From 020a01a6208f5b0613fd8094d446a25e6f0890bb Mon Sep 17 00:00:00 2001
From: Jonathan Hunter <jonathanh@nvidia.com>
Date: Wed, 11 Sep 2019 14:46:01 +0100
Subject: [PATCH] common: overlay: Add common overlay for Jetson

Add the following device-tree overlay templates for the Jetson
platforms.

1. ADAFRUIT SPH0645LM4H (I2S MEMS Microphone)
2. FE-PI Audio Z V2 (SGTL5000 Audio Codec)

Note that these templates cannot be compiled as-is because they include
definitions that are defined in the corresponding
'dt-bindings/platform/jetson/<board>.h'. Therefore, to use these
templates they need to be compiled along with the appropriate include
file.

These have been created to avoid duplicating nodes that are common to
all Jetson platforms for using these add-on modules.

Bug 2414131

Change-Id: I60b29bb72fdd206786fd76cd1676ed6d6f3c9f1b
Signed-off-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2202471
(cherry picked from commit 3ca13ed86364fe2b606e470870ffa778f36a03c9)
Reviewed-on: https://git-master.nvidia.com/r/2217432
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
---
 overlay/jetson-adafruit-sph0645lm4h.dtsi |  49 ++++++++++
 overlay/jetson-fe-pi-audio-z-v2.dts      | 110 +++++++++++++++++++++++
 2 files changed, 159 insertions(+)
 create mode 100644 overlay/jetson-adafruit-sph0645lm4h.dtsi
 create mode 100644 overlay/jetson-fe-pi-audio-z-v2.dts

diff --git a/overlay/jetson-adafruit-sph0645lm4h.dtsi b/overlay/jetson-adafruit-sph0645lm4h.dtsi
new file mode 100644
index 0000000..ae9e832
--- /dev/null
+++ b/overlay/jetson-adafruit-sph0645lm4h.dtsi
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Jetson Device-tree overlay for Adafruit I2S MEMS Microphone Breakout
+ * (SPH0645LM4H).
+ *
+ * Copyright (c) 2019 NVIDIA CORPORATION. All rights reserved.
+ *
+ */
+
+#include <dt-bindings/pinctrl/pinctrl-tegra.h>
+
+/ {
+	overlay-name = "Adafruit SPH0645LM4H";
+	compatible = JETSON_COMPATIBLE;
+
+	fragment@0 {
+		target = <&pinmux>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&hdr40_pinmux>;
+
+			hdr40_pinmux: header-40pin-pinmux {
+				pin12 {
+					nvidia,pins = HDR40_PIN12;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+
+				pin35 {
+					nvidia,pins = HDR40_PIN35;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+
+				pin38 {
+					nvidia,pins = HDR40_PIN38;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_ENABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+			};
+		};
+	};
+};
diff --git a/overlay/jetson-fe-pi-audio-z-v2.dts b/overlay/jetson-fe-pi-audio-z-v2.dts
new file mode 100644
index 0000000..42b579f
--- /dev/null
+++ b/overlay/jetson-fe-pi-audio-z-v2.dts
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Jetson Device-tree overlay for FE-PI Audio Z V2.
+ *
+ * Copyright (c) 2019 NVIDIA CORPORATION. All rights reserved.
+ *
+ */
+
+#include <dt-bindings/pinctrl/pinctrl-tegra.h>
+
+/ {
+	overlay-name = "FE-PI Audio Z V2";
+	compatible = JETSON_COMPATIBLE;
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			clocks {
+				sgtl5000_mclk: sgtl5000_mclk {
+					compatible = "fixed-clock";
+					#clock-cells = <0>;
+					clock-frequency = <12288000>;
+					clock-output-names = "sgtl5000-mclk";
+					status = "okay";
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&hdr40_i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			sgtl5000: sgtl5000@0a {
+				compatible = "fsl,sgtl5000";
+				reg = <0x0a>;
+				clocks = <&sgtl5000_mclk>;
+				micbias-resistor-k-ohms = <2>;
+				micbias-voltage-m-volts = <3000>;
+				VDDA-supply = <&hdr40_vdd_3v3>;
+				VDDIO-supply = <&hdr40_vdd_3v3>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&tegra_sound>;
+		__overlay__ {
+			nvidia,audio-routing =
+				"x Headphone",		"x HP_OUT",
+				"x MIC_IN",		"x Mic";
+		};
+	};
+
+	fragment@3 {
+		target = <&hdr40_snd_link_i2s>;
+		__overlay__ {
+			link-name = "fe-pi-audio-z-v2";
+			codec-dai = <&sgtl5000>;
+			codec-dai-name = "sgtl5000";
+			bitclock-master;
+			frame-master;
+		};
+	};
+
+	fragment@4 {
+		target = <&pinmux>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&hdr40_pinmux>;
+
+			hdr40_pinmux: header-40pin-pinmux {
+				pin12 {
+					nvidia,pins = HDR40_PIN12;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+
+				pin35 {
+					nvidia,pins = HDR40_PIN35;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+
+				pin38 {
+					nvidia,pins = HDR40_PIN38;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_ENABLE>;
+					nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+				};
+
+				pin40 {
+					nvidia,pins = HDR40_PIN40;
+					nvidia,function = HDR40_I2S;
+					nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+					nvidia,tristate = <TEGRA_PIN_DISABLE>;
+					nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+				};
+			};
+		};
+	};
+};