<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word"> <div class="WordSection1"> <p class="msipheader251902e5" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#317100">[AMD Public Use]</span><o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">As far as I know, refclk is fixed at 25M for TACH; no need to consider ASIC refclk.<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Thanks,<o:p></o:p></p> <p class="MsoNormal">Lijo<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal"><b>From:</b> amd-gfx <amd-gfx-bounces@lists.freedesktop.org> <b>On Behalf Of </b>Deucher, Alexander<br> <b>Sent:</b> Wednesday, January 27, 2021 10:05 AM<br> <b>To:</b> Chen, Guchun <Guchun.Chen@amd.com>; Quan, Evan <Evan.Quan@amd.com>; Alex Deucher <alexdeucher@gmail.com>; amd-gfx@lists.freedesktop.org<br> <b>Subject:</b> Re: [PATCH] drm/amdgpu/pm/smu11: fix static fan speed readback<o:p></o:p></p> </div> </div> <p class="MsoNormal"><o:p> </o:p></p> <p style="margin:15.0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#317100">[AMD Public Use]<o:p></o:p></span></p> <p class="MsoNormal"><o:p> </o:p></p> <div> <p style="margin:15.0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#317100">[AMD Public Use]<o:p></o:p></span></p> <p class="MsoNormal"><o:p> </o:p></p> <div> <div> <p class="MsoNormal"><span style="font-size:12.0pt;color:black">Is the xclk really 25 Mhz or is there some divider for the fan stuff? Changing the xclk value will affect other places where this is used.<o:p></o:p></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12.0pt;color:black">Alex<o:p></o:p></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div> <div class="MsoNormal" align="center" style="text-align:center"> <hr size="2" width="98%" align="center"> </div> <div id="divRplyFwdMsg"> <p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Chen, Guchun <<a href="mailto:Guchun.Chen@amd.com">Guchun.Chen@amd.com</a>><br> <b>Sent:</b> Tuesday, January 26, 2021 11:33 PM<br> <b>To:</b> Quan, Evan <<a href="mailto:Evan.Quan@amd.com">Evan.Quan@amd.com</a>>; Alex Deucher <<a href="mailto:alexdeucher@gmail.com">alexdeucher@gmail.com</a>>; <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a> <<a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a>><br> <b>Cc:</b> Deucher, Alexander <<a href="mailto:Alexander.Deucher@amd.com">Alexander.Deucher@amd.com</a>><br> <b>Subject:</b> RE: [PATCH] drm/amdgpu/pm/smu11: fix static fan speed readback</span> <o:p></o:p></p> <div> <p class="MsoNormal"> <o:p></o:p></p> </div> </div> <div> <div> <p class="MsoNormal">[AMD Public Use]<br> <br> In soc15_get_xclk, we have independent handling for CHIP_RAVEN case.<br> <br> If (adev->asic_type == CHIP_RAVEN)<br> return reference_clock / 4;<br> <br> I am not sure if it's better to squash the patch into the asic specific function? Then we have one unified place to handle it.<br> <br> Regards,<br> Guchun<br> <br> -----Original Message-----<br> From: amd-gfx <<a href="mailto:amd-gfx-bounces@lists.freedesktop.org">amd-gfx-bounces@lists.freedesktop.org</a>> On Behalf Of Quan, Evan<br> Sent: Wednesday, January 27, 2021 11:46 AM<br> To: Alex Deucher <<a href="mailto:alexdeucher@gmail.com">alexdeucher@gmail.com</a>>; <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br> Cc: Deucher, Alexander <<a href="mailto:Alexander.Deucher@amd.com">Alexander.Deucher@amd.com</a>><br> Subject: RE: [PATCH] drm/amdgpu/pm/smu11: fix static fan speed readback<br> <br> [AMD Official Use Only - Internal Distribution Only]<br> <br> [AMD Official Use Only - Internal Distribution Only]<br> <br> Actually after switching to retrieve fan speed from metrics table always, this API is not used any more.<br> Maybe we can just drop it. Either way the patch is reviewed-by: Evan Quan <<a href="mailto:evan.quan@amd.com">evan.quan@amd.com</a>><br> <br> BR<br> Evan<br> -----Original Message-----<br> From: amd-gfx <<a href="mailto:amd-gfx-bounces@lists.freedesktop.org">amd-gfx-bounces@lists.freedesktop.org</a>> On Behalf Of Alex Deucher<br> Sent: Wednesday, January 27, 2021 2:17 AM<br> To: <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br> Cc: Deucher, Alexander <<a href="mailto:Alexander.Deucher@amd.com">Alexander.Deucher@amd.com</a>><br> Subject: [PATCH] drm/amdgpu/pm/smu11: fix static fan speed readback<br> <br> The xclk needs to be divided by 4.<br> <br> Fixes: acab02c1af43d3 ("drm/amdgpu/pm/smu11: Fix fan set speed bug")<br> Signed-off-by: Alex Deucher <<a href="mailto:alexander.deucher@amd.com">alexander.deucher@amd.com</a>><br> ---<br> drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 6 +++++-<br> 1 file changed, 5 insertions(+), 1 deletion(-)<br> <br> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c<br> index 147efe12973c..36dac106ed4b 100644<br> --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c<br> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c<br> @@ -1245,7 +1245,11 @@ int smu_v11_0_get_fan_speed_rpm(struct smu_context *smu, if (!tach_period) return -EINVAL;<br> <br> -crystal_clock_freq = amdgpu_asic_get_xclk(adev);<br> +/*<br> + * crystal_clock_freq div by 4 is required since the fan control<br> + * module refers to 25MHz<br> + */<br> +crystal_clock_freq = amdgpu_asic_get_xclk(adev) / 4;<br> <br> tmp64 = (uint64_t)crystal_clock_freq * 60 * 10000; do_div(tmp64, (tach_period * 8));<br> --<br> 2.29.2<br> <br> _______________________________________________<br> amd-gfx mailing list<br> <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br> <a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Clijo.lazar%40amd.com%7C8cdef44e170e4198c00e08d8c27ce642%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637473189035661354%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=pfK0LTxZUBVlvvX3zs3DQjmtYyOJkNdFIBUGkTCyopg%3D&reserved=0">https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Cguchun.chen%40amd.com%7Ccacc23400e334530b87208d8c2760341%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637473159431451098%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=e%2BzrZgRQDkOb4ElNJNiLWP%2FHBM0cIQl4GwKFuYfvsP8%3D&reserved=0</a><br> _______________________________________________<br> amd-gfx mailing list<br> <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br> <a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Clijo.lazar%40amd.com%7C8cdef44e170e4198c00e08d8c27ce642%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637473189035671303%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=a%2BTTK%2BJ0YjbNe9irLE9GRgK0koyGYKfrtcMUR0wkvxs%3D&reserved=0">https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Cguchun.chen%40amd.com%7Ccacc23400e334530b87208d8c2760341%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637473159431461091%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=lp9Gu3pJ7GdDbF1BJNlIQr4Z0TCY%2BTVDGtDWzZ2bR2Q%3D&reserved=0</a><o:p></o:p></p> </div> </div> </div> </div> </div> </body> </html>