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-rw-r--r--Documentation/acpi/gpio.md2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/acpi/gpio.md b/Documentation/acpi/gpio.md
index a3685b8cbb..d42042f36f 100644
--- a/Documentation/acpi/gpio.md
+++ b/Documentation/acpi/gpio.md
@@ -92,6 +92,7 @@ functions to return values. This means that the driver code should not
make any assumptions about the values in Local5, Local6 and Local7
variables.
+```
**Function** **Operation** **Return**
acpigen_soc_read_rx_gpio Generate ACPI AML code to Error = -1
read value of Rx in Local0. Success = 0
@@ -101,6 +102,7 @@ variables.
set Tx to 1. Success = 0
acpigen_soc_clear_tx_gpio Generate ACPI AML code to Error = -1
set Tx to 0. Success = 0
+```
Ideally, the operation column in the above table should use one or
more functions implemented by the platform in AML code library (like