From: Vidya Sagar <vidyas@nvidia.com>
To: <lorenzo.pieralisi@arm.com>, <bhelgaas@google.com>,
<robh+dt@kernel.org>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>, <andrew.murray@arm.com>
Cc: devicetree@vger.kernel.org, mmaddireddy@nvidia.com,
kthota@nvidia.com, gustavo.pimentel@synopsys.com,
linux-kernel@vger.kernel.org, kishon@ti.com,
linux-pci@vger.kernel.org, linux-tegra@vger.kernel.org,
vidyas@nvidia.com, linux-arm-kernel@lists.infradead.org,
sagar.tv@gmail.com
Subject: [PATCH 6/6] arm64: tegra: Add support for PCIe endpoint mode in P2972-0000 platform
Date: Fri, 22 Nov 2019 16:15:05 +0530 [thread overview]
Message-ID: <20191122104505.8986-7-vidyas@nvidia.com> (raw)
In-Reply-To: <20191122104505.8986-1-vidyas@nvidia.com>
Add endpoint mode support for PCIe C5 controller in P2972-0000 platform
with information about supplies, PHY, PERST GPIO and GPIO that controls
PCIe reference clock coming from the host system.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
.../boot/dts/nvidia/tegra194-p2972-0000.dts | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
index 7eb64b816e08..58c3a9677bc8 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
@@ -43,6 +43,19 @@
gpio@c2f0000 {
status = "okay";
+ /*
+ * Change the below node's status to 'okay' when
+ * PCIe C5 controller is enabled to operate in endpoint
+ * to allow REFCLK from the host system to flow into
+ * the controller.
+ */
+ pex-refclk-sel-high {
+ gpio-hog;
+ output-high;
+ gpios = <TEGRA194_AON_GPIO(AA, 5) 0>;
+ label = "pex_refclk_sel_high";
+ status = "disabled";
+ };
};
pwm@c340000 {
@@ -144,6 +157,22 @@
"p2u-5", "p2u-6", "p2u-7";
};
+ pcie_ep@141a0000 {
+ status = "disabled";
+
+ vddio-pex-ctl-supply = <&vdd_1v8ao>;
+
+ nvidia,pex-rst-gpio = <&gpio TEGRA194_MAIN_GPIO(GG, 1)
+ GPIO_ACTIVE_LOW>;
+
+ phys = <&p2u_nvhs_0>, <&p2u_nvhs_1>, <&p2u_nvhs_2>,
+ <&p2u_nvhs_3>, <&p2u_nvhs_4>, <&p2u_nvhs_5>,
+ <&p2u_nvhs_6>, <&p2u_nvhs_7>;
+
+ phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3", "p2u-4",
+ "p2u-5", "p2u-6", "p2u-7";
+ };
+
fan: fan {
compatible = "pwm-fan";
pwms = <&pwm4 0 45334>;
--
2.17.1
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next prev parent reply other threads:[~2019-11-22 10:47 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 10:44 [PATCH 0/6] Add support for PCIe endpoint mode in Tegra194 Vidya Sagar
2019-11-22 10:45 ` [PATCH 1/6] soc/tegra: bpmp: Update ABI header Vidya Sagar
2019-11-22 10:45 ` [PATCH 2/6] dt-bindings: PCI: tegra: Add DT support for PCIe EP nodes in Tegra194 Vidya Sagar
2019-11-22 13:19 ` Thierry Reding
2019-11-25 7:23 ` Vidya Sagar
2019-11-25 7:33 ` Thierry Reding
2019-11-25 11:52 ` Gustavo Pimentel
2019-11-29 13:26 ` Vidya Sagar
2019-12-05 9:57 ` Vidya Sagar
2019-12-04 21:43 ` Rob Herring
2019-11-22 10:45 ` [PATCH 3/6] PCI: tegra: Add support for PCIe endpoint mode " Vidya Sagar
2019-11-26 21:37 ` Bjorn Helgaas
2019-11-29 13:22 ` Vidya Sagar
2019-11-22 10:45 ` [PATCH 4/6] arm64: tegra: Add PCIe endpoint controllers nodes for Tegra194 Vidya Sagar
2019-11-22 10:45 ` [PATCH 5/6] arm64: tegra: Enable GPIO controllers nodes for P2972-0000 platform Vidya Sagar
2019-11-22 13:20 ` Thierry Reding
2019-11-25 6:55 ` Vidya Sagar
2019-11-22 10:45 ` Vidya Sagar [this message]
2019-11-22 13:25 ` [PATCH 6/6] arm64: tegra: Add support for PCIe endpoint mode in " Thierry Reding
2019-11-25 7:00 ` Vidya Sagar
2019-11-25 7:25 ` Thierry Reding
2019-11-25 7:33 ` Vidya Sagar
2019-11-25 7:37 ` Thierry Reding
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