From: jon-hunter@ti.com (Jon Hunter)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 11/19] ARM: OMAP4: PM: save/restore CM L3INSTR registers when MPU hits OSWR/OFF mode
Date: Tue, 24 Apr 2012 12:57:54 -0500 [thread overview]
Message-ID: <4F96E9A2.8080908@ti.com> (raw)
In-Reply-To: <1334914432-26456-12-git-send-email-t-kristo@ti.com>
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.
Cheers
Jon
next prev parent reply other threads:[~2012-04-24 17:57 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 [this message]
2012-04-25 7:31 ` Tero Kristo
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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