Re: [RFC v2 2/2] dt-bindings: mailbox: Add Xilinx IPI Mailbox

[Rob Herring]

On Sun, Dec 03, 2017 at 10:25:35PM -0800, Wendy Liang wrote:
> Xilinx ZynqMP IPI(Inter Processor Interrupt) is a hardware block
> in ZynqMP SoC used for the communication between various processor
> systems.
> 
> Signed-off-by: Wendy Liang 
> ---
>  .../bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt   | 104 
> +
>  1 file changed, 104 insertions(+)
>  create mode 100644 
> Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt

Reviewed-by: Rob Herring 

Re: [RFC v2 2/2] dt-bindings: mailbox: Add Xilinx IPI Mailbox

[Rob Herring]

On Sun, Dec 03, 2017 at 10:25:35PM -0800, Wendy Liang wrote:
> Xilinx ZynqMP IPI(Inter Processor Interrupt) is a hardware block
> in ZynqMP SoC used for the communication between various processor
> systems.
> 
> Signed-off-by: Wendy Liang 
> ---
>  .../bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt   | 104 
> +
>  1 file changed, 104 insertions(+)
>  create mode 100644 
> Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt

Reviewed-by: Rob Herring 

[RFC v2 2/2] dt-bindings: mailbox: Add Xilinx IPI Mailbox

[Wendy Liang]

Xilinx ZynqMP IPI(Inter Processor Interrupt) is a hardware block
in ZynqMP SoC used for the communication between various processor
systems.

Signed-off-by: Wendy Liang 
---
 .../bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt   | 104 +
 1 file changed, 104 insertions(+)
 create mode 100644 
Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt

diff --git 
a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt 
b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
new file mode 100644
index 000..5e270a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
@@ -0,0 +1,104 @@
+Xilinx IPI Mailbox Controller
+
+
+The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
+messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
+agent owns registers used for notification and buffers for message.
+
+   +-+
+   | Xilinx ZynqMP IPI Controller|
+   +-+
++--+
+ATF| |
+   | |
+   | |
++--+ |
+   | |
+   | |
++--+
++--+
+|  ++   ++ |
+Hardware|  |  IPI Agent |   |  IPI Buffers   | |
+|  |  Registers |   || |
+|  ||   || |
+|  ++   ++ |
+|  |
+| Xilinx IPI Agent Block   |
++--+
+
+
+Controller Device Node:
+===
+Required properties:
+
+- compatible:  Shall be: "xlnx,zynqmp-ipi-mailbox"
+- reg: IPI buffers address ranges
+- reg-names:   Names of the reg resources. It should have:
+   * local_request_region
+ - IPI request msg buffer written by local and read
+   by remote
+   * local_response_region
+ - IPI response msg buffer written by local and read
+   by remote
+   * remote_request_region
+ - IPI request msg buffer written by remote and read
+   by local
+   * remote_response_region
+ - IPI response msg buffer written by remote and read
+   by local
+- #mbox-cells: Shall be 1. It contains:
+   * tx(0) or rx(1) channel
+- xlnx,ipi-ids:Xilinx IPI agent IDs of the two peers of the
+   Xilinx IPI communication channel.
+- interrupt-parent:Phandle for the interrupt controller
+- interrupts:  Interrupt information corresponding to the
+   interrupt-names property.
+
+Optional properties:
+
+- method:  The method of accessing the IPI agent registers.
+   Permitted values are: "smc" and "hvc". Default is
+   "smc".
+
+Example:
+===
+   /* APU<->RPU0 IPI mailbox controller */
+   ipi_mailbox_rpu0: mailbox@ff90400 {
+   compatible = "xlnx,zynqmp-ipi-mailbox";
+   reg = <0x0 0xff990400 0x0 0x20>,
+ <0x0 0xff990420 0x0 0x20>,
+ <0x0 0xff990080 0x0 0x20>,
+ <0x0 0xff9900a0 0x0 0x20>;
+   reg-names = "local_request_region", "local_response_region",
+   "remote_request_region", "remote_response_region";
+   #mbox-cells = <1>;
+   xlnx-ipi-ids = <0 1>;
+   interrupt-parent = <>;
+   interrupts = <0 29 4>;
+   };
+   /* APU<->RPU1 IPI mailbox controller */
+   ipi_mailbox_rpu1: mailbox@ff990440 {
+   compatible = "xlnx,zynqmp-ipi-mailbox";
+   reg = <0x0 0xff990440 0x0 0x20>,
+ <0x0 0xff990460 0x0 0x20>,
+ <0x0 0xff990280 0x0 0x20>,
+ <0x0 0xff9902a0 0x0 0x20>;
+   reg-names = "local_request_region", "local_response_region",
+   "remote_request_region", "remote_response_region";
+   #mbox-cells = <1>;
+   xlnx-ipi-ids = <0 2>;
+   interrupt-parent = <>;
+  

[RFC v2 2/2] dt-bindings: mailbox: Add Xilinx IPI Mailbox

[Wendy Liang]

Xilinx ZynqMP IPI(Inter Processor Interrupt) is a hardware block
in ZynqMP SoC used for the communication between various processor
systems.

Signed-off-by: Wendy Liang 
---
 .../bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt   | 104 +
 1 file changed, 104 insertions(+)
 create mode 100644 
Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt

diff --git 
a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt 
b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
new file mode 100644
index 000..5e270a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
@@ -0,0 +1,104 @@
+Xilinx IPI Mailbox Controller
+
+
+The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
+messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
+agent owns registers used for notification and buffers for message.
+
+   +-+
+   | Xilinx ZynqMP IPI Controller|
+   +-+
++--+
+ATF| |
+   | |
+   | |
++--+ |
+   | |
+   | |
++--+
++--+
+|  ++   ++ |
+Hardware|  |  IPI Agent |   |  IPI Buffers   | |
+|  |  Registers |   || |
+|  ||   || |
+|  ++   ++ |
+|  |
+| Xilinx IPI Agent Block   |
++--+
+
+
+Controller Device Node:
+===
+Required properties:
+
+- compatible:  Shall be: "xlnx,zynqmp-ipi-mailbox"
+- reg: IPI buffers address ranges
+- reg-names:   Names of the reg resources. It should have:
+   * local_request_region
+ - IPI request msg buffer written by local and read
+   by remote
+   * local_response_region
+ - IPI response msg buffer written by local and read
+   by remote
+   * remote_request_region
+ - IPI request msg buffer written by remote and read
+   by local
+   * remote_response_region
+ - IPI response msg buffer written by remote and read
+   by local
+- #mbox-cells: Shall be 1. It contains:
+   * tx(0) or rx(1) channel
+- xlnx,ipi-ids:Xilinx IPI agent IDs of the two peers of the
+   Xilinx IPI communication channel.
+- interrupt-parent:Phandle for the interrupt controller
+- interrupts:  Interrupt information corresponding to the
+   interrupt-names property.
+
+Optional properties:
+
+- method:  The method of accessing the IPI agent registers.
+   Permitted values are: "smc" and "hvc". Default is
+   "smc".
+
+Example:
+===
+   /* APU<->RPU0 IPI mailbox controller */
+   ipi_mailbox_rpu0: mailbox@ff90400 {
+   compatible = "xlnx,zynqmp-ipi-mailbox";
+   reg = <0x0 0xff990400 0x0 0x20>,
+ <0x0 0xff990420 0x0 0x20>,
+ <0x0 0xff990080 0x0 0x20>,
+ <0x0 0xff9900a0 0x0 0x20>;
+   reg-names = "local_request_region", "local_response_region",
+   "remote_request_region", "remote_response_region";
+   #mbox-cells = <1>;
+   xlnx-ipi-ids = <0 1>;
+   interrupt-parent = <>;
+   interrupts = <0 29 4>;
+   };
+   /* APU<->RPU1 IPI mailbox controller */
+   ipi_mailbox_rpu1: mailbox@ff990440 {
+   compatible = "xlnx,zynqmp-ipi-mailbox";
+   reg = <0x0 0xff990440 0x0 0x20>,
+ <0x0 0xff990460 0x0 0x20>,
+ <0x0 0xff990280 0x0 0x20>,
+ <0x0 0xff9902a0 0x0 0x20>;
+   reg-names = "local_request_region", "local_response_region",
+   "remote_request_region", "remote_response_region";
+   #mbox-cells = <1>;
+   xlnx-ipi-ids = <0 2>;
+   interrupt-parent = <>;
+   interrupts = <0