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Wed, 11 Jan 2023 03:05:14 -0800 From: Jon Hunter To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Thierry Reding , Vinod Koul CC: , , , , , Jon Hunter Subject: [PATCH V6 4/6] phy: tegra: xusb: Disable trk clk when not in use Date: Wed, 11 Jan 2023 11:04:48 +0000 Message-ID: <20230111110450.24617-5-jonathanh@nvidia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230111110450.24617-1-jonathanh@nvidia.com> References: <20230111110450.24617-1-jonathanh@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT083:EE_|CY8PR12MB8339:EE_ X-MS-Office365-Filtering-Correlation-Id: 27e1c20b-ac45-480c-5c53-08daf3c3bf10 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230022)(4636009)(39860400002)(396003)(136003)(346002)(376002)(451199015)(40470700004)(36840700001)(46966006)(6666004)(107886003)(36860700001)(2906002)(8676002)(36756003)(5660300002)(8936002)(83380400001)(82740400003)(4326008)(356005)(7636003)(41300700001)(47076005)(478600001)(426003)(336012)(186003)(26005)(82310400005)(70586007)(70206006)(40480700001)(7696005)(1076003)(86362001)(40460700003)(316002)(2616005)(110136005)(54906003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jan 2023 11:05:27.4476 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 27e1c20b-ac45-480c-5c53-08daf3c3bf10 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT083.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB8339 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230111_030533_043092_36DA9C61 X-CRM114-Status: GOOD ( 10.53 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org From: Wayne Chang Pad tracking is a one-time calibration for Tegra186 and Tegra194. Clk should be disabled after calibration. Disable clk after calibration. While at it add 100us delay for HW recording the calibration value. Signed-off-by: Wayne Chang Signed-off-by: Jon Hunter --- V2 -> V6: no changes V1 -> V2: update the commit message drivers/phy/tegra/xusb-tegra186.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c index 6a8bd87cfdbd..c00d14f27ab4 100644 --- a/drivers/phy/tegra/xusb-tegra186.c +++ b/drivers/phy/tegra/xusb-tegra186.c @@ -609,6 +609,10 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl) value &= ~USB2_PD_TRK; padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); + udelay(100); + + clk_disable_unprepare(priv->usb2_trk_clk); + mutex_unlock(&padctl->lock); } @@ -633,8 +637,6 @@ static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl) value |= USB2_PD_TRK; padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); - clk_disable_unprepare(priv->usb2_trk_clk); - mutex_unlock(&padctl->lock); }