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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2437EC7EE22 for ; Thu, 11 May 2023 11:56:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237711AbjEKL4C (ORCPT ); Thu, 11 May 2023 07:56:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229815AbjEKLz7 (ORCPT ); Thu, 11 May 2023 07:55:59 -0400 Received: from pidgin.makrotopia.org (pidgin.makrotopia.org [185.142.180.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7F612680; Thu, 11 May 2023 04:55:58 -0700 (PDT) Received: from local by pidgin.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1px4tm-0008Rg-01; Thu, 11 May 2023 11:55:57 +0000 Date: Thu, 11 May 2023 13:53:53 +0200 From: Daniel Golle To: Andrew Lunn Cc: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , AngeloGioacchino Del Regno Subject: Re: [PATCH 1/8] net: phy: realtek: rtl8221: allow to configure SERDES mode Message-ID: References: <302d982c5550f10d589735fc2e46cf27386c39f4.1683756691.git.daniel@makrotopia.org> <81c3f04d-ec48-4ac0-ac16-b69dc6ae72e0@lunn.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <81c3f04d-ec48-4ac0-ac16-b69dc6ae72e0@lunn.ch> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 11, 2023 at 02:41:07AM +0200, Andrew Lunn wrote: > > +#define RTL8221B_MMD_SERDES_CTRL MDIO_MMD_VEND1 > > +#define RTL8221B_MMD_PHY_CTRL MDIO_MMD_VEND2 > > I suggest you don't do this. Use MDIO_MMD_VEND[1|2] to make it clear > these are vendor registers. Ack, I will not introduce new macros to label them, but just use MDIO_MMD_VEND1 and MDIO_MMD_VEND2 then. > > > + case RTL8221B_SERDES_OPTION_MODE_2500BASEX_SGMII: > > + case RTL8221B_SERDES_OPTION_MODE_2500BASEX: > > + phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, 0x6a04, 0x0503); > > + phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, 0x6f10, 0xd455); > > + phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, 0x6f11, 0x8020); > > + break; > > + case RTL8221B_SERDES_OPTION_MODE_HISGMII_SGMII: > > + case RTL8221B_SERDES_OPTION_MODE_HISGMII: > > + phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, 0x6a04, 0x0503); > > + phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, 0x6f10, 0xd433); > > + phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, 0x6f11, 0x8020); > > + break; > > + } > > Is there anything in the datasheet to indicate register names and what > the values mean? It would be good to replace these magic values with > #defines. Unfortunately they are only mentioned as magic values which have to be written to magic registers also in the datasheet :(