From 7788bf067db6710dd5df76d420c7033087642173 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 11 Jan 2013 03:19:17 +0000 Subject: mxs: Add function to ungate the power block on MX23 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 Cc: Fabio Estevam Cc: Otavio Salvador Cc: Stefano Babic --- arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/arm/cpu') diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c index be44c22..e9d6302 100644 --- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c +++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c @@ -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(); -- cgit v1.1