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Diffstat (limited to 'src/drivers/amd/i2s_machine_dev/chip.h')
-rw-r--r--src/drivers/amd/i2s_machine_dev/chip.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/drivers/amd/i2s_machine_dev/chip.h b/src/drivers/amd/i2s_machine_dev/chip.h
index 5d3a423b4363..0ca00a842420 100644
--- a/src/drivers/amd/i2s_machine_dev/chip.h
+++ b/src/drivers/amd/i2s_machine_dev/chip.h
@@ -12,7 +12,10 @@ struct drivers_amd_i2s_machine_dev_config {
/* ACPI _UID */
unsigned int uid;
- /* DMIC select GPIO (required) */
+ /*
+ * DMIC select GPIO (optional). Needs to be configured if the audio framework cannot use
+ * all the mics and select the right channel based on the use-case.
+ */
struct acpi_gpio dmic_select_gpio;
};