mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
133 lines
3.6 KiB
Diff
133 lines
3.6 KiB
Diff
From 6f5604a2d672ffb874f89f9ae276b565ae99dcc6 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
|
Date: Wed, 16 Nov 2022 14:54:08 +0000
|
|
Subject: [PATCH] overlays: Add overlay pwm1
|
|
|
|
pwm1 enables the second PWM interface found on BCM2711. It can only
|
|
be mapped to GPIOs 40 & 41.
|
|
|
|
See: https://forums.raspberrypi.com/viewtopic.php?t=342458
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
|
---
|
|
arch/arm/boot/dts/overlays/Makefile | 1 +
|
|
arch/arm/boot/dts/overlays/README | 18 +++++++
|
|
arch/arm/boot/dts/overlays/overlay_map.dts | 4 ++
|
|
arch/arm/boot/dts/overlays/pwm1-overlay.dts | 60 +++++++++++++++++++++
|
|
4 files changed, 83 insertions(+)
|
|
create mode 100644 arch/arm/boot/dts/overlays/pwm1-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
|
@@ -183,6 +183,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
|
|
pwm.dtbo \
|
|
pwm-2chan.dtbo \
|
|
pwm-ir-tx.dtbo \
|
|
+ pwm1.dtbo \
|
|
qca7000.dtbo \
|
|
qca7000-uart0.dtbo \
|
|
ramoops.dtbo \
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -3216,6 +3216,24 @@ Params: gpio_pin Output G
|
|
func Pin function (default 2 = Alt5)
|
|
|
|
|
|
+Name: pwm1
|
|
+Info: Configures one or two PWM channel on PWM1 (BCM2711 only)
|
|
+ N.B.:
|
|
+ 1) The onboard analogue audio output uses both PWM channels.
|
|
+ 2) So be careful mixing audio and PWM.
|
|
+ Note that even when only one pin is enabled, both channels are available
|
|
+ from the PWM driver, so be careful to use the correct one.
|
|
+Load: dtoverlay=pwm1,<param>=<val>
|
|
+Params: clock PWM clock frequency (informational)
|
|
+ pins_40 Enable channel 0 (PWM1_0) on GPIO 40
|
|
+ pins_41 Enable channel 1 (PWM1_1) on GPIO 41
|
|
+ pins_40_41 Enable channels 0 (PWM1_0) and 1 (PW1_1) on
|
|
+ GPIOs 40 and 41 (default)
|
|
+ pull_up Enable pull-ups on the PWM pins (default)
|
|
+ pull_down Enable pull-downs on the PWM pins
|
|
+ pull_off Disable pulls on the PWM pins
|
|
+
|
|
+
|
|
Name: qca7000
|
|
Info: in-tech's Evaluation Board for PLC Stamp micro
|
|
This uses spi0 and a separate GPIO interrupt to connect the QCA7000.
|
|
--- a/arch/arm/boot/dts/overlays/overlay_map.dts
|
|
+++ b/arch/arm/boot/dts/overlays/overlay_map.dts
|
|
@@ -77,6 +77,10 @@
|
|
renamed = "miniuart-bt";
|
|
};
|
|
|
|
+ pwm1 {
|
|
+ bcm2711;
|
|
+ };
|
|
+
|
|
ramoops {
|
|
bcm2835;
|
|
bcm2711 = "ramoops-pi4";
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/pwm1-overlay.dts
|
|
@@ -0,0 +1,60 @@
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+#include <dt-bindings/pinctrl/bcm2835.h>
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2711";
|
|
+
|
|
+ fragment@0 {
|
|
+ target = <&pins>;
|
|
+ __overlay__ {
|
|
+ brcm,pins = <40 41>;
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&pins>;
|
|
+ __dormant__ {
|
|
+ brcm,pins = <40>;
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@2 {
|
|
+ target = <&pins>;
|
|
+ __dormant__ {
|
|
+ brcm,pins = <41>;
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@3 {
|
|
+ target = <&gpio>;
|
|
+ __overlay__ {
|
|
+ pins: pwm1_overlay_pins {
|
|
+ brcm,pins = <40 41>;
|
|
+ brcm,function = <BCM2835_FSEL_ALT0>;
|
|
+ brcm,pull = <BCM2835_PUD_UP>;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@4 {
|
|
+ target = <&pwm1>;
|
|
+ pwm: __overlay__ {
|
|
+ status = "okay";
|
|
+ assigned-clock-rates = <100000000>;
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&pins>;
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ clock = <&pwm>, "assigned-clock-rates:0";
|
|
+ pins_40_41 = <0>,"+0-1-2";
|
|
+ pins_40 = <0>,"-0+1-2";
|
|
+ pins_41 = <0>,"-0-1+2";
|
|
+ pull_up = <&pins>, "brcm,pull:0=", <BCM2835_PUD_UP>;
|
|
+ pull_down = <&pins>, "brcm,pull:0=", <BCM2835_PUD_DOWN>;
|
|
+ pull_off = <&pins>, "brcm,pull:0=", <BCM2835_PUD_OFF>;
|
|
+ };
|
|
+};
|