diff mbox series

dmaengine: sh: rcar-dmac: add comment for r8a779a0 compatible

Message ID 87a5dlwlr0.wl-kuninori.morimoto.gx@renesas.com (mailing list archive)
State New
Delegated to: Geert Uytterhoeven
Headers show
Series dmaengine: sh: rcar-dmac: add comment for r8a779a0 compatible | expand

Commit Message

Kuninori Morimoto Nov. 27, 2024, 12:42 a.m. UTC 
Add the reason why we need r8a779a0 compatible.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
Hmm... It seems I didn't send this patch yesterday... (?)

 drivers/dma/sh/rcar-dmac.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 1094a2f821649..c712e66641696 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -2023,6 +2023,10 @@  static const struct of_device_id rcar_dmac_of_ids[] = {
 		.compatible = "renesas,rcar-gen4-dmac",
 		.data = &rcar_gen4_dmac_data,
 	}, {
+		/*
+		 * Backward compatibility for between v5.12 - v5.19
+		 * which didn't combined with "renesas,rcar-gen4-dmac"
+		 */
 		.compatible = "renesas,dmac-r8a779a0",
 		.data = &rcar_gen4_dmac_data,
 	},