On Wed, Mar 20, 2019 at 06:49:19AM +0000, Tudor.Ambarus@microchip.com wrote:
Mika,
Would you please add your Acked-by again? It's dropped in v4.
Sure.
Looks good for me, below is my R-b.
Thanks!
On 03/19/2019 07:18 PM, Sverdlin, Alexander (Nokia - DE/Ulm) wrote:
External E-Mail
From: Alexander Sverdlin alexander.sverdlin@nokia.com
It was observed that reads crossing 4K address boundary are failing.
This limitation is mentioned in Intel documents:
Intel(R) 9 Series Chipset Family Platform Controller Hub (PCH) Datasheet:
"5.26.3 Flash Access Program Register Access:
- Program Register Accesses are not allowed to cross a 4 KB boundary..."
Enhanced Serial Peripheral Interface (eSPI) Interface Base Specification (for Client and Server Platforms):
"5.1.4 Address For other memory transactions, the address may start or end at any byte boundary. However, the address and payload length combination must not cross the naturally aligned address boundary of the corresponding Maximum Payload Size. It must not cross a 4 KB address boundary."
Avoid this by splitting an operation crossing the boundary into two operations.
Cc: stable@vger.kernel.org Reported-by: Romain Porte romain.porte@nokia.com Tested-by: Pascal Fabreges pascal.fabreges@nokia.com Signed-off-by: Alexander Sverdlin alexander.sverdlin@nokia.com
Reviewed-by: Tudor Ambarus tudor.ambarus@microchip.com
Acked-by: Mika Westerberg mika.westerberg@linux.intel.com