fsl_chan_set_dst_loop_size(9)

💅 fsl_chan_set_dst_loop_size

Okay bestie, welcome to the Kernel API Manual page for fsl_chan_set_dst_loop_size(9) — yes that name is a whole mouthful, and yes we're gonna get through it together. 🫶

✨ NAME ✨

fsl_chan_set_dst_loop_size — set the destination address hold transfer size

🌸 SYNOPSIS 🌸

void fsl_chan_set_dst_loop_size (struct fsldma_chan *chan , int size );

🎀 ARGUMENTS 🎀

• chan — a Freescale DMA channel. That's the little guy you're configuring 💖
• size — the address loop size. Pass 0 to disable the loop entirely, no cap.

🦋 DESCRIPTION 🦋

So this one sets the destination address hold transfer size — the destination address hold, aka the loop transfer size. Lowkey obsessed with how simple the concept is once you see it.

Here's the vibe: when the DMA transfers data to the destination address (TA), and the loop size is 4, the DMA will write data to TA, TA + 1, TA + 2, TA + 3 — and then loop right back around to TA, TA + 1 … and so on, forever and ever, main character energy. 🔁✨

👑 SEE ALSO 👑

Kernel file ./drivers/dma/fsldma.c, plus these iconic siblings:

• fsl_chan_set_src_loop_size(9)
• fsl_chan_set_request_count(9)
• fsl_chan_toggle_ext_pause(9)
• fsl_chan_toggle_ext_start(9)
• fsl_dma_free_descriptor(9)
• fsl_dma_alloc_descriptor(9)
• fsldma_clean_completed_descriptor(9)
• fsldma_run_tx_complete_actions(9)
• fsldma_clean_running_descriptor(9)
• fsl_chan_xfer_ld_queue(9)
• fsldma_cleanup_descriptors(9)
• fsl_dma_alloc_chan_resources(9)
• fsldma_free_desc_list(9)
• fsl_dma_free_chan_resources(9)
• fsl_dma_memcpy_issue_pending(9)
• fsl_tx_status(9)

That's the whole page, bestie — nothing skipped, nothing spilled. 🍓

Sign-off time: this cutie lives in ./drivers/dma, dated October 2026, and it's filed under fsl_chan_set_dst_loop_size(9). Slay, go configure your DMA loop sizes responsibly. 💅💜