[PATCH] dt-bindings: clock: ti,dm816-fapll-clock: Convert to DT schema
From: Bhargav Joshi
Date: Fri Jul 17 2026 - 14:14:23 EST
Convert the Texas Instruments DM816 FAPLL clock binding from plain text
to YAML DT schema.
The text documented #clock-cells to be set as 0, while the example and
existing dt and driver require it to be 1. The schema now strictly
enforces #clock-cells = <1>.
Properties clock-indices and clock-output-names are documented in the
binding and added as required as driver strictly requires it and existing
dt already use this property.
Signed-off-by: Bhargav Joshi <j.bhargav.u@xxxxxxxxx>
---
.../devicetree/bindings/clock/ti/fapll.txt | 31 ----------
.../bindings/clock/ti/ti,dm816-fapll-clock.yaml | 72 ++++++++++++++++++++++
2 files changed, 72 insertions(+), 31 deletions(-)
diff --git a/Documentation/devicetree/bindings/clock/ti/fapll.txt b/Documentation/devicetree/bindings/clock/ti/fapll.txt
deleted file mode 100644
index 88986ef39ddd..000000000000
--- a/Documentation/devicetree/bindings/clock/ti/fapll.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-Binding for Texas Instruments FAPLL clock.
-
-This binding uses the common clock binding[1]. It assumes a
-register-mapped FAPLL with usually two selectable input clocks
-(reference clock and bypass clock), and one or more child
-syntesizers.
-
-[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible : shall be "ti,dm816-fapll-clock"
-- #clock-cells : from common clock binding; shall be set to 0.
-- clocks : link phandles of parent clocks (clk-ref and clk-bypass)
-- reg : address and length of the register set for controlling the FAPLL.
-
-Examples:
- main_fapll: main_fapll {
- #clock-cells = <1>;
- compatible = "ti,dm816-fapll-clock";
- reg = <0x400 0x40>;
- clocks = <&sys_clkin_ck &sys_clkin_ck>;
- clock-indices = <1>, <2>, <3>, <4>, <5>,
- <6>, <7>;
- clock-output-names = "main_pll_clk1",
- "main_pll_clk2",
- "main_pll_clk3",
- "main_pll_clk4",
- "main_pll_clk5",
- "main_pll_clk6",
- "main_pll_clk7";
- };
diff --git a/Documentation/devicetree/bindings/clock/ti/ti,dm816-fapll-clock.yaml b/Documentation/devicetree/bindings/clock/ti/ti,dm816-fapll-clock.yaml
new file mode 100644
index 000000000000..9b6b824faa30
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/ti/ti,dm816-fapll-clock.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/ti/ti,dm816-fapll-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments FAPLL clock
+
+maintainers:
+ - Tony Lindgren <tony@xxxxxxxxxxx>
+ - Tero Kristo <kristo@xxxxxxxxxx>
+
+description:
+ This binding uses the common clock binding. It assumes a register-mapped
+ FAPLL with usually two selectable input clocks (reference clock and bypass
+ clock), and one or more child synthesizers.
+
+properties:
+ compatible:
+ const: ti,dm816-fapll-clock
+
+ "#clock-cells":
+ const: 1
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: phandle for parent clock clk-ref
+ - description: phandle for parent clock clk-bypass
+
+ clock-indices:
+ description:
+ Maps child synthesizers to physical indices 1-7. Index 0 is physically
+ reserved for the Master PLL.
+ minItems: 1
+ maxItems: 7
+ items:
+ minimum: 1
+ maximum: 7
+
+ clock-output-names:
+ description:
+ Names of the child synthesizer outputs. The length of this array must
+ match clock-indices.
+ minItems: 1
+ maxItems: 7
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - "#clock-cells"
+ - clock-indices
+ - clock-output-names
+
+additionalProperties: false
+
+examples:
+ - |
+ clock-controller@400 {
+ #clock-cells = <1>;
+ compatible = "ti,dm816-fapll-clock";
+ reg = <0x400 0x40>;
+ clocks = <&sys_clkin_ck &sys_clkin_ck>;
+ clock-indices = <1>, <2>, <3>, <4>, <5>, <6>, <7>;
+ clock-output-names = "main_pll_clk1", "main_pll_clk2", "main_pll_clk3",
+ "main_pll_clk4", "main_pll_clk5", "main_pll_clk6",
+ "main_pll_clk7";
+
+ };
---
base-commit: 0716f9b9338a86dd27796e00ed0fd560c653323a
change-id: 20260629-ti-fapll-clock-57a02c264e60
Best regards,
--
Bhargav