From: santosh.shilimkar@ti.com (Santosh Shilimkar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/8] memory: emif: Handle devices which are not rated for >85C
Date: Mon, 11 Mar 2013 11:08:21 +0530 [thread overview]
Message-ID: <513D6DCD.20507@ti.com> (raw)
In-Reply-To: <1362978365-5593-5-git-send-email-lokeshvutla@ti.com>
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>
next prev parent reply other threads:[~2013-03-11 5:38 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-11 5:05 [PATCH 0/8] memory: emif: miscellaneous bug fixes for EMIF driver Lokesh Vutla
2013-03-11 5:05 ` [PATCH 1/8] memory: emif: Correct the lpmode timeout calculation Lokesh Vutla
2013-03-11 5:34 ` Santosh Shilimkar
2013-03-11 5:05 ` [PATCH 2/8] memory: emif: setup LP settings on freq update Lokesh Vutla
2013-03-11 5:34 ` Santosh Shilimkar
2013-03-11 5:06 ` [PATCH 3/8] memory: emif: handle overflow for timing for LP mode Lokesh Vutla
2013-03-11 5:35 ` Santosh Shilimkar
2013-03-11 5:06 ` [PATCH 4/8] memory: emif: Handle devices which are not rated for >85C Lokesh Vutla
2013-03-11 5:38 ` Santosh Shilimkar [this message]
2013-03-11 5:06 ` [PATCH 5/8] memory: emif: use restart if power_off not present when out of spec Lokesh Vutla
2013-03-11 5:39 ` Santosh Shilimkar
2013-03-11 5:06 ` [PATCH 6/8] memory: emif: fix timings initialization issue Lokesh Vutla
2013-03-11 5:44 ` Santosh Shilimkar
2013-03-11 5:06 ` [PATCH 7/8] memory: emif: errata i743: Prohibit usage of Power-Down mode Lokesh Vutla
2013-03-11 5:50 ` Santosh Shilimkar
2013-03-11 11:10 ` Lokesh Vutla
2013-03-11 5:06 ` [PATCH 8/8] memory: emif: Load the correct custom config values from dt Lokesh Vutla
2013-03-11 5:51 ` Santosh Shilimkar
2013-03-15 18:08 ` [PATCH 0/8] memory: emif: miscellaneous bug fixes for EMIF driver Greg KH
2013-03-16 6:13 ` Lokesh Vutla
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