diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-davinci/cpufreq.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/cpufreq.c b/arch/arm/mach-davinci/cpufreq.c index bc801427911..343de73161f 100644 --- a/arch/arm/mach-davinci/cpufreq.c +++ b/arch/arm/mach-davinci/cpufreq.c @@ -34,6 +34,8 @@ struct davinci_cpufreq { struct device *dev; struct clk *armclk; + struct clk *asyncclk; + unsigned long asyncrate; }; static struct davinci_cpufreq cpufreq; @@ -114,6 +116,12 @@ static int davinci_target(struct cpufreq_policy *policy, if (ret) goto out; + if (cpufreq.asyncclk) { + ret = clk_set_rate(cpufreq.asyncclk, cpufreq.asyncrate); + if (ret) + goto out; + } + /* if moving to lower freq, lower the voltage after lowering freq */ if (pdata->set_voltage && freqs.new < freqs.old) pdata->set_voltage(idx); @@ -191,6 +199,7 @@ static struct cpufreq_driver davinci_driver = { static int __init davinci_cpufreq_probe(struct platform_device *pdev) { struct davinci_cpufreq_config *pdata = pdev->dev.platform_data; + struct clk *asyncclk; if (!pdata) return -EINVAL; @@ -205,6 +214,12 @@ static int __init davinci_cpufreq_probe(struct platform_device *pdev) return PTR_ERR(cpufreq.armclk); } + asyncclk = clk_get(cpufreq.dev, "async"); + if (!IS_ERR(asyncclk)) { + cpufreq.asyncclk = asyncclk; + cpufreq.asyncrate = clk_get_rate(asyncclk); + } + return cpufreq_register_driver(&davinci_driver); } @@ -212,6 +227,9 @@ static int __exit davinci_cpufreq_remove(struct platform_device *pdev) { clk_put(cpufreq.armclk); + if (cpufreq.asyncclk) + clk_put(cpufreq.asyncclk); + return cpufreq_unregister_driver(&davinci_driver); } |