Xilinx clocking wizard IP core's dynamic reconfiguration support is
optionally enabled at build time. Add a devicetree boolean property to
describe whether the hardware supports this feature or not.

Since dynamic reconfiguration support was previously assumed enabled,
introduce a property to indicate the inverse, in order to maintain
devicetree backwards compatibility. Hence, this new xlnx,static-config
property should be specified when dynamic reconfiguration support is
disabled in the IP core configuration.

Signed-off-by: Harry Austen <hpausten@protonmail.com>
---
v1 -> v2:
- Invert meaning of the new DT property
- Renamed from xlnx,dynamic-reconfig to xlnx,static-config

 .../devicetree/bindings/clock/xlnx,clocking-wizard.yaml     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml b/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml
index 9d5324dc1027a..b44a76a958f4e 100644
--- a/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml
+++ b/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml
@@ -39,6 +39,11 @@ properties:
       - const: clk_in1
       - const: s_axi_aclk
 
+  xlnx,static-config:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Indicate whether the core has been configured without support for dynamic
+      runtime reconfguration of the clocking primitive MMCM/PLL.
 
   xlnx,speed-grade:
     $ref: /schemas/types.yaml#/definitions/uint32
@@ -70,6 +75,7 @@ examples:
         compatible = "xlnx,clocking-wizard";
         reg = <0xb0000000 0x10000>;
         #clock-cells = <1>;
+        xlnx,static-config;
         xlnx,speed-grade = <1>;
         xlnx,nr-outputs = <6>;
         clock-names = "clk_in1", "s_axi_aclk";
-- 
2.46.0

Quoting Harry Austen (2024-09-13 12:11:37)
> Xilinx clocking wizard IP core's dynamic reconfiguration support is
> optionally enabled at build time. Add a devicetree boolean property to
> describe whether the hardware supports this feature or not.
> 
> Since dynamic reconfiguration support was previously assumed enabled,
> introduce a property to indicate the inverse, in order to maintain
> devicetree backwards compatibility. Hence, this new xlnx,static-config
> property should be specified when dynamic reconfiguration support is
> disabled in the IP core configuration.
> 
> Signed-off-by: Harry Austen <hpausten@protonmail.com>
> ---

Applied to clk-next

On Fri, 13 Sep 2024 19:11:37 +0000, Harry Austen wrote:
> Xilinx clocking wizard IP core's dynamic reconfiguration support is
> optionally enabled at build time. Add a devicetree boolean property to
> describe whether the hardware supports this feature or not.
> 
> Since dynamic reconfiguration support was previously assumed enabled,
> introduce a property to indicate the inverse, in order to maintain
> devicetree backwards compatibility. Hence, this new xlnx,static-config
> property should be specified when dynamic reconfiguration support is
> disabled in the IP core configuration.
> 
> Signed-off-by: Harry Austen <hpausten@protonmail.com>
> ---
> v1 -> v2:
> - Invert meaning of the new DT property
> - Renamed from xlnx,dynamic-reconfig to xlnx,static-config
> 
>  .../devicetree/bindings/clock/xlnx,clocking-wizard.yaml     | 6 ++++++
>  1 file changed, 6 insertions(+)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>