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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
commit | 50ba0232fd5312410f1b65247e774244f89a628e (patch) | |
tree | fd8f2fc78e9e548af0ff9590276602ee6125be00 /arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts | |
parent | Releasing progress-linux version 6.7.12-1~progress7.99u1. (diff) | |
download | linux-50ba0232fd5312410f1b65247e774244f89a628e.tar.xz linux-50ba0232fd5312410f1b65247e774244f89a628e.zip |
Merging upstream version 6.8.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts')
-rw-r--r-- | arch/arm64/boot/dts/marvell/ac5x-rd-carrier-cn9131.dts | 44 |
1 files changed, 44 insertions, 0 deletions
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>; + }; + +}; |