On Mon, Sep 14, 2015 at 4:36 PM, Caesar Wang <wxt@xxxxxxxxxxxxxx> wrote: > This add the necessary binding documentation for mailbox > found on RK3368 SoC. > > Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx> > --- > > .../bindings/mailbox/rockchip-mailbox.txt | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt > > diff --git a/Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt b/Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt > new file mode 100644 > index 0000000..b9b4768 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt > @@ -0,0 +1,33 @@ > +Rockchip mailbox > + > +The Rockchip mailbox is used by the Rockchip CPU cores to communicate > +requests to MCU processor. > + > +Refer to ./mailbox.txt for generic information about mailbox device-tree > +bindings. > + > +Required properties: > + > + - compatible: should be one of the following. > + - "rockchip,rk3368-mbox" for rk3368 > + - reg: physical base address of the controller and length of memory mapped > + region. > + physical base address of the share buffer and length of memory mapped > + region. Please make shared-sram a property of user drivers. Location and size of shared-memory is a platform property, mailbox controller doesn't need sram to function. For example, protocol on some platform, with this controller, may be trivial enough to not need a shared sram... say only 32-bits wide requests and responses which can be passed via mailbox registers directly. mbox_client.tx_prepare() is where the user driver sets up the shared-memory. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
