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ASoC: samsung: i2s: Prevent external abort on exynos5433 I2S1 access

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It seems both PCLK_I2S1 and SCLK_I2S1 clocks need to be enabled before
I2S1 control registers can be accessed on exynos5433. If SCLK clock
is disabled an exception is triggered. To fix this parent clock of
the RCLK_SRC clock is assigned to pri_dai->op_clk so required gate
clock is handled by the runtime PM ops.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sylwester Nawrocki 2018-02-12 17:15:34 +01:00 committed by Mark Brown
parent aa274c5cfd
commit 48279c53fd
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GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 2 deletions
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9
sound/soc/samsung/i2s.c
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@ -1404,9 +1404,14 @@ static int samsung_i2s_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev); pm_runtime_enable(&pdev->dev);
ret = i2s_register_clock_provider(pdev); ret = i2s_register_clock_provider(pdev);
if (!ret) if (ret < 0)
return 0; goto err_disable_pm;
pri_dai->op_clk = clk_get_parent(pri_dai->clk_table[CLK_I2S_RCLK_SRC]);
return 0;
err_disable_pm:
pm_runtime_disable(&pdev->dev); pm_runtime_disable(&pdev->dev);
err_disable_clk: err_disable_clk:
clk_disable_unprepare(pri_dai->clk); clk_disable_unprepare(pri_dai->clk);