diff options
Diffstat (limited to 'Documentation/devicetree/bindings/spi')
4 files changed, 52 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt new file mode 100644 index 000000000000..8bf89c643640 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-spi.txt @@ -0,0 +1,22 @@ +Broadcom BCM2835 SPI0 controller + +The BCM2835 contains two forms of SPI master controller, one known simply as +SPI0, and the other known as the "Universal SPI Master"; part of the +auxilliary block. This binding applies to the SPI0 controller. + +Required properties: +- compatible: Should be "brcm,bcm2835-spi". +- reg: Should contain register location and length. +- interrupts: Should contain interrupt. +- clocks: The clock feeding the SPI controller. + +Example: + +spi@20204000 { + compatible = "brcm,bcm2835-spi"; + reg = <0x7e204000 0x1000>; + interrupts = <2 22>; + clocks = <&clk_spi>; + #address-cells = <1>; + #size-cells = <0>; +}; diff --git a/Documentation/devicetree/bindings/spi/fsl-spi.txt b/Documentation/devicetree/bindings/spi/fsl-spi.txt index 777abd7399d5..b032dd76e9d2 100644 --- a/Documentation/devicetree/bindings/spi/fsl-spi.txt +++ b/Documentation/devicetree/bindings/spi/fsl-spi.txt @@ -4,7 +4,7 @@ Required properties: - cell-index : QE SPI subblock index. 0: QE subblock SPI1 1: QE subblock SPI2 -- compatible : should be "fsl,spi". +- compatible : should be "fsl,spi" or "aeroflexgaisler,spictrl". - mode : the SPI operation mode, it can be "cpu" or "cpu-qe". - reg : Offset and length of the register set for the device - interrupts : <a b> where a is the interrupt number and b is a @@ -14,6 +14,7 @@ Required properties: controller you have. - interrupt-parent : the phandle for the interrupt controller that services interrupts for this device. +- clock-frequency : input clock frequency to non FSL_SOC cores Optional properties: - gpios : specifies the gpio pins to be used for chipselects. diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt b/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt new file mode 100644 index 000000000000..91ff771c7e77 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/nvidia,tegra114-spi.txt @@ -0,0 +1,26 @@ +NVIDIA Tegra114 SPI controller. + +Required properties: +- compatible : should be "nvidia,tegra114-spi". +- reg: Should contain SPI registers location and length. +- interrupts: Should contain SPI interrupts. +- nvidia,dma-request-selector : The Tegra DMA controller's phandle and + request selector for this SPI controller. +- This is also require clock named "spi" as per binding document + Documentation/devicetree/bindings/clock/clock-bindings.txt + +Recommended properties: +- spi-max-frequency: Definition as per + Documentation/devicetree/bindings/spi/spi-bus.txt +Example: + +spi@7000d600 { + compatible = "nvidia,tegra114-spi"; + reg = <0x7000d600 0x200>; + interrupts = <0 82 0x04>; + nvidia,dma-request-selector = <&apbdma 16>; + spi-max-frequency = <25000000>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; +}; diff --git a/Documentation/devicetree/bindings/spi/spi-samsung.txt b/Documentation/devicetree/bindings/spi/spi-samsung.txt index a15ffeddfba4..86aa061f069f 100644 --- a/Documentation/devicetree/bindings/spi/spi-samsung.txt +++ b/Documentation/devicetree/bindings/spi/spi-samsung.txt @@ -31,9 +31,6 @@ Required Board Specific Properties: - #address-cells: should be 1. - #size-cells: should be 0. -- gpios: The gpio specifier for clock, mosi and miso interface lines (in the - order specified). The format of the gpio specifier depends on the gpio - controller. Optional Board Specific Properties: @@ -86,9 +83,8 @@ Example: spi_0: spi@12d20000 { #address-cells = <1>; #size-cells = <0>; - gpios = <&gpa2 4 2 3 0>, - <&gpa2 6 2 3 0>, - <&gpa2 7 2 3 0>; + pinctrl-names = "default"; + pinctrl-0 = <&spi0_bus>; w25q80bw@0 { #address-cells = <1>; |