linux-kernel - [PATCH v2 5/6] dt-bindings: clock: xilinx: describe whether dynamic reconfig is enabled

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240913191037.2690-6-hpausten@protonmail.com>
Date: Fri, 13 Sep 2024 19:11:37 +0000
From: Harry Austen <hpausten@...tonmail.com>
To: Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Michal Simek <michal.simek@....com>
Cc: Shubhrajyoti Datta <shubhrajyoti.datta@....com>, linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Harry Austen <hpausten@...tonmail.com>
Subject: [PATCH v2 5/6] dt-bindings: clock: xilinx: describe whether dynamic reconfig is enabled

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@...tonmail.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