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Diffstat (limited to 'doc/device-tree-bindings/spi/spi-qup.txt')
| -rw-r--r-- | doc/device-tree-bindings/spi/spi-qup.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/spi/spi-qup.txt b/doc/device-tree-bindings/spi/spi-qup.txt new file mode 100644 index 0000000000..3697df2631 --- /dev/null +++ b/doc/device-tree-bindings/spi/spi-qup.txt @@ -0,0 +1,33 @@ +Qualcomm QUP SPI controller Device Tree Bindings +------------------------------------------- + +Required properties: +- compatible : Should be "qcom,spi-qup-v1.1.1", "qcom,spi-qup-v2.1.1" + or "qcom,spi-qup-v2.2.1" +- reg : Physical base address and size of SPI registers map. +- clock : Clock phandle (see clock bindings for details). +- #address-cells : Number of cells required to define a chip select + address on the SPI bus. Should be set to 1. +- #size-cells : Should be zero. +- pinctrl-names : Must be "default" +- pinctrl-n : At least one pinctrl phandle +- cs-gpios : Should specify GPIOs used for chipselects. + The gpios will be referred to as reg = <index> in the + SPI child nodes. + +Optional properties: +- num-cs : total number of chipselects + +Example: + + blsp1_spi1: spi@78b5000 { + compatible = "qcom,spi-qup-v2.2.1"; + reg = <0x78b5000 0x600>; + clock = <&gcc 23>; + #address-cells = <1>; + #size-cells = <0>; + pinctrl-names = "spi"; + pinctrl-0 = <&blsp_spi0>; + num-cs = <2>; + cs-gpios = <&soc_gpios 54 GPIO_ACTIVE_HIGH>, <&soc_gpios 4 GPIO_ACTIVE_HIGH>; + }; |