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Diffstat (limited to 'Documentation/spi/spi-summary')
| -rw-r--r-- | Documentation/spi/spi-summary | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/spi/spi-summary b/Documentation/spi/spi-summary index d1824b399b2d..b4d15e409cfe 100644 --- a/Documentation/spi/spi-summary +++ b/Documentation/spi/spi-summary @@ -181,6 +181,9 @@ shows up in sysfs in several locations: controller managing bus "B". All spiB.* devices share one physical SPI bus segment, with SCLK, MOSI, and MISO. + /sys/class/spi_master/spiB/num_chipselect ... exposes the maximum + number of chipselects a SPI master can support. + Note that the actual location of the controller's class state depends on whether you enabled CONFIG_SYSFS_DEPRECATED or not. At this time, the only class-specific state is the bus number ("B" in "spiB"), so |