linux-kernel - [PATCH v2 1/5] dt-bindings: firmware: google,gs101-acpm-ipc: add #clock-cells

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: <20250827-acpm-clk-v2-1-de5c86b49b64@linaro.org>
Date: Wed, 27 Aug 2025 12:42:11 +0000
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Peter Griffin <peter.griffin@...aro.org>, 
 André Draszik <andre.draszik@...aro.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Chanwoo Choi <cw00.choi@...sung.com>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-clk@...r.kernel.org, willmcvicker@...gle.com, kernel-team@...roid.com, 
 Tudor Ambarus <tudor.ambarus@...aro.org>
Subject: [PATCH v2 1/5] dt-bindings: firmware: google,gs101-acpm-ipc: add
 #clock-cells

The firmware exposes clocks that can be controlled via the
Alive Clock and Power Manager (ACPM) interface.

Make the ACPM node a clock provider by adding the mandatory
"#clock-cells" property, which allows devices to reference its
clock outputs.

Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
 .../bindings/firmware/google,gs101-acpm-ipc.yaml          | 11 +++++++++++
 include/dt-bindings/clock/google,gs101.h                  | 15 +++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml b/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml
index 9785aac3b5f34955bbfe2718eec48581d050954f..d3bca6088d128485618bb2b538ed8596b4ba14f0 100644
--- a/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml
+++ b/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml
@@ -24,6 +24,15 @@ properties:
   compatible:
     const: google,gs101-acpm-ipc
 
+  "#clock-cells":
+    const: 1
+    description:
+      Clocks that are variable and index based. These clocks don't provide
+      an entire range of values between the limits but only discrete points
+      within the range. The firmware also manages the voltage scaling
+      appropriately with the clock scaling. The argument is the ID of the
+      clock contained by the firmware messages.
+
   mboxes:
     maxItems: 1
 
@@ -45,6 +54,7 @@ properties:
 
 required:
   - compatible
+  - "#clock-cells"
   - mboxes
   - shmem
 
@@ -56,6 +66,7 @@ examples:
 
     power-management {
         compatible = "google,gs101-acpm-ipc";
+        #clock-cells = <1>;
         mboxes = <&ap2apm_mailbox>;
         shmem = <&apm_sram>;
 
diff --git a/include/dt-bindings/clock/google,gs101.h b/include/dt-bindings/clock/google,gs101.h
index 442f9e9037dc33198a1cee20af62fc70bbd96605..f1d0df412fdd49b300db4ba88bc0b1674cf0cdf8 100644
--- a/include/dt-bindings/clock/google,gs101.h
+++ b/include/dt-bindings/clock/google,gs101.h
@@ -634,4 +634,19 @@
 #define CLK_GOUT_PERIC1_CLK_PERIC1_USI9_USI_CLK		45
 #define CLK_GOUT_PERIC1_SYSREG_PERIC1_PCLK		46
 
+#define CLK_ACPM_DVFS_MIF				0
+#define CLK_ACPM_DVFS_INT				1
+#define CLK_ACPM_DVFS_CPUCL0				2
+#define CLK_ACPM_DVFS_CPUCL1				3
+#define CLK_ACPM_DVFS_CPUCL2				4
+#define CLK_ACPM_DVFS_G3D				5
+#define CLK_ACPM_DVFS_G3DL2				6
+#define CLK_ACPM_DVFS_TPU				7
+#define CLK_ACPM_DVFS_INTCAM				8
+#define CLK_ACPM_DVFS_TNR				9
+#define CLK_ACPM_DVFS_CAM				10
+#define CLK_ACPM_DVFS_MFC				11
+#define CLK_ACPM_DVFS_DISP				12
+#define CLK_ACPM_DVFS_BO				13
+
 #endif /* _DT_BINDINGS_CLOCK_GOOGLE_GS101_H */

-- 
2.51.0.261.g7ce5a0a67e-goog