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mxs: power: Change sequence of enabling DCDC switches

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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>
This commit is contained in:
Lukasz Majewski 2021-10-13 15:40:12 +02:00 committed by Stefano Babic
parent cd0ecb3d80
commit 91f27f3ba8
1 changed files with 2 additions and 2 deletions
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4
arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
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@ -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,