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author | Martin Sperl <kernel@martin.sperl.org> | 2015-09-11 11:22:03 (GMT) |
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committer | Mark Brown <broonie@kernel.org> | 2015-10-07 10:42:48 (GMT) |
commit | 541cf5de027b7e9afe3a8f0ce205d2ccc02ac3fe (patch) | |
tree | bb8853568d43bc87b69cd2a33332f029979f393b | |
parent | 6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff) | |
download | linux-541cf5de027b7e9afe3a8f0ce205d2ccc02ac3fe.tar.xz |
spi: bcm2835aux: spi: add bindings for the bcm2835 auxiliary spi devices
This defines the spi1 and spi2 devices in the device-tree.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r-- | Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt new file mode 100644 index 0000000..9887b07 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt @@ -0,0 +1,38 @@ +Broadcom BCM2835 auxiliar SPI1/2 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 +auxiliary block. This binding applies to the SPI1/2 controller. + +Required properties: +- compatible: Should be "brcm,bcm2835-aux-spi". +- reg: Should contain register location and length for the spi block +- interrupts: Should contain shared interrupt of the aux block +- clocks: The clock feeding the SPI controller - needs to + point to the auxiliar clock driver of the bcm2835, + as this clock will enable the output gate for the specific + clock. +- cs-gpios: the cs-gpios (native cs is NOT supported) + see also spi-bus.txt + +Example: + +spi1@7e215080 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e215080 0x40>; + interrupts = <1 29>; + clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>; +}; + +spi2@7e2150c0 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e2150c0 0x40>; + interrupts = <1 29>; + clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>; +}; |