[PATCH v4 0/2] Fix 'no USB device found' error.

[PATCH v4 0/2] Fix 'no USB device found' error.

[Julien Panis]

This series fixes the "No USB device found" error
for am335x-icev2 and am335x-evmsk. USB0 dual-role
feature is now handled as peripheral only in the
driver.

The error was not produced for am335x-evm because
usb0 dr_mode was configured as peripheral in
'am335x-evm-u-boot.dtsi'. This fragment is no
longer needed.

Signed-off-by: Julien Panis <jpanis@baylibre.com>
---
Changes in v4:
- Handle usb dual-role feature as peripheral in ti-musb driver.
- Link to v3: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v3-1-40493e1d7c0b@baylibre.com

Changes in v3:
- Remove usb0 dr_mode configuration from 'am335x-evm-u-boot.dtsi'.
- Link to v2: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v2-0-ff121f0e8d7a@baylibre.com

Changes in v2:
- Drop the modification made in arch/arm/mach-omap2/am33xx/board.c
- Configure usb0 dr_mode as peripheral in 'am335x-icev2-u-boot.dtsi'
  and 'am335x-evmsk-u-boot.dtsi' device trees.
- Link to v1: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v1-1-2156923994a9@baylibre.com

---
Julien Panis (2):
      musb-new: ti-musb: Handle usb dual-role feature as peripheral
      arm: dts: am335x-evm-u-boot: Remove usb0 mode configuration

 arch/arm/dts/am335x-evm-u-boot.dtsi | 4 ----
 drivers/usb/musb-new/ti-musb.c      | 1 +
 2 files changed, 1 insertion(+), 4 deletions(-)
---
base-commit: 19b77d3d23966a0d6dbb3c86187765f11100fb6f
change-id: 20230621-fix_usb_ether_init-4bf4f1135113

Best regards,
-- 
Julien Panis <jpanis@baylibre.com>

[PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Julien Panis]

This prevents from getting some 'No USB device found' error,
in usb_ether_init() function for instance.

Signed-off-by: Julien Panis <jpanis@baylibre.com>
---
 drivers/usb/musb-new/ti-musb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
index 3be3f93dd85d..44697dc31387 100644
--- a/drivers/usb/musb-new/ti-musb.c
+++ b/drivers/usb/musb-new/ti-musb.c
@@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
 		dr_mode = usb_get_dr_mode(node);
 		switch (dr_mode) {
 		case USB_DR_MODE_PERIPHERAL:
+		case USB_DR_MODE_OTG:
 			/* Bind MUSB device */
 			ret = device_bind_driver_to_node(parent,
 							 "ti-musb-peripheral",

-- 
2.37.3

[PATCH v4 2/2] arm: dts: am335x-evm-u-boot: Remove usb0 mode configuration

[Julien Panis]

USB0 dual-role feature is now handled as peripheral only
in ti-musb driver.

Signed-off-by: Julien Panis <jpanis@baylibre.com>
---
 arch/arm/dts/am335x-evm-u-boot.dtsi | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm/dts/am335x-evm-u-boot.dtsi b/arch/arm/dts/am335x-evm-u-boot.dtsi
index 82a483ae3e28..42eeca8c0499 100644
--- a/arch/arm/dts/am335x-evm-u-boot.dtsi
+++ b/arch/arm/dts/am335x-evm-u-boot.dtsi
@@ -23,10 +23,6 @@
 	status = "disabled";
 };
 
-&usb0 {
-	dr_mode = "peripheral";
-};
-
 &i2c0 {
 	bootph-all;
 };

-- 
2.37.3

Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Tony Lindgren]

* Julien Panis <jpanis@baylibre.com> [230706 10:41]:
> This prevents from getting some 'No USB device found' error,
> in usb_ether_init() function for instance.

Looks good to me:

Reviewed-by: Tony Lindgren <tony@atomide.com>

Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Nishanth Menon]

On 12:40-20230706, Julien Panis wrote:
> This prevents from getting some 'No USB device found' error,
> in usb_ether_init() function for instance.
> 
> Signed-off-by: Julien Panis <jpanis@baylibre.com>
> ---
>  drivers/usb/musb-new/ti-musb.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
> index 3be3f93dd85d..44697dc31387 100644
> --- a/drivers/usb/musb-new/ti-musb.c
> +++ b/drivers/usb/musb-new/ti-musb.c
> @@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
>  		dr_mode = usb_get_dr_mode(node);
>  		switch (dr_mode) {
>  		case USB_DR_MODE_PERIPHERAL:
> +		case USB_DR_MODE_OTG:
>  			/* Bind MUSB device */
>  			ret = device_bind_driver_to_node(parent,
>  							 "ti-musb-peripheral",
> 
> -- 
> 2.37.3
> 

Reviewed-by: Nishanth Menon <nm@ti.com>
-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D

Re: [PATCH v4 2/2] arm: dts: am335x-evm-u-boot: Remove usb0 mode configuration

[Nishanth Menon]

On 12:40-20230706, Julien Panis wrote:
> USB0 dual-role feature is now handled as peripheral only
> in ti-musb driver.
> 
> Signed-off-by: Julien Panis <jpanis@baylibre.com>
> ---
>  arch/arm/dts/am335x-evm-u-boot.dtsi | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/arch/arm/dts/am335x-evm-u-boot.dtsi b/arch/arm/dts/am335x-evm-u-boot.dtsi
> index 82a483ae3e28..42eeca8c0499 100644
> --- a/arch/arm/dts/am335x-evm-u-boot.dtsi
> +++ b/arch/arm/dts/am335x-evm-u-boot.dtsi
> @@ -23,10 +23,6 @@
>  	status = "disabled";
>  };
>  
> -&usb0 {
> -	dr_mode = "peripheral";
> -};
> -
>  &i2c0 {
>  	bootph-all;
>  };
> 
> -- 
> 2.37.3
> 
Reviewed-by: Nishanth Menon <nm@ti.com>

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D

Re: [PATCH v4 0/2] Fix 'no USB device found' error.

[Roger Quadros]

Hi Julien,

On 06/07/2023 13:40, Julien Panis wrote:
> This series fixes the "No USB device found" error
> for am335x-icev2 and am335x-evmsk. USB0 dual-role
> feature is now handled as peripheral only in the
> driver.
> 
> The error was not produced for am335x-evm because
> usb0 dr_mode was configured as peripheral in
> 'am335x-evm-u-boot.dtsi'. This fragment is no
> longer needed.
> 
> Signed-off-by: Julien Panis <jpanis@baylibre.com>
> ---
> Changes in v4:
> - Handle usb dual-role feature as peripheral in ti-musb driver.
> - Link to v3: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v3-1-40493e1d7c0b@baylibre.com
> 
> Changes in v3:
> - Remove usb0 dr_mode configuration from 'am335x-evm-u-boot.dtsi'.
> - Link to v2: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v2-0-ff121f0e8d7a@baylibre.com
> 
> Changes in v2:
> - Drop the modification made in arch/arm/mach-omap2/am33xx/board.c
> - Configure usb0 dr_mode as peripheral in 'am335x-icev2-u-boot.dtsi'
>   and 'am335x-evmsk-u-boot.dtsi' device trees.
> - Link to v1: https://lore.kernel.org/r/20230621-fix_usb_ether_init-v1-1-2156923994a9@baylibre.com
> 
> ---
> Julien Panis (2):
>       musb-new: ti-musb: Handle usb dual-role feature as peripheral
>       arm: dts: am335x-evm-u-boot: Remove usb0 mode configuration

for this series:
Reviewed-by: Roger Quadros <rogerq@kernel.org>

I also see other boards doing the wrong thing. i.e. replacing 'otg' with 'peripheral'.

dra71-evm-u-boot.dtsi:	dr_mode = "peripheral";
dra72-evm-revc-u-boot.dtsi:	dr_mode = "peripheral";
dra72-evm-u-boot.dtsi:	dr_mode = "peripheral";
dra76-evm-u-boot.dtsi:	dr_mode = "peripheral";
dra7-evm-u-boot.dtsi:	dr_mode = "peripheral";
k3-am642-evm-u-boot.dtsi:	dr_mode="peripheral";
k3-am654-r5-base-board-u-boot.dtsi:	dr_mode = "peripheral";
k3-am654-r5-base-board-u-boot.dtsi:	dr_mode = "peripheral";
k3-j7200-common-proc-board-u-boot.dtsi:	dr_mode = "peripheral";
k3-j721e-common-proc-board-u-boot.dtsi:	dr_mode = "peripheral";
keystone-k2e-evm-u-boot.dtsi:		dr_mode = "peripheral";

Is this something you can fix (in dwc3 driver) as it is on similar lines ;). Thanks!

-- 
cheers,
-roger

Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Tom Rini]

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On Thu, Jul 06, 2023 at 12:40:22PM +0200, Julien Panis wrote:

> This prevents from getting some 'No USB device found' error,
> in usb_ether_init() function for instance.
> 
> Signed-off-by: Julien Panis <jpanis@baylibre.com>
> Reviewed-by: Tony Lindgren <tony@atomide.com>
> Reviewed-by: Nishanth Menon <nm@ti.com>
> ---
>  drivers/usb/musb-new/ti-musb.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
> index 3be3f93dd85d..44697dc31387 100644
> --- a/drivers/usb/musb-new/ti-musb.c
> +++ b/drivers/usb/musb-new/ti-musb.c
> @@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
>  		dr_mode = usb_get_dr_mode(node);
>  		switch (dr_mode) {
>  		case USB_DR_MODE_PERIPHERAL:
> +		case USB_DR_MODE_OTG:
>  			/* Bind MUSB device */
>  			ret = device_bind_driver_to_node(parent,
>  							 "ti-musb-peripheral",

Julien, why don't we support OTG mode here instead?

-- 
Tom

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Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Julien Panis]

On 8/14/23 19:18, Tom Rini wrote:
> On Thu, Jul 06, 2023 at 12:40:22PM +0200, Julien Panis wrote:
>
>> This prevents from getting some 'No USB device found' error,
>> in usb_ether_init() function for instance.
>>
>> Signed-off-by: Julien Panis <jpanis@baylibre.com>
>> Reviewed-by: Tony Lindgren <tony@atomide.com>
>> Reviewed-by: Nishanth Menon <nm@ti.com>
>> ---
>>   drivers/usb/musb-new/ti-musb.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
>> index 3be3f93dd85d..44697dc31387 100644
>> --- a/drivers/usb/musb-new/ti-musb.c
>> +++ b/drivers/usb/musb-new/ti-musb.c
>> @@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
>>   		dr_mode = usb_get_dr_mode(node);
>>   		switch (dr_mode) {
>>   		case USB_DR_MODE_PERIPHERAL:
>> +		case USB_DR_MODE_OTG:
>>   			/* Bind MUSB device */
>>   			ret = device_bind_driver_to_node(parent,
>>   							 "ti-musb-peripheral",
> Julien, why don't we support OTG mode here instead?
>

Roger, can this be achieved with this controller ?

Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Roger Quadros]

Hi Julien,

On 21/08/2023 11:28, Julien Panis wrote:
> On 8/14/23 19:18, Tom Rini wrote:
>> On Thu, Jul 06, 2023 at 12:40:22PM +0200, Julien Panis wrote:
>>
>>> This prevents from getting some 'No USB device found' error,
>>> in usb_ether_init() function for instance.
>>>
>>> Signed-off-by: Julien Panis <jpanis@baylibre.com>
>>> Reviewed-by: Tony Lindgren <tony@atomide.com>
>>> Reviewed-by: Nishanth Menon <nm@ti.com>
>>> ---
>>>   drivers/usb/musb-new/ti-musb.c | 1 +
>>>   1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
>>> index 3be3f93dd85d..44697dc31387 100644
>>> --- a/drivers/usb/musb-new/ti-musb.c
>>> +++ b/drivers/usb/musb-new/ti-musb.c
>>> @@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
>>>           dr_mode = usb_get_dr_mode(node);
>>>           switch (dr_mode) {
>>>           case USB_DR_MODE_PERIPHERAL:
>>> +        case USB_DR_MODE_OTG:
>>>               /* Bind MUSB device */
>>>               ret = device_bind_driver_to_node(parent,
>>>                                "ti-musb-peripheral",
>> Julien, why don't we support OTG mode here instead?
>>
> 
> Roger, can this be achieved with this controller ?

The Controller supports OTG mode but I'm not sure of the u-boot driver.

Bin / Stephan might know.

-- 
cheers,
-roger

Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Marek Vasut]

On 8/21/23 14:16, Roger Quadros wrote:
> Hi Julien,
> 
> On 21/08/2023 11:28, Julien Panis wrote:
>> On 8/14/23 19:18, Tom Rini wrote:
>>> On Thu, Jul 06, 2023 at 12:40:22PM +0200, Julien Panis wrote:
>>>
>>>> This prevents from getting some 'No USB device found' error,
>>>> in usb_ether_init() function for instance.
>>>>
>>>> Signed-off-by: Julien Panis <jpanis@baylibre.com>
>>>> Reviewed-by: Tony Lindgren <tony@atomide.com>
>>>> Reviewed-by: Nishanth Menon <nm@ti.com>
>>>> ---
>>>>    drivers/usb/musb-new/ti-musb.c | 1 +
>>>>    1 file changed, 1 insertion(+)
>>>>
>>>> diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
>>>> index 3be3f93dd85d..44697dc31387 100644
>>>> --- a/drivers/usb/musb-new/ti-musb.c
>>>> +++ b/drivers/usb/musb-new/ti-musb.c
>>>> @@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
>>>>            dr_mode = usb_get_dr_mode(node);
>>>>            switch (dr_mode) {
>>>>            case USB_DR_MODE_PERIPHERAL:
>>>> +        case USB_DR_MODE_OTG:
>>>>                /* Bind MUSB device */
>>>>                ret = device_bind_driver_to_node(parent,
>>>>                                 "ti-musb-peripheral",
>>> Julien, why don't we support OTG mode here instead?
>>>
>>
>> Roger, can this be achieved with this controller ?
> 
> The Controller supports OTG mode but I'm not sure of the u-boot driver.
> 
> Bin / Stephan might know.

Surely the controller supports both Host and Peripheral mode.

Re: [PATCH v4 1/2] musb-new: ti-musb: Handle usb dual-role feature as peripheral

[Tom Rini]

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On Mon, Aug 21, 2023 at 03:40:42PM +0200, Marek Vasut wrote:
> On 8/21/23 14:16, Roger Quadros wrote:
> > Hi Julien,
> > 
> > On 21/08/2023 11:28, Julien Panis wrote:
> > > On 8/14/23 19:18, Tom Rini wrote:
> > > > On Thu, Jul 06, 2023 at 12:40:22PM +0200, Julien Panis wrote:
> > > > 
> > > > > This prevents from getting some 'No USB device found' error,
> > > > > in usb_ether_init() function for instance.
> > > > > 
> > > > > Signed-off-by: Julien Panis <jpanis@baylibre.com>
> > > > > Reviewed-by: Tony Lindgren <tony@atomide.com>
> > > > > Reviewed-by: Nishanth Menon <nm@ti.com>
> > > > > ---
> > > > >    drivers/usb/musb-new/ti-musb.c | 1 +
> > > > >    1 file changed, 1 insertion(+)
> > > > > 
> > > > > diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
> > > > > index 3be3f93dd85d..44697dc31387 100644
> > > > > --- a/drivers/usb/musb-new/ti-musb.c
> > > > > +++ b/drivers/usb/musb-new/ti-musb.c
> > > > > @@ -302,6 +302,7 @@ static int ti_musb_wrapper_bind(struct udevice *parent)
> > > > >            dr_mode = usb_get_dr_mode(node);
> > > > >            switch (dr_mode) {
> > > > >            case USB_DR_MODE_PERIPHERAL:
> > > > > +        case USB_DR_MODE_OTG:
> > > > >                /* Bind MUSB device */
> > > > >                ret = device_bind_driver_to_node(parent,
> > > > >                                 "ti-musb-peripheral",
> > > > Julien, why don't we support OTG mode here instead?
> > > > 
> > > 
> > > Roger, can this be achieved with this controller ?
> > 
> > The Controller supports OTG mode but I'm not sure of the u-boot driver.
> > 
> > Bin / Stephan might know.
> 
> Surely the controller supports both Host and Peripheral mode.

And perhaps the other half of the disconnect here is that DWC2/DWC3 at
least behave in U-Boot as Marek is asking.

-- 
Tom

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