On Thu, 14 Jul 2011 16:00:23 +0200 Albert ARIBAUD albert.u.boot@aribaud.net wrote:
Hi Lukasz,
Le 11/07/2011 09:41, Lukasz Majewski a écrit :
Signed-off-by: Lukasz Majewskil.majewski@samsung.com Cc: Minkyu Kangmk7.kang@samsung.com Cc: Aneesh Vaneesh@ti.com
Can you please submit a V2 patch in which the commit message provides a rationale for turning the data cache off? People who want to turn it on later will benefit from the info.
Amicalement,
Hi Albert,
Rationale for turning OFF D cache:
1. Before change introduced in commit SHA1:c2dd0d45540397704de9b13287417d21049d34c6 the D-cache for GONI/Universal_c210 targets was disabled. This change was supposed to preserve this state.
2. I've done some investigation about enabling D-cache support. It turned out, that some drivers (which are already posted or are in the queue for posting to u-boot list) have had problems with D-cache coherency.
This commit shall be treated as a temporal solution. After solving cache management (and coherency) problems the D-cache would be definitely enabled.