From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1D137C44501 for ; Thu, 9 Jul 2026 15:52:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GRMlo223WK1vJhCGy8/PE42NkVsYFCsHmCK+AI0l5aI=; b=5FvrrrUnuUGPe4/qvnuQZSiA/n H0bFPlvKYTihetsXwu1Wq/19yiQdif/Feiwi97FWm0YL1LDYd4/BWJEl5KXhwixWPVM/AiUqRghuE yu2DFl/AavlWu6O1kKw767fUuccQfrmkAwKvvkyQorZfnQtqt+TNfDMBqWhbqoVugrcKZzkr7zglZ 3M3xQj1aRLgJAS56tnlHEhYHxiELyAs22YloUHF8zuJKD387YrYHMirfV1pXtp3Eny5eRxvgmfw2z imXBtx72CK8tviFLVYnLdbwoG6klSlmr6nplKN5/nDAlf1WXvIocpoT53IDT7/BKqkuzOc5fVynd4 GmPY2/Ng==; 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micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="mqzgQ8eCWAJGP231" Content-Disposition: inline In-Reply-To: <18b1c832-d0ba-4465-90c8-09e7c48becde@ti.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --mqzgQ8eCWAJGP231 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jul 09, 2026 at 03:37:15PM +0530, Praveen, Gokul wrote: > Hi Conor, >=20 > On 08-07-2026 22:09, Conor Dooley wrote: > > On Wed, Jul 08, 2026 at 02:07:24PM +0530, Gokul Praveen wrote: > > > Update the maxItems value of clocks parameter as 3 clocks > > > (refclk,pll1_refclk,phy_en_refclk) are supported. > > >=20 > > > Update the clock-names parameter to support mutilink SERDES configura= tion > > > as the existing enum configuration of the clock-names parameter does = not > > > allow both pll1_refclk and phy_en_refclk to be used at the same time, > > > hence preventing the support for the configuration (refclk,pll1_refc= lk, > > > phy_en_refclk), which is neeed for multilink SERDES usecases. > > >=20 > > > For multilink SERDES configurations where the links require different > > > clock speeds, all 3 clocks(refclk, pll1_refclk and phy_en_refclk) > > > are needed. > > >=20 > > > For example,considering the USXGMII+SGMII multilink SERDES configurat= ion > > > usecase, having only 1 reference clock(refclk) fails because USXGMII > > > requires a clock speed of 156.25 Mhz and SGMII protocol requires an > > > clock speed of 100 Mhz. > > >=20 > > > Since one reference clock(refclk) alone cannot cater to the 2 > > > different clock speed requirements of these protocols, the second > > > input reference clock(pll1_refclk) along with phy_en_refclk > > > is also needed. > > This binding supports 2 devices and the generic compatible. Do all these > > devices have the new refclk? >=20 > Not all of these devices have the new refclk(pll1_refclk), Conor, which is > is why the enum was kept as it is and in these devices multilink serdes > configuration will not be possible due to the limitation of not having the > new refclk(pll1_refclk). In that case, please restrict 3 clocks to only the devices which have them. pw-bot: changes-requested Thanks, Conor. >=20 > However, The intent of this patch is to add multilink serdes support for = the > devices which have the new refclk because the >=20 > earlier clock-names configuration could not support having all the 3 > clocks(refclk, pll1_refclk, phy_en_refclk) in the clock-names, which is > needed for mutlilink serdes configuration configuration. >=20 > Also, Please feel free to ask if you have any other queries, Conor and th= ank > you for this query . >=20 > Thanks and Best Regards >=20 > Gokul Praveen >=20 > > Thanks, > > Conor. > >=20 > > > Signed-off-by: Gokul Praveen > > > --- > > > Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml | 3 = ++- > > > 1 file changed, 2 insertions(+), 1 deletion(-) > > >=20 > > > diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-torren= t.yaml b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml > > > index 9af39b33646a..ac0f625cd76d 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 configura= tions requiring > > > @@ -48,6 +48,7 @@ properties: > > > items: > > > - const: refclk > > > - enum: [ pll1_refclk, phy_en_refclk ] > > > + - const: phy_en_refclk > > > reg: > > > minItems: 1 > > > --=20 > > > 2.34.1 > > >=20 --mqzgQ8eCWAJGP231 Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCak/DnwAKCRB4tDGHoIJi 0n4XAQC5MnC2I5YXHC52d+ueIJB+UAs57axUxbMswrRVlQ4JpgEA/wgE2WC9Nhgs VMzI4rhMq6Yy6RqGA/Uoy3fwULsBgQM= =t+xa -----END PGP SIGNATURE----- --mqzgQ8eCWAJGP231--