dt-bindings: clock: meson: a1: peripherals: support sys_pll input

The 'sys_pll' input is an optional clock that can be used to generate
'sys_pll_div16', which serves as one of the sources for the GEN clock.
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240515185103.20256-5-ddrokosov@salutedevices.comSigned-off-by: Jerome Brunet <jbrunet@baylibre.com>

Documentation/devicetree/bindings/clock/amlogic,a1-peripherals-clkc.yaml

@@ -30,6 +30,8 @@ properties:
       - description: input fixed pll div7
       - description: input hifi pll
       - description: input oscillator (usually at 24MHz)
+      - description: input sys pll
+    minItems: 6 # sys_pll is optional
 
   clock-names:
     items:
@@ -39,6 +41,8 @@ properties:
       - const: fclk_div7
       - const: hifi_pll
       - const: xtal
+      - const: sys_pll
+    minItems: 6 # sys_pll is optional
 
 required:
   - compatible
@@ -65,9 +69,10 @@ examples:
                      <&clkc_pll CLKID_FCLK_DIV5>,
                      <&clkc_pll CLKID_FCLK_DIV7>,
                      <&clkc_pll CLKID_HIFI_PLL>,
-                     <&xtal>;
+                     <&xtal>,
+                     <&clkc_pll CLKID_SYS_PLL>;
             clock-names = "fclk_div2", "fclk_div3",
                           "fclk_div5", "fclk_div7",
-                          "hifi_pll", "xtal";
+                          "hifi_pll", "xtal", "sys_pll";
         };
     };

include/dt-bindings/clock/amlogic,a1-peripherals-clkc.h

@@ -164,5 +164,6 @@
 #define CLKID_DMC_SEL		151
 #define CLKID_DMC_DIV		152
 #define CLKID_DMC_SEL2		153
+#define CLKID_SYS_PLL_DIV16	154
 
 #endif /* __A1_PERIPHERALS_CLKC_H */