https://community.nxp.com/t5/i-MX-Processors/SAI2-permanent-clock/m-p/2046620#M234155 <P><SPAN>We are using SAI2 interface of IMX8MP to connect to Audio transceiver. Audio transceiver has requirement of permament Frame Sync clock (TXFS) on I2S interface. If we use a dummy codec for the sound card, we can see correctly the clock signals coming out this interface&nbsp;whenever we play a sound from user space. If we don't play any sound, the clocks are suspended. </SPAN></P><P><SPAN>We tried to comment out&nbsp;clk_disable_unprepare in fsl_sai.c but it did not helped. We need to have this clock always present (since boot-up).&nbsp;Does anyone know how to get this feature?</SPAN></P> Tue, 18 Feb 2025 19:43:23 GMT lfulek 2025-02-18T19:43:23Z https://community.nxp.com/t5/i-MX-Processors/SAI2-permanent-clock/m-p/2046620#M234155 <P><SPAN>We are using SAI2 interface of IMX8MP to connect to Audio transceiver. Audio transceiver has requirement of permament Frame Sync clock (TXFS) on I2S interface. If we use a dummy codec for the sound card, we can see correctly the clock signals coming out this interface&nbsp;whenever we play a sound from user space. If we don't play any sound, the clocks are suspended. </SPAN></P><P><SPAN>We tried to comment out&nbsp;clk_disable_unprepare in fsl_sai.c but it did not helped. We need to have this clock always present (since boot-up).&nbsp;Does anyone know how to get this feature?</SPAN></P> Tue, 18 Feb 2025 19:43:23 GMT https://community.nxp.com/t5/i-MX-Processors/SAI2-permanent-clock/m-p/2046620#M234155 lfulek 2025-02-18T19:43:23Z