| Message ID | 20170818000220.10005.98781.stgit@tlendack-t1.amdoffice.net |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | David Miller |
| Headers | show
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Thu, 17 Aug 2017 20:02:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector1-amd-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=vQjHERRe9OPkOYaqEyrolFHWorvMEPcchZEdzzatKFM=; b=JPoYvTOyiHwreBQAU6fBmszgH6wTgHx0lod9QN5qy0zldjtRe1EKU6/xNPd1uUfl2addeq+Wrpu/2JAE6G7xr7Zyv3GHwKiaFjS5JcgwW4j7rgQeqsdgAeFwOmjAt/5QfA0qqnJxwb6tuEsXR+ftapG2AEDrLkiPgmXatmAlsTM= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Thomas.Lendacky@amd.com; Received: from tlendack-t1.amdoffice.net (165.204.77.1) by BN6PR12MB1139.namprd12.prod.outlook.com (10.168.226.141) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.1362.18; Fri, 18 Aug 2017 00:02:24 +0000 From: Tom Lendacky <thomas.lendacky@amd.com> Subject: [PATCH net-next v1 02/14] amd-xgbe: Set the MII control width for the MAC interface To: netdev@vger.kernel.org Cc: David Miller <davem@davemloft.net> Date: Thu, 17 Aug 2017 19:02:20 -0500 Message-ID: <20170818000220.10005.98781.stgit@tlendack-t1.amdoffice.net> In-Reply-To: <20170818000201.10005.36182.stgit@tlendack-t1.amdoffice.net> References: <20170818000201.10005.36182.stgit@tlendack-t1.amdoffice.net> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; 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diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h index 9795419..d07edf9 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h @@ -1339,6 +1339,7 @@ #define XGBE_AN_CL37_PCS_MODE_BASEX 0x00 #define XGBE_AN_CL37_PCS_MODE_SGMII 0x04 #define XGBE_AN_CL37_TX_CONFIG_MASK 0x08 +#define XGBE_AN_CL37_MII_CTRL_8BIT 0x0100 /* Bit setting and getting macros * The get macro will extract the current bit field value from within diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c index 8068491..2222bbf8 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c @@ -982,6 +982,8 @@ static void xgbe_an37_init(struct xgbe_prv_data *pdata) break; } + reg |= XGBE_AN_CL37_MII_CTRL_8BIT; + XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL, reg); netif_dbg(pdata, link, pdata->netdev, "CL37 AN (%s) initialized\n",
When running in SGMII mode at speeds below 1000Mbps, the auto-negotition control register must set the MII control width for the MAC interface to be 8-bits wide. By default the width is 4-bits. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> --- drivers/net/ethernet/amd/xgbe/xgbe-common.h | 1 + drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 2 ++ 2 files changed, 3 insertions(+)