On 14:54-20230424, Judith Mendez wrote: > 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. > > Signed-off-by: Judith Mendez <jm@xxxxxx> > --- > 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 > Just a headsup - for a formal patch, for the overlay, please ensure we provide link to the specific board. I dont want to end up with 1000s of overlay files, each enabling one specific peripheral instance of a small subgroup of peripheral instance. Overlays should be describing a real platform with product link. > 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>; > +}; > -- > 2.17.1 > -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
