diff options
| author | Jason Liu <r64343@freescale.com> | 2012-02-09 14:09:58 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-02-09 21:12:35 +0800 |
| commit | aadace1f91936e01604ba8310de63eac8f3d7eaf (patch) | |
| tree | 6862f4f969749aab6c6e19338ef1395f29425a62 | |
| parent | 62ea60a0712052c43618d1cac968ccf51e3a4e5e (diff) | |
ENGR00174152 i.mx6/clock: set ddr clock parent to pll2_mfd_400M
on i.mx6dl, DDR clock is sourcing from pll2_mfd_400M, so, we need
set DDR/periph_clk parent to pll2_mfd_400M during clock init, which
will setup the clock usecount of pll2_mfd_400M correctly, otherwise,
when all the child device with clock source from pll2_mfd_400M turn
off, the pll2_mfd_400M will turns off automaticly, which will cause
system hang due to DDR clock is off when code is runing on it.
Signed-off-by: Jason Liu <r64343@freescale.com>
| -rw-r--r-- | arch/arm/mach-mx6/clock.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mach-mx6/clock.c b/arch/arm/mach-mx6/clock.c index c508b41d4730..5e703a8c9153 100644 --- a/arch/arm/mach-mx6/clock.c +++ b/arch/arm/mach-mx6/clock.c @@ -5083,7 +5083,8 @@ static void clk_tree_init(void) reg = __raw_readl(MMDC_MDMISC_OFFSET); if ((reg & MMDC_MDMISC_DDR_TYPE_MASK) == - (0x1 << MMDC_MDMISC_DDR_TYPE_OFFSET)) { + (0x1 << MMDC_MDMISC_DDR_TYPE_OFFSET) || + cpu_is_mx6dl()) { clk_set_parent(&periph_clk, &pll2_pfd_400M); printk(KERN_INFO "Set periph_clk's parent to pll2_pfd_400M!\n"); } |