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446 lines
13 KiB
Diff
446 lines
13 KiB
Diff
From 1d3aeba25b10d1ed2b5ae4cf0b535d821539a531 Mon Sep 17 00:00:00 2001
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From: Annaliese McDermond <nh6z@nh6z.net>
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Date: Sun, 17 Mar 2019 16:48:36 -0700
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Subject: [PATCH] dtoverlays: Add Support for the UDRC/DRAWS
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Adds a new overlay to support the Northwest Digital Radio
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DRAWS and UDRC HATs. See http://nwdigitalradio.com.
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Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
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---
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arch/arm/boot/dts/overlays/Makefile | 2 +
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arch/arm/boot/dts/overlays/README | 59 ++++++
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arch/arm/boot/dts/overlays/draws-overlay.dts | 200 +++++++++++++++++++
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arch/arm/boot/dts/overlays/udrc-overlay.dts | 128 ++++++++++++
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4 files changed, 389 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/draws-overlay.dts
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create mode 100644 arch/arm/boot/dts/overlays/udrc-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -29,6 +29,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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dionaudio-loco-v2.dtbo \
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dpi18.dtbo \
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dpi24.dtbo \
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+ draws.dtbo \
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dwc-otg.dtbo \
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dwc2.dtbo \
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enc28j60.dtbo \
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@@ -146,6 +147,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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tpm-slb9670.dtbo \
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uart0.dtbo \
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uart1.dtbo \
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+ udrc.dtbo \
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upstream.dtbo \
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upstream-aux-interrupt.dtbo \
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vc4-fkms-v3d.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -531,6 +531,59 @@ Load: dtoverlay=dpi24
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Params: <None>
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+Name: draws
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+Info: Configures the NW Digital Radio DRAWS Hat
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+
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+ The board includes an ADC to measure various board values and also
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+ provides two analog user inputs on the expansion header. The ADC
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+ can be configured for various sample rates and gain values to adjust
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+ the input range. Tables describing the two parameters follow.
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+
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+ ADC Gain Values:
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+ 0 = +/- 6.144V
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+ 1 = +/- 4.096V
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+ 2 = +/- 2.048V
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+ 3 = +/- 1.024V
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+ 4 = +/- 0.512V
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+ 5 = +/- 0.256V
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+ 6 = +/- 0.256V
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+ 7 = +/- 0.256V
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+
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+ ADC Datarate Values:
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+ 0 = 128sps
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+ 1 = 250sps
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+ 2 = 490sps
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+ 3 = 920sps
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+ 4 = 1600sps (default)
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+ 5 = 2400sps
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+ 6 = 3300sps
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+ 7 = 3300sps
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+Load: dtoverlay=draws,<param>=<val>
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+Params: draws_adc_ch4_gain Sets the full scale resolution of the ADCs
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+ input voltage sensor (default 1)
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+
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+ draws_adc_ch4_datarate Sets the datarate of the ADCs input voltage
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+ sensor
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+
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+ draws_adc_ch5_gain Sets the full scale resolution of the ADCs
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+ 5V rail voltage sensor (default 1)
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+
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+ draws_adc_ch5_datarate Sets the datarate of the ADCs 4V rail voltage
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+ sensor
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+
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+ draws_adc_ch6_gain Sets the full scale resolution of the ADCs
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+ AIN2 input (default 2)
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+
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+ draws_adc_ch6_datarate Sets the datarate of the ADCs AIN2 input
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+
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+ draws_adc_ch7_gain Sets the full scale resolution of the ADCs
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+ AIN3 input (default 2)
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+
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+ draws_adc_ch7_datarate Sets the datarate of the ADCs AIN3 input
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+
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+ alsaname Name of the ALSA audio device (default "draws")
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+
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+
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Name: dwc-otg
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Info: Selects the dwc_otg USB controller driver which has fiq support. This
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is the default on all except the Pi Zero which defaults to dwc2.
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@@ -2117,6 +2170,12 @@ Params: txd1_pin GPIO pin
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rxd1_pin GPIO pin for RXD1 (15, 33 or 41 - default 15)
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+Name: udrc
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+Info: Configures the NW Digital Radio UDRC Hat
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+Load: dtoverlay=udrc,<param>=<val>
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+Params: alsaname Name of the ALSA audio device (default "udrc")
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+
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+
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Name: upstream
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Info: Allow usage of downstream .dtb with upstream kernel. Comprises
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vc4-kms-v3d, dwc2 and upstream-aux-interrupt overlays.
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/draws-overlay.dts
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@@ -0,0 +1,200 @@
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+#include <dt-bindings/clock/bcm2835.h>
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+/*
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+ * Device tree overlay for the DRAWS Hardware
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
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+ fragment@0 {
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+ target = <&i2s>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@1 {
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+ target-path = "/";
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+ __overlay__ {
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+ regulators {
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+ compatible = "simple-bus";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ udrc0_ldoin: udrc0_ldoin {
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+ compatible = "regulator-fixed";
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+ regulator-name = "ldoin";
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ regulator-always-on;
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+ };
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+ };
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+
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+ pps: pps {
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+ compatible = "pps-gpio";
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&pps_pins>;
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+ gpios = <&gpio 7 0>;
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&i2c_arm>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ tlv320aic32x4: tlv320aic32x4@18 {
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+ compatible = "ti,tlv320aic32x4";
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+ reg = <0x18>;
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+ #sound-dai-cells = <0>;
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+ status = "okay";
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+
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+ clocks = <&clocks BCM2835_CLOCK_GP0>;
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+ clock-names = "mclk";
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+ assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
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+ assigned-clock-rates = <25000000>;
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+
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
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+
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+ reset-gpios = <&gpio 13 0>;
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+
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+ iov-supply = <&udrc0_ldoin>;
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+ ldoin-supply = <&udrc0_ldoin>;
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+ };
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+
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+ sc16is752: sc16is752@50 {
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+ compatible = "nxp,sc16is752";
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+ reg = <0x50>;
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+ clocks = <&sc16is752_clk>;
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+ interrupt-parent = <&gpio>;
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+ interrupts = <17 2>; /* IRQ_TYPE_EDGE_FALLING */
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+
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&sc16is752_irq>;
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+
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+ sc16is752_clk: sc16is752_clk {
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+ compatible = "fixed-clock";
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+ #clock-cells = <0>;
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+ clock-frequency = <1843200>;
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+ };
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+ };
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+
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+ tla2024: tla2024@48 {
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+ compatible = "ti,ads1015";
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+ reg = <0x48>;
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ adc_ch4: channel@4 {
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+ reg = <4>;
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+ ti,gain = <1>;
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+ ti,datarate = <4>;
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+ };
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+
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+ adc_ch5: channel@5 {
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+ reg = <5>;
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+ ti,gain = <1>;
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+ ti,datarate = <4>;
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+ };
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+
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+ adc_ch6: channel@6 {
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+ reg = <6>;
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+ ti,gain = <2>;
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+ ti,datarate = <4>;
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+ };
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+
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+ adc_ch7: channel@7 {
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+ reg = <7>;
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+ ti,gain = <2>;
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+ ti,datarate = <4>;
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+ };
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+ };
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+ };
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+ };
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+
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+ fragment@3 {
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+ target = <&sound>;
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+ snd: __overlay__ {
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+ compatible = "simple-audio-card";
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+ i2s-controller = <&i2s>;
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+ status = "okay";
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+
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+ simple-audio-card,name = "draws";
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+ simple-audio-card,format = "i2s";
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+
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+ simple-audio-card,bitclock-master = <&dailink0_master>;
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+ simple-audio-card,frame-master = <&dailink0_master>;
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+
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+ simple-audio-card,widgets =
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+ "Line", "Line In",
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+ "Line", "Line Out";
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+
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+ simple-audio-card,routing =
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+ "IN1_R", "Line In",
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+ "IN1_L", "Line In",
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+ "CM_L", "Line In",
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+ "CM_R", "Line In",
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+ "Line Out", "LOR",
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+ "Line Out", "LOL";
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+
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+ dailink0_master: simple-audio-card,cpu {
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+ sound-dai = <&i2s>;
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+ };
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+
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+ simple-audio-card,codec {
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+ sound-dai = <&tlv320aic32x4>;
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+ };
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+ };
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+ };
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+
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+ fragment@4 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ gpclk0_pin: gpclk0_pin {
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+ brcm,pins = <4>;
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+ brcm,function = <4>;
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+ };
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+
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+ aic3204_reset: aic3204_reset {
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+ brcm,pins = <13>;
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+ brcm,function = <1>;
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+ brcm,pull = <1>;
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+ };
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+
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+ aic3204_gpio: aic3204_gpio {
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+ brcm,pins = <26>;
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+ };
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+
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+ sc16is752_irq: sc16is752_irq {
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+ brcm,pins = <17>;
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+ brcm,function = <0>;
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+ brcm,pull = <2>;
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+ };
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+
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+ pps_pins: pps_pins {
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+ brcm,pins = <7>;
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+ brcm,function = <0>;
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+ brcm,pull = <0>;
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+ };
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+ };
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+ };
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+
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+ __overrides__ {
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+ draws_adc_ch4_gain = <&adc_ch4>,"ti,gain:0";
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+ draws_adc_ch4_datarate = <&adc_ch4>,"ti,datarate:0";
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+ draws_adc_ch5_gain = <&adc_ch5>,"ti,gain:0";
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+ draws_adc_ch5_datarate = <&adc_ch5>,"ti,datarate:0";
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+ draws_adc_ch6_gain = <&adc_ch6>,"ti,gain:0";
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+ draws_adc_ch6_datarate = <&adc_ch6>,"ti,datarate:0";
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+ draws_adc_ch7_gain = <&adc_ch7>,"ti,gain:0";
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+ draws_adc_ch7_datarate = <&adc_ch7>,"ti,datarate:0";
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+ alsaname = <&snd>, "simple-audio-card,name";
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+ };
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+};
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/udrc-overlay.dts
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@@ -0,0 +1,128 @@
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+#include <dt-bindings/clock/bcm2835.h>
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+/*
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+ * Device tree overlay for the Universal Digital Radio Controller
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
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+ fragment@0 {
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+ target = <&i2s>;
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+ __overlay__ {
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+ clocks = <&clocks BCM2835_CLOCK_PCM>;
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+ clock-names = "pcm";
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@1 {
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+ target-path = "/";
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+ __overlay__ {
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+ regulators {
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+ compatible = "simple-bus";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ udrc0_ldoin: udrc0_ldoin {
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+ compatible = "regulator-fixed";
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+ regulator-name = "ldoin";
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ regulator-always-on;
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+ };
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&i2c1>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+ clocks = <&clocks BCM2835_CLOCK_VPU>;
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+ clock-frequency = <400000>;
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+
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+ tlv320aic32x4: tlv320aic32x4@18 {
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+ compatible = "ti,tlv320aic32x4";
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+ #sound-dai-cells = <0>;
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+ reg = <0x18>;
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+ status = "okay";
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+
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+ clocks = <&clocks BCM2835_CLOCK_GP0>;
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+ clock-names = "mclk";
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+ assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
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+ assigned-clock-rates = <25000000>;
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+
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
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+
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+ reset-gpios = <&gpio 13 0>;
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+
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+ iov-supply = <&udrc0_ldoin>;
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+ ldoin-supply = <&udrc0_ldoin>;
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+ };
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+ };
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+ };
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+
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+ fragment@3 {
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+ target = <&sound>;
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+ snd: __overlay__ {
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+ compatible = "simple-audio-card";
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+ i2s-controller = <&i2s>;
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+ status = "okay";
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+
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+ simple-audio-card,name = "udrc";
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+ simple-audio-card,format = "i2s";
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+
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+ simple-audio-card,bitclock-master = <&dailink0_master>;
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+ simple-audio-card,frame-master = <&dailink0_master>;
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+
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+ simple-audio-card,widgets =
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+ "Line", "Line In",
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+ "Line", "Line Out";
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+
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+ simple-audio-card,routing =
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+ "IN1_R", "Line In",
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+ "IN1_L", "Line In",
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+ "CM_L", "Line In",
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+ "CM_R", "Line In",
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+ "Line Out", "LOR",
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+ "Line Out", "LOL";
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+
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+ dailink0_master: simple-audio-card,cpu {
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+ sound-dai = <&i2s>;
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+ };
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+
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+ simple-audio-card,codec {
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+ sound-dai = <&tlv320aic32x4>;
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+ };
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+ };
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+ };
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+
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+ fragment@4 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ gpclk0_pin: gpclk0_pin {
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+ brcm,pins = <4>;
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+ brcm,function = <4>;
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+ };
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+
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+ aic3204_reset: aic3204_reset {
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+ brcm,pins = <13>;
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+ brcm,function = <1>;
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+ brcm,pull = <1>;
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+ };
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+
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+ aic3204_gpio: aic3204_gpio {
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+ brcm,pins = <26>;
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+ };
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+ };
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+ };
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+
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+ __overrides__ {
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+ alsaname = <&snd>, "simple-audio-card,name";
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+ };
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+};
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