The CPSW3G instance of CPSW on AM62PX SoC provides Ethernet functionality. Currently, Ethernet is supported on Linux which runs on the A53 core on the SoC, by allocating all of the DMA resources associated with CPSW to A53_2.
In order to enable use-cases where the Ethernet traffic is sent from or consumed by various CPU cores on the SoC simultaneously, while at the same time, maintaining backward compatibility with the existing use-case of A53 being the sole entity that exchanges traffic with CPSW via DMA, update the DMA resource sharing scheme on AM62PX SoC to the following: --------------- -------------- ------------- ---------------- Resource WKUP_R5 MCU_R5 A53_2 --------------- -------------- ------------- ---------------- TX Channels [8] => 4 (Primary) 4 (Primary) 8 (Secondary) TX Rings [64] => 32 (Primary) 32 (Primary) 64 (Secondary) RX Channels [1] => 1 (Primary) 0 1 (Secondary) RX Flows [16] => 6 (Primary) 10 (Primary) 16 (Secondary) In the absence of primary owners of resources (existing use-case where A53 owns all of the CPSW DMA resources), the secondary owner can claim all of the resources as its own. For shared use-cases, the resources that are not claimed by the primary are communicated to the secondary owner allowing it to claim them. This ensures that Linux on A53_2 can continue claiming all DMA resources associated with CPSW in the absence of primary owners, while at the same time providing users the flexibility to share CPSW DMA resources across various CPU cores listed above if needed. While Linux has been mentioned as the Operating System running on A53, there is no dependency between the Operating System running on A53 and its ability to claim the CPSW DMA resources listed above. Signed-off-by: Siddharth Vadapalli <s-vadapa...@ti.com> --- Hello, This patch is based on commit d6da3dbaef Merge patch series "cmd: Add support for optee commands." of the next branch of U-Boot. Patch has been tested on AM62PX SoC running Linux, ensuring that the changes made by this patch don't break backwards compatibility i.e. Linux can continue claiming all of the CPSW DMA Resources in the absence of primary owners. Regards, Siddharth. board/ti/am62px/rm-cfg.yaml | 82 +++++++++++++++++++++++++------- board/ti/am62px/tifs-rm-cfg.yaml | 72 +++++++++++++++++++++++----- 2 files changed, 125 insertions(+), 29 deletions(-) diff --git a/board/ti/am62px/rm-cfg.yaml b/board/ti/am62px/rm-cfg.yaml index caa2f7a5a8..dc445a4b72 100644 --- a/board/ti/am62px/rm-cfg.yaml +++ b/board/ti/am62px/rm-cfg.yaml @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0+ -# Copyright (C) 2022-2023 Texas Instruments Incorporated - https://www.ti.com/ +# Copyright (C) 2022-2025 Texas Instruments Incorporated - https://www.ti.com/ # # Resource management configuration for AM62P # @@ -244,7 +244,7 @@ rm-cfg: subhdr: magic: 0x7B25 size: 8 - resasg_entries_size: 984 + resasg_entries_size: 1048 reserved: 0 resasg_entries: - @@ -476,13 +476,13 @@ rm-cfg: host_id: 12 reserved: 0 - - start_resource: 45 + start_resource: 44 num_resource: 35 type: 1802 host_id: 35 reserved: 0 - - start_resource: 45 + start_resource: 44 num_resource: 35 type: 1802 host_id: 36 @@ -494,31 +494,31 @@ rm-cfg: host_id: 30 reserved: 0 - - start_resource: 14 + start_resource: 13 num_resource: 512 type: 1805 host_id: 12 reserved: 0 - - start_resource: 526 + start_resource: 525 num_resource: 256 type: 1805 host_id: 35 reserved: 0 - - start_resource: 526 + start_resource: 525 num_resource: 256 type: 1805 host_id: 36 reserved: 0 - - start_resource: 782 + start_resource: 781 num_resource: 128 type: 1805 host_id: 30 reserved: 0 - - start_resource: 910 + start_resource: 909 num_resource: 626 type: 1805 host_id: 128 @@ -645,16 +645,28 @@ rm-cfg: reserved: 0 - start_resource: 19 - num_resource: 64 + num_resource: 32 type: 1937 host_id: 12 reserved: 0 - start_resource: 19 - num_resource: 64 + num_resource: 32 type: 1937 host_id: 36 reserved: 0 + - + start_resource: 51 + num_resource: 32 + type: 1937 + host_id: 12 + reserved: 0 + - + start_resource: 51 + num_resource: 32 + type: 1937 + host_id: 30 + reserved: 0 - start_resource: 83 num_resource: 8 @@ -699,16 +711,28 @@ rm-cfg: reserved: 0 - start_resource: 118 - num_resource: 16 + num_resource: 6 type: 1943 host_id: 12 reserved: 0 - start_resource: 118 - num_resource: 16 + num_resource: 6 type: 1943 host_id: 36 reserved: 0 + - + start_resource: 124 + num_resource: 10 + type: 1943 + host_id: 12 + reserved: 0 + - + start_resource: 124 + num_resource: 10 + type: 1943 + host_id: 30 + reserved: 0 - start_resource: 134 num_resource: 8 @@ -765,16 +789,28 @@ rm-cfg: reserved: 0 - start_resource: 19 - num_resource: 8 + num_resource: 4 type: 1956 host_id: 12 reserved: 0 - start_resource: 19 - num_resource: 8 + num_resource: 4 type: 1956 host_id: 36 reserved: 0 + - + start_resource: 23 + num_resource: 4 + type: 1956 + host_id: 12 + reserved: 0 + - + start_resource: 23 + num_resource: 4 + type: 1956 + host_id: 30 + reserved: 0 - start_resource: 27 num_resource: 1 @@ -861,16 +897,28 @@ rm-cfg: reserved: 0 - start_resource: 19 - num_resource: 16 + num_resource: 6 type: 1964 host_id: 12 reserved: 0 - start_resource: 19 - num_resource: 16 + num_resource: 6 type: 1964 host_id: 36 reserved: 0 + - + start_resource: 25 + num_resource: 10 + type: 1964 + host_id: 12 + reserved: 0 + - + start_resource: 25 + num_resource: 10 + type: 1964 + host_id: 30 + reserved: 0 - start_resource: 20 num_resource: 1 diff --git a/board/ti/am62px/tifs-rm-cfg.yaml b/board/ti/am62px/tifs-rm-cfg.yaml index a80a275046..8026974805 100644 --- a/board/ti/am62px/tifs-rm-cfg.yaml +++ b/board/ti/am62px/tifs-rm-cfg.yaml @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0+ -# Copyright (C) 2022-2023 Texas Instruments Incorporated - https://www.ti.com/ +# Copyright (C) 2022-2025 Texas Instruments Incorporated - https://www.ti.com/ # # Resource management configuration for AM62P # @@ -244,7 +244,7 @@ tifs-rm-cfg: subhdr: magic: 0x7B25 size: 8 - resasg_entries_size: 840 + resasg_entries_size: 904 reserved: 0 resasg_entries: - @@ -423,13 +423,13 @@ tifs-rm-cfg: reserved: 0 - start_resource: 44 - num_resource: 36 + num_resource: 35 type: 1802 host_id: 35 reserved: 0 - start_resource: 44 - num_resource: 36 + num_resource: 35 type: 1802 host_id: 36 reserved: 0 @@ -555,16 +555,28 @@ tifs-rm-cfg: reserved: 0 - start_resource: 19 - num_resource: 64 + num_resource: 32 type: 1937 host_id: 12 reserved: 0 - start_resource: 19 - num_resource: 64 + num_resource: 32 type: 1937 host_id: 36 reserved: 0 + - + start_resource: 51 + num_resource: 32 + type: 1937 + host_id: 12 + reserved: 0 + - + start_resource: 51 + num_resource: 32 + type: 1937 + host_id: 30 + reserved: 0 - start_resource: 83 num_resource: 8 @@ -609,16 +621,28 @@ tifs-rm-cfg: reserved: 0 - start_resource: 118 - num_resource: 16 + num_resource: 6 type: 1943 host_id: 12 reserved: 0 - start_resource: 118 - num_resource: 16 + num_resource: 6 type: 1943 host_id: 36 reserved: 0 + - + start_resource: 124 + num_resource: 10 + type: 1943 + host_id: 12 + reserved: 0 + - + start_resource: 124 + num_resource: 10 + type: 1943 + host_id: 30 + reserved: 0 - start_resource: 134 num_resource: 8 @@ -675,16 +699,28 @@ tifs-rm-cfg: reserved: 0 - start_resource: 19 - num_resource: 8 + num_resource: 4 type: 1956 host_id: 12 reserved: 0 - start_resource: 19 - num_resource: 8 + num_resource: 4 type: 1956 host_id: 36 reserved: 0 + - + start_resource: 23 + num_resource: 4 + type: 1956 + host_id: 12 + reserved: 0 + - + start_resource: 23 + num_resource: 4 + type: 1956 + host_id: 30 + reserved: 0 - start_resource: 27 num_resource: 1 @@ -771,16 +807,28 @@ tifs-rm-cfg: reserved: 0 - start_resource: 19 - num_resource: 16 + num_resource: 6 type: 1964 host_id: 12 reserved: 0 - start_resource: 19 - num_resource: 16 + num_resource: 6 type: 1964 host_id: 36 reserved: 0 + - + start_resource: 25 + num_resource: 10 + type: 1964 + host_id: 12 + reserved: 0 + - + start_resource: 25 + num_resource: 10 + type: 1964 + host_id: 30 + reserved: 0 - start_resource: 20 num_resource: 1 -- 2.43.0
