mirror of https://github.com/hak5/openwrt-owl.git
82 lines
2.4 KiB
Diff
82 lines
2.4 KiB
Diff
From 2de4b29019b167f079ea48e30d641f7d0370bf08 Mon Sep 17 00:00:00 2001
|
|
From: Georgii Staroselskii <gosha371@gmail.com>
|
|
Date: Tue, 23 Aug 2016 17:40:05 +0400
|
|
Subject: [PATCH] overlays: added sc16is750 UART over I2C (#1617)
|
|
|
|
---
|
|
arch/arm/boot/dts/overlays/Makefile | 1 +
|
|
arch/arm/boot/dts/overlays/README | 10 ++++++
|
|
.../boot/dts/overlays/sc16is750-i2c-overlay.dts | 37 ++++++++++++++++++++++
|
|
3 files changed, 48 insertions(+)
|
|
create mode 100644 arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
|
@@ -75,6 +75,7 @@ dtbo-$(RPI_DT_OVERLAYS) += rpi-ft5406.dt
|
|
dtbo-$(RPI_DT_OVERLAYS) += rpi-proto.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += rpi-sense.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += rra-digidac1-wm8741-audio.dtbo
|
|
+dtbo-$(RPI_DT_OVERLAYS) += sc16is750-i2c.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += sc16is752-spi1.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += sdhost.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += sdio.dtbo
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -935,6 +935,16 @@ Load: dtoverlay=rra-digidac1-wm8741-au
|
|
Params: <None>
|
|
|
|
|
|
+Name: sc16is750-i2c
|
|
+Info: Overlay for the NXP SC16IS750 UART with I2C Interface
|
|
+ Enables the chip on I2C1 at 0x48. To select another address,
|
|
+ please refer to table 10 in reference manual.
|
|
+
|
|
+Load: dtoverlay=sc16is750-i2c,<param>=<val>
|
|
+Params: int_pin GPIO used for IRQ (default 24)
|
|
+ addr Address (default 0x48)
|
|
+
|
|
+
|
|
Name: sc16is752-spi1
|
|
Info: Overlay for the NXP SC16IS752 Dual UART with SPI Interface
|
|
Enables the chip on SPI1.
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
|
|
@@ -0,0 +1,37 @@
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
|
|
+
|
|
+ fragment@0 {
|
|
+ target = <&i2c_arm>;
|
|
+ __overlay__ {
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <0>;
|
|
+ status = "okay";
|
|
+
|
|
+ sc16is750: sc16is750@48 {
|
|
+ compatible = "nxp,sc16is750";
|
|
+ reg = <0x48>; /* address */
|
|
+ clocks = <&sc16is750_clk>;
|
|
+ interrupt-parent = <&gpio>;
|
|
+ interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
|
|
+ #gpio-cells = <2>;
|
|
+
|
|
+ sc16is750_clk: sc16is750_clk {
|
|
+ compatible = "fixed-clock";
|
|
+ #clock-cells = <0>;
|
|
+ clock-frequency = <14745600>;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+
|
|
+ __overrides__ {
|
|
+ int_pin = <&sc16is750>,"interrupts:0";
|
|
+ addr = <&sc16is750>,"reg:0";
|
|
+ };
|
|
+
|
|
+};
|