[PATCH 2/5] accel/rocket: Enable ping-pong mode only for multi-task jobs
From: Ross Cawston
Date: Tue Feb 17 2026 - 16:51:03 EST
Ping-pong mode (PC_TASK_CON_TASK_PP_EN) is required for chaining multiple
tasks in a job, but is unnecessary overhead for single-task jobs.
Set it conditionally based on job->task_count to avoid pointless buffer
management cycles and slightly reduce per-job latency/power on simple
workloads.
No functional change or risk of corruption for existing jobs - backward
compatible.
Signed-off-by: Ross Cawston <ross@xxxxxxx>
---
drivers/accel/rocket/rocket_job.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/accel/rocket/rocket_job.c b/drivers/accel/rocket/rocket_job.c
index acd606160dc9..369b60805d5f 100644
--- a/drivers/accel/rocket/rocket_job.c
+++ b/drivers/accel/rocket/rocket_job.c
@@ -143,7 +143,7 @@ static void rocket_job_hw_submit(struct rocket_core *core, struct rocket_job *jo
rocket_pc_writel(core, TASK_CON, PC_TASK_CON_RESERVED_0(1) |
PC_TASK_CON_TASK_COUNT_CLEAR(1) |
PC_TASK_CON_TASK_NUMBER(1) |
- PC_TASK_CON_TASK_PP_EN(1));
+ PC_TASK_CON_TASK_PP_EN(job->task_count > 1 ? 1 : 0));
rocket_pc_writel(core, TASK_DMA_BASE_ADDR, PC_TASK_DMA_BASE_ADDR_DMA_BASE_ADDR(0x0));
--
2.52.0