From mboxrd@z Thu Jan 1 00:00:00 1970 From: santosh.shilimkar@ti.com (Santosh Shilimkar) Date: Mon, 11 Mar 2013 11:08:21 +0530 Subject: [PATCH 4/8] memory: emif: Handle devices which are not rated for >85C In-Reply-To: <1362978365-5593-5-git-send-email-lokeshvutla@ti.com> References: <1362978365-5593-1-git-send-email-lokeshvutla@ti.com> <1362978365-5593-5-git-send-email-lokeshvutla@ti.com> Message-ID: <513D6DCD.20507@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Monday 11 March 2013 10:36 AM, Lokesh Vutla wrote: > From: Nishanth Menon > > 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 > Signed-off-by: Nishanth Menon > Signed-off-by: Lokesh Vutla > --- Thanks for the fix. Acked-by: Santosh Shilimkar