[nrf fromtree] tests: drivers: i2s: Add tests at typical audio sample rates

Add short transfer test at 8000, 16000, 32000, 44100, 48000, 88200
and 96000 frame clock frequency.

Add KConfigs to skip test cases based on value of sample rate.

Add configuration for nrf5340dk where i2s peripheral is clocked
from ACLK.

Signed-off-by: Sebastian Głąb <[email protected]>
(cherry picked from commit c42513a)

Author: nordic-segl

tests/drivers/i2s/i2s_speed/Kconfig

@@ -37,3 +37,45 @@ config I2S_TEST_ALLOWED_DATA_OFFSET
 	help
 	  Maximum allowed offset between sent and received samples. Non-zero
 	  value of this option may be needed when GPIO loopback is used.
+
+config I2S_TEST_SKIP_SAMPLERATE_8000
+	bool "Skip short transfer tests at 8000 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 8000 samples per second
+	  will be skipped.
+
+config I2S_TEST_SKIP_SAMPLERATE_16000
+	bool "Skip short transfer tests at 16000 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 16000 samples per second
+	  will be skipped.
+
+config I2S_TEST_SKIP_SAMPLERATE_32000
+	bool "Skip short transfer tests at 32000 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 32000 samples per second
+	  will be skipped.
+
+config I2S_TEST_SKIP_SAMPLERATE_44100
+	bool "Skip short transfer tests at 44100 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 44100 samples per second
+	  will be skipped.
+
+config I2S_TEST_SKIP_SAMPLERATE_48000
+	bool "Skip short transfer tests at 48000 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 48000 samples per second
+	  will be skipped.
+
+config I2S_TEST_SKIP_SAMPLERATE_88200
+	bool "Skip short transfer tests at 88200 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 88200 samples per second
+	  will be skipped.
+
+config I2S_TEST_SKIP_SAMPLERATE_96000
+	bool "Skip short transfer tests at 96000 samples per socond"
+	help
+	  When set to 'y', short transfer tests at 96000 samples per second
+	  will be skipped.

tests/drivers/i2s/i2s_speed/boards/nrf5340dk_nrf5340_cpuapp_aclk.overlay

@@ -0,0 +1,9 @@
+/* Drive i2s peripheral from ACLK. */
+
+&clock {
+	hfclkaudio-frequency = <11289600>;
+};
+
+&i2s0 {
+	clock-source = "ACLK";
+};