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ASoC: rsnd: src: Add SRC reset support for RZ/G3E

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The RZ/G3E SoC exposes a shared SCU reset controller used by all SRC
modules. Acquire it once and pass it through per-instance's
rsnd_mod_init() so it is wired into the rsnd_mod->rstc plumbing.

devm_reset_control_get_optional_shared() returns NULL when no reset
is described in DT, leaving existing R-Car generations unaffected.

Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/20260525110230.4014435-17-john.madieu.xa@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Madieu 2026-05-25 11:02:28 +00:00 committed by Mark Brown
parent 799836bc37
commit 33a3500a34
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GPG Key ID: 24D68B725D5487D0
1 changed files with 12 additions and 1 deletions
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13
sound/soc/renesas/rcar/src.c
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@ -720,6 +720,7 @@ int rsnd_src_probe(struct rsnd_priv *priv)
{
struct device_node *node;
struct device *dev = rsnd_priv_to_dev(priv);
struct reset_control *rstc;
struct rsnd_src_ctrl *src_ctrl;
struct rsnd_src *src;
struct clk *clk;
@ -772,6 +773,16 @@ int rsnd_src_probe(struct rsnd_priv *priv)
goto rsnd_src_probe_done;
}
/*
* Shared SCU reset for every SRC module; acquire once.
* R-Car platforms typically don't have SRC reset controls.
*/
rstc = devm_reset_control_get_optional_shared(dev, "scu");
if (IS_ERR(rstc)) {
ret = PTR_ERR(rstc);
goto rsnd_src_probe_done;
}
i = 0;
for_each_child_of_node_scoped(node, np) {
if (!of_device_is_available(np))
@ -798,7 +809,7 @@ int rsnd_src_probe(struct rsnd_priv *priv)
}
ret = rsnd_mod_init(priv, rsnd_mod_get(src),
&rsnd_src_ops, clk, NULL, RSND_MOD_SRC, i);
&rsnd_src_ops, clk, rstc, RSND_MOD_SRC, i);
if (ret)
goto rsnd_src_probe_done;