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authorAhmad Fatoum <a.fatoum@pengutronix.de>2020-11-10 16:34:29 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2020-11-13 08:53:40 +0100
commit4fd3686373e842ac3e43b53ca5280b38e5a3d96b (patch)
tree05de1fe191d1fbf7f85d155a26541ea04dd28094 /include
parentd0f535b6a60a32683336b834837840615d0891f8 (diff)
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doc: add note about characters like hyphens in variable names
The mismatch between the allowed characters in shell variables and device parameters is a common pitfall, especially because device tree node names often have hyphens in them, which is disallowed by hush. While such variables can be read by the ${variable-example}, setting them is only possible with the setenv command. Reflect this in the documentation. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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