From a8fd5ca8016948a611bff62b0990ade9e1f8e83c Mon Sep 17 00:00:00 2001
From: Shengjiu Wang <shengjiu.wang@nxp.com>
Date: Mon, 10 Aug 2020 16:11:43 +0800
Subject: [PATCH] ASoC: fsl-asoc-card: Get "extal" clock rate by clk_get_rate
On some platform(.e.g. i.MX8QM MEK), the "extal" clock is different
with the mclk of codec, then the clock rate is also different.
So it is better to get clock rate of "extal" rate by clk_get_rate,
don't reuse the clock rate of mclk.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/1597047103-6863-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---
sound/soc/fsl/fsl-asoc-card.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index 52adedc03245b..32f8f756e6bbd 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -696,6 +696,17 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
goto asrc_fail;
}
} else if (of_node_name_eq(cpu_np, "esai")) {
+ struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal");
+
+ if (!IS_ERR(esai_clk)) {
+ priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk);
+ priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk);
+ clk_put(esai_clk);
+ } else if (PTR_ERR(esai_clk) == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto asrc_fail;
+ }
+
priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
} else if (of_node_name_eq(cpu_np, "sai")) {
--
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