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Mon, 29 May 2023 07:20:37 -0500 Received: from xhdharinik40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Mon, 29 May 2023 07:20:33 -0500 From: Harini Katakam To: , , , , , , , , , , , CC: , , , , , Subject: [PATCH net-next v5 2/2] phy: mscc: Add support for RGMII delay configuration Date: Mon, 29 May 2023 17:50:17 +0530 Message-ID: <20230529122017.10620-3-harini.katakam@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230529122017.10620-1-harini.katakam@amd.com> References: <20230529122017.10620-1-harini.katakam@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT040:EE_|SA3PR12MB8802:EE_ X-MS-Office365-Filtering-Correlation-Id: 2058c530-5729-4c36-faaa-08db603f35be X-LD-Processed: 3dd8961f-e488-4e60-8e11-a82d994e183d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: OT/WfUdB5sdQ/lRyAX0ybCXFJ+GT1MqbPeoSzCPJpFZ2xtMPoT54IcDg2/EG2MCl3l73ZUAByRxNCQG3ennfyV+FDlv6JJ7hkRm0vJbSLP15lmralR9HM8wyvpnkhsMWS1QxRAsFxeh84tlo0ZFlP4477wUbfFnJaYLhYsdXLHK41Oacrlb/ghp0P1FG48+KSgm+We8Uwe66J1+nyJbsl0lBWqx7HmQi2PTP2d9o43gihfizArxg5ejcOMpjyoE5yjtLyWGL0xk80lX0oiM2+fa8dTmcN3xqrwIjCYYmKtAzqmBJ7+idLeZRrg1zvID7hMqyM/XX1RqWeDFtevwRhdLpcX9yNm7ZQFRv+UjdNgR2YyeOMkS5yI8RqaQeiOxKqU3j/V5dNPv+y9LYlnbfnYivWSlkQ0SNln8DmJJFkA6M2qkU1mgwucs/0NYwwXU0O5aQBBXXpld/4W2uK3Q8FerjHzbQCY1l+0Nr94L6nHA4N87o/c0ZiC3r/PLiteCFsQdhwvC+OH42mGQq5Hnu2gDMqx7+l2VsNZrXbnwY/AssCNT7OrIrxWFKyswXEiqz6CWkoGhI/6JZVJVjETbITICJlyLAst42O+34LuvG6BUmHvqTywuWpVr6f7QVAPgDIl0fqncLGddNinxHGKhxDOzzJo3pEmDSP9oBOl15Jc5v9e2jinnEN1yvAeLU+bm2Jl5mzl/vjBxqT+u+86z6pt6CG4XGhfObjoBsE9il27naHDZZOn2xR2uayy8rcWQIdgp4zOPvQndtnllOX85e0Q== X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(136003)(39860400002)(396003)(376002)(346002)(451199021)(40470700004)(36840700001)(46966006)(40140700001)(26005)(36860700001)(1076003)(41300700001)(966005)(6666004)(186003)(47076005)(83380400001)(336012)(426003)(2616005)(478600001)(110136005)(40460700003)(54906003)(82740400003)(4326008)(70586007)(921005)(356005)(70206006)(40480700001)(316002)(81166007)(5660300002)(2906002)(8676002)(8936002)(7416002)(44832011)(86362001)(82310400005)(36756003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 May 2023 12:21:20.2565 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2058c530-5729-4c36-faaa-08db603f35be X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT040.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB8802 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767232716634800644?= X-GMAIL-MSGID: =?utf-8?q?1767232716634800644?= Add support for optional rx/tx-internal-delay-ps from devicetree. - When rx/tx-internal-delay-ps is/are specified, these take priority - When either is absent, 1) use 2ns for respective settings if rgmii-id/rxid/txid is/are present 2) use 0.2ns for respective settings if mode is rgmii Signed-off-by: Harini Katakam --- v5: - Rebase on top VSC8501 series, to avoid conflicts - Rename _internal_delay to use vsc86xx, move declaration and simplify format of pointer to above - Acquire DT delay values in vsc85xx_update_rgmii_cntl instead of vsc85xx_config_init to accommodate all VSC phy versions v4: Fix type of rx_delay and tx_delay Reported by Simon Horman and Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202305140248.lh4LUw2j-lkp@intel.com/ v3 - Patch split: - Use rx/tx-internal-delay-ps with phy_get_internal_delay - Change RGMII delay selection precedence - Update commit description and subject everywhere to say RGMII delays instead of RGMII tuning. drivers/net/phy/mscc/mscc_main.c | 35 ++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) diff --git a/drivers/net/phy/mscc/mscc_main.c b/drivers/net/phy/mscc/mscc_main.c index fc074bcc894d..669a4a7a28ce 100644 --- a/drivers/net/phy/mscc/mscc_main.c +++ b/drivers/net/phy/mscc/mscc_main.c @@ -107,6 +107,9 @@ static const struct vsc8531_edge_rate_table edge_table[] = { }; #endif +static const int vsc85xx_internal_delay[] = {200, 800, 1100, 1700, 2000, 2300, + 2600, 3400}; + static int vsc85xx_phy_read_page(struct phy_device *phydev) { return __phy_read(phydev, MSCC_EXT_PAGE_ACCESS); @@ -525,8 +528,12 @@ static int vsc85xx_update_rgmii_cntl(struct phy_device *phydev, u32 rgmii_cntl, { u16 rgmii_rx_delay_pos = ffs(rgmii_rx_delay_mask) - 1; u16 rgmii_tx_delay_pos = ffs(rgmii_tx_delay_mask) - 1; + int delay_size = ARRAY_SIZE(vsc85xx_internal_delay); + struct device *dev = &phydev->mdio.dev; u16 reg_val = 0; u16 mask = 0; + s32 rx_delay; + s32 tx_delay; int rc = 0; /* For traffic to pass, the VSC8502 family needs the RX_CLK disable bit @@ -541,12 +548,28 @@ static int vsc85xx_update_rgmii_cntl(struct phy_device *phydev, u32 rgmii_cntl, if (phy_interface_is_rgmii(phydev)) mask |= rgmii_rx_delay_mask | rgmii_tx_delay_mask; - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID || - phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) - reg_val |= RGMII_CLK_DELAY_2_0_NS << rgmii_rx_delay_pos; - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID || - phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) - reg_val |= RGMII_CLK_DELAY_2_0_NS << rgmii_tx_delay_pos; + rx_delay = phy_get_internal_delay(phydev, dev, vsc85xx_internal_delay, + delay_size, true); + if (rx_delay < 0) { + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID || + phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + rx_delay = RGMII_CLK_DELAY_2_0_NS; + else + rx_delay = RGMII_CLK_DELAY_0_2_NS; + } + + tx_delay = phy_get_internal_delay(phydev, dev, vsc85xx_internal_delay, + delay_size, false); + if (tx_delay < 0) { + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID || + phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + rx_delay = RGMII_CLK_DELAY_2_0_NS; + else + rx_delay = RGMII_CLK_DELAY_0_2_NS; + } + + reg_val |= rx_delay << rgmii_rx_delay_pos; + reg_val |= tx_delay << rgmii_tx_delay_pos; if (mask) rc = phy_modify_paged(phydev, MSCC_PHY_PAGE_EXTENDED_2,