On 01/20/2017 10:24 AM, Sekhar Nori wrote:
> On Thursday 19 January 2017 11:01 PM, Alexandre Bailon wrote:
>> On 01/19/2017 05:49 PM, Grygorii Strashko wrote:
>>> On 01/19/2017 09:08 AM, Alexandre Bailon wrote:
>>>> On 01/19/2017 03:48 PM, Sekhar Nori wrote:
>>>>> On Thursday 19 January 2017 07:39 PM, Alexandre Bailon wrote:
>>>>>> Add usb20 to the list of clock supported by PM runtime.
>>>>>>
>>>>>> Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx>
>>>>>> ---
>>>>>> arch/arm/mach-davinci/pm_domain.c | 2 +-
>>>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>>
>>>>>> diff --git a/arch/arm/mach-davinci/pm_domain.c b/arch/arm/mach-davinci/pm_domain.c
>>>>>> index 78eac2c..66471f2 100644
>>>>>> --- a/arch/arm/mach-davinci/pm_domain.c
>>>>>> +++ b/arch/arm/mach-davinci/pm_domain.c
>>>>>> @@ -23,7 +23,7 @@ static struct dev_pm_domain davinci_pm_domain = {
>>>>>>
>>>>>> static struct pm_clk_notifier_block platform_bus_notifier = {
>>>>>> .pm_domain = &davinci_pm_domain,
>>>>>> - .con_ids = { "fck", "master", "slave", NULL },
>>>>>> + .con_ids = { "fck", "master", "slave", "usb20", NULL },
>>>>>
>>>>> Instead of doing this, can we drop the con_id from musb clock? Looking
>>>>> at the USB clocking diagram in the TRM. There is a single clock input to
>>>>> the USB 2.0 subsystem. There is no real need for a con_id at all.
>>>> Currently, the con_id is required to get the usb20 clock from usb-da8xx.c
>>>> I will try to figure out which changes are required remove con_id.
>>>
>>> It most probably should be renamed to "fck" then it should work with your
>>> patch "[PATCH v3 5/5] usb: musb: da8xx: Add a primary support of PM runtime".
>
>> Actually, because of the USB phy, more changes are required.
>> Something like that works for me.
>
> There are too many things going on in your patch and I am not clear why
> all of those changes are needed. The following diff worked for me on top
> of master branch of my tree. Can you check if this works for you? If not,
> I need some more explanation of why you are making all the changes that
> you are.
Your patch works.
I guess I have forgotten something when I have tried to do it by myself
because the phy was not working.
Thanks,
Alexandre
>
> Thanks,
> Sekhar
>
> ---8<---
> diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
> index 073c458d0c67..2cfd9d70a818 100644
> --- a/arch/arm/mach-davinci/da830.c
> +++ b/arch/arm/mach-davinci/da830.c
> @@ -412,7 +412,7 @@ static struct clk_lookup da830_clks[] = {
> CLK("davinci-mcasp.0", NULL, &mcasp0_clk),
> CLK("davinci-mcasp.1", NULL, &mcasp1_clk),
> CLK("davinci-mcasp.2", NULL, &mcasp2_clk),
> - CLK("musb-da8xx", "usb20", &usb20_clk),
> + CLK("musb-da8xx", NULL, &usb20_clk),
> CLK(NULL, "aemif", &aemif_clk),
> CLK(NULL, "aintc", &aintc_clk),
> CLK(NULL, "secu_mgr", &secu_mgr_clk),
> diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
> index 55f6e1172517..946cd06d8c05 100644
> --- a/arch/arm/mach-davinci/da850.c
> +++ b/arch/arm/mach-davinci/da850.c
> @@ -567,7 +567,7 @@ static struct clk_lookup da850_clks[] = {
> */
> CLK(NULL, "aemif", &aemif_nand_clk),
> CLK("ohci-da8xx", "usb11", &usb11_clk),
> - CLK("musb-da8xx", "usb20", &usb20_clk),
> + CLK("musb-da8xx", NULL, &usb20_clk),
> CLK("spi_davinci.0", NULL, &spi0_clk),
> CLK("spi_davinci.1", NULL, &spi1_clk),
> CLK("vpif", NULL, &vpif_clk),
> diff --git a/arch/arm/mach-davinci/usb-da8xx.c b/arch/arm/mach-davinci/usb-da8xx.c
> index 9a6af0bd5dc3..9b667689b665 100644
> --- a/arch/arm/mach-davinci/usb-da8xx.c
> +++ b/arch/arm/mach-davinci/usb-da8xx.c
> @@ -275,7 +275,7 @@ int __init da8xx_register_usb20_phy_clk(bool use_usb_refclkin)
> struct clk *parent;
> int ret;
>
> - usb20_clk = clk_get(&da8xx_usb20_dev.dev, "usb20");
> + usb20_clk = clk_get(&da8xx_usb20_dev.dev, NULL);
> ret = PTR_ERR_OR_ZERO(usb20_clk);
> if (ret)
> return ret;
> diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
> index e89708d839e5..8f6f0efd978e 100644
> --- a/drivers/usb/musb/da8xx.c
> +++ b/drivers/usb/musb/da8xx.c
> @@ -502,7 +502,7 @@ static int da8xx_probe(struct platform_device *pdev)
> if (!glue)
> return -ENOMEM;
>
> - clk = devm_clk_get(&pdev->dev, "usb20");
> + clk = devm_clk_get(&pdev->dev, NULL);
> if (IS_ERR(clk)) {
> dev_err(&pdev->dev, "failed to get clock\n");
> return PTR_ERR(clk);
>
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