* [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES
@ 2026-07-22 6:18 Gokul Praveen
2026-07-23 7:15 ` Krzysztof Kozlowski
0 siblings, 1 reply; 4+ messages in thread
From: Gokul Praveen @ 2026-07-22 6:18 UTC (permalink / raw)
To: conor+dt, devicetree, krzk+dt, linux-kernel, linux-phy,
neil.armstrong, robh, sjakhade, vkoul, yamonkar, g-praveen,
s-vadapalli
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
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES
2026-07-22 6:18 [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES Gokul Praveen
@ 2026-07-23 7:15 ` Krzysztof Kozlowski
2026-07-23 10:15 ` Gokul Praveen
0 siblings, 1 reply; 4+ messages in thread
From: Krzysztof Kozlowski @ 2026-07-23 7:15 UTC (permalink / raw)
To: Gokul Praveen
Cc: conor+dt, devicetree, krzk+dt, linux-kernel, linux-phy,
neil.armstrong, robh, sjakhade, vkoul, yamonkar, s-vadapalli
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES
2026-07-23 7:15 ` Krzysztof Kozlowski
@ 2026-07-23 10:15 ` Gokul Praveen
2026-07-27 9:35 ` Gokul Praveen
0 siblings, 1 reply; 4+ messages in thread
From: Gokul Praveen @ 2026-07-23 10:15 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: conor+dt, devicetree, krzk+dt, linux-kernel, linux-phy,
neil.armstrong, robh, sjakhade, vkoul, yamonkar, s-vadapalli
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
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES
2026-07-23 10:15 ` Gokul Praveen
@ 2026-07-27 9:35 ` Gokul Praveen
0 siblings, 0 replies; 4+ messages in thread
From: Gokul Praveen @ 2026-07-27 9:35 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: conor+dt@kernel.org, devicetree@vger.kernel.org,
krzk+dt@kernel.org, linux-kernel@vger.kernel.org,
linux-phy@lists.infradead.org, neil.armstrong@linaro.org,
robh@kernel.org, sjakhade@cadence.com, vkoul@kernel.org,
yamonkar@cadence.com, Vadapalli, Siddharth
Hi Krzystof,
Hope this clarifies your query.
Best Regards
Gokul Praveen
On 23/07/26 15:45, Gokul Praveen wrote:
> 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
>>
^ permalink raw reply [flat|nested] 4+ messages in thread
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2026-07-22 6:18 [PATCH v6] dt-bindings: phy: cadence-torrent: Update clocks for multilink SERDES Gokul Praveen
2026-07-23 7:15 ` Krzysztof Kozlowski
2026-07-23 10:15 ` Gokul Praveen
2026-07-27 9:35 ` Gokul Praveen
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