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6 changes: 2 additions & 4 deletions hardware/raspberrypi/spi/README.md
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Expand Up @@ -162,11 +162,9 @@ The default Linux driver is now the standard spi-bcm2835.

SPI0 is disabled by default. To enable it, use [raspi-config](../../../configuration/raspi-config.md), or ensure the line `dtparam=spi=on` isn't commented out in `/boot/config.txt`. By default it uses 2 chip select lines, but this can be reduced to 1 using `dtoverlay=spi0-1cs`. `dtoverlay=spi0-2cs` also exists, and without any parameters it is equivalent to `dtparam=spi=on`.

To enable SPI1, you can use 1, 2 or 3 chip select lines, adding in each case:
To enable SPI1, you can use 1, 2 or 3 chip select lines, adding in each case where n is number of chip select lines:
<pre>
dtoverlay=spi1-1cs #1 chip select
dtoverlay=spi1-2cs #2 chip select
dtoverlay=spi1-3cs #3 chip select
dtoverlay=spi1-<n>cs
</pre>
to /boot/config.txt file. Similar overlays exist for SPI2, SPI3, SPI4, SPI5 and SPI6.

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