From patchwork Thu Nov 9 21:51:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13451800 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EF97938F83; Thu, 9 Nov 2023 21:51:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from pidgin.makrotopia.org (pidgin.makrotopia.org [185.142.180.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56AE8420F; Thu, 9 Nov 2023 13:51:37 -0800 (PST) Received: from local by pidgin.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96.2) (envelope-from ) id 1r1Cvu-0003Vy-0e; Thu, 09 Nov 2023 21:51:26 +0000 Date: Thu, 9 Nov 2023 21:51:22 +0000 From: Daniel Golle To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chunfeng Yun , Vinod Koul , Kishon Vijay Abraham I , Felix Fietkau , John Crispin , Sean Wang , Mark Lee , Lorenzo Bianconi , Matthias Brugger , AngeloGioacchino Del Regno , Andrew Lunn , Heiner Kallweit , Russell King , Alexander Couzens , Daniel Golle , Philipp Zabel , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-phy@lists.infradead.org Subject: [RFC PATCH 3/8] net: pcs: pcs-mtk-lynxi: use 2500Base-X without AN Message-ID: <091e466912f1333bb76d23e95dc6019c9b71645f.1699565880.git.daniel@makrotopia.org> References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Using 2500Base-T SFP modules e.g. on the BananaPi R3 requires manually disabling auto-negotiation, e.g. using ethtool. While a proper fix using SFP quirks is being discussed upstream, bring a work-around to restore user experience to what it was before the switch to the dedicated SGMII PCS driver. Signed-off-by: Daniel Golle --- drivers/net/pcs/pcs-mtk-lynxi.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/net/pcs/pcs-mtk-lynxi.c b/drivers/net/pcs/pcs-mtk-lynxi.c index 8501dd365279b..6204448d8eac6 100644 --- a/drivers/net/pcs/pcs-mtk-lynxi.c +++ b/drivers/net/pcs/pcs-mtk-lynxi.c @@ -92,14 +92,23 @@ static void mtk_pcs_lynxi_get_state(struct phylink_pcs *pcs, struct phylink_link_state *state) { struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); - unsigned int bm, adv; + unsigned int bm, bmsr, adv; /* Read the BMSR and LPA */ regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm); - regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); + bmsr = FIELD_GET(SGMII_BMSR, bm); + + if (state->interface == PHY_INTERFACE_MODE_2500BASEX) { + state->link = !!(bmsr & BMSR_LSTATUS); + state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); + state->speed = SPEED_2500; + state->duplex = DUPLEX_FULL; + + return; + } - phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm), - FIELD_GET(SGMII_LPA, adv)); + regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); + phylink_mii_c22_pcs_decode_state(state, bmsr, FIELD_GET(SGMII_LPA, adv)); } static int mtk_pcs_lynxi_config(struct phylink_pcs *pcs, unsigned int neg_mode, @@ -129,7 +138,8 @@ static int mtk_pcs_lynxi_config(struct phylink_pcs *pcs, unsigned int neg_mode, if (neg_mode & PHYLINK_PCS_NEG_INBAND) sgm_mode |= SGMII_REMOTE_FAULT_DIS; - if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) { + if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED && + interface != PHY_INTERFACE_MODE_2500BASEX) { if (interface == PHY_INTERFACE_MODE_SGMII) sgm_mode |= SGMII_SPEED_DUPLEX_AN; bmcr = BMCR_ANENABLE;