From patchwork Tue Oct 10 13:18:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ante Knezic X-Patchwork-Id: 731559 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 EF45345F67 for ; Tue, 10 Oct 2023 13:22:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=helmholz.de header.i=@helmholz.de header.b="sQPA6k9U" Received: from mail.helmholz.de (mail.helmholz.de [217.6.86.34]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B22E9E for ; Tue, 10 Oct 2023 06:22:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=helmholz.de ; s=dkim1; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=QR9Uy3YjqvDZP4x3C/UunGthWTuIw3tiQVWbEJjGiKc=; b=sQPA6k9Ubjy06NrLTV7Zu4T7k7 mtvEwNZJDLsF4G9mPI/9I09CKUv7689Uo9gDd+Koid7snNbkuzV4vIKtbFcb/KD0XXLJrCjIzYspn 1ZhetdqXKC46+Qq2/K+KmxwqV7pupHb67W3tW1EB/zHP8/pumsoYkOXZ1EhBuBCKAdH9QKKi8iAwP 2DEviXuGa6adOXRPy1X+G8y5m/WSNIqcZRPowkulvqhrrDVigVz2Z6MUB8Lo4VJeSQqeAh0BEaZtZ vWy9irru0d68OwQeN8XDMzcC/JxFEle5pg7MeOn/qhveoSf3qbYMO0gICsSIrbxQ4QhuvgQJTR2s4 whbjGNBA==; Received: from [192.168.1.4] (port=20315 helo=SH-EX2013.helmholz.local) by mail.helmholz.de with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (Exim 4.96) (envelope-from ) id 1qqCdX-0001j2-1h; Tue, 10 Oct 2023 15:18:59 +0200 Received: from linuxdev.helmholz.local (192.168.6.7) by SH-EX2013.helmholz.local (192.168.1.4) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Tue, 10 Oct 2023 15:18:58 +0200 From: Ante Knezic To: CC: , , , , , , , , , , , , , , , Ante Knezic Subject: [PATCH net-next 1/2] net:dsa:microchip: add property to select internal RMII reference clock Date: Tue, 10 Oct 2023 15:18:53 +0200 Message-ID: X-Mailer: git-send-email 2.11.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [192.168.6.7] X-ClientProxiedBy: SH-EX2013.helmholz.local (192.168.1.4) To SH-EX2013.helmholz.local (192.168.1.4) X-EXCLAIMER-MD-CONFIG: 2ae5875c-d7e5-4d7e-baa3-654d37918933 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Microchip KSZ8863/KSZ8873 have the ability to select between internal and external RMII reference clock. By default, reference clock needs to be provided via REFCLKI_3 pin. If required, device can be setup to provide RMII clock internally so that REFCLKI_3 pin can be left unconnected. Add a new "microchip,rmii-clk-internal" property which will set RMII clock reference to internal. Signed-off-by: Ante Knezic --- drivers/net/dsa/microchip/ksz8795.c | 4 ++++ drivers/net/dsa/microchip/ksz8795_reg.h | 3 +++ drivers/net/dsa/microchip/ksz_common.c | 3 +++ drivers/net/dsa/microchip/ksz_common.h | 1 + 4 files changed, 11 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index 91aba470fb2f..c5df571153ab 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -1434,6 +1434,10 @@ int ksz8_setup(struct dsa_switch *ds) for (i = 0; i < (dev->info->num_vlans / 4); i++) ksz8_r_vlan_entries(dev, i); + if (ksz_is_ksz88x3(dev) && dev->rmii_clk_internal) + ksz_cfg(dev, KSZ8863_REG_FVID_AND_HOST_MODE, + KSZ8863_PORT3_RMII_CLK_INTERNAL, true); + return ksz8_handle_global_errata(ds); } diff --git a/drivers/net/dsa/microchip/ksz8795_reg.h b/drivers/net/dsa/microchip/ksz8795_reg.h index 7a57c6088f80..0a3fff7d6d32 100644 --- a/drivers/net/dsa/microchip/ksz8795_reg.h +++ b/drivers/net/dsa/microchip/ksz8795_reg.h @@ -22,6 +22,9 @@ #define KSZ8863_GLOBAL_SOFTWARE_RESET BIT(4) #define KSZ8863_PCS_RESET BIT(0) +#define KSZ8863_REG_FVID_AND_HOST_MODE 0xC6 +#define KSZ8863_PORT3_RMII_CLK_INTERNAL BIT(3) + #define REG_SW_CTRL_0 0x02 #define SW_NEW_BACKOFF BIT(7) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 6673122266b7..dc8cf59c6dd9 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -3631,6 +3631,9 @@ int ksz_switch_register(struct ksz_device *dev) } } + dev->rmii_clk_internal = of_property_read_bool(dev->dev->of_node, + "microchip,rmii-clk-internal"); + ret = dsa_register_switch(dev->ds); if (ret) { dev->dev_ops->exit(dev); diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index a4de58847dea..54589736398a 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -157,6 +157,7 @@ struct ksz_device { phy_interface_t compat_interface; bool synclko_125; bool synclko_disable; + bool rmii_clk_internal; struct vlan_table *vlan_cache;