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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0491-overlays-added-sc16is750-UART-over-I2C-1617.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0491-overlays-added-sc16is750-UART-over-I2C-1617.patch81
1 files changed, 81 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0491-overlays-added-sc16is750-UART-over-I2C-1617.patch b/target/linux/brcm2708/patches-4.4/0491-overlays-added-sc16is750-UART-over-I2C-1617.patch
new file mode 100644
index 0000000000..8c4a58de9f
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0491-overlays-added-sc16is750-UART-over-I2C-1617.patch
@@ -0,0 +1,81 @@
+From 0f34b495557223c0d129bf97a1fb89990cfd83ed 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";
++ };
++
++};