ASoC: rockchip-i2s: enable "hclk" for rockchip I2S controller

As "hclk" is used for rockchip I2S controller, driver must to enable
it in probe.

Tested on RK3288 with max98090.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 8d8e4b59049f..dd423c611d96 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -419,6 +419,11 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
                 dev_err(&pdev->dev, "Can't retrieve i2s bus clock\n");
                 return PTR_ERR(i2s->hclk);
         }
+        ret = clk_prepare_enable(i2s->hclk);
+        if (ret) {
+                dev_err(i2s->dev, "hclock enable failed %d\n", ret);
+                return ret;
+        }
 
         i2s->mclk = devm_clk_get(&pdev->dev, "i2s_clk");
         if (IS_ERR(i2s->mclk)) {