From patchwork Fri Jun 4 14:01:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 12299855 X-Patchwork-Delegate: kuba@kernel.org 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 91B7EC4708F for ; Fri, 4 Jun 2021 14:02:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B47961042 for ; Fri, 4 Jun 2021 14:02:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230502AbhFDOD7 (ORCPT ); Fri, 4 Jun 2021 10:03:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230122AbhFDOD6 (ORCPT ); Fri, 4 Jun 2021 10:03:58 -0400 Received: from mail-ed1-x530.google.com (mail-ed1-x530.google.com [IPv6:2a00:1450:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22F1AC061767; Fri, 4 Jun 2021 07:01:58 -0700 (PDT) Received: by mail-ed1-x530.google.com with SMTP id u24so11243374edy.11; Fri, 04 Jun 2021 07:01:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=7VXZYVDql9Qt/BRQCLNLiT4UcfVnIy1BL5qjD/tlYhI=; b=crrlEbFnIm8IqwZyk3FT8Tmvl80FvdHoCh5U6+HTxWtcRM5O+urcgOo3UHxM0dAFWC UKlD4LsvGeqzT7FhQL0dgYvaE8KROgqhi4CPYpFKvEJ0vLz7VpuEjLhONm+mWV9+ujR5 wzLXnqRv7lzPQvCP7JnxCPf4gKHZlYeru7uN+SlAXQKb9ejY9I1XlddAZdDpRpqAiRct hXxzOBE4qTxAbulOMgdGDwcSXegnb1V9xFSQlMvh7Ch321gZCsuIjhSvBgEi0uKUVH7a 2gijR8p319qJd81yml1MfMAwYAy+q1PvnsEnrir0z3lGk+fl9LY1yAlSlLcfWUMNGQi/ 3IZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=7VXZYVDql9Qt/BRQCLNLiT4UcfVnIy1BL5qjD/tlYhI=; b=PW3AFNiu5ErjSS3F3nGa/pXm1VqB2yO08tsuPIFY/PXL8+ts/B7erDQTm7Uw85oTR8 7ox2/eHQYNuIMw1MKnRzDUofNnWQGNSTrKtKOkBwHBNV1ld5Iue/TNLmmwBJFAI5SUd4 D5afApTRunoyin0rtOrJw4G1hWvkn4OOnOvIUDWQpM7S52UIikTAt2fMNAnv7fnBG8sq AOfjTNLNzssMndRdWROI9GjJInuo1FAixyv3/mwaGBaVGL0WyldMVXwPPJYSwHJ2O8hz J9LMdWdT9qZD3UKg3JAGFN4GRjgrsYUMwHX+GI/iJsY4B5PiUb2e3iOks/+0wmyYBm9n 7e5A== X-Gm-Message-State: AOAM532af/lslCfAmtB1dm1AVnWzPgtMk/qRb/k09/DTqUotKdAN1I3U fRO9FhV7JYL+19+f3Gfzq70= X-Google-Smtp-Source: ABdhPJxyG5JFyFH+HrRWNJPhK8INyjAdKJyTFLu+2dTbquxGAeDV1u220jvCUkATIabwcXg4OikTHw== X-Received: by 2002:aa7:c545:: with SMTP id s5mr4830045edr.113.1622815316660; Fri, 04 Jun 2021 07:01:56 -0700 (PDT) Received: from localhost.localdomain ([188.26.52.84]) by smtp.gmail.com with ESMTPSA id a22sm2804513ejv.67.2021.06.04.07.01.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jun 2021 07:01:56 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" , Rob Herring Cc: devicetree@vger.kernel.org, netdev@vger.kernel.org, Florian Fainelli , Andrew Lunn , Vivien Didelot , Heiner Kallweit , Russell King - ARM Linux admin , Vladimir Oltean Subject: [PATCH v2 net-next 1/4] net: phy: introduce PHY_INTERFACE_MODE_REVRMII Date: Fri, 4 Jun 2021 17:01:48 +0300 Message-Id: <20210604140151.2885611-2-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210604140151.2885611-1-olteanv@gmail.com> References: <20210604140151.2885611-1-olteanv@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Vladimir Oltean The "reverse RMII" protocol name is a personal invention, derived from "reverse MII". Just like MII, RMII is an asymmetric protocol in that a PHY behaves differently than a MAC. In the case of RMII, for example: - the 50 MHz clock signals are either driven by the MAC or by an external oscillator (but never by the PHY). - the PHY can transmit extra in-band control symbols via RXD[1:0] which the MAC is supposed to understand, but a PHY isn't. The "reverse MII" protocol is not standardized either, except for this web document: https://www.eetimes.com/reverse-media-independent-interface-revmii-block-architecture/# In short, it means that the Ethernet controller speaks the 4-bit data parallel protocol from the perspective of a PHY (it acts like a PHY). This might mean that it implements clause 22 compatible registers, although that is optional - the important bit is that its pins can be connected to an MII MAC and it will 'just work'. In this discussion thread: https://lore.kernel.org/netdev/20210201214515.cx6ivvme2tlquge2@skbuf/ we agreed that it would be an abuse of terms to use the "RevMII" name for anything than the 4-bit parallel MII protocol. But since all the same concepts can be applied to the 2-bit Reduced MII protocol as well, here we are introducing a "Reverse RMII" protocol. This means: "behave like an RMII PHY". Signed-off-by: Vladimir Oltean Acked-by: Florian Fainelli --- .../devicetree/bindings/net/ethernet-controller.yaml | 1 + include/linux/phy.h | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/net/ethernet-controller.yaml b/Documentation/devicetree/bindings/net/ethernet-controller.yaml index e8f04687a3e0..d97b561003ed 100644 --- a/Documentation/devicetree/bindings/net/ethernet-controller.yaml +++ b/Documentation/devicetree/bindings/net/ethernet-controller.yaml @@ -68,6 +68,7 @@ properties: - tbi - rev-mii - rmii + - rev-rmii # RX and TX delays are added by the MAC when required - rgmii diff --git a/include/linux/phy.h b/include/linux/phy.h index 852743f07e3e..ed332ac92e25 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -93,6 +93,7 @@ extern const int phy_10gbit_features_array[1]; * @PHY_INTERFACE_MODE_TBI: Ten Bit Interface * @PHY_INTERFACE_MODE_REVMII: Reverse Media Independent Interface * @PHY_INTERFACE_MODE_RMII: Reduced Media Independent Interface + * @PHY_INTERFACE_MODE_REVRMII: Reduced Media Independent Interface in PHY role * @PHY_INTERFACE_MODE_RGMII: Reduced gigabit media-independent interface * @PHY_INTERFACE_MODE_RGMII_ID: RGMII with Internal RX+TX delay * @PHY_INTERFACE_MODE_RGMII_RXID: RGMII with Internal RX delay @@ -126,6 +127,7 @@ typedef enum { PHY_INTERFACE_MODE_TBI, PHY_INTERFACE_MODE_REVMII, PHY_INTERFACE_MODE_RMII, + PHY_INTERFACE_MODE_REVRMII, PHY_INTERFACE_MODE_RGMII, PHY_INTERFACE_MODE_RGMII_ID, PHY_INTERFACE_MODE_RGMII_RXID, @@ -185,6 +187,8 @@ static inline const char *phy_modes(phy_interface_t interface) return "rev-mii"; case PHY_INTERFACE_MODE_RMII: return "rmii"; + case PHY_INTERFACE_MODE_REVRMII: + return "rev-rmii"; case PHY_INTERFACE_MODE_RGMII: return "rgmii"; case PHY_INTERFACE_MODE_RGMII_ID: From patchwork Fri Jun 4 14:01:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 12299857 X-Patchwork-Delegate: kuba@kernel.org 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 894C9C4708F for ; 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Fri, 04 Jun 2021 07:01:57 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" , Rob Herring Cc: devicetree@vger.kernel.org, netdev@vger.kernel.org, Florian Fainelli , Andrew Lunn , Vivien Didelot , Heiner Kallweit , Russell King - ARM Linux admin , Vladimir Oltean Subject: [PATCH v2 net-next 2/4] net: dsa: sja1105: apply RGMII delays based on the fixed-link property Date: Fri, 4 Jun 2021 17:01:49 +0300 Message-Id: <20210604140151.2885611-3-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210604140151.2885611-1-olteanv@gmail.com> References: <20210604140151.2885611-1-olteanv@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Vladimir Oltean The sja1105 driver has an intermediate way of determining whether the RGMII delays should be applied by the PHY or by itself: by looking at the port role (PHY or MAC). The port can be put in the PHY role either explicitly (sja1105,role-phy) or implicitly (fixed-link). We want to deprecate the sja1105,role-phy property, so all that remains is the fixed-link property. Introduce a "fixed_link" array of booleans in the driver, and use that to determine whether RGMII delays must be applied or not. Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli --- drivers/net/dsa/sja1105/sja1105.h | 1 + drivers/net/dsa/sja1105/sja1105_main.c | 28 +++++++++++++------------- 2 files changed, 15 insertions(+), 14 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h index 867cda832e77..3c66e5945cca 100644 --- a/drivers/net/dsa/sja1105/sja1105.h +++ b/drivers/net/dsa/sja1105/sja1105.h @@ -226,6 +226,7 @@ struct sja1105_private { bool rgmii_rx_delay[SJA1105_MAX_NUM_PORTS]; bool rgmii_tx_delay[SJA1105_MAX_NUM_PORTS]; phy_interface_t phy_mode[SJA1105_MAX_NUM_PORTS]; + bool fixed_link[SJA1105_MAX_NUM_PORTS]; bool best_effort_vlan_filtering; unsigned long learn_ena; unsigned long ucast_egress_floods; diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index 84edd054781b..5839c1e0475a 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -799,26 +799,25 @@ static int sja1105_static_config_load(struct sja1105_private *priv, return sja1105_static_config_upload(priv); } -static int sja1105_parse_rgmii_delays(struct sja1105_private *priv, - const struct sja1105_dt_port *ports) +static int sja1105_parse_rgmii_delays(struct sja1105_private *priv) { struct dsa_switch *ds = priv->ds; - int i; + int port; - for (i = 0; i < ds->num_ports; i++) { - if (ports[i].role == XMII_MAC) + for (port = 0; port < ds->num_ports; port++) { + if (!priv->fixed_link[port]) continue; - if (ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_RXID || - ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_ID) - priv->rgmii_rx_delay[i] = true; + if (priv->phy_mode[port] == PHY_INTERFACE_MODE_RGMII_RXID || + priv->phy_mode[port] == PHY_INTERFACE_MODE_RGMII_ID) + priv->rgmii_rx_delay[port] = true; - if (ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_TXID || - ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_ID) - priv->rgmii_tx_delay[i] = true; + if (priv->phy_mode[port] == PHY_INTERFACE_MODE_RGMII_TXID || + priv->phy_mode[port] == PHY_INTERFACE_MODE_RGMII_ID) + priv->rgmii_tx_delay[port] = true; - if ((priv->rgmii_rx_delay[i] || priv->rgmii_tx_delay[i]) && - !priv->info->setup_rgmii_delay) + if ((priv->rgmii_rx_delay[port] || priv->rgmii_tx_delay[port]) && + !priv->info->setup_rgmii_delay) return -EINVAL; } return 0; @@ -867,6 +866,7 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv, /* phy-handle is missing, but fixed-link isn't. * So it's a fixed link. Default to PHY role. */ + priv->fixed_link[index] = true; ports[index].role = XMII_PHY; } else { /* phy-handle present => put port in MAC role */ @@ -3021,7 +3021,7 @@ static int sja1105_setup(struct dsa_switch *ds) /* Error out early if internal delays are required through DT * and we can't apply them. */ - rc = sja1105_parse_rgmii_delays(priv, ports); + rc = sja1105_parse_rgmii_delays(priv); if (rc < 0) { dev_err(ds->dev, "RGMII delay not supported\n"); return rc; From patchwork Fri Jun 4 14:01:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 12299859 X-Patchwork-Delegate: kuba@kernel.org 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 E611EC07E94 for ; Fri, 4 Jun 2021 14:03:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CD2716140B for ; Fri, 4 Jun 2021 14:03:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231208AbhFDOEt (ORCPT ); Fri, 4 Jun 2021 10:04:49 -0400 Received: from mail-ed1-f48.google.com ([209.85.208.48]:34599 "EHLO mail-ed1-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230234AbhFDOEq (ORCPT ); Fri, 4 Jun 2021 10:04:46 -0400 Received: by mail-ed1-f48.google.com with SMTP id cb9so11314161edb.1; Fri, 04 Jun 2021 07:02:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ATTEBnkS8247ZxltsEDem/zatVT8czV8mG1/GhKPjpk=; b=ARDDDo9rgDhkQK/pSYHxA1ao399eEAefxkxYkhoijM5Euf3qo8Lp6etmsNjqdSQoju utMGZzHZU80o3mT+kqFHi3zP6Nd1kSKBPkQhaxpcMgiDSKZ/HJ0cXRVhL+0pHeXIKqD6 kT/zGre0XbGkABkT+sfONkAQ4z47Is1NJIU7Tcns1mGu1QGYgdwcV4dcwPm8Zil6jQQX 6hQB1L/jKEm8G5KKoMAy8wReyMav/fxSpDajdbBGb7d7u6eAnwdUAES9U7HQFXWH1J7V 3FnLeH1JeTZS9RitVGUmEHmfwtCCAKVHj/Yvz+02VWXoxMtcsKE5VvIQ0iaUbsVw8SnU tJUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ATTEBnkS8247ZxltsEDem/zatVT8czV8mG1/GhKPjpk=; b=nQt/i8NcngmeDEkOlS1ITPSzHSCbIt5OOiCv2nA57LzUO2PQqscffEjfrghgFWkxGj cNBJuNhIjDU0SKWICPUZcpM0F5tHvBF1292sGPwQDGtV9zR+BPnVl8SFQx8qIkxkEqpR sYZbbeVm5+z7Mj+4aj3N7RZnIF44LifOjJYvYeej/hEUWEIqyPkW4stsGiXrjhR7Lmer nDpng6olwqzY6NeS0lyVWqtC4VTfUVtJbgxB+g6o5PTBUhelH7xsicStoFLOOWXI52bY xKwvYcxW3HwUJlQq/df2DK4ZGQry9hMM/0hOItGuqXqdttVQydAC6MOnPXyR1xwE2ChU Vmpg== X-Gm-Message-State: AOAM533RtM2Ear6Hnc/dX2S4wYPR2RqtlUyDra8870I7xRP3aG0KwDaz pvVpJhFfOkdJxfSyzhDdTTbzYETzz60= X-Google-Smtp-Source: ABdhPJykp8uME9Kfkr0nRiH8COUbGAFklB4wBqjosLg7kyeU22g+gAgEMUmYIpyKx5guaYXf8E2klg== X-Received: by 2002:aa7:d6cc:: with SMTP id x12mr4855931edr.55.1622815319140; Fri, 04 Jun 2021 07:01:59 -0700 (PDT) Received: from localhost.localdomain ([188.26.52.84]) by smtp.gmail.com with ESMTPSA id a22sm2804513ejv.67.2021.06.04.07.01.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jun 2021 07:01:58 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" , Rob Herring Cc: devicetree@vger.kernel.org, netdev@vger.kernel.org, Florian Fainelli , Andrew Lunn , Vivien Didelot , Heiner Kallweit , Russell King - ARM Linux admin , Vladimir Oltean Subject: [PATCH v2 net-next 3/4] net: dsa: sja1105: determine PHY/MAC role from PHY interface type Date: Fri, 4 Jun 2021 17:01:50 +0300 Message-Id: <20210604140151.2885611-4-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210604140151.2885611-1-olteanv@gmail.com> References: <20210604140151.2885611-1-olteanv@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Vladimir Oltean Now that both RevMII as well as RevRMII exist, we can deprecate the sja1105,role-mac and sja1105,role-phy properties and simply let the user select that a port operates in MII PHY role by using phy-mode = "rev-mii"; or in RMII PHY role by using phy-mode = "rev-rmii"; There are no fixed-link MII or RMII properties in mainline device trees, and the setup itself is fairly uncommon, so there shouldn't be risks of breaking compatibility. Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli --- .../devicetree/bindings/net/dsa/sja1105.txt | 37 +---------- drivers/net/dsa/sja1105/sja1105_main.c | 64 ++++++------------- 2 files changed, 19 insertions(+), 82 deletions(-) diff --git a/Documentation/devicetree/bindings/net/dsa/sja1105.txt b/Documentation/devicetree/bindings/net/dsa/sja1105.txt index 13fd21074d48..dcf3b2c1d26b 100644 --- a/Documentation/devicetree/bindings/net/dsa/sja1105.txt +++ b/Documentation/devicetree/bindings/net/dsa/sja1105.txt @@ -19,37 +19,6 @@ Required properties: of support for RGMII internal delays (supported on P/Q/R/S, but not on E/T). -Optional properties: - -- sja1105,role-mac: -- sja1105,role-phy: - Boolean properties that can be assigned under each port node. By - default (unless otherwise specified) a port is configured as MAC if it - is driving a PHY (phy-handle is present) or as PHY if it is PHY-less - (fixed-link specified, presumably because it is connected to a MAC). - The effect of this property (in either its implicit or explicit form) - is: - - In the case of MII or RMII it specifies whether the SJA1105 port is a - clock source or sink for this interface (not applicable for RGMII - where there is a Tx and an Rx clock). - - In the case of RGMII it affects the behavior regarding internal - delays: - 1. If sja1105,role-mac is specified, and the phy-mode property is one - of "rgmii-id", "rgmii-txid" or "rgmii-rxid", then the entity - designated to apply the delay/clock skew necessary for RGMII - is the PHY. The SJA1105 MAC does not apply any internal delays. - 2. If sja1105,role-phy is specified, and the phy-mode property is one - of the above, the designated entity to apply the internal delays - is the SJA1105 MAC (if hardware-supported). This is only supported - by the second-generation (P/Q/R/S) hardware. On a first-generation - E or T device, it is an error to specify an RGMII phy-mode other - than "rgmii" for a port that is in fixed-link mode. In that case, - the clock skew must either be added by the MAC at the other end of - the fixed-link, or by PCB serpentine traces on the board. - These properties are required, for example, in the case where SJA1105 - ports are at both ends of a MII/RMII PHY-less setup. One end would need - to have sja1105,role-mac, while the other sja1105,role-phy. - See Documentation/devicetree/bindings/net/dsa/dsa.txt for the list of standard DSA required and optional properties. @@ -87,7 +56,6 @@ arch/arm/boot/dts/ls1021a-tsn.dts: phy-handle = <&rgmii_phy6>; phy-mode = "rgmii-id"; reg = <0>; - /* Implicit "sja1105,role-mac;" */ }; port@1 { /* ETH2 written on chassis */ @@ -95,7 +63,6 @@ arch/arm/boot/dts/ls1021a-tsn.dts: phy-handle = <&rgmii_phy3>; phy-mode = "rgmii-id"; reg = <1>; - /* Implicit "sja1105,role-mac;" */ }; port@2 { /* ETH3 written on chassis */ @@ -103,7 +70,6 @@ arch/arm/boot/dts/ls1021a-tsn.dts: phy-handle = <&rgmii_phy4>; phy-mode = "rgmii-id"; reg = <2>; - /* Implicit "sja1105,role-mac;" */ }; port@3 { /* ETH4 written on chassis */ @@ -111,14 +77,13 @@ arch/arm/boot/dts/ls1021a-tsn.dts: label = "swp4"; phy-mode = "rgmii-id"; reg = <3>; - /* Implicit "sja1105,role-mac;" */ }; port@4 { /* Internal port connected to eth2 */ ethernet = <&enet2>; phy-mode = "rgmii"; reg = <4>; - /* Implicit "sja1105,role-phy;" */ + fixed-link { speed = <1000>; full-duplex; diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index 5839c1e0475a..cbce6e90dc63 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -57,14 +57,6 @@ static bool sja1105_can_forward(struct sja1105_l2_forwarding_entry *l2_fwd, return !!(l2_fwd[from].reach_port & BIT(to)); } -/* Structure used to temporarily transport device tree - * settings into sja1105_setup - */ -struct sja1105_dt_port { - phy_interface_t phy_mode; - sja1105_mii_role_t role; -}; - static int sja1105_init_mac_settings(struct sja1105_private *priv) { struct sja1105_mac_config_entry default_mac = { @@ -143,8 +135,7 @@ static int sja1105_init_mac_settings(struct sja1105_private *priv) return 0; } -static int sja1105_init_mii_settings(struct sja1105_private *priv, - struct sja1105_dt_port *ports) +static int sja1105_init_mii_settings(struct sja1105_private *priv) { struct device *dev = &priv->spidev->dev; struct sja1105_xmii_params_entry *mii; @@ -171,16 +162,24 @@ static int sja1105_init_mii_settings(struct sja1105_private *priv, mii = table->entries; for (i = 0; i < ds->num_ports; i++) { + sja1105_mii_role_t role = XMII_MAC; + if (dsa_is_unused_port(priv->ds, i)) continue; - switch (ports[i].phy_mode) { + switch (priv->phy_mode[i]) { + case PHY_INTERFACE_MODE_REVMII: + role = XMII_PHY; + fallthrough; case PHY_INTERFACE_MODE_MII: if (!priv->info->supports_mii[i]) goto unsupported; mii->xmii_mode[i] = XMII_MODE_MII; break; + case PHY_INTERFACE_MODE_REVRMII: + role = XMII_PHY; + fallthrough; case PHY_INTERFACE_MODE_RMII: if (!priv->info->supports_rmii[i]) goto unsupported; @@ -211,24 +210,11 @@ static int sja1105_init_mii_settings(struct sja1105_private *priv, unsupported: default: dev_err(dev, "Unsupported PHY mode %s on port %d!\n", - phy_modes(ports[i].phy_mode), i); + phy_modes(priv->phy_mode[i]), i); return -EINVAL; } - /* Even though the SerDes port is able to drive SGMII autoneg - * like a PHY would, from the perspective of the XMII tables, - * the SGMII port should always be put in MAC mode. - * Similarly, RGMII is a symmetric protocol electrically - * speaking, and the 'RGMII PHY' role does not mean anything to - * hardware. Just keep the 'PHY role' notation relevant to the - * driver to mean 'the switch port should apply RGMII delays', - * but unconditionally put the port in the MAC role. - */ - if (ports[i].phy_mode == PHY_INTERFACE_MODE_SGMII || - phy_interface_mode_is_rgmii(ports[i].phy_mode)) - mii->phy_mac[i] = XMII_MAC; - else - mii->phy_mac[i] = ports[i].role; + mii->phy_mac[i] = role; } return 0; } @@ -751,8 +737,7 @@ static int sja1105_init_l2_policing(struct sja1105_private *priv) return 0; } -static int sja1105_static_config_load(struct sja1105_private *priv, - struct sja1105_dt_port *ports) +static int sja1105_static_config_load(struct sja1105_private *priv) { int rc; @@ -767,7 +752,7 @@ static int sja1105_static_config_load(struct sja1105_private *priv, rc = sja1105_init_mac_settings(priv); if (rc < 0) return rc; - rc = sja1105_init_mii_settings(priv, ports); + rc = sja1105_init_mii_settings(priv); if (rc < 0) return rc; rc = sja1105_init_static_fdb(priv); @@ -824,7 +809,6 @@ static int sja1105_parse_rgmii_delays(struct sja1105_private *priv) } static int sja1105_parse_ports_node(struct sja1105_private *priv, - struct sja1105_dt_port *ports, struct device_node *ports_node) { struct device *dev = &priv->spidev->dev; @@ -853,7 +837,6 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv, of_node_put(child); return -ENODEV; } - ports[index].phy_mode = phy_mode; phy_node = of_parse_phandle(child, "phy-handle", 0); if (!phy_node) { @@ -867,27 +850,17 @@ static int sja1105_parse_ports_node(struct sja1105_private *priv, * So it's a fixed link. Default to PHY role. */ priv->fixed_link[index] = true; - ports[index].role = XMII_PHY; } else { - /* phy-handle present => put port in MAC role */ - ports[index].role = XMII_MAC; of_node_put(phy_node); } - /* The MAC/PHY role can be overridden with explicit bindings */ - if (of_property_read_bool(child, "sja1105,role-mac")) - ports[index].role = XMII_MAC; - else if (of_property_read_bool(child, "sja1105,role-phy")) - ports[index].role = XMII_PHY; - priv->phy_mode[index] = phy_mode; } return 0; } -static int sja1105_parse_dt(struct sja1105_private *priv, - struct sja1105_dt_port *ports) +static int sja1105_parse_dt(struct sja1105_private *priv) { struct device *dev = &priv->spidev->dev; struct device_node *switch_node = dev->of_node; @@ -902,7 +875,7 @@ static int sja1105_parse_dt(struct sja1105_private *priv, return -ENODEV; } - rc = sja1105_parse_ports_node(priv, ports, ports_node); + rc = sja1105_parse_ports_node(priv, ports_node); of_node_put(ports_node); return rc; @@ -3008,11 +2981,10 @@ static const struct dsa_8021q_ops sja1105_dsa_8021q_ops = { */ static int sja1105_setup(struct dsa_switch *ds) { - struct sja1105_dt_port ports[SJA1105_MAX_NUM_PORTS]; struct sja1105_private *priv = ds->priv; int rc; - rc = sja1105_parse_dt(priv, ports); + rc = sja1105_parse_dt(priv); if (rc < 0) { dev_err(ds->dev, "Failed to parse DT: %d\n", rc); return rc; @@ -3033,7 +3005,7 @@ static int sja1105_setup(struct dsa_switch *ds) return rc; } /* Create and send configuration down to device */ - rc = sja1105_static_config_load(priv, ports); + rc = sja1105_static_config_load(priv); if (rc < 0) { dev_err(ds->dev, "Failed to load static config: %d\n", rc); goto out_ptp_clock_unregister; From patchwork Fri Jun 4 14:01:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 12299861 X-Patchwork-Delegate: kuba@kernel.org 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 CA12DC47083 for ; Fri, 4 Jun 2021 14:03:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5DD3613FF for ; Fri, 4 Jun 2021 14:03:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231218AbhFDOEv (ORCPT ); Fri, 4 Jun 2021 10:04:51 -0400 Received: from mail-ed1-f50.google.com ([209.85.208.50]:33605 "EHLO mail-ed1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231172AbhFDOEr (ORCPT ); Fri, 4 Jun 2021 10:04:47 -0400 Received: by mail-ed1-f50.google.com with SMTP id f5so6270881eds.0; Fri, 04 Jun 2021 07:03:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=CdwRMB28kWkqo/GirWTGo187wSfdCIuXbPUz3JKOzRk=; b=RsS2vaKlFfWrKaaTaCnFK0aFrlYXJQDthsaAr2yK5NXmRT+yEX1Vq1tUciL9qFjmYD l5jXpYT0eGK9HAS2IUfYQbH9W2OZCsUfYb74yWS0szkj1V2SqEeVtoymBgGhcBBvpoch 1KWXQ5VnpLOwYUM6j1DCebJqh0cyVwHAvZNh6PmLIQ/TEbGQQCIYEykgvcvz7UxVAqGH hKs37GfLg/zRBbrwPq9nvAsWlG2ERuWqGj0HAdofTbC7O7O5dgK3fpUQly5GuUt97VbU RJInx/wk15Dv34vXqdQED9w5Wz36BQc/UR2xHZlUHlTk6h/WK3QQ7ScA2ee9oB/s5pq2 rkAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=CdwRMB28kWkqo/GirWTGo187wSfdCIuXbPUz3JKOzRk=; b=hAtVCS0skd/K3ORi9ru4WuU5+sQfvFQdBAyoJHzF4l8hofiia8kQGmoE/l1GIAzjOw kfjDCG6K8gxZz3N8blx0rJIcr+fckg5v4uPpMuuqZimo5ygFvreAexeyVfceC9ymc6Bi NbHEAFl6xfgqoHRzvgPMsLvnW2T1Fjb27RIw0rlzl/BktQQn2ATxY1ScFvFMXHFFjMVV N8Rf2zQiZOSR25ze8gZh7tthewelUV2jOAmkHDtksxyMomX8BVhY63kCGw1F4nzH+yQY SkEaPLAzB0scercyXtAhUkj8iWkMkkuwthfXZrynnVmKaSdz9Mh4Vf5Vi86jjRABHoc+ wO1Q== X-Gm-Message-State: AOAM5304XHj78xcpV3z3iy+2Dg51Afrh0tJRGmbIlhcdZL3xuJjD8+zg PUmLOIyXnAOSM+LE292X1W1ry/besfk= X-Google-Smtp-Source: ABdhPJyuqQdSu1dhzxXcW1rDdvbggDHZCAL34ldPk2FHQFYOFOFFvU/N5NsBuxfzXP+4x5SLDRAtLg== X-Received: by 2002:aa7:dc4c:: with SMTP id g12mr4951565edu.258.1622815320231; Fri, 04 Jun 2021 07:02:00 -0700 (PDT) Received: from localhost.localdomain ([188.26.52.84]) by smtp.gmail.com with ESMTPSA id a22sm2804513ejv.67.2021.06.04.07.01.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jun 2021 07:01:59 -0700 (PDT) From: Vladimir Oltean To: Jakub Kicinski , "David S. Miller" , Rob Herring Cc: devicetree@vger.kernel.org, netdev@vger.kernel.org, Florian Fainelli , Andrew Lunn , Vivien Didelot , Heiner Kallweit , Russell King - ARM Linux admin , Vladimir Oltean Subject: [PATCH v2 net-next 4/4] dt-bindings: net: dsa: sja1105: convert to YAML schema Date: Fri, 4 Jun 2021 17:01:51 +0300 Message-Id: <20210604140151.2885611-5-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210604140151.2885611-1-olteanv@gmail.com> References: <20210604140151.2885611-1-olteanv@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Vladimir Oltean Since the sja1105 driver no longer has any custom device tree properties, the conversion is trivial. Signed-off-by: Vladimir Oltean --- .../bindings/net/dsa/nxp,sja1105.yaml | 89 +++++++++++++ .../devicetree/bindings/net/dsa/sja1105.txt | 121 ------------------ 2 files changed, 89 insertions(+), 121 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml delete mode 100644 Documentation/devicetree/bindings/net/dsa/sja1105.txt diff --git a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml new file mode 100644 index 000000000000..d6ac9a0c1b04 --- /dev/null +++ b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml @@ -0,0 +1,89 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/dsa/nxp,sja1105.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP SJA1105 Automotive Ethernet Switch Family Device Tree Bindings + +description: + The SJA1105 SPI interface requires a CS-to-CLK time (t2 in UM10944.pdf) of at + least one half of t_CLK. At an SPI frequency of 1MHz, this means a minimum + cs_sck_delay of 500ns. Ensuring that this SPI timing requirement is observed + depends on the SPI bus master driver. + +allOf: + - $ref: "dsa.yaml#" + +maintainers: + - Vladimir Oltean + +properties: + compatible: + enum: + - nxp,sja1105e + - nxp,sja1105t + - nxp,sja1105p + - nxp,sja1105q + - nxp,sja1105r + - nxp,sja1105s + + reg: + maxItems: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + ethernet-switch@1 { + reg = <0x1>; + compatible = "nxp,sja1105t"; + + ethernet-ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + phy-handle = <&rgmii_phy6>; + phy-mode = "rgmii-id"; + reg = <0>; + }; + + port@1 { + phy-handle = <&rgmii_phy3>; + phy-mode = "rgmii-id"; + reg = <1>; + }; + + port@2 { + phy-handle = <&rgmii_phy4>; + phy-mode = "rgmii-id"; + reg = <2>; + }; + + port@3 { + phy-mode = "rgmii-id"; + reg = <3>; + }; + + port@4 { + ethernet = <&enet2>; + phy-mode = "rgmii"; + reg = <4>; + + fixed-link { + speed = <1000>; + full-duplex; + }; + }; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/net/dsa/sja1105.txt b/Documentation/devicetree/bindings/net/dsa/sja1105.txt deleted file mode 100644 index dcf3b2c1d26b..000000000000 --- a/Documentation/devicetree/bindings/net/dsa/sja1105.txt +++ /dev/null @@ -1,121 +0,0 @@ -NXP SJA1105 switch driver -========================= - -Required properties: - -- compatible: - Must be one of: - - "nxp,sja1105e" - - "nxp,sja1105t" - - "nxp,sja1105p" - - "nxp,sja1105q" - - "nxp,sja1105r" - - "nxp,sja1105s" - - Although the device ID could be detected at runtime, explicit bindings - are required in order to be able to statically check their validity. - For example, SGMII can only be specified on port 4 of R and S devices, - and the non-SGMII devices, while pin-compatible, are not equal in terms - of support for RGMII internal delays (supported on P/Q/R/S, but not on - E/T). - -See Documentation/devicetree/bindings/net/dsa/dsa.txt for the list of standard -DSA required and optional properties. - -Other observations ------------------- - -The SJA1105 SPI interface requires a CS-to-CLK time (t2 in UM10944) of at least -one half of t_CLK. At an SPI frequency of 1MHz, this means a minimum -cs_sck_delay of 500ns. Ensuring that this SPI timing requirement is observed -depends on the SPI bus master driver. - -Example -------- - -Ethernet switch connected via SPI to the host, CPU port wired to enet2: - -arch/arm/boot/dts/ls1021a-tsn.dts: - -/* SPI controller of the LS1021 */ -&dspi0 { - sja1105@1 { - reg = <0x1>; - #address-cells = <1>; - #size-cells = <0>; - compatible = "nxp,sja1105t"; - spi-max-frequency = <4000000>; - fsl,spi-cs-sck-delay = <1000>; - fsl,spi-sck-cs-delay = <1000>; - ports { - #address-cells = <1>; - #size-cells = <0>; - port@0 { - /* ETH5 written on chassis */ - label = "swp5"; - phy-handle = <&rgmii_phy6>; - phy-mode = "rgmii-id"; - reg = <0>; - }; - port@1 { - /* ETH2 written on chassis */ - label = "swp2"; - phy-handle = <&rgmii_phy3>; - phy-mode = "rgmii-id"; - reg = <1>; - }; - port@2 { - /* ETH3 written on chassis */ - label = "swp3"; - phy-handle = <&rgmii_phy4>; - phy-mode = "rgmii-id"; - reg = <2>; - }; - port@3 { - /* ETH4 written on chassis */ - phy-handle = <&rgmii_phy5>; - label = "swp4"; - phy-mode = "rgmii-id"; - reg = <3>; - }; - port@4 { - /* Internal port connected to eth2 */ - ethernet = <&enet2>; - phy-mode = "rgmii"; - reg = <4>; - - fixed-link { - speed = <1000>; - full-duplex; - }; - }; - }; - }; -}; - -/* MDIO controller of the LS1021 */ -&mdio0 { - /* BCM5464 */ - rgmii_phy3: ethernet-phy@3 { - reg = <0x3>; - }; - rgmii_phy4: ethernet-phy@4 { - reg = <0x4>; - }; - rgmii_phy5: ethernet-phy@5 { - reg = <0x5>; - }; - rgmii_phy6: ethernet-phy@6 { - reg = <0x6>; - }; -}; - -/* Ethernet master port of the LS1021 */ -&enet2 { - phy-connection-type = "rgmii"; - status = "ok"; - fixed-link { - speed = <1000>; - full-duplex; - }; -};