Hi, 2015-12-14 2:29 GMT+01:00 Rob Herring <robh@xxxxxxxxxx>: > On Mon, Dec 14, 2015 at 12:04:11AM +0100, Marcus Weseloh wrote: >> Adds a new property "spi-word-wait-ns" to the spi-bus binding that allows [...] >> diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt >> index bbaa857..2d6034f 100644 >> --- a/Documentation/devicetree/bindings/spi/spi-bus.txt >> +++ b/Documentation/devicetree/bindings/spi/spi-bus.txt >> @@ -61,6 +61,8 @@ 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-word-wait-ns - (optional) Hardware based delay between transmission of >> + words in nanoseconds > > Could be a software delay if the h/w doesn't support delays. Of course, I was still trapped in my sun4i specific thinking. Will remove the hardware reference. [...] >> + /* Setup wait time between words */ >> + of_property_read_u32(spi->dev.of_node, "spi-word-wait-ns", >> + &wait_ns); > > Read this in probe and save the value rather than fetching every > transfer. But this is a slave property I'm using here. If I read and store it in probe in the spi-sun4i driver, I won't have access to the slave node property, will I? Cheers, Marcus -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html