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>
Cc: devicetree@vger.kernel.org, mmaddireddy@nvidia.com,
kthota@nvidia.com, gustavo.pimentel@synopsys.com,
vidyas@nvidia.com, linux-kernel@vger.kernel.org,
mperttunen@nvidia.com, linux-pci@vger.kernel.org,
linux-tegra@vger.kernel.org, digetx@gmail.com, kishon@ti.com,
linux-arm-kernel@lists.infradead.org, sagar.tv@gmail.com
Subject: [PATCH 2/6] arm64: tegra: Add configuration for PCIe C5 sideband signals
Date: Mon, 26 Aug 2019 13:01:39 +0530 [thread overview]
Message-ID: <20190826073143.4582-3-vidyas@nvidia.com> (raw)
In-Reply-To: <20190826073143.4582-1-vidyas@nvidia.com>
Add support to configure PCIe C5's sideband signals PERST# and CLKREQ#
as output and bi-directional signals respectively which unlike other
PCIe controllers sideband signals are not configured by default.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 38 +++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index adebbbf36bd0..3c0cf54f0aab 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -3,8 +3,9 @@
#include <dt-bindings/gpio/tegra194-gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/mailbox/tegra186-hsp.h>
-#include <dt-bindings/reset/tegra194-reset.h>
+#include <dt-bindings/pinctrl/pinctrl-tegra.h>
#include <dt-bindings/power/tegra194-powergate.h>
+#include <dt-bindings/reset/tegra194-reset.h>
#include <dt-bindings/thermal/tegra194-bpmp-thermal.h>
/ {
@@ -130,6 +131,38 @@
};
};
+ pinmux: pinmux@2430000 {
+ compatible = "nvidia,tegra194-pinmux";
+ reg = <0x2430000 0x17000
+ 0xc300000 0x4000>;
+
+ status = "okay";
+
+ pex_rst_c5_out_state: pex_rst_c5_out {
+ pex_rst {
+ nvidia,pins = "pex_l5_rst_n_pgg1";
+ nvidia,schmitt = <TEGRA_PIN_DISABLE>;
+ nvidia,lpdr = <TEGRA_PIN_ENABLE>;
+ nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+ nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>;
+ nvidia,tristate = <TEGRA_PIN_DISABLE>;
+ nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+ };
+ };
+
+ clkreq_c5_bi_dir_state: clkreq_c5_bi_dir {
+ clkreq {
+ nvidia,pins = "pex_l5_clkreq_n_pgg0";
+ nvidia,schmitt = <TEGRA_PIN_DISABLE>;
+ nvidia,lpdr = <TEGRA_PIN_ENABLE>;
+ nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+ nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>;
+ nvidia,tristate = <TEGRA_PIN_DISABLE>;
+ nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+ };
+ };
+ };
+
uarta: serial@3100000 {
compatible = "nvidia,tegra194-uart", "nvidia,tegra20-uart";
reg = <0x03100000 0x40>;
@@ -1365,6 +1398,9 @@
num-viewport = <8>;
linux,pci-domain = <5>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pex_rst_c5_out_state>, <&clkreq_c5_bi_dir_state>;
+
clocks = <&bpmp TEGRA194_CLK_PEX1_CORE_5>,
<&bpmp TEGRA194_CLK_PEX1_CORE_5M>;
clock-names = "core", "core_m";
--
2.17.1
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next prev parent reply other threads:[~2019-08-26 7:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-26 7:31 [PATCH 0/6] PCI: tegra: Enable PCIe C5 controller of Tegra194 in p2972-0000 platform Vidya Sagar
2019-08-26 7:31 ` [PATCH 1/6] dt-bindings: PCI: tegra: Add sideband pins configuration entries Vidya Sagar
2019-08-26 7:31 ` Vidya Sagar [this message]
2019-08-26 7:31 ` [PATCH 3/6] PCI: tegra: Add support to configure sideband pins Vidya Sagar
2019-08-27 15:30 ` Andrew Murray
2019-08-27 15:40 ` Vidya Sagar
2019-08-26 7:31 ` [PATCH 4/6] dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries Vidya Sagar
2019-08-26 7:31 ` [PATCH 5/6] arm64: tegra: Add PCIe slot supply information in p2972-0000 platform Vidya Sagar
2019-08-26 7:31 ` [PATCH 6/6] PCI: tegra: Add support to enable slot regulators Vidya Sagar
2019-08-27 15:47 ` Andrew Murray
2019-08-27 16:24 ` Vidya Sagar
2019-08-27 17:13 ` Andrew Murray
2019-08-28 9:07 ` Thierry Reding
2019-08-28 9:37 ` Andrew Murray
2019-08-28 9:10 ` [PATCH 0/6] PCI: tegra: Enable PCIe C5 controller of Tegra194 in p2972-0000 platform Thierry Reding
2019-08-28 10:04 ` Vidya Sagar
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