000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9b900000 0x00 0x00f00000>; + no-map; + }; + + wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9c800000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9c800000 0x00 0x00100000>; + no-map; + }; + + wkup_r5fss0_core0_memory_region: r5f-memory@9c900000 { + compatible =3D "shared-dma-pool"; + reg =3D <0x00 0x9c900000 0x00 0x01e00000>; + no-map; + }; + + secure_tfa_ddr: tfa@9e780000 { + reg =3D <0x00 0x9e780000 0x00 0x80000>; + no-map; + }; + + secure_ddr: optee@9e800000 { + reg =3D <0x00 0x9e800000 0x00 0x01800000>; /* for OP-TEE */ + no-map; + }; + }; + + reg_3v3: regulator-3v3 { + compatible =3D "regulator-fixed"; + regulator-name =3D "On-module +V3.3"; + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + regulator-always-on; + regulator-boot-on; + }; + + reg_1v8: regulator-1v8 { + compatible =3D "regulator-fixed"; + regulator-name =3D "On-module +V1.8"; + regulator-min-microvolt =3D <1800000>; + regulator-max-microvolt =3D <1800000>; + vin-supply =3D <®_3v3>; + regulator-always-on; + regulator-boot-on; + }; + + reg_3v3_phy: regulator-3v3-phy { + compatible =3D "regulator-fixed"; + regulator-name =3D "On-module +V3.3_PHY"; + gpios =3D <&main_gpio0 45 GPIO_ACTIVE_HIGH>; + enable-active-high; + regulator-always-on; + }; +}; + +&cpsw3g { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_rgmii1>; +}; + +&cpsw3g_mdio { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_mdio1>; + status =3D "okay"; + + cpsw3g_phy0: ethernet-phy@4 { + compatible =3D "ethernet-phy-id0283.bc30"; + reg =3D <4>; + reset-gpios =3D <&main_gpio0 46 GPIO_ACTIVE_LOW>; + reset-assert-us =3D <10000>; + reset-deassert-us =3D <100000>; + }; +}; + +&cpsw_port1 { + /* + * The required RGMII TX and RX 2ns delays are implemented directly + * in hardware via passive delay elements on the SOM PCB. + * No delay configuration is needed in software via PHY driver. + */ + phy-mode =3D "rgmii"; + phy-handle =3D <&cpsw3g_phy0>; + status =3D "okay"; +}; + +&main_i2c2 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_i2c2>; + clock-frequency =3D <400000>; + status =3D "okay"; +}; + +&main_i2c3 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_i2c3>; + clock-frequency =3D <400000>; + status =3D "okay"; +}; + +&main_pmx0 { + pinctrl_mmc_pwrseq: main-emmc-pwrseq-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x00c8, PIN_OUTPUT, 7) /* (AB23) VOUT0_DATA4.GPIO0_49 */ + >; + }; + + pinctrl_i2c2: main-i2c2-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x00b0, PIN_INPUT_PULLUP, 1) /* (T22) GPMC0_CSn2.I2C2_SCL = */ + AM62PX_IOPAD(0x00b4, PIN_INPUT_PULLUP, 1) /* (U25) GPMC0_CSn3.I2C2_SDA = */ + >; + }; + + pinctrl_i2c3: main-i2c3-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x01d0, PIN_INPUT_PULLUP, 2) /* (A23) UART0_CTSn.I2C3_SCL = */ + AM62PX_IOPAD(0x01d4, PIN_INPUT_PULLUP, 2) /* (C22) UART0_RTSn.I2C3_SDA = */ + >; + }; + + pinctrl_mdio1: main-mdio1-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x0160, PIN_OUTPUT, 0) /* (F17) MDIO0_MDC */ + AM62PX_IOPAD(0x015c, PIN_INPUT, 0) /* (F16) MDIO0_MDIO */ + >; + }; + + pinctrl_mmc2: main-mmc2-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x0120, PIN_INPUT_PULLUP, 0) /* (K24) MMC2_CMD */ + AM62PX_IOPAD(0x0118, PIN_INPUT_PULLDOWN, 0) /* (K21) MMC2_CLK */ + AM62PX_IOPAD(0x011c, PIN_INPUT_PULLUP, 0) /* () MMC2_CLKLB */ + AM62PX_IOPAD(0x0114, PIN_INPUT_PULLUP, 0) /* (K23) MMC2_DAT0 */ + AM62PX_IOPAD(0x0110, PIN_INPUT_PULLUP, 0) /* (K22) MMC2_DAT1 */ + AM62PX_IOPAD(0x010c, PIN_INPUT_PULLUP, 0) /* (L20) MMC2_DAT2 */ + AM62PX_IOPAD(0x0108, PIN_INPUT_PULLUP, 0) /* (L21) MMC2_DAT3 */ + >; + }; + + pinctrl_rgmii1: main-rgmii1-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x014c, PIN_INPUT, 0) /* (B15) RGMII1_RD0 */ + AM62PX_IOPAD(0x0150, PIN_INPUT, 0) /* (B16) RGMII1_RD1 */ + AM62PX_IOPAD(0x0154, PIN_INPUT, 0) /* (A14) RGMII1_RD2 */ + AM62PX_IOPAD(0x0158, PIN_INPUT, 0) /* (B14) RGMII1_RD3 */ + AM62PX_IOPAD(0x0148, PIN_INPUT, 0) /* (A16) RGMII1_RXC */ + AM62PX_IOPAD(0x0144, PIN_INPUT, 0) /* (A15) RGMII1_RX_CTL */ + AM62PX_IOPAD(0x0134, PIN_INPUT, 0) /* (A18) RGMII1_TD0 */ + AM62PX_IOPAD(0x0138, PIN_INPUT, 0) /* (C17) RGMII1_TD1 */ + AM62PX_IOPAD(0x013c, PIN_INPUT, 0) /* (A17) RGMII1_TD2 */ + AM62PX_IOPAD(0x0140, PIN_INPUT, 0) /* (C16) RGMII1_TD3 */ + AM62PX_IOPAD(0x0130, PIN_INPUT, 0) /* (B17) RGMII1_TXC */ + AM62PX_IOPAD(0x012c, PIN_INPUT, 0) /* (B18) RGMII1_TX_CTL */ + >; + bootph-all; + }; + + pinctrl_spi0: main-spi0-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x01bc, PIN_OUTPUT, 0) /* (B21) SPI0_CLK */ + AM62PX_IOPAD(0x01b4, PIN_OUTPUT, 0) /* (D20) SPI0_CS0 */ + AM62PX_IOPAD(0x01c0, PIN_OUTPUT, 0) /* (B20) SPI0_D0 */ + AM62PX_IOPAD(0x01c4, PIN_INPUT, 0) /* (C21) SPI0_D1 */ + >; + }; + + pinctrl_uart5: main-uart5-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x00ec, PIN_INPUT, 4) /* (AC21) VOUT0_DATA13.UART5_CTSn */ + AM62PX_IOPAD(0x00e8, PIN_OUTPUT, 4) /* (AD21) VOUT0_DATA12.UART5_RTSn */ + AM62PX_IOPAD(0x00d0, PIN_INPUT, 4) /* (AC23) VOUT0_DATA6.UART5_RXD */ + AM62PX_IOPAD(0x00d4, PIN_OUTPUT, 4) /* (AE23) VOUT0_DATA7.UART5_TXD */ + >; + }; + + pinctrl_bt: main-btgrp-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x00f4, PIN_OUTPUT, 7) /* (Y20) VOUT0_DATA15.GPIO0_60 (BT_= EN) */ + >; + }; + + pinctrl_restouch: main-restouch-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x00c4, PIN_INPUT_PULLUP, 7) /* (Y23) VOUT0_DATA3.GPIO0_48= */ + >; + }; + + pinctrl_wifi: main-wifi-default-pins { + pinctrl-single,pins =3D < + AM62PX_IOPAD(0x00dc, PIN_OUTPUT, 7) /* (AC22) VOUT0_DATA9.GPIO0_54 - WI= FI_PWR_EN - */ + AM62PX_IOPAD(0x00f0, PIN_OUTPUT, 7) /* (AA20) VOUT0_DATA14.GPIO0_59 - W= IFI_EN - */ + >; + }; +}; + +&mcu_pmx0 { + pinctrl_wkup_clkout0: wkup-clkout0-default-pins { + pinctrl-single,pins =3D < + AM62PX_MCU_IOPAD(0x0084, PIN_OUTPUT, 0) /* (F13) WKUP_CLKOUT0 */ + >; + }; +}; + +&main_spi0 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_spi0>; + ti,pindir-d0-out-d1-in; + status =3D "okay"; +}; + +&main_uart5 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_uart5>, <&pinctrl_bt>; + uart-has-rtscts; + status =3D "okay"; + + bluetooth { + compatible =3D "nxp,88w8987-bt"; + }; +}; + +&sdhci0 { + ti,driver-strength-ohm =3D <50>; + mmc-pwrseq =3D <&mmc_pwrseq>; + bootph-all; + status =3D "okay"; +}; + +&sdhci2 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_mmc2>, <&pinctrl_wifi>; + bus-width =3D <4>; + non-removable; + keep-power-in-suspend; + mmc-pwrseq =3D <&wifi_pwrseq>; + ti,fails-without-test-cd; + status =3D "okay"; +}; + +&usbss0 { + ti,vbus-divider; +}; + +&usbss1 { + ti,vbus-divider; +}; + +&mailbox0_cluster0 { + status =3D "okay"; + + mbox_r5_0: mbox-r5-0 { + ti,mbox-rx =3D <0 0 0>; + ti,mbox-tx =3D <1 0 0>; + }; +}; + +&mailbox0_cluster1 { + status =3D "okay"; + + mbox_mcu_r5_0: mbox-mcu-r5-0 { + ti,mbox-rx =3D <0 0 0>; + ti,mbox-tx =3D <1 0 0>; + }; +}; + +&mcu_r5fss0 { + status =3D "okay"; +}; + +&mcu_r5fss0_core0 { + mboxes =3D <&mailbox0_cluster1 &mbox_mcu_r5_0>; + memory-region =3D <&mcu_r5fss0_core0_dma_memory_region>, + <&mcu_r5fss0_core0_memory_region>; +}; + +&wkup_r5fss0 { + status =3D "okay"; +}; + +&wkup_r5fss0_core0 { + mboxes =3D <&mailbox0_cluster0 &mbox_r5_0>; + memory-region =3D <&wkup_r5fss0_core0_dma_memory_region>, + <&wkup_r5fss0_core0_memory_region>; +}; + +/* mcu_gpio0 and mcu_gpio_intr are reserved for mcu firmware usage */ +&mcu_gpio0 { + status =3D "reserved"; +}; + +&mcu_gpio_intr { + status =3D "reserved"; +}; + +&wkup_rtc0 { + status =3D "disabled"; +}; + +&wkup_rti0 { + /* WKUP RTI0 is used by DM firmware */ + status =3D "reserved"; +}; + +&wkup_uart0 { + /* WKUP UART0 is used by DM firmware */ + status =3D "reserved"; +}; + +&main_uart1 { + /* Main UART1 is used by TIFS firmware */ + status =3D "reserved"; +}; --=20 2.43.0