[PATCH] ARM: add revision info for PL310 errata 588369 and 727915

[PATCH] ARM: add revision info for PL310 errata 588369 and 727915

[Shawn Guo]

Add revision info for PL310_ERRATA_588369 and PL310_ERRATA_727915 to
help people understand if they need to enable the errata for their
hardware.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
 arch/arm/mm/Kconfig | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index eda0dd0ab97b..9fb8a02b7e35 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -907,8 +907,8 @@ config PL310_ERRATA_588369
 	   They are architecturally defined to behave as the execution of a
 	   clean operation followed immediately by an invalidate operation,
 	   both performing to the same memory location. This functionality
-	   is not correctly implemented in PL310 as clean lines are not
-	   invalidated as a result of these operations.
+	   is not correctly implemented in PL310 prior to r2p0 (fixed in r2p0)
+	   as clean lines are not invalidated as a result of these operations.
 
 config PL310_ERRATA_727915
 	bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
@@ -919,7 +919,8 @@ config PL310_ERRATA_727915
 	  PL310 can handle normal accesses while it is in progress. Under very
 	  rare circumstances, due to this erratum, write data can be lost when
 	  PL310 treats a cacheable write transaction during a Clean &
-	  Invalidate by Way operation.
+	  Invalidate by Way operation.  Revisions prior to r3p1 are affected by
+	  this errata (fixed in r3p1).
 
 config PL310_ERRATA_753970
 	bool "PL310 errata: cache sync operation may be faulty"
-- 
1.8.3.2

[PATCH] ARM: add revision info for PL310 errata 588369 and 727915

[Shawn Guo]

On Wed, Jul 02, 2014 at 03:23:36PM +0800, Shawn Guo wrote:
> Add revision info for PL310_ERRATA_588369 and PL310_ERRATA_727915 to
> help people understand if they need to enable the errata for their
> hardware.
> 
> Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

Any comments on this patch?  Otherwise, I'm going to throw it into
the patch system.

Shawn

> ---
>  arch/arm/mm/Kconfig | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
> index eda0dd0ab97b..9fb8a02b7e35 100644
> --- a/arch/arm/mm/Kconfig
> +++ b/arch/arm/mm/Kconfig
> @@ -907,8 +907,8 @@ config PL310_ERRATA_588369
>  	   They are architecturally defined to behave as the execution of a
>  	   clean operation followed immediately by an invalidate operation,
>  	   both performing to the same memory location. This functionality
> -	   is not correctly implemented in PL310 as clean lines are not
> -	   invalidated as a result of these operations.
> +	   is not correctly implemented in PL310 prior to r2p0 (fixed in r2p0)
> +	   as clean lines are not invalidated as a result of these operations.
>  
>  config PL310_ERRATA_727915
>  	bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
> @@ -919,7 +919,8 @@ config PL310_ERRATA_727915
>  	  PL310 can handle normal accesses while it is in progress. Under very
>  	  rare circumstances, due to this erratum, write data can be lost when
>  	  PL310 treats a cacheable write transaction during a Clean &
> -	  Invalidate by Way operation.
> +	  Invalidate by Way operation.  Revisions prior to r3p1 are affected by
> +	  this errata (fixed in r3p1).
>  
>  config PL310_ERRATA_753970
>  	bool "PL310 errata: cache sync operation may be faulty"
> -- 
> 1.8.3.2
> 

[PATCH] ARM: add revision info for PL310 errata 588369 and 727915

[Russell King - ARM Linux]

On Mon, Jul 07, 2014 at 10:07:09PM +0800, Shawn Guo wrote:
> On Wed, Jul 02, 2014 at 03:23:36PM +0800, Shawn Guo wrote:
> > Add revision info for PL310_ERRATA_588369 and PL310_ERRATA_727915 to
> > help people understand if they need to enable the errata for their
> > hardware.
> > 
> > Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
> 
> Any comments on this patch?  Otherwise, I'm going to throw it into
> the patch system.

I don't see anything wrong with this change.

-- 
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improving, and getting towards what was expected from it.

[PATCH] ARM: add revision info for PL310 errata 588369 and 727915

[Shawn Guo]

On Mon, Jul 07, 2014 at 04:44:26PM +0100, Russell King - ARM Linux wrote:
> On Mon, Jul 07, 2014 at 10:07:09PM +0800, Shawn Guo wrote:
> > On Wed, Jul 02, 2014 at 03:23:36PM +0800, Shawn Guo wrote:
> > > Add revision info for PL310_ERRATA_588369 and PL310_ERRATA_727915 to
> > > help people understand if they need to enable the errata for their
> > > hardware.
> > > 
> > > Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
> > 
> > Any comments on this patch?  Otherwise, I'm going to throw it into
> > the patch system.
> 
> I don't see anything wrong with this change.

Okay, just put it into patch tracker as 8090/1.

Shawn