dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES

[PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES

Posted by Gokul Praveen 2 days, 16 hours ago

For multilink SERDES configurations where each link requires a
different clock frequency, the SERDES provisions an additional
reference clock for PLL1. Hence, document it.

Signed-off-by: Gokul Praveen <g-praveen@ti.com>
---
 Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
index 9af39b33646a..95f536fe861a 100644
--- a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
+++ b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
@@ -34,7 +34,7 @@ properties:
 
   clocks:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
     description:
       PHY input reference clocks - refclk (for PLL0) & pll1_refclk (for PLL1).
       pll1_refclk is optional and used for multi-protocol configurations requiring
@@ -48,6 +48,7 @@ properties:
     items:
       - const: refclk
       - enum: [ pll1_refclk, phy_en_refclk ]
+      - const: pll1_refclk
 
   reg:
     minItems: 1
-- 
2.34.1

Re: [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES

Posted by Krzysztof Kozlowski 1 day, 15 hours ago

On Wed, Jul 22, 2026 at 11:48:31AM +0530, Gokul Praveen wrote:
> For multilink SERDES configurations where each link requires a
> different clock frequency, the SERDES provisions an additional
> reference clock for PLL1. Hence, document it.

The pll1 is already there.

Also, the TI variant does it or cdns one or both?

Best regards,
Krzysztof

Re: [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES

Posted by Gokul Praveen 1 day, 12 hours ago

Hi Krzystzof,

On 23/07/26 12:45, Krzysztof Kozlowski wrote:
> On Wed, Jul 22, 2026 at 11:48:31AM +0530, Gokul Praveen wrote:
>> For multilink SERDES configurations where each link requires a
>> different clock frequency, the SERDES provisions an additional
>> reference clock for PLL1. Hence, document it.
> The pll1 is already there.

Yes, but the existing configuration has a limitation as

it does not allow both pll1 and phy_en_refclk to be used at the same time.

>
> Also, the TI variant does it or cdns one or both?

Both of them.

Best Regards

Gokul Praveen

>
> Best regards,
> Krzysztof
>