[U-Boot] [PATCH] arm: pxa: config option for PXA270 turbo mode

Sergey Yanovich
2013-05-21T19:49:41Z

PXA270 CPU has turbo mode. The mode is 2.5 times faster than the
default run mode. Activating the mode early significantly speeds
up boot process.

Signed-off-by: Sergey Yanovich <ynvich@gmail.com>

---
Changes for v3:
- make the change unconditional

Changes for v2:
- activate turbo mode and fast bus by default
---
arch/arm/cpu/pxa/pxa2xx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/cpu/pxa/pxa2xx.c b/arch/arm/cpu/pxa/pxa2xx.c
index 09e8177..67a2ce1 100644
--- a/arch/arm/cpu/pxa/pxa2xx.c
+++ b/arch/arm/cpu/pxa/pxa2xx.c
@@ -244,7 +244,7 @@ void pxa_clock_setup(void)
{
writel(CONFIG_SYS_CKEN, CKEN);
writel(CONFIG_SYS_CCCR, CCCR);
- asm volatile("mcr p14, 0, %0, c6, c0, 0" : : "r"(2));
+ asm volatile("mcr p14, 0, %0, c6, c0, 0" : : "r"(0x0b));

/* enable the 32Khz oscillator for RTC and PowerManager */
writel(OSCC_OON, OSCC);
--
1.7.10.4