Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.118.233 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.118.233; helo=mail.nvidia.com; pr=C
From:   Vidya Sagar <vidyas@nvidia.com>
To:     <lpieralisi@kernel.org>, <robh@kernel.org>, <kw@linux.com>,
        <bhelgaas@google.com>, <thierry.reding@gmail.com>,
        <jonathanh@nvidia.com>, <kishon@ti.com>, <vkoul@kernel.org>,
        <mani@kernel.org>, <Sergey.Semin@baikalelectronics.ru>,
        <ffclaire1224@gmail.com>
CC:     <linux-pci@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-phy@lists.infradead.org>,
        <kthota@nvidia.com>, <mmaddireddy@nvidia.com>, <vidyas@nvidia.com>,
        <sagar.tv@gmail.com>
Subject: [PATCH V3 01/21] PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select"
Date:   Fri, 14 Oct 2022 00:08:34 +0530
Message-ID: <20221013183854.21087-2-vidyas@nvidia.com>
In-Reply-To: <20221013183854.21087-1-vidyas@nvidia.com>
References: <20221013183854.21087-1-vidyas@nvidia.com>
MIME-Version: 1.0
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2022 18:39:20.2974
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 5caef5e4-3b86-4085-f550-08daad4a3ded
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT010.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7320
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,
        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: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

The GPIO DT property "nvidia,refclk-select" to select the PCIe reference
clock is optional. Use devm_gpiod_get_optional() to get it.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
V3:
* None

V2:
* None

 drivers/pci/controller/dwc/pcie-tegra194.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 9e64b948f999..d7ab33931de4 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1233,9 +1233,9 @@ static int tegra_pcie_dw_parse_dt(struct tegra_pcie_dw *pcie)
 		return err;
 	}
 
-	pcie->pex_refclk_sel_gpiod = devm_gpiod_get(pcie->dev,
-						    "nvidia,refclk-select",
-						    GPIOD_OUT_HIGH);
+	pcie->pex_refclk_sel_gpiod = devm_gpiod_get_optional(pcie->dev,
+							     "nvidia,refclk-select",
+							     GPIOD_OUT_HIGH);
 	if (IS_ERR(pcie->pex_refclk_sel_gpiod)) {
 		int err = PTR_ERR(pcie->pex_refclk_sel_gpiod);
 		const char *level = KERN_ERR;
-- 
2.17.1