linux-kernel - [PATCH v7 10/23] dt-bindings: clock: imx8m-clock: add phandle to the anatop

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: <20241227165719.3902388-11-dario.binacchi@amarulasolutions.com>
Date: Fri, 27 Dec 2024 17:56:13 +0100
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: linux-amarula@...rulasolutions.com,
	Dario Binacchi <dario.binacchi@...rulasolutions.com>,
	Abel Vesa <abelvesa@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Peng Fan <peng.fan@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	Stephen Boyd <sboyd@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-clk@...r.kernel.org
Subject: [PATCH v7 10/23] dt-bindings: clock: imx8m-clock: add phandle to the anatop

Adding the phandle to the anatop node will break the ABI but will allow
for a better description of the clock generation hardware, making the
dependency of CCM on anatop explicit. Indeed, the CCM receives the PLLs
generated by anatop as inputs, which, together with the oscillators,
are used to generate the clocks for the on-chip peripherals.

By doing this, it will also be possible to generalize the CCM driver
code, which will no longer require the platform's compatible string to
retrieve the anatop device node.

Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>

---

Changes in v7:
- New

 .../devicetree/bindings/clock/imx8m-clock.yaml         | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
index c643d4a81478..b23e639e6389 100644
--- a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
@@ -43,12 +43,20 @@ properties:
       ID in its "clocks" phandle cell. See include/dt-bindings/clock/imx8m-clock.h
       for the full list of i.MX8M clock IDs.
 
+  fsl,anatop:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      The phandle to the anatop module that outputs the PLLs, which,
+      along with the oscillators, are used to generate the clocks for
+      the on-chip peripherals.
+
 required:
   - compatible
   - reg
   - clocks
   - clock-names
   - '#clock-cells'
+  - fsl,anatop
 
 allOf:
   - if:
@@ -109,6 +117,7 @@ examples:
                  <&clk_ext3>, <&clk_ext4>;
         clock-names = "osc_32k", "osc_24m", "clk_ext1", "clk_ext2",
                       "clk_ext3", "clk_ext4";
+        fsl,anatop = <&anatop>;
     };
 
   - |
@@ -120,6 +129,7 @@ examples:
                  <&clk_ext2>, <&clk_ext3>, <&clk_ext4>;
         clock-names = "ckil", "osc_25m", "osc_27m", "clk_ext1",
                       "clk_ext2", "clk_ext3", "clk_ext4";
+        fsl,anatop = <&anatop>;
     };
 
 ...
-- 
2.43.0