From 6a376046ef3b2417cf9fbfbfad300fa6f026c816 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <festevam@gmail.com>
Date: Sun, 29 Apr 2012 08:11:13 +0000
Subject: imx-common: Factor out get_ahb_clk()

get_ahb_clk() is a common function between mx5 and mx6.

Place it into imx-common directory.

Cc: Dirk Behme <dirk.behme@googlemail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 arch/arm/cpu/armv7/imx-common/cpu.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'arch/arm/cpu/armv7/imx-common')

diff --git a/arch/arm/cpu/armv7/imx-common/cpu.c b/arch/arm/cpu/armv7/imx-common/cpu.c
index 3d58d8ae91..b96fa5bdb9 100644
--- a/arch/arm/cpu/armv7/imx-common/cpu.c
+++ b/arch/arm/cpu/armv7/imx-common/cpu.c
@@ -29,6 +29,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/crm_regs.h>
 
 #ifdef CONFIG_FSL_ESDHC
 #include <fsl_esdhc.h>
@@ -127,3 +128,15 @@ void reset_cpu(ulong addr)
 {
 	__raw_writew(4, WDOG1_BASE_ADDR);
 }
+
+u32 get_ahb_clk(void)
+{
+	struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	u32 reg, ahb_podf;
+
+	reg = __raw_readl(&imx_ccm->cbcdr);
+	reg &= MXC_CCM_CBCDR_AHB_PODF_MASK;
+	ahb_podf = reg >> MXC_CCM_CBCDR_AHB_PODF_OFFSET;
+
+	return get_periph_clk() / (ahb_podf + 1);
+}
-- 
cgit