[HELP] ipmi-kcs didn't work
Jae Hyun Yoo
jae.hyun.yoo at linux.intel.com
Thu Dec 6 01:54:49 AEDT 2018
On 12/4/2018 7:04 PM, Ryan Chen wrote:
> Hello Jae,
> Yes, ESPICLK should be the same flag.
Thanks Ryan for the confirmation. We checked that LCLK gate can be
opened by enabling lpc-ctrl node which has clock enabling code in
itself. ESPICLK gate could be opened using the same way, I believe.
> On 12/4/18, 7:44 AM, "Jae Hyun Yoo" <jae.hyun.yoo at linux.intel.com> wrote:
> On 12/4/2018 12:18 AM, Ryan Chen wrote:
> > Hello Jae,
> > ASPEED LPC IP HW block have serval clk input.
> > Most important is LCLK is come from LPC Host.
> > The others is not controllable by register.
> > Ryan
> Hi Ryan,
> Thanks for the information. So clock source of LCLK is from external
> usually from PCH, means that it doesn't have any parent dependency
> within BMC. In this case, we need to mark CLK_IS_CRITICAL flag to enable
> it. Also, we should mark the flag for ESPICLK too because eSPI is
> sharing the same interface with LPC.
> I'll make and upstream a patch.
> But I am able to enable clock through lpc-ctrl in dts. Which does same thing enabling clock for lpc. I don't think we need this patch.
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