[alsa-devel] [PATCH] ASoC: cht-bsw-rt5645: Also enable/disable the clock on Cherry Trail

[Hans de Goede]

Just like on Bay Trail the codec mclk is also controlled by the common
clk framework as pmc_plt_clk_3 on Cherry Trail and the cht-bsw-rt5645
needs to control it so that it has the right frequency and gets
en/disabled as appropriate.

This fixes the sound crackling (like a bonfire) when the clock was not
set up properly before Linux boots and turns the clock off when not in
use saving power.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=196351
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 sound/soc/intel/boards/cht_bsw_rt5645.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c
index 5bcde01d15e6..d553e2b67c92 100644
--- a/sound/soc/intel/boards/cht_bsw_rt5645.c
+++ b/sound/soc/intel/boards/cht_bsw_rt5645.c
@@ -682,14 +682,12 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
 			cht_rt5645_cpu_dai_name;
 	}
 
-	if (is_valleyview()) {
-		drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
-		if (IS_ERR(drv->mclk)) {
-			dev_err(&pdev->dev,
-				"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
-				PTR_ERR(drv->mclk));
-			return PTR_ERR(drv->mclk);
-		}
+	drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
+	if (IS_ERR(drv->mclk)) {
+		dev_err(&pdev->dev,
+			"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
+			PTR_ERR(drv->mclk));
+		return PTR_ERR(drv->mclk);
 	}
 
 	snd_soc_card_set_drvdata(card, drv);
-- 
2.14.2