dt-bindings: clock: exynosautov920: add hsi2 clock definitions

Add device tree clock binding definitions for CMU_HSI2

Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250529112640.1646740-3-raghav.s@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: Raghav Sharma

Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml

@@ -37,18 +37,19 @@ properties:
       - samsung,exynosautov920-cmu-cpucl2
       - samsung,exynosautov920-cmu-hsi0
       - samsung,exynosautov920-cmu-hsi1
+      - samsung,exynosautov920-cmu-hsi2
       - samsung,exynosautov920-cmu-misc
       - samsung,exynosautov920-cmu-peric0
       - samsung,exynosautov920-cmu-peric1
       - samsung,exynosautov920-cmu-top
 
   clocks:
     minItems: 1
-    maxItems: 4
+    maxItems: 5
 
   clock-names:
     minItems: 1
-    maxItems: 4
+    maxItems: 5
 
   "#clock-cells":
     const: 1
@@ -201,6 +202,30 @@ allOf:
             - const: usbdrd
             - const: mmc_card
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynosautov920-cmu-hsi2
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (38.4 MHz)
+            - description: CMU_HSI2 NOC clock (from CMU_TOP)
+            - description: CMU_HSI2 NOC UFS clock (from CMU_TOP)
+            - description: CMU_HSI2 UFS EMBD clock (from CMU_TOP)
+            - description: CMU_HSI2 ETHERNET clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: noc
+            - const: ufs
+            - const: embd
+            - const: ethernet
+
 required:
   - compatible
   - "#clock-cells"

include/dt-bindings/clock/samsung,exynosautov920.h

@@ -286,4 +286,13 @@
 #define CLK_MOUT_HSI1_USBDRD_USER	3
 #define CLK_MOUT_HSI1_USBDRD		4
 
+/* CMU_HSI2 */
+#define FOUT_PLL_ETH                    1
+#define CLK_MOUT_HSI2_NOC_UFS_USER      2
+#define CLK_MOUT_HSI2_UFS_EMBD_USER     3
+#define CLK_MOUT_HSI2_ETHERNET          4
+#define CLK_MOUT_HSI2_ETHERNET_USER     5
+#define CLK_DOUT_HSI2_ETHERNET          6
+#define CLK_DOUT_HSI2_ETHERNET_PTP      7
+
 #endif /* _DT_BINDINGS_CLOCK_EXYNOSAUTOV920_H */