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@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
.../bindings/firmware/google,gs101-acpm-ipc.yaml | 11 +++++++++
include/dt-bindings/clock/google,gs101-acpm.h | 26 ++++++++++++++++++++++
2 files changed, 37 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-acpm.h b/include/dt-bindings/clock/google,gs101-acpm.h
new file mode 100644
index 0000000000000000000000000000000000000000..e2ba89e09fa6209f7c81f554dd511b2619009e5b
--- /dev/null
+++ b/include/dt-bindings/clock/google,gs101-acpm.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright 2025 Linaro Ltd.
+ *
+ * Device Tree binding constants for Google gs101 ACPM clock controller.
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_GOOGLE_GS101_ACPM_H
+#define _DT_BINDINGS_CLOCK_GOOGLE_GS101_ACPM_H
+
+#define GS101_CLK_ACPM_DVFS_MIF 0
+#define GS101_CLK_ACPM_DVFS_INT 1
+#define GS101_CLK_ACPM_DVFS_CPUCL0 2
+#define GS101_CLK_ACPM_DVFS_CPUCL1 3
+#define GS101_CLK_ACPM_DVFS_CPUCL2 4
+#define GS101_CLK_ACPM_DVFS_G3D 5
+#define GS101_CLK_ACPM_DVFS_G3DL2 6
+#define GS101_CLK_ACPM_DVFS_TPU 7
+#define GS101_CLK_ACPM_DVFS_INTCAM 8
+#define GS101_CLK_ACPM_DVFS_TNR 9
+#define GS101_CLK_ACPM_DVFS_CAM 10
+#define GS101_CLK_ACPM_DVFS_MFC 11
+#define GS101_CLK_ACPM_DVFS_DISP 12
+#define GS101_CLK_ACPM_DVFS_BO 13
+
+#endif /* _DT_BINDINGS_CLOCK_GOOGLE_GS101_ACPM_H */
--
2.51.0.355.g5224444f11-goog