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Wed, 11 Jan 2023 03:05:16 -0800 Received: from rnnvmail202.nvidia.com (10.129.68.7) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Wed, 11 Jan 2023 03:05:16 -0800 Received: from moonraker.nvidia.com (10.127.8.10) by mail.nvidia.com (10.129.68.7) with Microsoft SMTP Server id 15.2.986.36 via Frontend Transport; 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; 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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-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 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-tegra@vger.kernel.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); }