ARM: dts: keystone-k2g: Add DSP node

The Keystone 2 66AK2G SoC has a single TMS320C66x DSP Core
Subsystem (C66x CorePac), containing a C66x Fixed/Floating-Point
DSP Core, and 32 KB of L1P & L1D SRAMs and a 1 MB L2 SRAM. Add
the DT node for this DSP processor sub-system.

The DT node has a new property 'power-domains' and no 'clocks'
properties, and uses slightly different property values for
'resets' compared to other Keystone 2 SoCs. The processor does
not have an MMU, and uses various IPC Generation registers and
shared memory for inter-processor communication. The alias with
a stem 'rproc' has also been added for the DSP, it provides a
fixed remoteproc id for the DSP processor.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

diff --git a/arch/arm/boot/dts/keystone-k2g.dtsi b/arch/arm/boot/dts/keystone-k2g.dtsi
index 35726b6..826b286 100644 (file)
--- a/arch/arm/boot/dts/keystone-k2g.dtsi
+++ b/arch/arm/boot/dts/keystone-k2g.dtsi
@@ -28,6 +28,7 @@
 
        aliases {
                serial0 = &uart0;
+               rproc0 = &dsp0;
        };
 
        cpus {
@@ -147,6 +148,22 @@
                        gpio,syscon-dev = <&devctrl 0x240>;
                };
 
+               dsp0: dsp@10800000 {
+                       compatible = "ti,k2g-dsp";
+                       reg = <0x10800000 0x00100000>,
+                             <0x10e00000 0x00008000>,
+                             <0x10f00000 0x00008000>;
+                       reg-names = "l2sram", "l1pram", "l1dram";
+                       power-domains = <&k2g_pds 0x0046>;
+                       ti,syscon-dev = <&devctrl 0x844>;
+                       resets = <&k2g_reset 0x0046 0x1>;
+                       interrupt-parent = <&kirq0>;
+                       interrupts = <0 8>;
+                       interrupt-names = "vring", "exception";
+                       kick-gpios = <&dspgpio0 27 0>;
+                       status = "disabled";
+               };
+
                msgmgr: msgmgr@02a00000 {
                        compatible = "ti,k2g-message-manager";
                        #mbox-cells = <2>;