topic i.MX 8M DMA Support for Cortex-M4 in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/i-MX-8M-DMA-Support-for-Cortex-M4/m-p/749563#M116655 <HTML><HEAD></HEAD><BODY><P>Greetings,</P><P></P><P>In the i.MX6 and i.MX7 processors&nbsp;the SDMA controller is a shared peripheral between the Cortex-A and Cortex-M processors; but Linux is essentially crippled without DMA; so the Cortex-M effectively can never use DMA while using Linux.</P><P></P><P>In the i.MX 8M block diagram it shows 2x SDMA controllers.&nbsp;Will it be possible to have one of these available for the Cortex-M processor; or will Linux demand both of them?</P><P></P><P>Many thanks,</P><P>&nbsp;- Malcolm</P></BODY></HTML> Wed, 27 Dec 2017 16:37:03 GMT malcolmnixon 2017-12-27T16:37:03Z i.MX 8M DMA Support for Cortex-M4 https://community.nxp.com/t5/i-MX-Processors/i-MX-8M-DMA-Support-for-Cortex-M4/m-p/749563#M116655 <HTML><HEAD></HEAD><BODY><P>Greetings,</P><P></P><P>In the i.MX6 and i.MX7 processors&nbsp;the SDMA controller is a shared peripheral between the Cortex-A and Cortex-M processors; but Linux is essentially crippled without DMA; so the Cortex-M effectively can never use DMA while using Linux.</P><P></P><P>In the i.MX 8M block diagram it shows 2x SDMA controllers.&nbsp;Will it be possible to have one of these available for the Cortex-M processor; or will Linux demand both of them?</P><P></P><P>Many thanks,</P><P>&nbsp;- Malcolm</P></BODY></HTML> Wed, 27 Dec 2017 16:37:03 GMT https://community.nxp.com/t5/i-MX-Processors/i-MX-8M-DMA-Support-for-Cortex-M4/m-p/749563#M116655 malcolmnixon 2017-12-27T16:37:03Z Re: i.MX 8M DMA Support for Cortex-M4 https://community.nxp.com/t5/i-MX-Processors/i-MX-8M-DMA-Support-for-Cortex-M4/m-p/749564#M116656 <HTML><HEAD></HEAD><BODY><P>Unfortunately we are not able to talk details about the i.MX8M since it is not release yet, and can be subject to changes, but at the moment, I can said that both SDMA are not intended for the M4.</P><P></P><P>Merry Christmas</P></BODY></HTML> Thu, 28 Dec 2017 20:05:20 GMT https://community.nxp.com/t5/i-MX-Processors/i-MX-8M-DMA-Support-for-Cortex-M4/m-p/749564#M116656 jamesbone 2017-12-28T20:05:20Z