summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/spi
diff options
context:
space:
mode:
authorPhil Edworthy <phil.edworthy@renesas.com>2019-03-19 15:52:05 +0000
committerMark Brown <broonie@kernel.org>2019-03-20 17:20:43 +0000
commit57a9f6e7eefa697349ff4823f178fd56abe27345 (patch)
treed7da6c64a642276da70ad72cfdf2fca7750eb459 /Documentation/devicetree/bindings/spi
parentf457cb707836e79a88b64ab22230edc2aa8ce0af (diff)
dt-bindings: snps,dw-apb-ssi: Add mandatory clock bindings documentation
The Synopsys SSI driver uses a mandatory clock that is not documented, so detail it in the device tree bindings. Also correct the spelling of "pins" in the "Optional Properties" section for the driver. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/spi')
-rw-r--r--Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt
index 2864bc6b659c..bcd8f960afb9 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt
@@ -8,9 +8,10 @@ Required properties:
- interrupts : One interrupt, used by the controller.
- #address-cells : <1>, as required by generic SPI binding.
- #size-cells : <0>, also as required by generic SPI binding.
+- clocks : phandle for the core clock used to generate the external SPI clock.
Optional properties:
-- cs-gpios : Specifies the gpio pis to be used for chipselects.
+- cs-gpios : Specifies the gpio pins to be used for chipselects.
- num-cs : The number of chipselects. If omitted, this will default to 4.
- reg-io-width : The I/O register width (in bytes) implemented by this
device. Supported values are 2 or 4 (the default).
@@ -25,6 +26,7 @@ Example:
interrupts = <0 154 4>;
#address-cells = <1>;
#size-cells = <0>;
+ clocks = <&spi_m_clk>;
num-cs = <2>;
cs-gpios = <&gpio0 13 0>,
<&gpio0 14 0>;