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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 V2 9/9] PCI: tegra194: Calibrate P2U for endpoint mode
Date: Mon, 26 Sep 2022 17:20:38 +0530	[thread overview]
Message-ID: <20220926115038.24727-10-vidyas@nvidia.com> (raw)
In-Reply-To: <20220926115038.24727-1-vidyas@nvidia.com>

Calibrate P2U for endpoint to request UPHY PLL rate change to Gen1 during
initialization.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
V2:
* None

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

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 3e4868ab8416..cfe32a98b2f3 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1078,6 +1078,9 @@ static int tegra_pcie_enable_phy(struct tegra_pcie_dw *pcie)
 		ret = phy_power_on(pcie->phys[i]);
 		if (ret < 0)
 			goto phy_exit;
+
+		if (pcie->of_data->mode == DW_PCIE_EP_TYPE)
+			phy_calibrate(pcie->phys[i]);
 	}
 
 	return 0;
-- 
2.17.1


-- 
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy

WARNING: multiple messages have this Message-ID (diff)
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 V2 9/9] PCI: tegra194: Calibrate P2U for endpoint mode
Date: Mon, 26 Sep 2022 17:20:38 +0530	[thread overview]
Message-ID: <20220926115038.24727-10-vidyas@nvidia.com> (raw)
In-Reply-To: <20220926115038.24727-1-vidyas@nvidia.com>

Calibrate P2U for endpoint to request UPHY PLL rate change to Gen1 during
initialization.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
V2:
* None

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

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 3e4868ab8416..cfe32a98b2f3 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1078,6 +1078,9 @@ static int tegra_pcie_enable_phy(struct tegra_pcie_dw *pcie)
 		ret = phy_power_on(pcie->phys[i]);
 		if (ret < 0)
 			goto phy_exit;
+
+		if (pcie->of_data->mode == DW_PCIE_EP_TYPE)
+			phy_calibrate(pcie->phys[i]);
 	}
 
 	return 0;
-- 
2.17.1


  parent reply	other threads:[~2022-09-26 11:52 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-26 11:50 [PATCH V2 0/9] Enhancements to pcie-tegra194 driver Vidya Sagar
2022-09-26 11:50 ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 1/9] PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select" Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 2/9] PCI: tegra194: Drive CLKREQ signal low explicitly Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 3/9] PCI: tegra194: Fix polling delay for L2 state Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 4/9] PCI: tegra194: Handle errors in BPMP response Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 5/9] PCI: tegra194: Apply pinctrl settings for both PCIe RP and EP Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 6/9] PCI: tegra194: Refactor LTSSM state polling on surprise down Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 18:16   ` Bjorn Helgaas
2022-09-26 18:16     ` Bjorn Helgaas
2022-09-26 11:50 ` [PATCH V2 7/9] PCI: tegra194: Disable direct speed change for EP Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 11:50 ` [PATCH V2 8/9] phy: tegra: p2u: Set ENABLE_L2_EXIT_RATE_CHANGE in calibration Vidya Sagar
2022-09-26 11:50   ` Vidya Sagar
2022-09-26 18:18   ` Bjorn Helgaas
2022-09-26 18:18     ` Bjorn Helgaas
2022-09-26 11:50 ` Vidya Sagar [this message]
2022-09-26 11:50   ` [PATCH V2 9/9] PCI: tegra194: Calibrate P2U for endpoint mode Vidya Sagar

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