[PATCH 01/15] dt-bindings: spi: allow expressing DTR capability

Pratyush Yadav p.yadav at ti.com
Wed Feb 26 13:55:51 CET 2020

Allow spi devices to express DTR receive and transmit capabilities via
the properties "spi-rx-dtr" and "spi-tx-dtr".

Signed-off-by: Pratyush Yadav <p.yadav at ti.com>
Corresponding Kernel DT patch at

 doc/device-tree-bindings/spi/spi-bus.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/device-tree-bindings/spi/spi-bus.txt b/doc/device-tree-bindings/spi/spi-bus.txt
index 420ec9529f..0d55303a0e 100644
--- a/doc/device-tree-bindings/spi/spi-bus.txt
+++ b/doc/device-tree-bindings/spi/spi-bus.txt
@@ -59,6 +59,10 @@ contain the following properties.
                       used for MOSI. Defaults to 1 if not present.
 - spi-rx-bus-width - (optional) The bus width(number of data wires) that
                       used for MISO. Defaults to 1 if not present.
+- spi-tx-dtr       - (optional) Its presence indicates bus can transmit in DTR
+		     protocol.
+- spi-rx-dtr       - (optional) Its presence indicates bus can receive in DTR
+		     protocol.
 - spi-half-duplex  - (optional) Indicates that the SPI bus should wait for
 		      a header byte before reading data from the slave.


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