[PATCH v2 09/24] ASoC: rsnd: Add audmacpp clock and reset support for RZ/G3E

John Madieu
2026-04-02T09:08:25Z

RZ/G3E requires additional audmapp clock and reset lines for
Audio DMA-PP operation.

Add global audmacpp clock/reset management in rsnd_dma_probe()
using optional APIs to remain transparent to other platforms.

Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
---

Changes:

v2: New patch

sound/soc/renesas/rcar/dma.c | 14 ++++++++++++++
sound/soc/renesas/rcar/rsnd.h | 7 +++++++
2 files changed, 21 insertions(+)

diff --git a/sound/soc/renesas/rcar/dma.c b/sound/soc/renesas/rcar/dma.c
index 68c859897e68..0afe4636b005 100644
--- a/sound/soc/renesas/rcar/dma.c
+++ b/sound/soc/renesas/rcar/dma.c
@@ -864,6 +864,20 @@ int rsnd_dma_probe(struct rsnd_priv *priv)
if (rsnd_is_gen4(priv))
goto audmapp_end;

+ /* for RZ/G3E */
+ priv->audmapp_rstc =
+ devm_reset_control_get_optional_exclusive_deasserted(dev, "audmapp");
+ if (IS_ERR(priv->audmapp_rstc)) {
+ return dev_err_probe(dev, PTR_ERR(priv->audmapp_rstc),
+ "failed to get audmapp reset\n");
+ }
+
+ priv->audmapp_clk = devm_clk_get_optional_enabled(dev, "audmapp");
+ if (IS_ERR(priv->audmapp_clk)) {
+ return dev_err_probe(dev, PTR_ERR(priv->audmapp_clk),
+ "failed to get audmapp clock\n");
+ }
+
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp");
if (!res) {
dev_err(dev, "lack of audmapp in DT\n");
diff --git a/sound/soc/renesas/rcar/rsnd.h b/sound/soc/renesas/rcar/rsnd.h
index 7c5eb575209c..4ff410a96336 100644
--- a/sound/soc/renesas/rcar/rsnd.h
+++ b/sound/soc/renesas/rcar/rsnd.h
@@ -623,6 +623,13 @@ void rsnd_adg_clk_dbg_info(struct rsnd_priv *priv, struct seq_file *m);
struct rsnd_priv {

struct platform_device *pdev;
+
+ /*
+ * below value will be filled on rsnd_dma_probe()
+ */
+ struct clk *audmapp_clk;
+ struct reset_control *audmapp_rstc;
+
spinlock_t lock;
unsigned long flags;
#define RSND_GEN_MASK (0xF << 0)
--
2.25.1