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

Sergey Yanovich ynvich at gmail.com
Tue May 21 21:49:41 CEST 2013


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 at 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



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