From: Tero Kristo <t-kristo@ti.com>
To: Jon Hunter <jon-hunter@ti.com>
Cc: linux-omap@vger.kernel.org, khilman@ti.com, paul@pwsan.com,
Rajendra Nayak <rnayak@ti.com>,
Santosh Shilimkar <santosh.shilimkar@ti.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 11/19] ARM: OMAP4: PM: save/restore CM L3INSTR registers when MPU hits OSWR/OFF mode
Date: Wed, 25 Apr 2012 10:31:50 +0300 [thread overview]
Message-ID: <1335339110.2149.108.camel@sokoban> (raw)
In-Reply-To: <4F96E9A2.8080908@ti.com>
On Tue, 2012-04-24 at 12:57 -0500, Jon Hunter wrote:
> Hi Tero,
>
> On 04/20/2012 04:33 AM, Tero Kristo wrote:
> > From: Rajendra Nayak <rnayak@ti.com>
> >
> > On HS devices on the way out of MPU OSWR and OFF ROM code wrongly
> > overwrites the CM L3INSTR registers. So to avoid this, save them and
> > restore on the way out from MPU OSWR/OFF.
>
> This appears to be an errata. So, it would be good to state explicitly
> here that all revisions of all omap4 devices are impacted by this
> errata. The code implies this but for documentation purposes it would be
> worth stating.
Okay, I'll add some extra beef here.
-Tero
next prev parent reply other threads:[~2012-04-25 7:31 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-20 9:33 [PATCH 00/19] ARM: OMAP4 device off support Tero Kristo
2012-04-20 9:33 ` [PATCH 01/19] ARM: OMAP4: PM: save/restore all DPLL settings in OFF mode Tero Kristo
2012-04-23 16:09 ` Jon Hunter
2012-04-25 7:33 ` Tero Kristo
2012-04-25 15:12 ` Jon Hunter
2012-05-04 19:22 ` Tony Lindgren
2012-05-02 10:10 ` Bedia, Vaibhav
2012-05-02 10:18 ` Shilimkar, Santosh
2012-05-02 10:55 ` Bedia, Vaibhav
2012-05-02 11:00 ` Shilimkar, Santosh
2012-05-02 11:40 ` Bedia, Vaibhav
2012-05-02 11:46 ` Shilimkar, Santosh
2012-05-02 11:55 ` Bedia, Vaibhav
2012-05-02 11:47 ` Menon, Nishanth
2012-05-02 11:55 ` Bedia, Vaibhav
2012-05-02 11:58 ` Shilimkar, Santosh
2012-05-02 12:10 ` Bedia, Vaibhav
2012-04-20 9:33 ` [PATCH 02/19] ARM: OMAP4: PM: save/restore all CM1/2 " Tero Kristo
2012-05-09 23:27 ` Kevin Hilman
2012-05-11 14:30 ` Tero Kristo
2012-04-20 9:33 ` [PATCH 03/19] ARM: OMAP4: PM: powerdomain: Add HWSAR flag to L3INIT Tero Kristo
2012-04-20 9:33 ` [PATCH 04/19] ARM: OMAP4: Add SAR ROM base address Tero Kristo
2012-04-20 9:33 ` [PATCH 05/19] ARM: OMAP4: PM: Add SAR backup support towards device OFF Tero Kristo
2012-04-24 16:35 ` Tony Lindgren
2012-04-25 7:18 ` Tero Kristo
2012-04-20 9:33 ` [PATCH 06/19] ARM: OMAP4: Auto generate SAR layout contents Tero Kristo
2012-04-24 16:37 ` Tony Lindgren
2012-04-20 9:33 ` [PATCH 07/19] ARM: OMAP4: SAR: generate overwrite data based on SAR ROM contents Tero Kristo
2012-04-20 9:33 ` [PATCH 08/19] ARM: OMAP4: PM: Add device-off support Tero Kristo
2012-04-24 17:46 ` Jon Hunter
2012-04-25 7:30 ` Tero Kristo
2012-04-20 9:33 ` [PATCH 09/19] ARM: OMAP4: PM: add errata support Tero Kristo
2012-04-20 9:33 ` [PATCH 10/19] ARM: OMAP4: PM: Work-around for ROM code BUG of IVAHD/TESLA Tero Kristo
2012-04-24 17:50 ` Jon Hunter
2012-04-25 7:31 ` Tero Kristo
2012-04-20 9:33 ` [PATCH 11/19] ARM: OMAP4: PM: save/restore CM L3INSTR registers when MPU hits OSWR/OFF mode Tero Kristo
2012-04-24 17:57 ` Jon Hunter
2012-04-25 7:31 ` Tero Kristo [this message]
2012-04-20 9:33 ` [PATCH 12/19] ARM: OMAP4: PM: update ROM return address for OSWR and OFF Tero Kristo
2012-04-24 16:39 ` Tony Lindgren
2012-04-25 7:24 ` Tero Kristo
2012-04-20 9:33 ` [PATCH 13/19] ARM: OMAP4: PM: Mark the PPI and SPI interrupts as non-secure for GP Tero Kristo
2012-04-20 9:33 ` [PATCH 14/19] ARM: OMAP4: wakeupgen: enable clocks for save_secure_all Tero Kristo
2012-04-20 9:33 ` [PATCH 15/19] ARM: OMAP4430: PM: workaround for DDR corruption on second CS Tero Kristo
2012-04-24 18:22 ` Jon Hunter
2012-04-25 7:26 ` Tero Kristo
2012-04-25 7:59 ` Shilimkar, Santosh
2012-04-25 15:16 ` Jon Hunter
2012-04-26 6:19 ` Shilimkar, Santosh
2012-04-20 9:33 ` [PATCH 16/19] TEMP: ARM: OMAP4: prevent voltage transitions Tero Kristo
2012-04-20 9:33 ` [PATCH 17/19] ARM: OMAP4: put cpu1 back to sleep if no wake request Tero Kristo
2012-04-20 9:33 ` [PATCH 18/19] ARM: OMAP4460: wakeupgen: set GIC_CPU0 backup status flag always Tero Kristo
2012-04-20 9:33 ` [PATCH 19/19] ARM: OMAP4: powerdomain: update mpu / core off counters during device off Tero Kristo
2012-04-20 12:20 ` [PATCH 00/19] ARM: OMAP4 device off support T Krishnamoorthy, Balaji
2012-04-20 12:58 ` Tero Kristo
2012-04-20 13:55 ` Kevin Hilman
2012-04-20 14:43 ` Tero Kristo
2012-04-20 14:51 ` Datta, Shubhrajyoti
2012-04-20 15:07 ` Tero Kristo
2012-04-23 6:28 ` Shubhrajyoti Datta
2012-05-09 22:46 ` Kevin Hilman
2012-05-09 23:14 ` Russell King - ARM Linux
2012-05-10 9:47 ` Tero Kristo
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