From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergey Yanovich Date: Tue, 21 May 2013 01:44:45 +0400 Subject: [U-Boot] [PATCH] arm: pxa: config option for PXA270 turbo mode Message-ID: <1369086285-25838-1-git-send-email-ynvich@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 --- arch/arm/cpu/pxa/pxa2xx.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/arm/cpu/pxa/pxa2xx.c b/arch/arm/cpu/pxa/pxa2xx.c index 09e8177..6c918ac 100644 --- a/arch/arm/cpu/pxa/pxa2xx.c +++ b/arch/arm/cpu/pxa/pxa2xx.c @@ -32,6 +32,10 @@ #include #include +#ifndef CONFIG_SYS_CLKCFG +#define CONFIG_SYS_CLKCFG 0x00000002 +#endif + /* Flush I/D-cache */ static void cache_flush(void) { @@ -244,7 +248,8 @@ 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"(CONFIG_SYS_CLKCFG)); /* enable the 32Khz oscillator for RTC and PowerManager */ writel(OSCC_OON, OSCC); -- 1.7.10.4