This patch adds the device tree binding doc for the Tegra QSPI controller on Tegra210.
Signed-off-by: Tom Warren twarren@nvidia.com --- Changes in v2: - based it more on kernel's nvidia,tegra114-spi.txt binding - changes based on prelim review by swarren@nvidia.com Changes in v3: - renamed to 'nvidia,tegra210-qspi.txt' to match kernel bindings - more changes based on review from swarren@nvidia.com
Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt | 42 ++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt
diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt b/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt new file mode 100644 index 0000000..fe1558f --- /dev/null +++ b/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt @@ -0,0 +1,42 @@ +NVIDIA Tegra QSPI controller. + +Required properties: +- compatible : for Tegra210, must contain "nvidia,tegra210-qspi". +- reg: Should contain QSPI registers location and length. +- interrupts: Should contain QSPI interrupt. +- clock-names : Must include the following entries: + - qspi +- resets : Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names : Must include the following entries: + - qspi +- clocks : Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. + +Optional properties: +- dmas : Must contain an entry for each entry in clock-names. + See ../dma/dma.txt for details. +- dma-names : Must include the following entries: + - rx + - tx + +Recommended properties: +- spi-max-frequency: Definition as per spi-bus.txt + +Example: + +spi@70410000 { + compatible = "nvidia,tegra210-qspi"; + reg = <0x0 0x70410000 0x0 0x1000>; + interrupts = <0 10 0x04>; + spi-max-frequency = <24000000>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&tegra_car 211>; + clock-names = "qspi"; + resets = <&tegra_car 211>; + reset-names = "qspi"; + dmas = <&apbdma 16>, <&apbdma 16>; + dma-names = "rx", "tx"; + status = "disabled"; +};