evie/android_kernel_oneplus_msm8998
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coresight: set appropriate clock rate for coresight devices

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For certain coresight devices probed via amba framework the clock
rate is not being set during probe time. The patch sets the rate
to an appropriate value instead of relying on default behavior.

Change-Id: I15607dcb06564a603910709fafb9eba563bf102c
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>
This commit is contained in:
Satyajit Desai 2016-10-07 18:06:50 -07:00
parent 9e2d528dc4
commit e96c109b73
3 changed files with 11 additions and 0 deletions
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4
drivers/hwtracing/coresight/coresight-etm4x.c
View file

@ -2801,6 +2801,10 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
put_online_cpus();
ret = clk_set_rate(adev->pclk, CORESIGHT_CLK_RATE_TRACE);
if (ret)
return ret;
pm_runtime_put(&adev->dev);
mutex_lock(&drvdata->mutex);

4
drivers/hwtracing/coresight/coresight-tmc.c
View file

@ -1890,6 +1890,10 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id)
drvdata->size = readl_relaxed(drvdata->base + TMC_RSZ) * 4;
}
ret = clk_set_rate(adev->pclk, CORESIGHT_CLK_RATE_TRACE);
if (ret)
return ret;
pm_runtime_put(&adev->dev);
if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) {

3
drivers/hwtracing/coresight/coresight-tpiu.c
View file

@ -162,6 +162,9 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id)
/* Disable tpiu to support older devices */
tpiu_disable_hw(drvdata);
ret = clk_set_rate(adev->pclk, CORESIGHT_CLK_RATE_TRACE);
if (ret)
return ret;
pm_runtime_put(&adev->dev);