[PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[Simon Glass]

This little series brings in some bindings that seem useful for U-Boot.

I am working mostly in U-Boot, but since there is no shared .dts repo
I was asked to commit these changes to the kernel. I do not propose to
update the Linux USB drivers to match.


Simon Glass (3):
  arm: tegra: dts: Support host/device selection and legacy mode
  arm: tegra: dts: Add legacy mode support to Tegra2x USB1 port
  arm: tegra: dts: Mark USB1 as an OTG port on Seaboard

 .../devicetree/bindings/usb/tegra-usb.txt          |   13 +++++++++++++
 arch/arm/boot/dts/tegra-seaboard.dts               |    1 +
 arch/arm/boot/dts/tegra20.dtsi                     |    1 +
 3 files changed, 15 insertions(+), 0 deletions(-)

-- 
1.7.7.3

[PATCH 1/3] arm: tegra: dts: Support host/device selection and legacy mode

[Simon Glass]

Some USB ports can support host and device operation. We add the dr_mode
property (as found in Freescale) for this.

One USB port has a 'legacy mode', left over from the days of pre-Tegra
chips. I don't believe this is actually used, except that we must know
to turn this off in the driver.

Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---
 .../devicetree/bindings/usb/tegra-usb.txt          |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/tegra-usb.txt b/Documentation/devicetree/bindings/usb/tegra-usb.txt
index 035d63d..007005d 100644
--- a/Documentation/devicetree/bindings/usb/tegra-usb.txt
+++ b/Documentation/devicetree/bindings/usb/tegra-usb.txt
@@ -11,3 +11,16 @@ Required properties :
  - phy_type : Should be one of "ulpi" or "utmi".
  - nvidia,vbus-gpio : If present, specifies a gpio that needs to be
    activated for the bus to be powered.
+
+Optional properties:
+  - dr_mode : dual role mode. Indicates the working mode for
+   nvidia,tegra20-ehci compatible controllers.  Can be "host", "peripheral",
+   or "otg".  Default to "host" if not defined for backward compatibility.
+      host means this is a host controller
+      peripheral means it is device controller
+      otg means it can operate as either ("on the go")
+  - nvidia,has-legacy-mode : boolean indicates whether this controller can
+    operate in legacy mode (as APX 2500 / 2600). In legacy mode some
+    registers are accessed through the APB_MISC base address instead of
+    the USB controller. Since this is a legacy issue it probably does not
+    warrant a compatible string of its own.
-- 
1.7.7.3

[PATCH 2/3] arm: tegra: dts: Add legacy mode support to Tegra2x USB1 port

[Simon Glass]

Tegra's USB1 port supports legacy mode, so mark it as such. Even if we
don't use it, we must turn it off in the driver.

Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---
 arch/arm/boot/dts/tegra20.dtsi |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index ec1f010..a322c11 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -184,6 +184,7 @@
 		reg = <0xc5000000 0x4000>;
 		interrupts = < 0 20 0x04 >;
 		phy_type = "utmi";
+		nvidia,has-legacy-mode;
 	};
 
 	usb@c5004000 {
-- 
1.7.7.3

[PATCH 3/3] arm: tegra: dts: Mark USB1 as an OTG port on Seaboard

[Simon Glass]

The USB1 port on Tegra2 supports operation in host or device modes. On
Seaboard this is possible, so mark the port as OTG.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 arch/arm/boot/dts/tegra-seaboard.dts |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/tegra-seaboard.dts b/arch/arm/boot/dts/tegra-seaboard.dts
index 876d5c9..dbf1c5a 100644
--- a/arch/arm/boot/dts/tegra-seaboard.dts
+++ b/arch/arm/boot/dts/tegra-seaboard.dts
@@ -112,6 +112,7 @@
 
 	usb@c5000000 {
 		nvidia,vbus-gpio = <&gpio 24 0>; /* PD0 */
+		dr_mode = "otg";
 	};
 
 	gpio-keys {
-- 
1.7.7.3

RE: [PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[Stephen Warren]

Simon Glass wrote at riday, February 03, 2012 9:56 AM:
> This little series brings in some bindings that seem useful for U-Boot.
> 
> I am working mostly in U-Boot, but since there is no shared .dts repo
> I was asked to commit these changes to the kernel. I do not propose to
> update the Linux USB drivers to match.

I think the series looks reasonable, so:

Acked-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org<>

(I note that the kernel's USB driver for USB1 doesn't attempt to clear
legacy mode; I wonder how we're getting away with that. Perhaps it's
only been tested with a bootloader that's already cleared legacy mode)

-- 
nvpublic

Re: [PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[Simon Glass]

+Olof

Hi,

On Fri, Feb 3, 2012 at 11:59 AM, Stephen Warren <swarren@nvidia.com> wrote:
> Simon Glass wrote at riday, February 03, 2012 9:56 AM:
>> This little series brings in some bindings that seem useful for U-Boot.
>>
>> I am working mostly in U-Boot, but since there is no shared .dts repo
>> I was asked to commit these changes to the kernel. I do not propose to
>> update the Linux USB drivers to match.
>
> I think the series looks reasonable, so:
>
> Acked-by: Stephen Warren <swarren@nvidia.com<>
>
> (I note that the kernel's USB driver for USB1 doesn't attempt to clear
> legacy mode; I wonder how we're getting away with that. Perhaps it's
> only been tested with a bootloader that's already cleared legacy mode)
>

How does this series get picked up, please?

Regards,
Simon

> --
> nvpublic
>

Re: [PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[Olof Johansson]

On Tue, Mar 6, 2012 at 7:16 PM, Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> wrote:
> +Olof
>
> Hi,
>
> On Fri, Feb 3, 2012 at 11:59 AM, Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> wrote:
>> Simon Glass wrote at riday, February 03, 2012 9:56 AM:
>>> This little series brings in some bindings that seem useful for U-Boot.
>>>
>>> I am working mostly in U-Boot, but since there is no shared .dts repo
>>> I was asked to commit these changes to the kernel. I do not propose to
>>> update the Linux USB drivers to match.
>>
>> I think the series looks reasonable, so:
>>
>> Acked-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org<>
>>
>> (I note that the kernel's USB driver for USB1 doesn't attempt to clear
>> legacy mode; I wonder how we're getting away with that. Perhaps it's
>> only been tested with a bootloader that's already cleared legacy mode)
>>
>
> How does this series get picked up, please?

It drowned in the patch floods you've been sending, and it wasn't
addressed directly to me so I ignored it.

Please resend and I'll apply.


Thanks,

-Olof

Re: [PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[Simon Glass]

Hi Olof,

On Tue, Mar 6, 2012 at 8:40 PM, Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org> wrote:
> On Tue, Mar 6, 2012 at 7:16 PM, Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> wrote:
>> +Olof
>>
>> Hi,
>>
>> On Fri, Feb 3, 2012 at 11:59 AM, Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> wrote:
>>> Simon Glass wrote at riday, February 03, 2012 9:56 AM:
>>>> This little series brings in some bindings that seem useful for U-Boot.
>>>>
>>>> I am working mostly in U-Boot, but since there is no shared .dts repo
>>>> I was asked to commit these changes to the kernel. I do not propose to
>>>> update the Linux USB drivers to match.
>>>
>>> I think the series looks reasonable, so:
>>>
>>> Acked-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org<>
>>>
>>> (I note that the kernel's USB driver for USB1 doesn't attempt to clear
>>> legacy mode; I wonder how we're getting away with that. Perhaps it's
>>> only been tested with a bootloader that's already cleared legacy mode)
>>>
>>
>> How does this series get picked up, please?
>
> It drowned in the patch floods you've been sending, and it wasn't
> addressed directly to me so I ignored it.
>
> Please resend and I'll apply.

You'll be happy to hear that the flood is mostly over now. I have
resent and copied you this time.

Regards,
Simon

>
>
> Thanks,
>
> -Olof