diff options
Diffstat (limited to 'sound/soc/tegra/tegra_asoc_utils.c')
| -rw-r--r-- | sound/soc/tegra/tegra_asoc_utils.c | 68 |
1 files changed, 40 insertions, 28 deletions
diff --git a/sound/soc/tegra/tegra_asoc_utils.c b/sound/soc/tegra/tegra_asoc_utils.c index 0d2271952555..25903ed850c8 100644 --- a/sound/soc/tegra/tegra_asoc_utils.c +++ b/sound/soc/tegra/tegra_asoc_utils.c @@ -60,8 +60,6 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate, data->set_mclk = 0; clk_disable_unprepare(data->clk_cdev1); - clk_disable_unprepare(data->clk_pll_a_out0); - clk_disable_unprepare(data->clk_pll_a); err = clk_set_rate(data->clk_pll_a, new_baseclock); if (err) { @@ -77,18 +75,6 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate, /* Don't set cdev1/extern1 rate; it's locked to pll_a_out0 */ - err = clk_prepare_enable(data->clk_pll_a); - if (err) { - dev_err(data->dev, "Can't enable pll_a: %d\n", err); - return err; - } - - err = clk_prepare_enable(data->clk_pll_a_out0); - if (err) { - dev_err(data->dev, "Can't enable pll_a_out0: %d\n", err); - return err; - } - err = clk_prepare_enable(data->clk_cdev1); if (err) { dev_err(data->dev, "Can't enable cdev1: %d\n", err); @@ -109,8 +95,6 @@ int tegra_asoc_utils_set_ac97_rate(struct tegra_asoc_utils_data *data) int err; clk_disable_unprepare(data->clk_cdev1); - clk_disable_unprepare(data->clk_pll_a_out0); - clk_disable_unprepare(data->clk_pll_a); /* * AC97 rate is fixed at 24.576MHz and is used for both the host @@ -130,18 +114,6 @@ int tegra_asoc_utils_set_ac97_rate(struct tegra_asoc_utils_data *data) /* Don't set cdev1/extern1 rate; it's locked to pll_a_out0 */ - err = clk_prepare_enable(data->clk_pll_a); - if (err) { - dev_err(data->dev, "Can't enable pll_a: %d\n", err); - return err; - } - - err = clk_prepare_enable(data->clk_pll_a_out0); - if (err) { - dev_err(data->dev, "Can't enable pll_a_out0: %d\n", err); - return err; - } - err = clk_prepare_enable(data->clk_cdev1); if (err) { dev_err(data->dev, "Can't enable cdev1: %d\n", err); @@ -158,6 +130,7 @@ EXPORT_SYMBOL_GPL(tegra_asoc_utils_set_ac97_rate); int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data, struct device *dev) { + struct clk *clk_out_1, *clk_extern1; int ret; data->dev = dev; @@ -193,6 +166,45 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data, return PTR_ERR(data->clk_cdev1); } + /* + * If clock parents are not set in DT, configure here to use clk_out_1 + * as mclk and extern1 as parent for Tegra30 and higher. + */ + if (!of_find_property(dev->of_node, "assigned-clock-parents", NULL) && + data->soc > TEGRA_ASOC_UTILS_SOC_TEGRA20) { + dev_warn(data->dev, + "Configuring clocks for a legacy device-tree\n"); + dev_warn(data->dev, + "Please update DT to use assigned-clock-parents\n"); + clk_extern1 = devm_clk_get(dev, "extern1"); + if (IS_ERR(clk_extern1)) { + dev_err(data->dev, "Can't retrieve clk extern1\n"); + return PTR_ERR(clk_extern1); + } + + ret = clk_set_parent(clk_extern1, data->clk_pll_a_out0); + if (ret < 0) { + dev_err(data->dev, + "Set parent failed for clk extern1\n"); + return ret; + } + + clk_out_1 = devm_clk_get(dev, "pmc_clk_out_1"); + if (IS_ERR(clk_out_1)) { + dev_err(data->dev, "Can't retrieve pmc_clk_out_1\n"); + return PTR_ERR(clk_out_1); + } + + ret = clk_set_parent(clk_out_1, clk_extern1); + if (ret < 0) { + dev_err(data->dev, + "Set parent failed for pmc_clk_out_1\n"); + return ret; + } + + data->clk_cdev1 = clk_out_1; + } + ret = tegra_asoc_utils_set_rate(data, 44100, 256 * 44100); if (ret) return ret; |