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* [PATCH v3] usb: dwc3: Add support for VBUS power control
@ 2020-06-19 14:25 Mike Looijmans
  2020-07-23  7:56 ` Vincent Whitchurch
  0 siblings, 1 reply; 8+ messages in thread
From: Mike Looijmans @ 2020-06-19 14:25 UTC (permalink / raw)
  To: linux-usb; +Cc: linux-kernel, balbi, gregkh, lgirdwood, broonie, Mike Looijmans

Support VBUS power control using regulator framework. Enables the regulator
while the port is in host mode.

The "vbus-supply" property can be provided using a usb-connector child node
and standard devicetree bindings.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
---
v2: Add missing devm_regulator_get call which got lost during rebase
v3: Remove devicetree binding, use standard usb-connector
    Fix probe fail when vbus-supply is not present

 drivers/usb/dwc3/core.c | 38 ++++++++++++++++++++++++++++++--------
 drivers/usb/dwc3/core.h |  4 ++++
 drivers/usb/dwc3/drd.c  |  6 ++----
 3 files changed, 36 insertions(+), 12 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index edc17155cb2b..42e804ede1b3 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -25,6 +25,7 @@
 #include <linux/of.h>
 #include <linux/acpi.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 
 #include <linux/usb/ch9.h>
@@ -112,6 +113,23 @@ void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode)
 	dwc->current_dr_role = mode;
 }
 
+void dwc3_set_vbus(struct dwc3 *dwc, bool enable)
+{
+	int ret;
+
+	if (enable != dwc->vbus_reg_enabled) {
+		if (enable)
+			ret = regulator_enable(dwc->vbus_reg);
+		else
+			ret = regulator_disable(dwc->vbus_reg);
+		if (!ret)
+			dwc->vbus_reg_enabled = enable;
+	}
+
+	if (dwc->usb2_phy)
+		otg_set_vbus(dwc->usb2_phy->otg, enable);
+}
+
 static void __dwc3_set_mode(struct work_struct *work)
 {
 	struct dwc3 *dwc = work_to_dwc(work);
@@ -164,8 +182,7 @@ static void __dwc3_set_mode(struct work_struct *work)
 		if (ret) {
 			dev_err(dwc->dev, "failed to initialize host\n");
 		} else {
-			if (dwc->usb2_phy)
-				otg_set_vbus(dwc->usb2_phy->otg, true);
+			dwc3_set_vbus(dwc, true);
 			phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
 			phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST);
 		}
@@ -173,8 +190,7 @@ static void __dwc3_set_mode(struct work_struct *work)
 	case DWC3_GCTL_PRTCAP_DEVICE:
 		dwc3_event_buffers_setup(dwc);
 
-		if (dwc->usb2_phy)
-			otg_set_vbus(dwc->usb2_phy->otg, false);
+		dwc3_set_vbus(dwc, false);
 		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
 		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE);
 
@@ -1183,8 +1199,7 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
 	case USB_DR_MODE_PERIPHERAL:
 		dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);
 
-		if (dwc->usb2_phy)
-			otg_set_vbus(dwc->usb2_phy->otg, false);
+		dwc3_set_vbus(dwc, false);
 		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
 		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE);
 
@@ -1198,8 +1213,7 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
 	case USB_DR_MODE_HOST:
 		dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
 
-		if (dwc->usb2_phy)
-			otg_set_vbus(dwc->usb2_phy->otg, true);
+		dwc3_set_vbus(dwc, true);
 		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
 		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST);
 
@@ -1470,6 +1484,14 @@ static int dwc3_probe(struct platform_device *pdev)
 
 	dwc3_get_properties(dwc);
 
+	dwc->vbus_reg = devm_regulator_get_optional(dev, "vbus");
+	if (IS_ERR(dwc->vbus_reg)) {
+		if (PTR_ERR(dwc->vbus_reg) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dwc->vbus_reg = NULL;
+	}
+
 	dwc->reset = devm_reset_control_array_get(dev, true, true);
 	if (IS_ERR(dwc->reset))
 		return PTR_ERR(dwc->reset);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 4c171a8e215f..cee2574d7bf4 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -1085,6 +1085,9 @@ struct dwc3 {
 
 	bool			phys_ready;
 
+	struct regulator	*vbus_reg;
+	bool			vbus_reg_enabled;
+
 	struct ulpi		*ulpi;
 	bool			ulpi_ready;
 
@@ -1397,6 +1400,7 @@ struct dwc3_gadget_ep_cmd_params {
 
 /* prototypes */
 void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode);
+void dwc3_set_vbus(struct dwc3 *dwc, bool enable);
 void dwc3_set_mode(struct dwc3 *dwc, u32 mode);
 u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type);
 
diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c
index 7db1ffc92bbd..45fdec2d128d 100644
--- a/drivers/usb/dwc3/drd.c
+++ b/drivers/usb/dwc3/drd.c
@@ -384,8 +384,7 @@ void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus)
 		if (ret) {
 			dev_err(dwc->dev, "failed to initialize host\n");
 		} else {
-			if (dwc->usb2_phy)
-				otg_set_vbus(dwc->usb2_phy->otg, true);
+			dwc3_set_vbus(dwc, true);
 			if (dwc->usb2_generic_phy)
 				phy_set_mode(dwc->usb2_generic_phy,
 					     PHY_MODE_USB_HOST);
@@ -398,8 +397,7 @@ void dwc3_otg_update(struct dwc3 *dwc, bool ignore_idstatus)
 		dwc3_event_buffers_setup(dwc);
 		spin_unlock_irqrestore(&dwc->lock, flags);
 
-		if (dwc->usb2_phy)
-			otg_set_vbus(dwc->usb2_phy->otg, false);
+		dwc3_set_vbus(dwc, false);
 		if (dwc->usb2_generic_phy)
 			phy_set_mode(dwc->usb2_generic_phy,
 				     PHY_MODE_USB_DEVICE);
-- 
2.17.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
  2020-06-19 14:25 [PATCH v3] usb: dwc3: Add support for VBUS power control Mike Looijmans
@ 2020-07-23  7:56 ` Vincent Whitchurch
  2020-07-23 11:05   ` Mark Brown
  0 siblings, 1 reply; 8+ messages in thread
From: Vincent Whitchurch @ 2020-07-23  7:56 UTC (permalink / raw)
  To: Mike Looijmans; +Cc: linux-usb, linux-kernel, balbi, gregkh, lgirdwood, broonie

On Fri, Jun 19, 2020 at 04:25:12PM +0200, Mike Looijmans wrote:
> +void dwc3_set_vbus(struct dwc3 *dwc, bool enable)
> +{
> +	int ret;
> +
> +	if (enable != dwc->vbus_reg_enabled) {
> +		if (enable)
> +			ret = regulator_enable(dwc->vbus_reg);
> +		else
> +			ret = regulator_disable(dwc->vbus_reg);

dwc->vbus_reg is set to NULL when the regulator is not present.  These
regulator_* functions expect a non-NULL pointer so a NULL check is
required before calling them.

> +		if (!ret)
> +			dwc->vbus_reg_enabled = enable;
> +	}
> +
> +	if (dwc->usb2_phy)
> +		otg_set_vbus(dwc->usb2_phy->otg, enable);
> +}
> +
>  static void __dwc3_set_mode(struct work_struct *work)
>  {
>  	struct dwc3 *dwc = work_to_dwc(work);
> @@ -164,8 +182,7 @@ static void __dwc3_set_mode(struct work_struct *work)
>  		if (ret) {
>  			dev_err(dwc->dev, "failed to initialize host\n");
>  		} else {
> -			if (dwc->usb2_phy)
> -				otg_set_vbus(dwc->usb2_phy->otg, true);
> +			dwc3_set_vbus(dwc, true);
>  			phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
>  			phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST);
>  		}
> @@ -173,8 +190,7 @@ static void __dwc3_set_mode(struct work_struct *work)
>  	case DWC3_GCTL_PRTCAP_DEVICE:
>  		dwc3_event_buffers_setup(dwc);
>  
> -		if (dwc->usb2_phy)
> -			otg_set_vbus(dwc->usb2_phy->otg, false);
> +		dwc3_set_vbus(dwc, false);
>  		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
>  		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE);
>  
> @@ -1183,8 +1199,7 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
>  	case USB_DR_MODE_PERIPHERAL:
>  		dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);
>  
> -		if (dwc->usb2_phy)
> -			otg_set_vbus(dwc->usb2_phy->otg, false);
> +		dwc3_set_vbus(dwc, false);
>  		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);
>  		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE);
>  
> @@ -1198,8 +1213,7 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
>  	case USB_DR_MODE_HOST:
>  		dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
>  
> -		if (dwc->usb2_phy)
> -			otg_set_vbus(dwc->usb2_phy->otg, true);
> +		dwc3_set_vbus(dwc, true);
>  		phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_HOST);
>  		phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_HOST);
>  
> @@ -1470,6 +1484,14 @@ static int dwc3_probe(struct platform_device *pdev)
>  
>  	dwc3_get_properties(dwc);
>  
> +	dwc->vbus_reg = devm_regulator_get_optional(dev, "vbus");
> +	if (IS_ERR(dwc->vbus_reg)) {
> +		if (PTR_ERR(dwc->vbus_reg) == -EPROBE_DEFER)
> +			return -EPROBE_DEFER;

Some drivers seem to do it this way, but I think it would be more
correct to return all errors that aren't ENODEV, like
drivers/gpu/drm/exynos/exynos_hdmi.c does.  That way you would allow the
regulator to not be present, but you also wouldn't silently ignore other
errors such as ENOMEM.

> +
> +		dwc->vbus_reg = NULL;
> +	}
> +

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
  2020-07-23  7:56 ` Vincent Whitchurch
@ 2020-07-23 11:05   ` Mark Brown
       [not found]     ` <1b153bce-a66a-45ee-a5c6-963ea6fb1c82.949ef384-8293-46b8-903f-40a477c056ae.2698920d-90ba-4c46-abda-83e18e2093c8@emailsignatures365.codetwo.com>
  0 siblings, 1 reply; 8+ messages in thread
From: Mark Brown @ 2020-07-23 11:05 UTC (permalink / raw)
  To: Vincent Whitchurch
  Cc: Mike Looijmans, linux-usb, linux-kernel, balbi, gregkh, lgirdwood


[-- Attachment #1: Type: text/plain, Size: 760 bytes --]

On Thu, Jul 23, 2020 at 09:56:14AM +0200, Vincent Whitchurch wrote:
> On Fri, Jun 19, 2020 at 04:25:12PM +0200, Mike Looijmans wrote:
> > +void dwc3_set_vbus(struct dwc3 *dwc, bool enable)
> > +{
> > +	int ret;
> > +
> > +	if (enable != dwc->vbus_reg_enabled) {
> > +		if (enable)
> > +			ret = regulator_enable(dwc->vbus_reg);
> > +		else
> > +			ret = regulator_disable(dwc->vbus_reg);
 
> dwc->vbus_reg is set to NULL when the regulator is not present.  These
> regulator_* functions expect a non-NULL pointer so a NULL check is
> required before calling them.

Does the device actually support running without power so that's a thing
that can happen?  _get_optional() should only ever be used for supplies
that may be physically absent.

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^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
       [not found]       ` <1b153bce-a66a-45ee-a5c6-963ea6fb1c82.0d2bd5fa-15cc-4b27-b94e-83614f9e5b38.ac9c2a67-d7df-4f70-81b3-db983bbfb4db@emailsignatures365.codetwo.com>
@ 2020-07-26  7:10         ` Mike Looijmans
  2020-07-27 10:23           ` Mark Brown
  0 siblings, 1 reply; 8+ messages in thread
From: Mike Looijmans @ 2020-07-26  7:10 UTC (permalink / raw)
  To: Mark Brown, Vincent Whitchurch
  Cc: linux-usb, linux-kernel, balbi, gregkh, lgirdwood


Met vriendelijke groet / kind regards,

Mike Looijmans
System Expert


TOPIC Embedded Products B.V.
Materiaalweg 4, 5681 RJ Best
The Netherlands

T: +31 (0) 499 33 69 69
E: mike.looijmans@topicproducts.com
W: www.topicproducts.com

Please consider the environment before printing this e-mail
On 23-07-2020 13:05, Mark Brown wrote:
> On Thu, Jul 23, 2020 at 09:56:14AM +0200, Vincent Whitchurch wrote:
>> On Fri, Jun 19, 2020 at 04:25:12PM +0200, Mike Looijmans wrote:
>>> +void dwc3_set_vbus(struct dwc3 *dwc, bool enable)
>>> +{
>>> +	int ret;
>>> +
>>> +	if (enable != dwc->vbus_reg_enabled) {
>>> +		if (enable)
>>> +			ret = regulator_enable(dwc->vbus_reg);
>>> +		else
>>> +			ret = regulator_disable(dwc->vbus_reg);
>   
>> dwc->vbus_reg is set to NULL when the regulator is not present.  These
>> regulator_* functions expect a non-NULL pointer so a NULL check is
>> required before calling them.
> Does the device actually support running without power so that's a thing
> that can happen?  _get_optional() should only ever be used for supplies
> that may be physically absent.

It's the 5V VBUS power for the USB "plug" that's being controlled here. 
It must turned on when the controller is in "host" mode. Some boards 
arrange this in hardware through the PHY, and some just don't have any 
control at all and have it permanently on or off. On a board where the 
5V is controlled using a GPIO line or an I2C chip, this patch is 
required to make it work.


-- 
Mike Looijmans


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
  2020-07-26  7:10         ` Mike Looijmans
@ 2020-07-27 10:23           ` Mark Brown
  2020-07-27 11:50             ` Mike Looijmans
  0 siblings, 1 reply; 8+ messages in thread
From: Mark Brown @ 2020-07-27 10:23 UTC (permalink / raw)
  To: Mike Looijmans
  Cc: Vincent Whitchurch, linux-usb, linux-kernel, balbi, gregkh, lgirdwood


[-- Attachment #1: Type: text/plain, Size: 750 bytes --]

On Sun, Jul 26, 2020 at 09:10:39AM +0200, Mike Looijmans wrote:
> On 23-07-2020 13:05, Mark Brown wrote:

> > Does the device actually support running without power so that's a thing
> > that can happen?  _get_optional() should only ever be used for supplies
> > that may be physically absent.

> It's the 5V VBUS power for the USB "plug" that's being controlled here. It
> must turned on when the controller is in "host" mode. Some boards arrange
> this in hardware through the PHY, and some just don't have any control at
> all and have it permanently on or off. On a board where the 5V is controlled
> using a GPIO line or an I2C chip, this patch is required to make it work.

That sounds like the driver should not be using _get_optional() then.

[-- Attachment #2: signature.asc --]
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^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
  2020-07-27 10:23           ` Mark Brown
@ 2020-07-27 11:50             ` Mike Looijmans
  2020-07-27 11:53               ` Mark Brown
  0 siblings, 1 reply; 8+ messages in thread
From: Mike Looijmans @ 2020-07-27 11:50 UTC (permalink / raw)
  To: Mark Brown
  Cc: Vincent Whitchurch, linux-usb, linux-kernel, balbi, gregkh, lgirdwood


Met vriendelijke groet / kind regards,

Mike Looijmans
System Expert


TOPIC Embedded Products B.V.
Materiaalweg 4, 5681 RJ Best
The Netherlands

T: +31 (0) 499 33 69 69
E: mike.looijmans@topicproducts.com
W: www.topicproducts.com

Please consider the environment before printing this e-mail
On 27-07-2020 12:23, Mark Brown wrote:
> On Sun, Jul 26, 2020 at 09:10:39AM +0200, Mike Looijmans wrote:
>> On 23-07-2020 13:05, Mark Brown wrote:
> 
>>> Does the device actually support running without power so that's a thing
>>> that can happen?  _get_optional() should only ever be used for supplies
>>> that may be physically absent.
> 
>> It's the 5V VBUS power for the USB "plug" that's being controlled here. It
>> must turned on when the controller is in "host" mode. Some boards arrange
>> this in hardware through the PHY, and some just don't have any control at
>> all and have it permanently on or off. On a board where the 5V is controlled
>> using a GPIO line or an I2C chip, this patch is required to make it work.
> 
> That sounds like the driver should not be using _get_optional() then.
> 

Making it mandatory would break most (read: all except Topic's) existing 
boards as they won't have it in their devicetree. I'm perfectly okay with 
that, but others might disagree.


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
  2020-07-27 11:50             ` Mike Looijmans
@ 2020-07-27 11:53               ` Mark Brown
  2020-07-28  7:29                 ` Mike Looijmans
  0 siblings, 1 reply; 8+ messages in thread
From: Mark Brown @ 2020-07-27 11:53 UTC (permalink / raw)
  To: Mike Looijmans
  Cc: Vincent Whitchurch, linux-usb, linux-kernel, balbi, gregkh, lgirdwood


[-- Attachment #1: Type: text/plain, Size: 1096 bytes --]

On Mon, Jul 27, 2020 at 01:50:26PM +0200, Mike Looijmans wrote:
> 
> Met vriendelijke groet / kind regards,
> 
> Mike Looijmans
> System Expert

You probably want to remove your signature when replying to the list...

> On 27-07-2020 12:23, Mark Brown wrote:
> > On Sun, Jul 26, 2020 at 09:10:39AM +0200, Mike Looijmans wrote:

> > > It's the 5V VBUS power for the USB "plug" that's being controlled here. It
> > > must turned on when the controller is in "host" mode. Some boards arrange
> > > this in hardware through the PHY, and some just don't have any control at
> > > all and have it permanently on or off. On a board where the 5V is controlled
> > > using a GPIO line or an I2C chip, this patch is required to make it work.

> > That sounds like the driver should not be using _get_optional() then.

> Making it mandatory would break most (read: all except Topic's) existing
> boards as they won't have it in their devicetree. I'm perfectly okay with
> that, but others might disagree.

No, it wouldn't break them at all - they'd get a dummy regulator
provided.

[-- Attachment #2: signature.asc --]
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^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v3] usb: dwc3: Add support for VBUS power control
  2020-07-27 11:53               ` Mark Brown
@ 2020-07-28  7:29                 ` Mike Looijmans
  0 siblings, 0 replies; 8+ messages in thread
From: Mike Looijmans @ 2020-07-28  7:29 UTC (permalink / raw)
  To: Mark Brown
  Cc: Vincent Whitchurch, linux-usb, linux-kernel, balbi, gregkh, lgirdwood


Met vriendelijke groet / kind regards,

Mike Looijmans
System Expert


TOPIC Embedded Products B.V.
Materiaalweg 4, 5681 RJ Best
The Netherlands

T: +31 (0) 499 33 69 69
E: mike.looijmans@topicproducts.com
W: www.topicproducts.com

Please consider the environment before printing this e-mail
On 27-07-2020 13:53, Mark Brown wrote:
> On Mon, Jul 27, 2020 at 01:50:26PM +0200, Mike Looijmans wrote:
>>
>> Met vriendelijke groet / kind regards,
>>
>> Mike Looijmans
>> System Expert
> 
> You probably want to remove your signature when replying to the list...
> 
>> On 27-07-2020 12:23, Mark Brown wrote:
>>> On Sun, Jul 26, 2020 at 09:10:39AM +0200, Mike Looijmans wrote:
> 
>>>> It's the 5V VBUS power for the USB "plug" that's being controlled here. It
>>>> must turned on when the controller is in "host" mode. Some boards arrange
>>>> this in hardware through the PHY, and some just don't have any control at
>>>> all and have it permanently on or off. On a board where the 5V is controlled
>>>> using a GPIO line or an I2C chip, this patch is required to make it work.
> 
>>> That sounds like the driver should not be using _get_optional() then.
> 
>> Making it mandatory would break most (read: all except Topic's) existing
>> boards as they won't have it in their devicetree. I'm perfectly okay with
>> that, but others might disagree.
> 
> No, it wouldn't break them at all - they'd get a dummy regulator
> provided.
> 

Ah, so *not* using _get_optional will yield the behaviour that I'd want. I'll 
test and make a v4 patch.

^ permalink raw reply	[flat|nested] 8+ messages in thread

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Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-19 14:25 [PATCH v3] usb: dwc3: Add support for VBUS power control Mike Looijmans
2020-07-23  7:56 ` Vincent Whitchurch
2020-07-23 11:05   ` Mark Brown
     [not found]     ` <1b153bce-a66a-45ee-a5c6-963ea6fb1c82.949ef384-8293-46b8-903f-40a477c056ae.2698920d-90ba-4c46-abda-83e18e2093c8@emailsignatures365.codetwo.com>
     [not found]       ` <1b153bce-a66a-45ee-a5c6-963ea6fb1c82.0d2bd5fa-15cc-4b27-b94e-83614f9e5b38.ac9c2a67-d7df-4f70-81b3-db983bbfb4db@emailsignatures365.codetwo.com>
2020-07-26  7:10         ` Mike Looijmans
2020-07-27 10:23           ` Mark Brown
2020-07-27 11:50             ` Mike Looijmans
2020-07-27 11:53               ` Mark Brown
2020-07-28  7:29                 ` Mike Looijmans

Linux-USB Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-usb/0 linux-usb/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-usb linux-usb/ https://lore.kernel.org/linux-usb \
		linux-usb@vger.kernel.org
	public-inbox-index linux-usb

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-usb


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git