diff options
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/cros-ec.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt index 5f229c5f6da..8009c3d87f3 100644 --- a/Documentation/devicetree/bindings/mfd/cros-ec.txt +++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt @@ -17,6 +17,15 @@ Required properties (SPI): - compatible: "google,cros-ec-spi" - reg: SPI chip select +Optional properties (SPI): +- google,cros-ec-spi-msg-delay: Some implementations of the EC require some + additional processing time in order to accept new transactions. If the delay + between transactions is not long enough the EC may not be able to respond + properly to subsequent transactions and cause them to hang. This property + specifies the delay, in usecs, introduced between transactions to account + for the time required by the EC to get back into a state in which new data + can be accepted. + Required properties (LPC): - compatible: "google,cros-ec-lpc" - reg: List of (IO address, size) pairs defining the interface uses |