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

[RESEND 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

[RESEND 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@chromium.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

[RESEND 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

[RESEND 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-F7+t8E8rja9g9hUCZPvPmw@public.gmane.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: [RESEND PATCH 0/3] arm: tegra: dts: USB Updates for Tegra legacy mode / OTG

[Stephen Warren]

On 03/06/2012 10:04 PM, Simon Glass wrote:
> 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

I ack'd this before, but just in case it got lost: The series,

Acked-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>