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From: Vidya Sagar <vidyas@nvidia.com>
To: Manikanta Maddireddy <mmaddireddy@nvidia.com>,
	"bhelgaas@google.com" <bhelgaas@google.com>,
	"lpieralisi@kernel.org" <lpieralisi@kernel.org>,
	"kwilczynski@kernel.org" <kwilczynski@kernel.org>,
	"mani@kernel.org" <mani@kernel.org>,
	"robh@kernel.org" <robh@kernel.org>,
	"krzk+dt@kernel.org" <krzk+dt@kernel.org>,
	"conor+dt@kernel.org" <conor+dt@kernel.org>,
	"thierry.reding@gmail.com" <thierry.reding@gmail.com>,
	Jon Hunter <jonathanh@nvidia.com>,
	"kishon@kernel.org" <kishon@kernel.org>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"Frank.Li@nxp.com" <Frank.Li@nxp.com>,
	"den@valinux.co.jp" <den@valinux.co.jp>,
	"hongxing.zhu@nxp.com" <hongxing.zhu@nxp.com>,
	"jingoohan1@gmail.com" <jingoohan1@gmail.com>,
	"cassel@kernel.org" <cassel@kernel.org>,
	"18255117159@163.com" <18255117159@163.com>
Cc: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 05/13] PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select"
Date: Fri, 27 Feb 2026 12:33:24 +0000	[thread overview]
Message-ID: <3ffb0a04-8fb3-433e-a040-1f74774110dc@nvidia.com> (raw)
In-Reply-To: <20260223184151.3083221-6-mmaddireddy@nvidia.com>

On 24/02/26 00:11, Manikanta Maddireddy wrote:
> From: Vidya Sagar <vidyas@nvidia.com>
> 
> The GPIO DT property "nvidia,refclk-select" to select the PCIe reference
> clock is optional. Use devm_gpiod_get_optional() to get it.
> 
> Fixes: c57247f940e8 ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
> Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
> Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
> ---
> Changes V5 -> V6: None
> Changes V4 -> V5: Added Fixes tag
> Changes V1 -> V4: 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 9455456028bc..8f69c5c5a099 100644
> --- a/drivers/pci/controller/dwc/pcie-tegra194.c
> +++ b/drivers/pci/controller/dwc/pcie-tegra194.c
> @@ -1170,9 +1170,9 @@ 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;

Reviewed-by: Vidya Sagar <vidyas@nvidia.com>

  reply	other threads:[~2026-02-27 12:33 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-23 18:41 [PATCH v6 00/13] Fixes to pcie-tegra194 driver Manikanta Maddireddy
2026-02-23 18:41 ` [PATCH v6 01/13] PCI: tegra194: Fix polling delay for L2 state Manikanta Maddireddy
2026-02-27 12:32   ` Vidya Sagar
2026-03-02 23:17   ` Bjorn Helgaas
2026-02-23 18:41 ` [PATCH v6 02/13] PCI: tegra194: Refactor LTSSM state polling on surprise down Manikanta Maddireddy
2026-02-27 12:32   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 03/13] PCI: tegra194: Don't force the device into the D0 state before L2 Manikanta Maddireddy
2026-02-27 12:33   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 04/13] PCI: tegra194: Disable PERST IRQ only in Endpoint mode Manikanta Maddireddy
2026-02-27 12:33   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 05/13] PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select" Manikanta Maddireddy
2026-02-27 12:33   ` Vidya Sagar [this message]
2026-02-23 18:41 ` [PATCH v6 06/13] PCI: tegra194: Disable direct speed change for EP Manikanta Maddireddy
2026-02-27 12:33   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 07/13] PCI: tegra194: Set LTR message request before PCIe link up Manikanta Maddireddy
2026-02-27 12:33   ` Vidya Sagar
2026-03-02 23:27   ` Bjorn Helgaas
2026-02-23 18:41 ` [PATCH v6 08/13] PCI: tegra194: Apply pinctrl settings for both PCIe RP and EP Manikanta Maddireddy
2026-02-27 12:34   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 09/13] PCI: tegra194: Allow system suspend when the Endpoint link is not up Manikanta Maddireddy
2026-02-27 12:34   ` Vidya Sagar
2026-03-02 23:30   ` Bjorn Helgaas
2026-02-23 18:41 ` [PATCH v6 10/13] PCI: tegra194: Free up EP resources during remove() Manikanta Maddireddy
2026-02-27 12:34   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 11/13] PCI: tegra194: Use HW version number Manikanta Maddireddy
2026-02-27 12:34   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 12/13] PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on Manikanta Maddireddy
2026-02-27 12:34   ` Vidya Sagar
2026-02-23 18:41 ` [PATCH v6 13/13] PCI: tegra194: Free resources during controller deinitialization Manikanta Maddireddy
2026-02-27 12:34   ` Vidya Sagar
2026-02-27 16:59 ` [PATCH v6 00/13] Fixes to pcie-tegra194 driver Jon Hunter

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