mxs: power: Change sequence of enabling DCDC switches

The imx28 uses following voltage supplies hierarchy:

VDD_5V (VDD_BAT) -> VDDIO -> VDDA -> VDDMEM
			     \-----> VDDD

One shall first enable DCDC on the parent source (VDDIO) and then
follow with its children.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
index 35ea71a..c33170f 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
@@ -627,11 +627,11 @@ static void mxs_power_enable_4p2(void)
 
        mxs_power_init_dcdc_4p2_source();
 
-       writel(vdddctrl, &power_regs->hw_power_vdddctrl);
+       writel(vddioctrl, &power_regs->hw_power_vddioctrl);
        early_delay(20);
        writel(vddactrl, &power_regs->hw_power_vddactrl);
        early_delay(20);
-       writel(vddioctrl, &power_regs->hw_power_vddioctrl);
+       writel(vdddctrl, &power_regs->hw_power_vdddctrl);
 
        /*
         * Check if FET is enabled on either powerout and if so,