samd_sercom: Specify the sercom explicitly in a config option

Do not infer the sercom from the config section name, as that
prevents one from using SPI buses on multiple samd mcus.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 9 insertions, 5 deletions

diff --git a/docs/Config_Reference.md b/docs/Config_Reference.md
index 94b8d88f..f271d8d5 100644
--- a/docs/Config_Reference.md
+++ b/docs/Config_Reference.md
@@ -3793,13 +3793,17 @@ i2c_address:
 ## [samd_sercom]
 
 SAMD SERCOM configuration to specify which pins to use on a given
-SERCOM. One may define one section with the "samd_sercom" prefix per
-SERCOM available. Each SERCOM must be configured prior to using it as
-SPI or I2C peripheral. Place this config section above any other
-section that makes use of SPI or I2C buses.
+SERCOM. One may define any number of sections with a "samd_sercom"
+prefix. Each SERCOM must be configured prior to using it as SPI or I2C
+peripheral. Place this config section above any other section that
+makes use of SPI or I2C buses.
 
 ```
-[samd_sercom sercom0]
+[samd_sercom my_sercom]
+sercom:
+#   The name of the sercom bus to configure in the micro-controller.
+#   Available names are "sercom0", "sercom1", etc.. This parameter
+#   must be provided.
 tx_pin:
 #   MOSI pin for SPI communication, or SDA (data) pin for I2C
 #   communication. The pin must have a valid pinmux configuration