diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/input/rmi4/rmi_spi.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/input/rmi4/rmi_spi.txt')
-rw-r--r-- | Documentation/devicetree/bindings/input/rmi4/rmi_spi.txt | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/rmi4/rmi_spi.txt b/Documentation/devicetree/bindings/input/rmi4/rmi_spi.txt new file mode 100644 index 000000000..632f473db --- /dev/null +++ b/Documentation/devicetree/bindings/input/rmi4/rmi_spi.txt @@ -0,0 +1,56 @@ +Synaptics RMI4 SPI Device Binding + +The Synaptics RMI4 core is able to support RMI4 devices using different +transports and different functions. This file describes the device tree +bindings for devices using the SPI transport driver. Complete documentation +for other transports and functions can be found in +Documentation/devicetree/bindings/input/rmi4. + +Required Properties: +- compatible: syna,rmi4-spi +- reg: Chip select address for the device +- #address-cells: Set to 1 to indicate that the function child nodes + consist of only on uint32 value. +- #size-cells: Set to 0 to indicate that the function child nodes do not + have a size property. + +Optional Properties: +- interrupts: interrupt which the rmi device is connected to. +See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt + +- spi-rx-delay-us: microsecond delay after a read transfer. +- spi-tx-delay-us: microsecond delay after a write transfer. + +Function Parameters: +Parameters specific to RMI functions are contained in child nodes of the rmi device + node. Documentation for the parameters of each function can be found in: +Documentation/devicetree/bindings/input/rmi4/rmi_f*.txt. + + + +Example: + spi@7000d800 { + rmi4-spi-dev@0 { + compatible = "syna,rmi4-spi"; + reg = <0x0>; + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <4000000>; + spi-cpha; + spi-cpol; + interrupt-parent = <&gpio>; + interrupts = <TEGRA_GPIO(K, 2) 0x2>; + spi-rx-delay-us = <30>; + + rmi4-f01@1 { + reg = <0x1>; + syna,nosleep-mode = <1>; + }; + + rmi4-f11@11 { + reg = <0x11>; + touchscreen-inverted-y; + syna,sensor-type = <2>; + }; + }; + }; |