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[v7,17/23] dt-bindings: clock: imx8m-clock: add PLLs

Message ID 20241227165719.3902388-18-dario.binacchi@amarulasolutions.com (mailing list archive)
State New
Headers show
Series Support spread spectrum clocking for i.MX8N PLLs | expand

Commit Message

Dario Binacchi Dec. 27, 2024, 4:56 p.m. UTC 
Though adding the PLLs to clocks and clock-names properties will break
the ABI, it is required to accurately describe the hardware. Indeed,
the Clock Control Module (CCM) receives clocks from the PLLs and
oscillators and generates clocks for on-chip peripherals.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Changes in v7:
- Add 'Reviewed-by' tag of Krzysztof Kozlowski

Changes in v6:
- New

 .../bindings/clock/imx8m-clock.yaml           | 27 ++++++++++++++-----
 1 file changed, 21 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
index b23e639e6389..eb2e6e702de9 100644
--- a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
@@ -29,12 +29,12 @@  properties:
     maxItems: 2
 
   clocks:
-    minItems: 6
-    maxItems: 7
+    minItems: 7
+    maxItems: 10
 
   clock-names:
-    minItems: 6
-    maxItems: 7
+    minItems: 7
+    maxItems: 10
 
   '#clock-cells':
     const: 1
@@ -94,6 +94,10 @@  allOf:
             - description: ext2 clock input
             - description: ext3 clock input
             - description: ext4 clock input
+            - description: audio1 PLL input
+            - description: audio2 PLL input
+            - description: dram PLL input
+            - description: video PLL input
 
         clock-names:
           items:
@@ -103,20 +107,31 @@  allOf:
             - const: clk_ext2
             - const: clk_ext3
             - const: clk_ext4
+            - const: audio_pll1
+            - const: audio_pll2
+            - const: dram_pll
+            - const: video_pll
 
 additionalProperties: false
 
 examples:
   # Clock Control Module node:
   - |
+    #include <dt-bindings/clock/imx8mm-clock.h>
+
     clock-controller@30380000 {
         compatible = "fsl,imx8mm-ccm";
         reg = <0x30380000 0x10000>;
         #clock-cells = <1>;
         clocks = <&osc_32k>, <&osc_24m>, <&clk_ext1>, <&clk_ext2>,
-                 <&clk_ext3>, <&clk_ext4>;
+                 <&clk_ext3>, <&clk_ext4>,
+                 <&anatop IMX8MM_ANATOP_AUDIO_PLL1>,
+                 <&anatop IMX8MM_ANATOP_AUDIO_PLL1>,
+                 <&anatop IMX8MM_ANATOP_DRAM_PLL>,
+                 <&anatop IMX8MM_ANATOP_VIDEO_PLL>;
         clock-names = "osc_32k", "osc_24m", "clk_ext1", "clk_ext2",
-                      "clk_ext3", "clk_ext4";
+                      "clk_ext3", "clk_ext4", "audio_pll1", "audio_pll2",
+                      "dram_pll", "video_pll";
         fsl,anatop = <&anatop>;
     };