[PATCH 4/4] dmaengine: sh: rcar-dmac: Add support for R-Car Gen5 SoCs

[Wolfram Sang <wsa+renesas@sang-engineering.com>]

Gen5 is very similar to Gen4. Of interest here is that it has a SMMU
instead of an IPMMU, so we don't need to set the flag for a workaround.
Make the module description more generic while here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/dma/sh/rcar-dmac.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 9c5210257097..06f691f5f3fb 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -2012,6 +2012,11 @@ static const struct rcar_dmac_of_data rcar_gen4_dmac_data = {
 	.has_ipmmu = 1,
 };
 
+static const struct rcar_dmac_of_data rcar_gen5_dmac_data = {
+	.chan_offset_base = 0x0,
+	.chan_offset_stride = 0x1000,
+};
+
 static const struct of_device_id rcar_dmac_of_ids[] = {
 	{
 		.compatible = "renesas,rcar-dmac",
@@ -2019,6 +2024,9 @@ static const struct of_device_id rcar_dmac_of_ids[] = {
 	}, {
 		.compatible = "renesas,rcar-gen4-dmac",
 		.data = &rcar_gen4_dmac_data,
+	}, {
+		.compatible = "renesas,rcar-gen5-dmac",
+		.data = &rcar_gen5_dmac_data,
 	}, {
 		/*
 		 * Backward compatibility for between v5.12 - v5.19
@@ -2044,6 +2052,6 @@ static struct platform_driver rcar_dmac_driver = {
 
 module_platform_driver(rcar_dmac_driver);
 
-MODULE_DESCRIPTION("R-Car Gen2 DMA Controller Driver");
+MODULE_DESCRIPTION("R-Car DMA Controller Driver");
 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 MODULE_LICENSE("GPL v2");
-- 
2.47.3