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[PW_SID:971605] reset: spacemit: add K1 reset support #524

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[PW_SID:971605] reset: spacemit: add K1 reset support #524

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48d950d
dt-bindings: soc: spacemit: define spacemit,k1-ccu resets
alexelder Jun 13, 2025
411a48b
soc: spacemit: create a header for clock/reset registers
alexelder Jun 13, 2025
d670958
clk: spacemit: set up reset auxiliary devices
alexelder Jun 13, 2025
6ee0f54
clk: spacemit: define three reset-only CCUs
alexelder Jun 13, 2025
5d0830c
reset: spacemit: add support for SpacemiT CCU resets
alexelder Jun 13, 2025
b526ec5
riscv: dts: spacemit: add reset support for the K1 SoC
alexelder Jun 13, 2025
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27 changes: 21 additions & 6 deletions Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@ properties:
- spacemit,k1-syscon-apbc
- spacemit,k1-syscon-apmu
- spacemit,k1-syscon-mpmu
- spacemit,k1-syscon-rcpu
- spacemit,k1-syscon-rcpu2
- spacemit,k1-syscon-apbc2

reg:
maxItems: 1
Expand Down Expand Up @@ -47,23 +50,35 @@ properties:
required:
- compatible
- reg
- clocks
- clock-names
- "#clock-cells"
- "#reset-cells"

allOf:
- if:
properties:
compatible:
contains:
const: spacemit,k1-syscon-apbc
enum:
- spacemit,k1-syscon-apmu
- spacemit,k1-syscon-mpmu
then:
required:
- "#power-domain-cells"
else:
properties:
"#power-domain-cells": false
else:
- if:
properties:
compatible:
contains:
enum:
- spacemit,k1-syscon-apbc
- spacemit,k1-syscon-apmu
- spacemit,k1-syscon-mpmu
then:
required:
- "#power-domain-cells"
- clocks
- clock-names
- "#clock-cells"

additionalProperties: false

Expand Down
18 changes: 18 additions & 0 deletions arch/riscv/boot/dts/spacemit/k1.dtsi
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Expand Up @@ -346,6 +346,18 @@
dma-noncoherent;
ranges;

syscon_rcpu: system-controller@c0880000 {
compatible = "spacemit,k1-syscon-rcpu";
reg = <0x0 0xc0880000 0x0 0x2048>;
#reset-cells = <1>;
};

syscon_rcpu2: system-controller@c0888000 {
compatible = "spacemit,k1-syscon-rcpu2";
reg = <0x0 0xc0888000 0x0 0x28>;
#reset-cells = <1>;
};

syscon_apbc: system-controller@d4015000 {
compatible = "spacemit,k1-syscon-apbc";
reg = <0x0 0xd4015000 0x0 0x1000>;
Expand Down Expand Up @@ -553,6 +565,12 @@
<&cpu7_intc 3>, <&cpu7_intc 7>;
};

syscon_apbc2: system-controller@f0610000 {
compatible = "spacemit,k1-syscon-apbc2";
reg = <0x0 0xf0610000 0x0 0x20>;
#reset-cells = <1>;
};

sec_uart1: serial@f0612000 {
compatible = "spacemit,k1-uart", "intel,xscale-uart";
reg = <0x0 0xf0612000 0x0 0x100>;
Expand Down
1 change: 1 addition & 0 deletions drivers/clk/spacemit/Kconfig
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Expand Up @@ -3,6 +3,7 @@
config SPACEMIT_CCU
tristate "Clock support for SpacemiT SoCs"
depends on ARCH_SPACEMIT || COMPILE_TEST
select AUXILIARY_BUS
select MFD_SYSCON
help
Say Y to enable clock controller unit support for SpacemiT SoCs.
Expand Down
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