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ASoC: rsnd: ssiu: Add shared SSI reset controller support

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The RZ/G3E SoC exposes a single shared "ssi-all" reset that gates all
SSI/SSIU modules. Acquire it at SSIU probe and pass it through
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/20260525110230.4014435-10-john.madieu.xa@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Madieu 2026-05-25 11:02:21 +00:00 committed by Mark Brown
parent 1cd10dab67
commit b4ef837a28
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1 changed files with 8 additions and 1 deletions
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9
sound/soc/renesas/rcar/ssiu.c
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@ -510,6 +510,7 @@ int rsnd_ssiu_probe(struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct device_node *node __free(device_node) = rsnd_ssiu_of_node(priv);
struct reset_control *rstc;
struct rsnd_ssiu *ssiu;
struct rsnd_mod_ops *ops;
const int *list = NULL;
@ -564,6 +565,12 @@ int rsnd_ssiu_probe(struct rsnd_priv *priv)
}
}
/* Acquire shared reset once for all SSIU modules */
rstc = devm_reset_control_get_optional_shared(dev, "ssi-all");
if (IS_ERR(rstc))
return dev_err_probe(dev, PTR_ERR(rstc),
"failed to get ssi-all reset\n");
for_each_rsnd_ssiu(ssiu, priv, i) {
int ret;
@ -586,7 +593,7 @@ int rsnd_ssiu_probe(struct rsnd_priv *priv)
}
ret = rsnd_mod_init(priv, rsnd_mod_get(ssiu),
ops, NULL, NULL, RSND_MOD_SSIU, i);
ops, NULL, rstc, RSND_MOD_SSIU, i);
if (ret)
return ret;
}