From 50ba0232fd5312410f1b65247e774244f89a628e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 20:50:36 +0200 Subject: Merging upstream version 6.8.9. Signed-off-by: Daniel Baumann --- .../boot/dts/marvell/ac5x-rd-carrier-cn9131.dts | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts (limited to 'arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts') diff --git a/arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts b/arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts new file mode 100644 index 0000000000..2a0b070000 --- /dev/null +++ b/arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (C) 2023 Marvell International Ltd. + * + * Device tree for the AC5X RD Type 7 Com Express carrier board, + * Utilizing the CN913x COM Express CPU module board. + * This specific carrier board in this mode of operation (external) + * only maintains a PCIe link with the CPU module, + * which does not require any special DTS definitions. + * + * AC5X RD works here in external mode (switch selectable at the back of the + * board), and connect via an external cable a kit + * which would allow it to use an external CN9131 CPU COM Express module, + * mounted on top of an interposer kit. + * + * So in this case, once the switch is set to external mode as explained above, + * the AC5X RD becomes part of the carrier solution. + * + * When the board boots in the external CPU mode, the internal CPU is disabled, + * and only the switch portion of the SOC acts as a PCIe end-point, Hence there + * is no need to describe this internal (disabled CPU) in the device tree. + * + * There is no CPU booting in this mode on the carrier, only on the + * CN9131 COM Express CPU module. + * What runs the Linux is the CN9131 on the COM Express CPU module, + * And it accesses the switch end-point on the AC5X RD portion of the carrier + * via PCIe. + */ + +#include "cn9131-db-comexpress.dtsi" +#include "ac5x-rd-carrier.dtsi" + +/ { + model = "Marvell Armada AC5X RD COM EXPRESS type 7 carrier board with CN9131 CPU module"; + compatible = "marvell,cn9131-ac5x-carrier", "marvell,rd-ac5x-carrier", + "marvell,cn9131-cpu-module", "marvell,cn9131", + "marvell,armada-ap807-quad", "marvell,armada-ap807"; + + memory@0 { + device_type = "memory"; + reg = <0x0 0x0 0x2 0x00000000>; + }; + +}; -- cgit v1.2.3