* [PATCH 0/2] OMAP4460: cpuidle: Workaround for ROM bug because of CA9 r2pX GIC control register change
@ 2013-10-17 9:23 ` Grygorii Strashko
0 siblings, 0 replies; 5+ messages in thread
From: Grygorii Strashko @ 2013-10-17 9:23 UTC (permalink / raw)
To: linux-omap@vger.kernel.org, Tony Lindgren
Cc: linux-arm, open list, Kevin Hilman, Santosh Shilimkar,
Taras Kondratiuk
The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
"ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC control register change."
need to be applied not only when system is booting, but when
MPU hits OSWR state through CPUIdle too.
Now the same issue is reproduced on boards PandaES and Tablet/Blaze with
SOM OMAP4460 ES1.0 when CONFIG_CPU_IDLE is enabled.
- GIC distributor is disabled
- scheduling is not performed any more
Grygorii Strashko (2):
Revert "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context_state()"
ARM: OMAP4460: cpuidle: WA for ROM bug because of CA9 r2pX gic control register change
arch/arm/mach-omap2/common.h | 6 +++++
arch/arm/mach-omap2/cpuidle44xx.c | 35 +++++++++++++++++++++++++++--
arch/arm/mach-omap2/omap-mpuss-lowpower.c | 14 ++++++++++++
arch/arm/mach-omap2/omap4-common.c | 6 +++++
4 files changed, 59 insertions(+), 2 deletions(-)
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@linaro.org>
Regards,
-grygorii
--
1.7.9.5
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH 0/2] OMAP4460: cpuidle: Workaround for ROM bug because of CA9 r2pX GIC control register change
@ 2013-10-17 9:23 ` Grygorii Strashko
0 siblings, 0 replies; 5+ messages in thread
From: Grygorii Strashko @ 2013-10-17 9:23 UTC (permalink / raw)
To: linux-arm-kernel
The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
"ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC control register change."
need to be applied not only when system is booting, but when
MPU hits OSWR state through CPUIdle too.
Now the same issue is reproduced on boards PandaES and Tablet/Blaze with
SOM OMAP4460 ES1.0 when CONFIG_CPU_IDLE is enabled.
- GIC distributor is disabled
- scheduling is not performed any more
Grygorii Strashko (2):
Revert "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context_state()"
ARM: OMAP4460: cpuidle: WA for ROM bug because of CA9 r2pX gic control register change
arch/arm/mach-omap2/common.h | 6 +++++
arch/arm/mach-omap2/cpuidle44xx.c | 35 +++++++++++++++++++++++++++--
arch/arm/mach-omap2/omap-mpuss-lowpower.c | 14 ++++++++++++
arch/arm/mach-omap2/omap4-common.c | 6 +++++
4 files changed, 59 insertions(+), 2 deletions(-)
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@linaro.org>
Regards,
-grygorii
--
1.7.9.5
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 0/2] OMAP4460: cpuidle: Workaround for ROM bug because of CA9 r2pX GIC control register change
2013-10-17 9:23 ` Grygorii Strashko
@ 2013-10-17 9:28 ` Grygorii Strashko
-1 siblings, 0 replies; 5+ messages in thread
From: Grygorii Strashko @ 2013-10-17 9:28 UTC (permalink / raw)
To: linux-omap@vger.kernel.org, Tony Lindgren
Cc: Taras Kondratiuk, Kevin Hilman, Santosh Shilimkar, open list,
linux-arm
Sorry, forgot to mention that patches are based on 4a10c2a Linux 3.12-rc2
On 10/17/2013 12:23 PM, Grygorii Strashko wrote:
> The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
> "ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC control register change."
> need to be applied not only when system is booting, but when
> MPU hits OSWR state through CPUIdle too.
>
> Now the same issue is reproduced on boards PandaES and Tablet/Blaze with
> SOM OMAP4460 ES1.0 when CONFIG_CPU_IDLE is enabled.
> - GIC distributor is disabled
> - scheduling is not performed any more
>
> Grygorii Strashko (2):
> Revert "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context_state()"
> ARM: OMAP4460: cpuidle: WA for ROM bug because of CA9 r2pX gic control register change
>
> arch/arm/mach-omap2/common.h | 6 +++++
> arch/arm/mach-omap2/cpuidle44xx.c | 35 +++++++++++++++++++++++++++--
> arch/arm/mach-omap2/omap-mpuss-lowpower.c | 14 ++++++++++++
> arch/arm/mach-omap2/omap4-common.c | 6 +++++
> 4 files changed, 59 insertions(+), 2 deletions(-)
>
> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
> Cc: Kevin Hilman <khilman@linaro.org>
>
> Regards,
> -grygorii
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH 0/2] OMAP4460: cpuidle: Workaround for ROM bug because of CA9 r2pX GIC control register change
@ 2013-10-17 9:28 ` Grygorii Strashko
0 siblings, 0 replies; 5+ messages in thread
From: Grygorii Strashko @ 2013-10-17 9:28 UTC (permalink / raw)
To: linux-arm-kernel
Sorry, forgot to mention that patches are based on 4a10c2a Linux 3.12-rc2
On 10/17/2013 12:23 PM, Grygorii Strashko wrote:
> The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
> "ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC control register change."
> need to be applied not only when system is booting, but when
> MPU hits OSWR state through CPUIdle too.
>
> Now the same issue is reproduced on boards PandaES and Tablet/Blaze with
> SOM OMAP4460 ES1.0 when CONFIG_CPU_IDLE is enabled.
> - GIC distributor is disabled
> - scheduling is not performed any more
>
> Grygorii Strashko (2):
> Revert "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context_state()"
> ARM: OMAP4460: cpuidle: WA for ROM bug because of CA9 r2pX gic control register change
>
> arch/arm/mach-omap2/common.h | 6 +++++
> arch/arm/mach-omap2/cpuidle44xx.c | 35 +++++++++++++++++++++++++++--
> arch/arm/mach-omap2/omap-mpuss-lowpower.c | 14 ++++++++++++
> arch/arm/mach-omap2/omap4-common.c | 6 +++++
> 4 files changed, 59 insertions(+), 2 deletions(-)
>
> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
> Cc: Kevin Hilman <khilman@linaro.org>
>
> Regards,
> -grygorii
>
^ permalink raw reply [flat|nested] 5+ messages in thread