mirror of https://github.com/hak5/openwrt-owl.git
153 lines
4.8 KiB
Diff
153 lines
4.8 KiB
Diff
From 5131bc710dd79b98d12c08b2f22477f48fdbd0d3 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Fri, 26 Jun 2015 08:50:11 +0100
|
|
Subject: [PATCH 098/121] BCM270X_DT: Add overlay to enable uart1
|
|
|
|
N.B. The UART1 clock is derived from the core clock. The firmware
|
|
will update clock-frequency if core_freq is set, but be aware
|
|
that unless force_turbo=1 while overclocking then the baud rate
|
|
will vary with ARM activity.
|
|
---
|
|
arch/arm/boot/dts/bcm2708-rpi-b-plus.dts | 1 +
|
|
arch/arm/boot/dts/bcm2708-rpi-b.dts | 1 +
|
|
arch/arm/boot/dts/bcm2708-rpi-cm.dts | 1 +
|
|
arch/arm/boot/dts/bcm2709-rpi-2-b.dts | 1 +
|
|
arch/arm/boot/dts/overlays/Makefile | 1 +
|
|
arch/arm/boot/dts/overlays/README | 8 ++++++
|
|
arch/arm/boot/dts/overlays/uart1-overlay.dts | 38 ++++++++++++++++++++++++++++
|
|
arch/arm/configs/bcm2709_defconfig | 2 +-
|
|
arch/arm/configs/bcmrpi_defconfig | 2 +-
|
|
9 files changed, 53 insertions(+), 2 deletions(-)
|
|
create mode 100644 arch/arm/boot/dts/overlays/uart1-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
|
|
+++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
|
|
@@ -103,6 +103,7 @@
|
|
__overrides__ {
|
|
uart0 = <&uart0>,"status";
|
|
uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
|
|
+ uart1_clkrate = <&uart1>,"clock-frequency:0";
|
|
i2s = <&i2s>,"status";
|
|
spi = <&spi0>,"status";
|
|
i2c0 = <&i2c0>,"status";
|
|
--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
|
|
+++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
|
|
@@ -97,6 +97,7 @@
|
|
__overrides__ {
|
|
uart0 = <&uart0>,"status";
|
|
uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
|
|
+ uart1_clkrate = <&uart1>,"clock-frequency:0";
|
|
i2s = <&i2s>,"status";
|
|
spi = <&spi0>,"status";
|
|
i2c0 = <&i2c0>,"status";
|
|
--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
|
|
+++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
|
|
@@ -79,6 +79,7 @@
|
|
__overrides__ {
|
|
uart0 = <&uart0>,"status";
|
|
uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
|
|
+ uart1_clkrate = <&uart1>,"clock-frequency:0";
|
|
i2s = <&i2s>,"status";
|
|
spi = <&spi0>,"status";
|
|
i2c0 = <&i2c0>,"status";
|
|
--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
|
|
+++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
|
|
@@ -103,6 +103,7 @@
|
|
__overrides__ {
|
|
uart0 = <&uart0>,"status";
|
|
uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
|
|
+ uart1_clkrate = <&uart1>,"clock-frequency:0";
|
|
i2s = <&i2s>,"status";
|
|
spi = <&spi0>,"status";
|
|
i2c0 = <&i2c0>,"status";
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
|
@@ -42,6 +42,7 @@ dtb-$(RPI_DT_OVERLAYS) += sdhost-overlay
|
|
dtb-$(RPI_DT_OVERLAYS) += spi-bcm2708-overlay.dtb
|
|
dtb-$(RPI_DT_OVERLAYS) += spi-bcm2835-overlay.dtb
|
|
dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb
|
|
+dtb-$(RPI_DT_OVERLAYS) += uart1-overlay.dtb
|
|
dtb-$(RPI_DT_OVERLAYS) += w1-gpio-overlay.dtb
|
|
dtb-$(RPI_DT_OVERLAYS) += w1-gpio-pullup-overlay.dtb
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -489,6 +489,14 @@ Params: speed Display
|
|
dtoverlay=tinylcd35,touch,touchgpio=3
|
|
|
|
|
|
+Name: uart1
|
|
+Info: Enable uart1 in place of uart0
|
|
+Load: dtoverlay=uart1,<param>=<val>
|
|
+Params: txd1_pin GPIO pin for TXD1 (14, 32 or 40 - default 14)
|
|
+
|
|
+ rxd1_pin GPIO pin for RXD1 (15, 33 or 41 - default 15)
|
|
+
|
|
+
|
|
Name: w1-gpio
|
|
Info: Configures the w1-gpio Onewire interface module.
|
|
Use this overlay if you *don't* need a GPIO to drive an external pullup.
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/uart1-overlay.dts
|
|
@@ -0,0 +1,38 @@
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/{
|
|
+ compatible = "brcm,bcm2708";
|
|
+
|
|
+ fragment@0 {
|
|
+ target = <&uart1>;
|
|
+ __overlay__ {
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&uart1_pins>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&gpio>;
|
|
+ __overlay__ {
|
|
+ uart1_pins: uart1_pins {
|
|
+ brcm,pins = <14 15>;
|
|
+ brcm,function = <2>; /* alt5 */
|
|
+ brcm,pull = <0 2>;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@2 {
|
|
+ target-path = "/chosen";
|
|
+ __overlay__ {
|
|
+ bootargs = "8250.nr_uarts=1";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ txd1_pin = <&uart1_pins>,"brcm,pins:0";
|
|
+ rxd1_pin = <&uart1_pins>,"brcm,pins:4";
|
|
+ };
|
|
+};
|
|
--- a/arch/arm/configs/bcm2709_defconfig
|
|
+++ b/arch/arm/configs/bcm2709_defconfig
|
|
@@ -562,7 +562,7 @@ CONFIG_SERIAL_8250=y
|
|
CONFIG_SERIAL_8250_CONSOLE=y
|
|
# CONFIG_SERIAL_8250_DMA is not set
|
|
CONFIG_SERIAL_8250_NR_UARTS=1
|
|
-CONFIG_SERIAL_8250_RUNTIME_UARTS=1
|
|
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
|
|
CONFIG_SERIAL_AMBA_PL011=y
|
|
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
|
|
CONFIG_SERIAL_OF_PLATFORM=y
|
|
--- a/arch/arm/configs/bcmrpi_defconfig
|
|
+++ b/arch/arm/configs/bcmrpi_defconfig
|
|
@@ -555,7 +555,7 @@ CONFIG_SERIAL_8250=y
|
|
CONFIG_SERIAL_8250_CONSOLE=y
|
|
# CONFIG_SERIAL_8250_DMA is not set
|
|
CONFIG_SERIAL_8250_NR_UARTS=1
|
|
-CONFIG_SERIAL_8250_RUNTIME_UARTS=1
|
|
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
|
|
CONFIG_SERIAL_AMBA_PL011=y
|
|
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
|
|
CONFIG_SERIAL_OF_PLATFORM=y
|