Add dt schema documentation and clock IDs for the Display Process Unit
(DPU) clock management unit (CMU). This CMU feeds IPs such as image scaler,
enhancer and compressor.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Changes in v3
 - alphanumeric in gs101.h header (Andre)
Changes in v2
 - alphanumeric placement (Krzysztof)
---
 .../bindings/clock/google,gs101-clock.yaml         | 19 ++++++++++++
 include/dt-bindings/clock/google,gs101.h           | 36 ++++++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml b/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
index c41043c7d25200fe947a2ca5b2780e4dd50ad433..5122c5827718a3e3defbbecd926ec40e16574529 100644
--- a/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml
@@ -29,6 +29,7 @@ properties:
     enum:
       - google,gs101-cmu-top
       - google,gs101-cmu-apm
+      - google,gs101-cmu-dpu
       - google,gs101-cmu-hsi0
       - google,gs101-cmu-hsi2
       - google,gs101-cmu-misc
@@ -82,6 +83,24 @@ allOf:
           items:
             - const: oscclk
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: google,gs101-cmu-dpu
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (24.576 MHz)
+            - description: DPU bus clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: bus
+
   - if:
       properties:
         compatible:
diff --git a/include/dt-bindings/clock/google,gs101.h b/include/dt-bindings/clock/google,gs101.h
index 442f9e9037dc33198a1cee20af62fc70bbd96605..7a14dcb9f17b1e95d792b0c29fc6b8bfdc78213d 100644
--- a/include/dt-bindings/clock/google,gs101.h
+++ b/include/dt-bindings/clock/google,gs101.h
@@ -313,6 +313,42 @@
 #define CLK_APM_PLL_DIV4_APM				70
 #define CLK_APM_PLL_DIV16_APM				71
 
+/* CMU_DPU */
+#define CLK_MOUT_DPU_BUS_USER				1
+#define CLK_DOUT_DPU_BUSP				2
+#define CLK_GOUT_DPU_PCLK				3
+#define CLK_GOUT_DPU_CLK_DPU_OSCCLK_CLK			4
+#define CLK_GOUT_DPU_AD_APB_DPU_DMA_PCLKM		5
+#define CLK_GOUT_DPU_DPUF_ACLK_DMA			6
+#define CLK_GOUT_DPU_DPUF_ACLK_DPP			7
+#define CLK_GOUT_DPU_D_TZPC_DPU_PCLK			8
+#define CLK_GOUT_DPU_GPC_DPU_PCLK			9
+#define CLK_GOUT_DPU_LHM_AXI_P_DPU_I_CLK		10
+#define CLK_GOUT_DPU_LHS_AXI_D0_DPU_I_CLK		11
+#define CLK_GOUT_DPU_LHS_AXI_D1_DPU_I_CLK		12
+#define CLK_GOUT_DPU_LHS_AXI_D2_DPU_I_CLK		13
+#define CLK_GOUT_DPU_PPMU_DPUD0_ACLK			14
+#define CLK_GOUT_DPU_PPMU_DPUD0_PCLK			15
+#define CLK_GOUT_DPU_PPMU_DPUD1_ACLK			16
+#define CLK_GOUT_DPU_PPMU_DPUD1_PCLK			17
+#define CLK_GOUT_DPU_PPMU_DPUD2_ACLK			18
+#define CLK_GOUT_DPU_PPMU_DPUD2_PCLK			19
+#define CLK_GOUT_DPU_CLK_DPU_BUSD_CLK			20
+#define CLK_GOUT_DPU_CLK_DPU_BUSP_CLK			21
+#define CLK_GOUT_DPU_SSMT_DPU0_ACLK			22
+#define CLK_GOUT_DPU_SSMT_DPU0_PCLK			23
+#define CLK_GOUT_DPU_SSMT_DPU1_ACLK			24
+#define CLK_GOUT_DPU_SSMT_DPU1_PCLK			25
+#define CLK_GOUT_DPU_SSMT_DPU2_ACLK			26
+#define CLK_GOUT_DPU_SSMT_DPU2_PCLK			27
+#define CLK_GOUT_DPU_SYSMMU_DPUD0_CLK_S1		28
+#define CLK_GOUT_DPU_SYSMMU_DPUD0_CLK_S2		29
+#define CLK_GOUT_DPU_SYSMMU_DPUD1_CLK_S1		30
+#define CLK_GOUT_DPU_SYSMMU_DPUD1_CLK_S2		31
+#define CLK_GOUT_DPU_SYSMMU_DPUD2_CLK_S1		32
+#define CLK_GOUT_DPU_SYSMMU_DPUD2_CLK_S2		33
+#define CLK_GOUT_DPU_SYSREG_DPU_PCLK			34
+
 /* CMU_HSI0 */
 #define CLK_FOUT_USB_PLL					1
 #define CLK_MOUT_PLL_USB					2

-- 
2.52.0.457.g6b5491de43-goog

On Tue, 13 Jan 2026 10:58:59 +0000, Peter Griffin wrote:
> Add dt schema documentation and clock IDs for the Display Process Unit
> (DPU) clock management unit (CMU). This CMU feeds IPs such as image scaler,
> enhancer and compressor.
> 
> Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
> ---
> Changes in v3
>  - alphanumeric in gs101.h header (Andre)
> Changes in v2
>  - alphanumeric placement (Krzysztof)
> ---
>  .../bindings/clock/google,gs101-clock.yaml         | 19 ++++++++++++
>  include/dt-bindings/clock/google,gs101.h           | 36 ++++++++++++++++++++++
>  2 files changed, 55 insertions(+)
> 

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

On Tue, 2026-01-13 at 10:58 +0000, Peter Griffin wrote:
> Add dt schema documentation and clock IDs for the Display Process Unit
> (DPU) clock management unit (CMU). This CMU feeds IPs such as image scaler,
> enhancer and compressor.
> 
> Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
> ---
> Changes in v3
>  - alphanumeric in gs101.h header (Andre)
> Changes in v2
>  - alphanumeric placement (Krzysztof)
> ---
>  .../bindings/clock/google,gs101-clock.yaml         | 19 ++++++++++++
>  include/dt-bindings/clock/google,gs101.h           | 36 ++++++++++++++++++++++
>  2 files changed, 55 insertions(+)

Reviewed-by: André Draszik <andre.draszik@linaro.org>