Messages in this thread | | | Date | Mon, 11 Mar 2013 11:08:21 +0530 | From | Santosh Shilimkar <> | Subject | Re: [PATCH 4/8] memory: emif: Handle devices which are not rated for >85C |
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On Monday 11 March 2013 10:36 AM, Lokesh Vutla wrote: > From: Nishanth Menon <nm@ti.com> > > As per JESD209-2E specification for LPDDR2, > http://www.jedec.org/standards-documents/results/jesd209-2E > Table 73, LPDDR2 memories come in two flavors - Standard and > Extended. The Standard types can operate from -25C to +85C > However, beyond that and upto +105C can only be supported by > Extended types. > right.
> Unfortunately, it seems there is no info in MR0(device info) or > MR[1,2](device feature) for run time detection of this capability > as far as seen on the spec. Hence, we provide a custom_config > flag to be populated by platforms which have these "extended" > type memories. > > For the "Standard" memories, we need to consider MR4 notifications > of temperature triggers >85C as equivalent to thermal shutdown > events (equivalent to Spec specified thermal shutdown events for > "extended" parts). > Make sense.
> Reported-by: Richard Woodruff <r-woodruff2@ti.com> > Signed-off-by: Nishanth Menon <nm@ti.com> > Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> > --- Thanks for the fix. Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
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