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 X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F64EC4361B for ; Thu, 10 Dec 2020 02:12:55 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EAA01233EF for ; Thu, 10 Dec 2020 02:12:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAA01233EF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lunn.ch Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2/8DMgs7v2vtmPzEV5+k127fkXChq82Zd+A6UhhxpVk=; b=zqLV/b9QW4PgGr2MI5GdaKC+t xdZG8gXprMvgoxg5J3MBdOrRtzEZDRnrZrEXjOZZQ5VQDpoIV1TPUR/CPi3/KtoYxTYDlFkdH8+o7 LIWcyXDmw1JQh8B0r9oL3g9xOp5O0u1V8Q0pydHq4GzpybIJ2AX4gKUNUR6lbHwXVNCN5N3+HQUXn ChelbYp5cYB97ODbn9j5YwJfGeNvhFtn4ZTaAxJcNTg14v45YGPkPuei6Qxy1EIIRQxAmHY/PFJAN 640B9MzgxR7jR6cv9dqciOtQ7F5ub5hUXHLMooEhMFpSNmsJ5B+46VXhXx/Dqv/g53FvYAqMwXhS2 /lVAqhh7g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1knBQm-0005UK-2P; Thu, 10 Dec 2020 02:11:44 +0000 Received: from vps0.lunn.ch ([185.16.172.187]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1knBQj-0005Tn-3g for linux-arm-kernel@lists.infradead.org; Thu, 10 Dec 2020 02:11:41 +0000 Received: from andrew by vps0.lunn.ch with local (Exim 4.94) (envelope-from ) id 1knBQc-00B9IH-95; Thu, 10 Dec 2020 03:11:34 +0100 Date: Thu, 10 Dec 2020 03:11:34 +0100 From: Andrew Lunn To: Steen Hegelund Subject: Re: [PATCH v9 3/4] phy: Add Sparx5 ethernet serdes PHY driver Message-ID: <20201210021134.GD2638572@lunn.ch> References: <20201207121345.3818234-1-steen.hegelund@microchip.com> <20201207121345.3818234-4-steen.hegelund@microchip.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201207121345.3818234-4-steen.hegelund@microchip.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201209_211141_196349_23088ACF X-CRM114-Status: GOOD ( 17.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bjarni Jonasson , Alexandre Belloni , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Kishon Vijay Abraham I , Vinod Koul , linux-arm-kernel@lists.infradead.org, Microchip UNG Driver List , Lars Povlsen Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig > index 01b53f86004c..f6a094c81e86 100644 > --- a/drivers/phy/Kconfig > +++ b/drivers/phy/Kconfig > @@ -66,9 +66,11 @@ source "drivers/phy/broadcom/Kconfig" > source "drivers/phy/cadence/Kconfig" > source "drivers/phy/freescale/Kconfig" > source "drivers/phy/hisilicon/Kconfig" > +source "drivers/phy/intel/Kconfig" That looks odd. > source "drivers/phy/lantiq/Kconfig" > source "drivers/phy/marvell/Kconfig" > source "drivers/phy/mediatek/Kconfig" > +source "drivers/phy/microchip/Kconfig" > source "drivers/phy/motorola/Kconfig" > source "drivers/phy/mscc/Kconfig" > source "drivers/phy/qualcomm/Kconfig" > @@ -80,7 +82,6 @@ source "drivers/phy/socionext/Kconfig" > source "drivers/phy/st/Kconfig" > source "drivers/phy/tegra/Kconfig" > source "drivers/phy/ti/Kconfig" > -source "drivers/phy/intel/Kconfig" > source "drivers/phy/xilinx/Kconfig" Ah. Please make that a separate patch. > + value = sdx5_rd(priv, SD25G_LANE_CMU_C0(sd_index)); > + value = SD25G_LANE_CMU_C0_PLL_LOL_UDL_GET(value); > + > + if (value) { > + dev_err(macro->priv->dev, "CMU_C0 pll_lol_udl: 0x%x\n", value); > + ret = -EINVAL; > + } > + > + value = sdx5_rd(priv, SD_LANE_25G_SD_LANE_STAT(sd_index)); > + value = SD_LANE_25G_SD_LANE_STAT_PMA_RST_DONE_GET(value); > + > + if (value != 0x1) { > + dev_err(macro->priv->dev, "sd_lane_stat pma_rst_done: 0x%x\n", value); > + ret = -EINVAL; > + } These error messages are not very helpful. Could you be a bit more descriptive. Or do you think there is sufficient black magic in the hardware that nobody outside of Microchip will be able to debug it? > +static int sparx5_serdes_get_serdesmode(phy_interface_t portmode, > + struct phy_configure_opts_eth_serdes *conf) > +{ > + switch (portmode) { > + case PHY_INTERFACE_MODE_1000BASEX: > + if (conf->speed == SPEED_2500) > + return SPX5_SD_MODE_2G5; > + if (conf->speed == SPEED_100) > + return SPX5_SD_MODE_100FX; > + return SPX5_SD_MODE_1000BASEX; Please could you explain this. Why different speeds for 1000BaseX? > + case PHY_INTERFACE_MODE_SGMII: > + return SPX5_SD_MODE_1000BASEX; Here there could be some oddities, depending on how 10Mbps and 100Mbps is implemented. But 1000BASEX only supports 1Gbps. > +static int sparx5_serdes_validate(struct phy *phy, enum phy_mode mode, > + int submode, > + union phy_configure_opts *opts) > +{ > + struct sparx5_serdes_macro *macro = phy_get_drvdata(phy); > + struct sparx5_serdes_private *priv = macro->priv; > + u32 value, analog_sd; > + > + if (mode != PHY_MODE_ETHERNET) > + return -EINVAL; > + > + switch (submode) { > + case PHY_INTERFACE_MODE_1000BASEX: > + case PHY_INTERFACE_MODE_SGMII: > + case PHY_INTERFACE_MODE_QSGMII: > + case PHY_INTERFACE_MODE_10GBASER: > + break; > + default: > + return -EINVAL; > + } > + if (macro->serdestype == SPX5_SDT_6G) { > + value = sdx5_rd(priv, SD6G_LANE_LANE_DF(macro->stpidx)); > + analog_sd = SD6G_LANE_LANE_DF_PMA2PCS_RXEI_FILTERED_GET(value); > + } else if (macro->serdestype == SPX5_SDT_10G) { > + value = sdx5_rd(priv, SD10G_LANE_LANE_DF(macro->stpidx)); > + analog_sd = SD10G_LANE_LANE_DF_PMA2PCS_RXEI_FILTERED_GET(value); > + } else { > + value = sdx5_rd(priv, SD25G_LANE_LANE_DE(macro->stpidx)); > + analog_sd = SD25G_LANE_LANE_DE_LN_PMA_RXEI_GET(value); > + } > + /* Link up is when analog_sd == 0 */ > + return analog_sd; The documentation says: /** * @validate: * * Optional. * * Used to check that the current set of parameters can be * handled by the phy. Implementations are free to tune the * parameters passed as arguments if needed by some * implementation detail or constraints. It must not change * any actual configuration of the PHY, so calling it as many * times as deemed fit by the consumer must have no side * effect. * * Returns: 0 if the configuration can be applied, an negative * error code otherwise */ So why are returning link up information? Andrew _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel