dt-bindings: clock: Add SC5xx clock tree bindings

Add devicetree schema for the clock tree on Analog Devices SC5xx series
SoCs.

Co-developed-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Oliver Gaskell <Oliver.Gaskell@analog.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index 38ac172c03746076071d2d9c09e598fed96fa034..c196368a725c4d8add63633b164a54f00fb323e6 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -608,6 +608,7 @@ F:  arch/arm/dts/sc5*
 F:     arch/arm/include/asm/arch-adi/
 F:     arch/arm/mach-sc5xx/
 F:     doc/device-tree-bindings/arm/adi/adi,sc5xx.yaml
+F:     doc/device-tree-bindings/clock/adi,sc5xx-clocks.yaml
 F:     drivers/clk/adi/
 F:     drivers/serial/serial_adi_uart4.c
 F:     drivers/timer/adi_sc5xx_timer.c

diff --git a/doc/device-tree-bindings/clock/adi,sc5xx-clocks.yaml b/doc/device-tree-bindings/clock/adi,sc5xx-clocks.yaml
new file mode 100644 (file)
index 0000000..9bbd546
--- /dev/null
+++ b/doc/device-tree-bindings/clock/adi,sc5xx-clocks.yaml
@@ -0,0 +1,112 @@
+# SPDX-License-Identifier: (GPL-2.0+)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/adi,sc5xx-clocks.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock Tree Drivers for Analog Devices SC5XX Processors
+
+maintainers:
+  - Vasileios Bimpikas <vasileios.bimpikas@analog.com>
+  - Utsav Agarwal <utsav.agarwal@analog.com>
+  - Arturs Artamonovs <arturs.artamonovs@analog.com>
+
+description: |
+  These drivers read in the processors CDU (clock distribution unit)
+  and CGU (clock generation unit) values to determine various clock
+  rates
+
+properties:
+  compatible:
+    enum:
+      - adi,sc5xx-clocks # Any
+      - adi,sc57x-clocks # 32-Bit SC573 processor
+      - adi,sc58x-clocks # 32-Bit SC584, SC589 processors
+      - adi,sc594-clocks # 32-Bit SC594 processor
+      - adi,sc598-clocks # 64-Bit SC598 processor
+
+  '#clock-cells':
+    const: 1
+
+  reg:
+    minItems: 3
+    maxItems: 4
+
+  reg-names:
+    description:
+      String reference names for the reg property
+    minItems: 3
+    maxItems: 4
+
+  clocks:
+    description:
+      Specifies the CLKIN0 and CLKIN1 reference clock(s) from which the
+      output frequencies are derived via CDU+CGU
+    minItems: 2
+    maxItems: 2
+
+  clock-names:
+    description:
+      String reference names for CLKIN0 and CLKIN1
+    minItems: 2
+    maxItems: 2
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - '#clock-cells'
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    clk0: clocks@3108d000 {
+      compatible = "adi,sc57x-clocks";
+      reg = <0x3108d000 0x1000>,
+            <0x3108e000 0x1000>,
+            <0x3108f000 0x1000>;
+      #clock-cells = <1>;
+      clocks = <&sys_clkin0>, <&sys_clkin1>;
+      clock-names = "sys_clkin0", "sys_clkin1";
+      status = "okay";
+    };
+
+  - |
+    clk1: clocks@3108d000 {
+      compatible = "adi,sc58x-clocks";
+      reg = <0x3108d000 0x1000>,
+            <0x3108e000 0x1000>,
+            <0x3108f000 0x1000>;
+      #clock-cells = <1>;
+      clocks = <&sys_clkin0>, <&sys_clkin1>;
+      clock-names = "sys_clkin0", "sys_clkin1";
+      status = "okay";
+    };
+
+  - |
+    clk2: clocks@3108d000 {
+      compatible = "adi,sc594-clocks";
+      reg = <0x3108d000 0x1000>,
+            <0x3108e000 0x1000>,
+            <0x3108f000 0x1000>;
+      #clock-cells = <1>;
+      clocks = <&sys_clkin0>, <&sys_clkin1>;
+      clock-names = "sys_clkin0", "sys_clkin1";
+      status = "okay";
+    };
+
+  - |
+    clk3: clocks@3108d000 {
+      compatible = "adi,sc598-clocks";
+      reg = <0x3108d000 0x1000>,
+            <0x3108e000 0x1000>,
+            <0x3108f000 0x1000>,
+            <0x310a9000 0x1000>;
+      #clock-cells = <1>;
+      clocks = <&sys_clkin0>, <&sys_clkin1>;
+      clock-names = "sys_clkin0", "sys_clkin1";
+      status = "okay";
+    };
+