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mxs: Add function to ungate the power block on MX23

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The power block on MX23 must first be ungated before it can be operated.
Add function to MXS power init that ungates it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2013-01-11 03:19:17 +00:00 committed by Stefano Babic
parent 1a3c5ffe4f
commit 7788bf067d
1 changed files with 12 additions and 0 deletions
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12
arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
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@ -881,11 +881,23 @@ static void mxs_setup_batt_detect(void)
early_delay(10);
}
static void mxs_ungate_power(void)
{
#ifdef CONFIG_MX23
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
writel(POWER_CTRL_CLKGATE, &power_regs->hw_power_ctrl_clr);
#endif
}
void mxs_power_init(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
mxs_ungate_power();
mxs_power_clock2xtal();
mxs_power_clear_auto_restart();
mxs_power_set_linreg();