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openwrt/target/linux/brcm2708/patches-4.19/950-0421-dtoverlays-Add-Support-for-the-UDRC-DRAWS.patch
Álvaro Fernández Rojas 4295485719 brcm2708: add linux 4.19 support 
Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709)

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2019-07-14 12:44:14 +02:00

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From f1e74b2152a21e848075ea40ba8e8665f8313739 Mon Sep 17 00:00:00 2001
From: Annaliese McDermond <nh6z@nh6z.net>
Date: Sun, 17 Mar 2019 16:48:36 -0700
Subject: [PATCH 421/703] dtoverlays: Add Support for the UDRC/DRAWS
Adds a new overlay to support the Northwest Digital Radio
DRAWS and UDRC HATs. See http://nwdigitalradio.com.
Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
---
arch/arm/boot/dts/overlays/Makefile | 2 +
arch/arm/boot/dts/overlays/README | 59 ++++++
arch/arm/boot/dts/overlays/draws-overlay.dts | 200 +++++++++++++++++++
arch/arm/boot/dts/overlays/udrc-overlay.dts | 128 ++++++++++++
4 files changed, 389 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/draws-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/udrc-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -29,6 +29,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
dionaudio-loco-v2.dtbo \
dpi18.dtbo \
dpi24.dtbo \
+ draws.dtbo \
dwc-otg.dtbo \
dwc2.dtbo \
enc28j60.dtbo \
@@ -146,6 +147,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
tpm-slb9670.dtbo \
uart0.dtbo \
uart1.dtbo \
+ udrc.dtbo \
upstream.dtbo \
upstream-aux-interrupt.dtbo \
vc4-fkms-v3d.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -531,6 +531,59 @@ Load: dtoverlay=dpi24
Params: <None>
+Name: draws
+Info: Configures the NW Digital Radio DRAWS Hat
+
+ The board includes an ADC to measure various board values and also
+ provides two analog user inputs on the expansion header. The ADC
+ can be configured for various sample rates and gain values to adjust
+ the input range. Tables describing the two parameters follow.
+
+ ADC Gain Values:
+ 0 = +/- 6.144V
+ 1 = +/- 4.096V
+ 2 = +/- 2.048V
+ 3 = +/- 1.024V
+ 4 = +/- 0.512V
+ 5 = +/- 0.256V
+ 6 = +/- 0.256V
+ 7 = +/- 0.256V
+
+ ADC Datarate Values:
+ 0 = 128sps
+ 1 = 250sps
+ 2 = 490sps
+ 3 = 920sps
+ 4 = 1600sps (default)
+ 5 = 2400sps
+ 6 = 3300sps
+ 7 = 3300sps
+Load: dtoverlay=draws,<param>=<val>
+Params: draws_adc_ch4_gain Sets the full scale resolution of the ADCs
+ input voltage sensor (default 1)
+
+ draws_adc_ch4_datarate Sets the datarate of the ADCs input voltage
+ sensor
+
+ draws_adc_ch5_gain Sets the full scale resolution of the ADCs
+ 5V rail voltage sensor (default 1)
+
+ draws_adc_ch5_datarate Sets the datarate of the ADCs 4V rail voltage
+ sensor
+
+ draws_adc_ch6_gain Sets the full scale resolution of the ADCs
+ AIN2 input (default 2)
+
+ draws_adc_ch6_datarate Sets the datarate of the ADCs AIN2 input
+
+ draws_adc_ch7_gain Sets the full scale resolution of the ADCs
+ AIN3 input (default 2)
+
+ draws_adc_ch7_datarate Sets the datarate of the ADCs AIN3 input
+
+ alsaname Name of the ALSA audio device (default "draws")
+
+
Name: dwc-otg
Info: Selects the dwc_otg USB controller driver which has fiq support. This
is the default on all except the Pi Zero which defaults to dwc2.
@@ -2117,6 +2170,12 @@ Params: txd1_pin GPIO pin
rxd1_pin GPIO pin for RXD1 (15, 33 or 41 - default 15)
+Name: udrc
+Info: Configures the NW Digital Radio UDRC Hat
+Load: dtoverlay=udrc,<param>=<val>
+Params: alsaname Name of the ALSA audio device (default "udrc")
+
+
Name: upstream
Info: Allow usage of downstream .dtb with upstream kernel. Comprises
vc4-kms-v3d, dwc2 and upstream-aux-interrupt overlays.
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/draws-overlay.dts
@@ -0,0 +1,200 @@
+#include <dt-bindings/clock/bcm2835.h>
+/*
+ * Device tree overlay for the DRAWS Hardware
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+ fragment@0 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target-path = "/";
+ __overlay__ {
+ regulators {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ udrc0_ldoin: udrc0_ldoin {
+ compatible = "regulator-fixed";
+ regulator-name = "ldoin";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+ };
+
+ pps: pps {
+ compatible = "pps-gpio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pps_pins>;
+ gpios = <&gpio 7 0>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c_arm>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ tlv320aic32x4: tlv320aic32x4@18 {
+ compatible = "ti,tlv320aic32x4";
+ reg = <0x18>;
+ #sound-dai-cells = <0>;
+ status = "okay";
+
+ clocks = <&clocks BCM2835_CLOCK_GP0>;
+ clock-names = "mclk";
+ assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
+ assigned-clock-rates = <25000000>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
+
+ reset-gpios = <&gpio 13 0>;
+
+ iov-supply = <&udrc0_ldoin>;
+ ldoin-supply = <&udrc0_ldoin>;
+ };
+
+ sc16is752: sc16is752@50 {
+ compatible = "nxp,sc16is752";
+ reg = <0x50>;
+ clocks = <&sc16is752_clk>;
+ interrupt-parent = <&gpio>;
+ interrupts = <17 2>; /* IRQ_TYPE_EDGE_FALLING */
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&sc16is752_irq>;
+
+ sc16is752_clk: sc16is752_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <1843200>;
+ };
+ };
+
+ tla2024: tla2024@48 {
+ compatible = "ti,ads1015";
+ reg = <0x48>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc_ch4: channel@4 {
+ reg = <4>;
+ ti,gain = <1>;
+ ti,datarate = <4>;
+ };
+
+ adc_ch5: channel@5 {
+ reg = <5>;
+ ti,gain = <1>;
+ ti,datarate = <4>;
+ };
+
+ adc_ch6: channel@6 {
+ reg = <6>;
+ ti,gain = <2>;
+ ti,datarate = <4>;
+ };
+
+ adc_ch7: channel@7 {
+ reg = <7>;
+ ti,gain = <2>;
+ ti,datarate = <4>;
+ };
+ };
+ };
+ };
+
+ fragment@3 {
+ target = <&sound>;
+ snd: __overlay__ {
+ compatible = "simple-audio-card";
+ i2s-controller = <&i2s>;
+ status = "okay";
+
+ simple-audio-card,name = "draws";
+ simple-audio-card,format = "i2s";
+
+ simple-audio-card,bitclock-master = <&dailink0_master>;
+ simple-audio-card,frame-master = <&dailink0_master>;
+
+ simple-audio-card,widgets =
+ "Line", "Line In",
+ "Line", "Line Out";
+
+ simple-audio-card,routing =
+ "IN1_R", "Line In",
+ "IN1_L", "Line In",
+ "CM_L", "Line In",
+ "CM_R", "Line In",
+ "Line Out", "LOR",
+ "Line Out", "LOL";
+
+ dailink0_master: simple-audio-card,cpu {
+ sound-dai = <&i2s>;
+ };
+
+ simple-audio-card,codec {
+ sound-dai = <&tlv320aic32x4>;
+ };
+ };
+ };
+
+ fragment@4 {
+ target = <&gpio>;
+ __overlay__ {
+ gpclk0_pin: gpclk0_pin {
+ brcm,pins = <4>;
+ brcm,function = <4>;
+ };
+
+ aic3204_reset: aic3204_reset {
+ brcm,pins = <13>;
+ brcm,function = <1>;
+ brcm,pull = <1>;
+ };
+
+ aic3204_gpio: aic3204_gpio {
+ brcm,pins = <26>;
+ };
+
+ sc16is752_irq: sc16is752_irq {
+ brcm,pins = <17>;
+ brcm,function = <0>;
+ brcm,pull = <2>;
+ };
+
+ pps_pins: pps_pins {
+ brcm,pins = <7>;
+ brcm,function = <0>;
+ brcm,pull = <0>;
+ };
+ };
+ };
+
+ __overrides__ {
+ draws_adc_ch4_gain = <&adc_ch4>,"ti,gain:0";
+ draws_adc_ch4_datarate = <&adc_ch4>,"ti,datarate:0";
+ draws_adc_ch5_gain = <&adc_ch5>,"ti,gain:0";
+ draws_adc_ch5_datarate = <&adc_ch5>,"ti,datarate:0";
+ draws_adc_ch6_gain = <&adc_ch6>,"ti,gain:0";
+ draws_adc_ch6_datarate = <&adc_ch6>,"ti,datarate:0";
+ draws_adc_ch7_gain = <&adc_ch7>,"ti,gain:0";
+ draws_adc_ch7_datarate = <&adc_ch7>,"ti,datarate:0";
+ alsaname = <&snd>, "simple-audio-card,name";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/udrc-overlay.dts
@@ -0,0 +1,128 @@
+#include <dt-bindings/clock/bcm2835.h>
+/*
+ * Device tree overlay for the Universal Digital Radio Controller
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+ fragment@0 {
+ target = <&i2s>;
+ __overlay__ {
+ clocks = <&clocks BCM2835_CLOCK_PCM>;
+ clock-names = "pcm";
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target-path = "/";
+ __overlay__ {
+ regulators {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ udrc0_ldoin: udrc0_ldoin {
+ compatible = "regulator-fixed";
+ regulator-name = "ldoin";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+ clocks = <&clocks BCM2835_CLOCK_VPU>;
+ clock-frequency = <400000>;
+
+ tlv320aic32x4: tlv320aic32x4@18 {
+ compatible = "ti,tlv320aic32x4";
+ #sound-dai-cells = <0>;
+ reg = <0x18>;
+ status = "okay";
+
+ clocks = <&clocks BCM2835_CLOCK_GP0>;
+ clock-names = "mclk";
+ assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
+ assigned-clock-rates = <25000000>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
+
+ reset-gpios = <&gpio 13 0>;
+
+ iov-supply = <&udrc0_ldoin>;
+ ldoin-supply = <&udrc0_ldoin>;
+ };
+ };
+ };
+
+ fragment@3 {
+ target = <&sound>;
+ snd: __overlay__ {
+ compatible = "simple-audio-card";
+ i2s-controller = <&i2s>;
+ status = "okay";
+
+ simple-audio-card,name = "udrc";
+ simple-audio-card,format = "i2s";
+
+ simple-audio-card,bitclock-master = <&dailink0_master>;
+ simple-audio-card,frame-master = <&dailink0_master>;
+
+ simple-audio-card,widgets =
+ "Line", "Line In",
+ "Line", "Line Out";
+
+ simple-audio-card,routing =
+ "IN1_R", "Line In",
+ "IN1_L", "Line In",
+ "CM_L", "Line In",
+ "CM_R", "Line In",
+ "Line Out", "LOR",
+ "Line Out", "LOL";
+
+ dailink0_master: simple-audio-card,cpu {
+ sound-dai = <&i2s>;
+ };
+
+ simple-audio-card,codec {
+ sound-dai = <&tlv320aic32x4>;
+ };
+ };
+ };
+
+ fragment@4 {
+ target = <&gpio>;
+ __overlay__ {
+ gpclk0_pin: gpclk0_pin {
+ brcm,pins = <4>;
+ brcm,function = <4>;
+ };
+
+ aic3204_reset: aic3204_reset {
+ brcm,pins = <13>;
+ brcm,function = <1>;
+ brcm,pull = <1>;
+ };
+
+ aic3204_gpio: aic3204_gpio {
+ brcm,pins = <26>;
+ };
+ };
+ };
+
+ __overrides__ {
+ alsaname = <&snd>, "simple-audio-card,name";
+ };
+};
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