riscv: dts: spacemit: k3: add clock tree

Add clock support to SpacemiT K3 SoC, the clock tree consist of several
blocks which are APBC, APMU, DCIU, MPUM.

Link: https://lore.kernel.org/r/20260304-01-dts-uart-full-v1-1-50a0aa53a245@kernel.org
Signed-off-by: Yixun Lan <dlan@kernel.org>

diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
index b69cf81b5d553c893b57f79b41ff87ace4b7f650..e3d7f3102fd57502f562a6144971d20296acec46 100644 (file)
--- a/arch/riscv/boot/dts/spacemit/k3.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
@@ -4,6 +4,7 @@
  * Copyright (c) 2026 Guodong Xu <guodong@riscstar.com>
  */
 
+#include <dt-bindings/clock/spacemit,k3-clocks.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 
 /dts-v1/;
@@ -398,6 +399,36 @@
                };
        };
 
+       clocks {
+               vctcxo_1m: clock-1m {
+                       compatible = "fixed-clock";
+                       clock-frequency = <1000000>;
+                       clock-output-names = "vctcxo_1m";
+                       #clock-cells = <0>;
+               };
+
+               vctcxo_24m: clock-24m {
+                       compatible = "fixed-clock";
+                       clock-frequency = <24000000>;
+                       clock-output-names = "vctcxo_24m";
+                       #clock-cells = <0>;
+               };
+
+               vctcxo_3m: clock-3m {
+                       compatible = "fixed-clock";
+                       clock-frequency = <3000000>;
+                       clock-output-names = "vctcxo_3m";
+                       #clock-cells = <0>;
+               };
+
+               osc_32k: clock-32k {
+                       compatible = "fixed-clock";
+                       clock-frequency = <32000>;
+                       clock-output-names = "osc_32k";
+                       #clock-cells = <0>;
+               };
+       };
+
        soc: soc {
                compatible = "simple-bus";
                interrupt-parent = <&saplic>;
@@ -406,6 +437,15 @@
                dma-noncoherent;
                ranges;
 
+               syscon_apbc: system-controller@d4015000 {
+                       compatible = "spacemit,k3-syscon-apbc";
+                       reg = <0x0 0xd4015000 0x0 0x1000>;
+                       clocks = <&osc_32k>, <&vctcxo_1m>, <&vctcxo_3m>, <&vctcxo_24m>;
+                       clock-names = "osc", "vctcxo_1m", "vctcxo_3m", "vctcxo_24m";
+                       #clock-cells = <1>;
+                       #reset-cells = <1>;
+               };
+
                uart0: serial@d4017000 {
                        compatible = "spacemit,k3-uart", "intel,xscale-uart";
                        reg = <0x0 0xd4017000 0x0 0x100>;
@@ -506,6 +546,41 @@
                        status = "disabled";
                };
 
+               syscon_mpmu: system-controller@d4050000 {
+                       compatible = "spacemit,k3-syscon-mpmu";
+                       reg = <0x0 0xd4050000 0x0 0x10000>;
+                       clocks = <&osc_32k>, <&vctcxo_1m>, <&vctcxo_3m>, <&vctcxo_24m>;
+                       clock-names = "osc", "vctcxo_1m", "vctcxo_3m", "vctcxo_24m";
+                       #clock-cells = <1>;
+                       #power-domain-cells = <1>;
+                       #reset-cells = <1>;
+               };
+
+               pll: clock-controller@d4090000 {
+                       compatible = "spacemit,k3-pll";
+                       reg = <0x0 0xd4090000 0x0 0x10000>;
+                       clocks = <&vctcxo_24m>;
+                       spacemit,mpmu = <&syscon_mpmu>;
+                       #clock-cells = <1>;
+               };
+
+               syscon_apmu: system-controller@d4282800 {
+                       compatible = "spacemit,k3-syscon-apmu";
+                       reg = <0x0 0xd4282800 0x0 0x400>;
+                       clocks = <&osc_32k>, <&vctcxo_1m>, <&vctcxo_3m>, <&vctcxo_24m>;
+                       clock-names = "osc", "vctcxo_1m", "vctcxo_3m", "vctcxo_24m";
+                       #clock-cells = <1>;
+                       #power-domain-cells = <1>;
+                       #reset-cells = <1>;
+               };
+
+               syscon_dciu: system-controller@d8440000 {
+                       compatible = "spacemit,k3-syscon-dciu";
+                       reg = <0x0 0xd8440000 0x0 0xc000>;
+                       #clock-cells = <1>;
+                       #reset-cells = <1>;
+               };
+
                simsic: interrupt-controller@e0400000 {
                        compatible = "spacemit,k3-imsics", "riscv,imsics";
                        reg = <0x0 0xe0400000 0x0 0x200000>;