The CPSW3G instance of CPSW on J722S 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 J722S SoC to the following: --------------- -------------- ------------- ---------------- Resource MAIN_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 <[email protected]> --- board/ti/j722s/rm-cfg.yaml | 124 ++++++++++++++++++++------------ board/ti/j722s/tifs-rm-cfg.yaml | 104 ++++++++++++++++++--------- 2 files changed, 147 insertions(+), 81 deletions(-) diff --git a/board/ti/j722s/rm-cfg.yaml b/board/ti/j722s/rm-cfg.yaml index 62730adf216..7fe21892055 100644 --- a/board/ti/j722s/rm-cfg.yaml +++ b/board/ti/j722s/rm-cfg.yaml @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0+ -# Copyright (C) 2022-2025 Texas Instruments Incorporated - https://www.ti.com/ +# Copyright (C) 2022-2026 Texas Instruments Incorporated - https://www.ti.com/ # # Resource management configuration for J722S # @@ -244,7 +244,7 @@ rm-cfg: subhdr: magic: 0x7B25 size: 8 - resasg_entries_size: 1184 + resasg_entries_size: 1192 reserved: 0 resasg_entries: - @@ -717,15 +717,27 @@ 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 + host_id: 38 + 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 @@ -771,15 +783,27 @@ 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 + host_id: 38 + 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 @@ -837,15 +861,27 @@ 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 + host_id: 38 + 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 @@ -929,19 +965,31 @@ rm-cfg: start_resource: 19 num_resource: 1 type: 1963 - host_id: 36 + host_id: 38 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 + host_id: 38 + 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 @@ -1017,13 +1065,13 @@ rm-cfg: reserved: 0 - start_resource: 8 - num_resource: 32 + num_resource: 12 type: 12750 host_id: 12 reserved: 0 - - start_resource: 8 - num_resource: 32 + start_resource: 20 + num_resource: 20 type: 12750 host_id: 38 reserved: 0 @@ -1035,13 +1083,13 @@ rm-cfg: reserved: 0 - start_resource: 0 - num_resource: 32 + num_resource: 12 type: 12769 host_id: 12 reserved: 0 - - start_resource: 0 - num_resource: 32 + start_resource: 12 + num_resource: 20 type: 12769 host_id: 38 reserved: 0 @@ -1053,22 +1101,10 @@ rm-cfg: reserved: 0 - start_resource: 0 - num_resource: 2 + num_resource: 8 type: 12810 host_id: 12 reserved: 0 - - - start_resource: 2 - num_resource: 2 - type: 12810 - host_id: 20 - reserved: 0 - - - start_resource: 4 - num_resource: 2 - type: 12810 - host_id: 22 - reserved: 0 - start_resource: 22 num_resource: 18 @@ -1077,27 +1113,21 @@ rm-cfg: reserved: 0 - start_resource: 12288 - num_resource: 56 + num_resource: 64 type: 12813 host_id: 12 reserved: 0 - - start_resource: 12344 - num_resource: 48 - type: 12813 - host_id: 20 - reserved: 0 - - - start_resource: 12392 - num_resource: 48 + start_resource: 12352 + num_resource: 64 type: 12813 - host_id: 22 + host_id: 38 reserved: 0 - - start_resource: 12440 - num_resource: 64 + start_resource: 12416 + num_resource: 88 type: 12813 - host_id: 38 + host_id: 128 reserved: 0 - start_resource: 1536 diff --git a/board/ti/j722s/tifs-rm-cfg.yaml b/board/ti/j722s/tifs-rm-cfg.yaml index 7b2e58a89b3..a6b7a089e36 100644 --- a/board/ti/j722s/tifs-rm-cfg.yaml +++ b/board/ti/j722s/tifs-rm-cfg.yaml @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0+ -# Copyright (C) 2022-2025 Texas Instruments Incorporated - https://www.ti.com/ +# Copyright (C) 2022-2026 Texas Instruments Incorporated - https://www.ti.com/ # # Resource management configuration for J722S # @@ -244,7 +244,7 @@ tifs-rm-cfg: subhdr: magic: 0x7B25 size: 8 - resasg_entries_size: 992 + resasg_entries_size: 1000 reserved: 0 resasg_entries: - @@ -609,15 +609,27 @@ 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 + host_id: 38 + 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 @@ -663,15 +675,27 @@ 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 + host_id: 38 + 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 @@ -729,15 +753,27 @@ 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 + host_id: 38 + 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 @@ -821,19 +857,31 @@ tifs-rm-cfg: start_resource: 19 num_resource: 1 type: 1963 - host_id: 36 + host_id: 38 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 + host_id: 38 + 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 @@ -897,13 +945,13 @@ tifs-rm-cfg: reserved: 0 - start_resource: 8 - num_resource: 32 + num_resource: 12 type: 12750 host_id: 12 reserved: 0 - - start_resource: 8 - num_resource: 32 + start_resource: 20 + num_resource: 20 type: 12750 host_id: 38 reserved: 0 @@ -915,13 +963,13 @@ tifs-rm-cfg: reserved: 0 - start_resource: 0 - num_resource: 32 + num_resource: 12 type: 12769 host_id: 12 reserved: 0 - - start_resource: 0 - num_resource: 32 + start_resource: 12 + num_resource: 20 type: 12769 host_id: 38 reserved: 0 @@ -933,22 +981,10 @@ tifs-rm-cfg: reserved: 0 - start_resource: 0 - num_resource: 2 + num_resource: 8 type: 12810 host_id: 12 reserved: 0 - - - start_resource: 2 - num_resource: 2 - type: 12810 - host_id: 20 - reserved: 0 - - - start_resource: 4 - num_resource: 2 - type: 12810 - host_id: 22 - reserved: 0 - start_resource: 22 num_resource: 18 -- 2.51.1
