diff options
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.patch | 81 |
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"; ++ }; ++ ++}; |