Re: [PATCH v4 1/2] i2c: davinci: Add PM Runtime Support

From: Sekhar Nori
Date: Tue Sep 12 2017 - 04:48:52 EST


On Tuesday 12 September 2017 07:28 AM, Baolin Wang wrote:
>> @@ -802,13 +821,24 @@ static int davinci_i2c_probe(struct platform_device *pdev)
>> dev->clk = devm_clk_get(&pdev->dev, NULL);
>> if (IS_ERR(dev->clk))
>> return PTR_ERR(dev->clk);
>> - clk_prepare_enable(dev->clk);

> You removed clk enable here, I think it can not work if we did not
> open CONFIG_PM macro. I think you should keep clk enable here, and set

What do you mean by "open CONFIG_PM macro" ?

> rpm active by pm_runtime_set_active() before issuing
> pm_runtime_enable().

Can you explain why you want to do this instead of relying on
pm_runtime_get_sync() to enable clock?

Thanks,
Sekhar