Hello.
On 08/14/2013 09:29 PM, Sebastian Andrzej Siewior wrote:
The support for both am335x-USB instances required changes to the device
tree bindings. This patch reflects these changes in the bindings
document.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
.../devicetree/bindings/usb/am33xx-usb.txt | 239 ++++++++++++++++++---
1 file changed, 210 insertions(+), 29 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/am33xx-usb.txt b/Documentation/devicetree/bindings/usb/am33xx-usb.txt
index dc9dc8c..4afb92b 100644
--- a/Documentation/devicetree/bindings/usb/am33xx-usb.txt
+++ b/Documentation/devicetree/bindings/usb/am33xx-usb.txt
@@ -1,35 +1,216 @@
[...]
+USB
+~~~
+compatible: ti,musb-am33xx
+reg: offset and length "USB Controller Registers"
+reg-names: control
+
+This node contains the musb core:
+- compatible: "mg,musbmhdr"
"mg,musbmhdrc" you mean?
+- multipoint : Should be "1" indicating the musb controller supports
multipoint. This is a MUSB configuration-specific setting.
[...]
+- num-eps : Specifies the number of endpoints. This is also a
+ MUSB configuration-specific setting. Should be set to "16"
+- ram-bits : Specifies the ram address size. Should be set to "12"
+- port-mode : Should be "3" to represent OTG. "1" signifies HOST and "2"
+ represents PERIPHERAL.
The above props should probably be prefixed with "mg," being Mentor
Graphics specific.
+- power : Should be "250". This signifies the controller can supply up to
+ 500mA when operating in host mode.
This one too.
+- phys: reference to the USB phy
+- dmas: specifies the dma channels
+- dma-names: specifies the names of the channels. Use "rxN" for receive
+ and "txN" for transmit endpoints. N specifies the endpoint number.
+
+The controller should have an "usb" alias numbered properly in the alias
+node.
+
+DMA
+~~~
+- compatible: ti,am3359-cppi41
"ti,cppi41" should follow I think.
+- reg: offset and length of the following register spaces: USBSS, USB
+ CPPI DMA Controller, USB CPPI DMA Scheduler, USB Queue Manager
+- reg-names: glue, controller, scheduler, queuemgr
+- #dma-cells: should be set to 2. The first number represents the
+ endpoint number (0 … 14 for endpoints 1 … 15 on instance 0 and 15 … 29
+ for endpoints 1 … 15 on instance 1). The second number is 0 for RX and
+ 1 for TX transfers.
+- #dma-channels: should be set to 30 representing the 15 endpoints for
+ each USB instance.
+ usb0_phy: phy@47401300 {
Perhaps better name it "usb-phy", the same as there's "ethernet-phy" in
ePAPR spec...
+ compatible = "ti,am335x-usb-phy";
+ reg = <0x47401300 0x100>;
+ reg-names = "phy";
+ ti,ctrl_mod = <&ctrl_mod>;
+ };
+ cppi41dma: dma@07402000 {
Should be named "dma-controller", not just "dma" according to the ePAPR spec:
http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf
WBR, Sergei
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