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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , , , , Schuyler Patton , Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , , , Oliver Hartkopp , Simon Horman Subject: [PATCH v4 3/4] DO_NOT_MERGE arm64: dts: ti: Add AM62x MCAN MAIN domain transceiver overlay Date: Mon, 1 May 2023 17:46:23 -0500 Message-ID: <20230501224624.13866-4-jm@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230501224624.13866-1-jm@ti.com> References: <20230501224624.13866-1-jm@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230501_234646_587765_F80440DF X-CRM114-Status: GOOD ( 14.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add an overlay for main domain MCAN on AM62x SK. The AM62x SK board does not have on-board CAN transceiver so instead of changing the DTB permanently, add an overlay to enable MAIN domain MCAN and support for 1 CAN transceiver. This DT overlay can be used with the following EVM: Link: https://www.ti.com/tool/TCAN1042DEVM Signed-off-by: Judith Mendez --- Changelog: v3: 1. Add link for specific board arch/arm64/boot/dts/ti/Makefile | 2 ++ .../boot/dts/ti/k3-am625-sk-mcan-main.dtso | 35 +++++++++++++++++++ 2 files changed, 37 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am625-sk-mcan-main.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index c83c9d772b81..abe15e76b614 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -9,8 +9,10 @@ # alphabetically. # Boards with AM62x SoC +k3-am625-sk-mcan-dtbs := k3-am625-sk.dtb k3-am625-sk-mcan-main.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb +dtb-$(CONFIG_ARCH_K3) += k3-am625-sk-mcan.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb # Boards with AM62Ax SoC diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk-mcan-main.dtso b/arch/arm64/boot/dts/ti/k3-am625-sk-mcan-main.dtso new file mode 100644 index 000000000000..0a7b2f394f87 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am625-sk-mcan-main.dtso @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * DT overlay for MCAN transceiver in main domain on AM625 SK + * + * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include "k3-pinctrl.h" + +&{/} { + transceiver1: can-phy0 { + compatible = "ti,tcan1042"; + #phy-cells = <0>; + max-bitrate = <5000000>; + }; +}; + +&main_pmx0 { + main_mcan0_pins_default: main-mcan0-pins-default { + pinctrl-single,pins = < + AM62X_IOPAD(0x1dc, PIN_INPUT, 0) /* (E15) MCAN0_RX */ + AM62X_IOPAD(0x1d8, PIN_OUTPUT, 0) /* (C15) MCAN0_TX */ + >; + }; +}; + +&main_mcan0 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&main_mcan0_pins_default>; + phys = <&transceiver1>; +};