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<p class="MsoNormal">Thank you, Jason. Could you share with me any example of defining those GPIOs in device tree for x86-power-control? I can’t find any in aspeed-bmc-intel-s2600wf.dts.</p>
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<p class="MsoNormal">Thanks.<o:p></o:p></p>
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<p class="MsoNormal">Best regards,<o:p></o:p></p>
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<p class="MsoNormal">Kun Zhao<o:p></o:p></p>
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<p class="MsoNormal"> <a href="mailto:zkxz@hotmail.com">zkxz@hotmail.com</a><o:p></o:p></p>
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:jason.m.bills@linux.intel.com">Bills, Jason M</a><br>
<b>Sent: </b>Friday, August 7, 2020 10:12 AM<br>
<b>To: </b><a href="mailto:openbmc@lists.ozlabs.org">openbmc@lists.ozlabs.org</a><br>
<b>Subject: </b>Re: system power control</p>
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<br>
On 8/6/2020 11:43 PM, Zhao Kun wrote:<br>
> Hi,<br>
> <br>
> I’m new to learn how to make OpenBMC work on a X86 based system. <br>
> Currently I met a problem of mapping the GPIOs about power <br>
> on/off/reset/status into OpenBMC logic. I understand when user issue a <br>
> power on request through any user interfaces like RESTful, IPMI, etc., <br>
> some service (phosphor-state-manager?) will be triggered to check <br>
> current status and roll out corresponding systemd services to do the <br>
> job. (please correct me if I’m wrong)<br>
> <br>
> But I’m just confused on how those services actually toggle or check the <br>
> GPIOs, there seems be many choices,<br>
> <br>
> 1. Device tree?<br>
> 2. Using Workbook gpio_defs.json?<br>
> 3. Create some services calling platform specific scripts to operate<br>
> GPIO or I2C devices?<br>
> 4. Using x86-power-control?<br>
> <br>
> So what’s the most recommended way to do it? Really appreciated If <br>
> anyone can share some lights.<br>
On Intel reference platforms, we use x86-power-control and configure the <br>
GPIO names using device tree.<br>
<br>
> <br>
> I thought there must be a mechanism to consume some kind of <br>
> configuration file as the hardware abstraction layer. So I guess it <br>
> might be gpio_defs.json or device tree.<br>
> <br>
> Thanks.<br>
> <br>
> Best regards,<br>
> <br>
> Kun Zhao<br>
> <br>
> /*<br>
> <br>
> zkxz@hotmail.com <<a href="mailto:zkxz@hotmail.com">mailto:zkxz@hotmail.com</a>><br>
> <br>
> */<br>
> <o:p></o:p></p>
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