i.MX ProcessorsのトピックRe: IMX8M General Purpose Fuses https://community.nxp.com/t5/i-MX-Processors/IMX8M-General-Purpose-Fuses/m-p/1084280#M159023 <HTML><HEAD></HEAD><BODY><P>Hello Brendan,</P><P></P><P>They are uses for Fuses, there is a way to access/burn the fuses using sysfs. The OCOTP fuses are available at <STRONG>/sys/fsl_otp</STRONG>.To enable this you need to enable the "<SPAN style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;">CONFIG_FSL_OTP</SPAN>" in Linux.</P><P>You can write one script containing the command <STRONG>" echo "value_to_burn_fuse" &gt; /sys/fsl_otp/&lt;fuse_register&gt; ", </STRONG>which you have to run automatically after boot<STRONG>.</STRONG></P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>You can also refer <A class="" data-content-finding="Community" href="https://community.nxp.com/external-link.jspa?url=https%3A%2F%2Fimxdev.gitlab.io%2Ftutorial%2FBurning_eFuses_on_i.MX%2F" rel="nofollow" target="_blank">this</A> link for various ways to burn the fuses.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P style="min-height: 8pt; padding: 0px;">Regards</P></BODY></HTML> Fri, 29 May 2020 14:06:49 GMT Bio_TICFSL 2020-05-29T14:06:49Z IMX8M General Purpose Fuses https://community.nxp.com/t5/i-MX-Processors/IMX8M-General-Purpose-Fuses/m-p/1084279#M159022 <HTML><HEAD></HEAD><BODY><P>Are the general purpose fuses free for user usage? When I read their values on a fresh IMX8M it appears quite a few of the bits had already been blown (ex. OCOTP_HW_OCOTP_GP10 was set to 0xd503201f). If they aren't free for user usage, what are they used for?</P><P></P><P>Thanks and Regards</P></BODY></HTML> Thu, 28 May 2020 17:38:28 GMT https://community.nxp.com/t5/i-MX-Processors/IMX8M-General-Purpose-Fuses/m-p/1084279#M159022 brendankrieger 2020-05-28T17:38:28Z Re: IMX8M General Purpose Fuses https://community.nxp.com/t5/i-MX-Processors/IMX8M-General-Purpose-Fuses/m-p/1084280#M159023 <HTML><HEAD></HEAD><BODY><P>Hello Brendan,</P><P></P><P>They are uses for Fuses, there is a way to access/burn the fuses using sysfs. The OCOTP fuses are available at <STRONG>/sys/fsl_otp</STRONG>.To enable this you need to enable the "<SPAN style="font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: #ffffff;">CONFIG_FSL_OTP</SPAN>" in Linux.</P><P>You can write one script containing the command <STRONG>" echo "value_to_burn_fuse" &gt; /sys/fsl_otp/&lt;fuse_register&gt; ", </STRONG>which you have to run automatically after boot<STRONG>.</STRONG></P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>You can also refer <A class="" data-content-finding="Community" href="https://community.nxp.com/external-link.jspa?url=https%3A%2F%2Fimxdev.gitlab.io%2Ftutorial%2FBurning_eFuses_on_i.MX%2F" rel="nofollow" target="_blank">this</A> link for various ways to burn the fuses.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P style="min-height: 8pt; padding: 0px;">Regards</P></BODY></HTML> Fri, 29 May 2020 14:06:49 GMT https://community.nxp.com/t5/i-MX-Processors/IMX8M-General-Purpose-Fuses/m-p/1084280#M159023 Bio_TICFSL 2020-05-29T14:06:49Z