[1/2] usb: phy: load usb phy earlier

Message ID 1423036870-31392-2-git-send-email-zhangfei.gao@linaro.org
State Superseded
Headers show

Commit Message

zhangfei Feb. 4, 2015, 8:01 a.m.
Since phy is definitely used usb controller, load the phy
earlier rather than using defer probe to make boot time shorter.

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
---
 drivers/usb/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

zhangfei Feb. 4, 2015, 8:32 a.m. | #1
On 02/04/2015 04:16 PM, Peter Chen wrote:
> On Wed, Feb 4, 2015 at 4:01 PM, Zhangfei Gao <zhangfei.gao@linaro.org> wrote:
>> Since phy is definitely used usb controller, load the phy
>> earlier rather than using defer probe to make boot time shorter.
>>
>> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
>> ---
>>   drivers/usb/Makefile | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
>> index 2f1e2aa..d8926c6 100644
>> --- a/drivers/usb/Makefile
>> +++ b/drivers/usb/Makefile
>> @@ -5,6 +5,7 @@
>>   # Object files in subdirectories
>>
>>   obj-$(CONFIG_USB)              += core/
>> +obj-$(CONFIG_USB_SUPPORT)      += phy/
>>
>>   obj-$(CONFIG_USB_DWC3)         += dwc3/
>>   obj-$(CONFIG_USB_DWC2)         += dwc2/
>> @@ -48,7 +49,6 @@ obj-$(CONFIG_USB_MICROTEK)    += image/
>>   obj-$(CONFIG_USB_SERIAL)       += serial/
>>
>>   obj-$(CONFIG_USB)              += misc/
>> -obj-$(CONFIG_USB_SUPPORT)      += phy/
>>   obj-$(CONFIG_EARLY_PRINTK_DBGP)        += early/
>>
>>   obj-$(CONFIG_USB_ATM)          += atm/
>> --
>
> The similar patch posted before, you may use probe deferral in your controller
> driver if the PHY is not ready, besides, both controller and phy
> driver may be built
> as modules.

Yes, probe deferral is still used in the controller.
For example, dwc2 every time use defer probe to wait phy probe complete.

However since they are in the same folder, and we already know the 
sequence, is it better to change the sequence to make it quicker.

Thanks

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Patch

diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 2f1e2aa..d8926c6 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -5,6 +5,7 @@ 
 # Object files in subdirectories
 
 obj-$(CONFIG_USB)		+= core/
+obj-$(CONFIG_USB_SUPPORT)	+= phy/
 
 obj-$(CONFIG_USB_DWC3)		+= dwc3/
 obj-$(CONFIG_USB_DWC2)		+= dwc2/
@@ -48,7 +49,6 @@  obj-$(CONFIG_USB_MICROTEK)	+= image/
 obj-$(CONFIG_USB_SERIAL)	+= serial/
 
 obj-$(CONFIG_USB)		+= misc/
-obj-$(CONFIG_USB_SUPPORT)	+= phy/
 obj-$(CONFIG_EARLY_PRINTK_DBGP)	+= early/
 
 obj-$(CONFIG_USB_ATM)		+= atm/