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imx: mx6ul: skip setting ahb rate 

To i.MX6UL, default ARM rate and AHB rate is 396M and 198M,
no need to set them.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
utp
Peng Fan 2016-03-09 16:44:36 +08:00 committed by Stefano Babic
parent b777789ebd
commit e4dc3fc068
1 changed files with 12 additions and 7 deletions
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19
arch/arm/cpu/armv7/mx6/soc.c
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@ -328,13 +328,18 @@ int arch_cpu_init(void)
*/
init_bandgap();
/*
* When low freq boot is enabled, ROM will not set AHB
* freq, so we need to ensure AHB freq is 132MHz in such
* scenario.
*/
if (mxc_get_clock(MXC_ARM_CLK) == 396000000)
set_ahb_rate(132000000);
if (!IS_ENABLED(CONFIG_MX6UL)) {
/*
* When low freq boot is enabled, ROM will not set AHB
* freq, so we need to ensure AHB freq is 132MHz in such
* scenario.
*
* To i.MX6UL, when power up, default ARM core and
* AHB rate is 396M and 132M.
*/
if (mxc_get_clock(MXC_ARM_CLK) == 396000000)
set_ahb_rate(132000000);
}
/* Set perclk to source from OSC 24MHz */
#if defined(CONFIG_MX6SL)