From: Marek Vasut <marex@denx.de>
Date: Fri, 11 Jan 2013 03:19:17 +0000 (+0000)
Subject: mxs: Add function to ungate the power block on MX23
X-Git-Tag: v2013.04-rc1~48^2~34^2~28
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=7788bf067db6710dd5df76d420c7033087642173;p=karo-tx-uboot.git

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 <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
---

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
index be44c22976..e9d6302b7a 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();