samples: usb: uac2_implicit: Allow using 8 channels

Signed-off-by: Adam Kondraciuk <[email protected]>

Author: adamkondraciuk

samples/subsys/usb/uac2_implicit_feedback/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

@@ -41,7 +41,7 @@ i2s_rxtx: &tdm130 {
 	reserved-memory {
 		cpuflpr_dma_region: memory@2fc12e00 {
 			compatible = "nordic,owned-memory", "zephyr,memory-region";
-			reg = <0x2fc12e00 512>;
+			reg = <0x2fc12e00 1024>;
 			status = "okay";
 			#memory-region-cells = <0>;
 			nordic,access = <NRF_OWNER_ID_APPLICATION NRF_PERM_RW>;

samples/subsys/usb/uac2_implicit_feedback/flpr/boards/nrf54h20dk_nrf54h20_cpuflpr.overlay

@@ -8,7 +8,7 @@
 	reserved-memory {
 		cpuflpr_dma_region: memory@2fc12e00 {
 			compatible = "nordic,owned-memory", "zephyr,memory-region";
-			reg = <0x2fc12e00 512>;
+			reg = <0x2fc12e00 1024>;
 			status = "okay";
 			#memory-region-cells = <0>;
 			nordic,access = <NRF_OWNER_ID_APPLICATION NRF_PERM_RW>;

samples/subsys/usb/uac2_implicit_feedback/flpr/src/main.c

@@ -10,7 +10,7 @@
 LOG_MODULE_REGISTER(main, 1);
 /* === BUFFERS === */
 /* buffers configuration */
-#define ISO_IN_CH_CNT  4
+#define ISO_IN_CH_CNT  8
 #define ISO_OUT_CH_CNT 2
 #define TDM_WORD_SIZE 32
 
@@ -390,9 +390,11 @@ static void tdm_set_tx_ptr(void)
 
 static void tdm_start(void)
 {
+	bool sck_bypass = (SCK_DIV_VALUE > 0x80000000) ? (true) : (false);
+
 	nrf_tdm_enable(NRF_TDM130);
 	nrf_tdm_configure(NRF_TDM130, &m_cfg);
-	nrf_tdm_sck_configure(NRF_TDM130, NRF_TDM_SRC_ACLK, false);
+	nrf_tdm_sck_configure(NRF_TDM130, NRF_TDM_SRC_ACLK, sck_bypass);
 	nrf_tdm_mck_configure(NRF_TDM130, NRF_TDM_SRC_ACLK, false);
 	nrf_tdm_event_clear(NRF_TDM130, NRF_TDM_EVENT_RXPTRUPD);
 	nrf_tdm_event_clear(NRF_TDM130, NRF_TDM_EVENT_TXPTRUPD);