diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0227-overlays-Add-sc16is752-i2c-overlay.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0227-overlays-Add-sc16is752-i2c-overlay.patch | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0227-overlays-Add-sc16is752-i2c-overlay.patch b/target/linux/brcm2708/patches-4.14/950-0227-overlays-Add-sc16is752-i2c-overlay.patch new file mode 100644 index 0000000000..5b97327ea6 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0227-overlays-Add-sc16is752-i2c-overlay.patch @@ -0,0 +1,95 @@ +From c286380fe677e404af0a1226c6589b3f24fafc6c Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 20 Feb 2018 17:32:02 +0000 +Subject: [PATCH 227/454] overlays: Add sc16is752-i2c overlay + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 15 +++++-- + .../dts/overlays/sc16is752-i2c-overlay.dts | 40 +++++++++++++++++++ + 3 files changed, 53 insertions(+), 3 deletions(-) + create mode 100644 arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -100,6 +100,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + rpi-tv.dtbo \ + rra-digidac1-wm8741-audio.dtbo \ + sc16is750-i2c.dtbo \ ++ sc16is752-i2c.dtbo \ + sc16is752-spi1.dtbo \ + sdhost.dtbo \ + sdio.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1447,14 +1447,23 @@ 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. +- ++ Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). 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-i2c ++Info: Overlay for the NXP SC16IS752 dual UART with I2C Interface ++ Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To ++ select another address, please refer to table 10 in reference manual. ++Load: dtoverlay=sc16is752-i2c,<param>=<val> ++Params: int_pin GPIO used for IRQ (default 24) ++ addr Address (default 0x48) ++ xtal On-board crystal frequency (default 14745600) ++ ++ + 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/sc16is752-i2c-overlay.dts +@@ -0,0 +1,40 @@ ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target = <&i2c1>; ++ ++ frag1: __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ sc16is752: sc16is752@48 { ++ compatible = "nxp,sc16is752"; ++ reg = <0x48>; // i2c address ++ clocks = <&sc16is752_clk>; ++ interrupt-parent = <&gpio>; ++ interrupts = <24 0x2>; /* IRQ_TYPE_EDGE_FALLING */ ++ gpio-controller; ++ #gpio-cells = <0>; ++ i2c-max-frequency = <400000>; ++ status = "okay"; ++ ++ sc16is752_clk: sc16is752_clk { ++ compatible = "fixed-clock"; ++ #clock-cells = <0>; ++ clock-frequency = <14745600>; ++ }; ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ int_pin = <&sc16is752>,"interrupts:0"; ++ addr = <&sc16is752>,"reg:0"; ++ xtal = <&sc16is752>,"clock-frequency:0"; ++ }; ++}; |