The J721E SoCs have two TMS320C66x DSP Core Subsystems (C66x CorePacs)
in the MAIN voltage domain, each with a C66x Fixed/Floating-Point DSP
Core, and 32 KB of L1P & L1D configurable SRAMs/Cache and an additional
288 KB of L2 configurable SRAM/Cache. These subsystems do not have
an MMU but contain a Region Address Translator (RAT) sub-module for
translating 32-bit processor addresses into larger bus addresses.
The inter-processor communication between the main A72 cores and
these processors is achieved through shared memory and Mailboxes.
Add the DT nodes for these DSP processor sub-systems in the common
k3-j721e-main.dtsi file.
The following firmware names are used by default for these cores, and
can be overridden in a board dts file if desired:
C66x_0 DSP: j7-c66_0-fw
C66x_1 DSP: j7-c66_1-fw
Signed-off-by: Suman Anna <s-anna@xxxxxx>
---
arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 26 +++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index 12ceea9b3c9a..46cde2677e17 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -1326,4 +1326,30 @@ watchdog1: watchdog@2210000 {
assigned-clocks = <&k3_clks 253 1>;
assigned-clock-parents = <&k3_clks 253 5>;
};
+
+ c66_0: dsp@4d80800000 {
+ compatible = "ti,j721e-c66-dsp";
+ reg = <0x4d 0x80800000 0x00 0x00048000>,
+ <0x4d 0x80e00000 0x00 0x00008000>,
+ <0x4d 0x80f00000 0x00 0x00008000>;
+ reg-names = "l2sram", "l1pram", "l1dram";
+ ti,sci = <&dmsc>;
+ ti,sci-dev-id = <142>;
+ ti,sci-proc-ids = <0x03 0xff>;
+ resets = <&k3_reset 142 1>;
+ firmware-name = "j7-c66_0-fw";
+ };
+
+ c66_1: dsp@4d81800000 {
+ compatible = "ti,j721e-c66-dsp";
+ reg = <0x4d 0x81800000 0x00 0x00048000>,
+ <0x4d 0x81e00000 0x00 0x00008000>,
+ <0x4d 0x81f00000 0x00 0x00008000>;
+ reg-names = "l2sram", "l1pram", "l1dram";
+ ti,sci = <&dmsc>;
+ ti,sci-dev-id = <143>;
+ ti,sci-proc-ids = <0x04 0xff>;
+ resets = <&k3_reset 143 1>;
+ firmware-name = "j7-c66_1-fw";
+ };
};
--
2.28.0
