diff options
Diffstat (limited to 'Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt | 49 |
1 files changed, 39 insertions, 10 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt b/Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt index e0e0755cabd8..f42e18078376 100644 --- a/Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt +++ b/Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt @@ -1,13 +1,22 @@ Xilinx XADC device driver -This binding document describes the bindings for both of them since the -bindings are very similar. The Xilinx XADC is a ADC that can be found in the -series 7 FPGAs from Xilinx. The XADC has a DRP interface for communication. -Currently two different frontends for the DRP interface exist. One that is only -available on the ZYNQ family as a hardmacro in the SoC portion of the ZYNQ. The -other one is available on all series 7 platforms and is a softmacro with a AXI -interface. This binding document describes the bindings for both of them since -the bindings are very similar. +This binding document describes the bindings for the Xilinx 7 Series XADC as well +as the UltraScale/UltraScale+ System Monitor. + +The Xilinx XADC is an ADC that can be found in the Series 7 FPGAs from Xilinx. +The XADC has a DRP interface for communication. Currently two different +frontends for the DRP interface exist. One that is only available on the ZYNQ +family as a hardmacro in the SoC portion of the ZYNQ. The other one is available +on all series 7 platforms and is a softmacro with a AXI interface. This binding +document describes the bindings for both of them since the bindings are very +similar. + +The Xilinx System Monitor is an ADC that is found in the UltraScale and +UltraScale+ FPGAs from Xilinx. The System Monitor provides a DRP interface for +communication. Xilinx provides a standard IP core that can be used to access the +System Monitor through an AXI interface in the FPGA fabric. This IP core is +called the Xilinx System Management Wizard. This document describes the bindings +for this IP. Required properties: - compatible: Should be one of @@ -15,11 +24,14 @@ Required properties: configuration interface to interface to the XADC hardmacro. * "xlnx,axi-xadc-1.00.a": When using the axi-xadc pcore to interface to the XADC hardmacro. + * "xlnx,system-management-wiz-1.3": When using the + Xilinx System Management Wizard fabric IP core to access the + UltraScale and UltraScale+ System Monitor. - reg: Address and length of the register set for the device - interrupts: Interrupt for the XADC control interface. - clocks: When using the ZYNQ this must be the ZYNQ PCAP clock, - when using the AXI-XADC pcore this must be the clock that provides the - clock to the AXI bus interface of the core. + when using the axi-xadc or the axi-system-management-wizard this must be + the clock that provides the clock to the AXI bus interface of the core. Optional properties: - xlnx,external-mux: @@ -110,3 +122,20 @@ Examples: }; }; }; + + adc@80000000 { + compatible = "xlnx,system-management-wiz-1.3"; + reg = <0x80000000 0x1000>; + interrupts = <0 81 4>; + interrupt-parent = <&gic>; + clocks = <&fpga1_clk>; + + xlnx,channels { + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + reg = <0>; + xlnx,bipolar; + }; + }; + }; |