On Tue, Oct 11, 2011 at 5:35 PM, Simon Glass sjg@chromium.org wrote:
This enables the data cache on Tegra2 boards.
As discussed on the list, this is better off in the Tegra2 cpu code than in a particular vendor directory. We should be safe turning on the cache for all Tegra2 boards.
I don't think it's safe to turn on caches yet for Tegra. I have some MMC driver fixes I'll send up shortly that deal with unaligned DMA requests that are required before turning on caches. Without these some MMC transactions just hang.
Thanks, Anton
Signed-off-by: Simon Glass sjg@chromium.org
Changes in v2:
- Enable caches for all Tegra2 boards instead of just Nvidia ones
arch/arm/cpu/armv7/tegra2/board.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c index 9061d18..a996b88 100644 --- a/arch/arm/cpu/armv7/tegra2/board.c +++ b/arch/arm/cpu/armv7/tegra2/board.c @@ -86,3 +86,11 @@ int checkboard(void) return 0; } #endif /* CONFIG_DISPLAY_BOARDINFO */
+#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{
- /* Enable D-cache. I-cache is already enabled in start.S */
- dcache_enable();
+}
+#endif
1.7.3.1
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