From 1b2080f3388b70c4c37b69830f73a61c50cdd505 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Beno=C3=AEt=20Th=C3=A9baudeau?=
<benoit.thebaudeau@advansee.com>
Date: Tue, 21 Aug 2012 11:05:12 +0000
Subject: [PATCH] mx25: Define default SoC input clock frequencies
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Define default SoC input clock frequencies for i.MX25 in order to get rid of
duplicated definitions.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Matthias Weisser <weisserm@arcor.de>
---
arch/arm/cpu/arm926ejs/mx25/generic.c | 2 +-
arch/arm/cpu/arm926ejs/mx25/timer.c | 16 ++++++++--------
arch/arm/include/asm/arch-mx25/clock.h | 14 ++++++++++++++
include/configs/mx25pdk.h | 1 -
include/configs/zmx25.h | 1 -
5 files changed, 23 insertions(+), 11 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/mx25/generic.c b/arch/arm/cpu/arm926ejs/mx25/generic.c
index a412a8fe20..90e584ac58 100644
--- a/arch/arm/cpu/arm926ejs/mx25/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx25/generic.c
@@ -64,7 +64,7 @@ static unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref)
static ulong imx_get_mpllclk(void)
{
struct ccm_regs *ccm = (struct ccm_regs *)IMX_CCM_BASE;
- ulong fref = 24000000;
+ ulong fref = MXC_HCLK;
return imx_decode_pll(readl(&ccm->mpctl), fref);
}
diff --git a/arch/arm/cpu/arm926ejs/mx25/timer.c b/arch/arm/cpu/arm926ejs/mx25/timer.c
index 1cfd02b230..4dc4041c08 100644
--- a/arch/arm/cpu/arm926ejs/mx25/timer.c
+++ b/arch/arm/cpu/arm926ejs/mx25/timer.c
@@ -40,6 +40,7 @@
#include <div64.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -55,28 +56,27 @@ DECLARE_GLOBAL_DATA_PTR;
static inline unsigned long long tick_to_time(unsigned long long tick)
{
tick *= CONFIG_SYS_HZ;
- do_div(tick, CONFIG_MX25_CLK32);
+ do_div(tick, MXC_CLK32);
return tick;
}
static inline unsigned long long time_to_tick(unsigned long long time)
{
- time *= CONFIG_MX25_CLK32;
+ time *= MXC_CLK32;
do_div(time, CONFIG_SYS_HZ);
return time;
}
static inline unsigned long long us_to_tick(unsigned long long us)
{
- us = us * CONFIG_MX25_CLK32 + 999999;
+ us = us * MXC_CLK32 + 999999;
do_div(us, 1000000);
return us;
}
#else
/* ~2% error */
-#define TICK_PER_TIME ((CONFIG_MX25_CLK32 + CONFIG_SYS_HZ / 2) / \
- CONFIG_SYS_HZ)
-#define US_PER_TICK (1000000 / CONFIG_MX25_CLK32)
+#define TICK_PER_TIME ((MXC_CLK32 + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ)
+#define US_PER_TICK (1000000 / MXC_CLK32)
static inline unsigned long long tick_to_time(unsigned long long tick)
{
@@ -144,7 +144,7 @@ ulong get_timer_masked(void)
{
/*
* get_ticks() returns a long long (64 bit), it wraps in
- * 2^64 / CONFIG_MX25_CLK32 = 2^64 / 2^15 = 2^49 ~ 5 * 10^14 (s) ~
+ * 2^64 / MXC_CLK32 = 2^64 / 2^15 = 2^49 ~ 5 * 10^14 (s) ~
* 5 * 10^9 days... and get_ticks() * CONFIG_SYS_HZ wraps in
* 5 * 10^6 days - long enough.
*/
@@ -177,6 +177,6 @@ ulong get_tbclk(void)
{
ulong tbclk;
- tbclk = CONFIG_MX25_CLK32;
+ tbclk = MXC_CLK32;
return tbclk;
}
diff --git a/arch/arm/include/asm/arch-mx25/clock.h b/arch/arm/include/asm/arch-mx25/clock.h
index 0f47eaf053..a313b80611 100644
--- a/arch/arm/include/asm/arch-mx25/clock.h
+++ b/arch/arm/include/asm/arch-mx25/clock.h
@@ -26,6 +26,20 @@
#ifndef __ASM_ARCH_CLOCK_H
#define __ASM_ARCH_CLOCK_H
+#include <common.h>
+
+#ifdef CONFIG_MX25_HCLK_FREQ
+#define MXC_HCLK CONFIG_MX25_HCLK_FREQ
+#else
+#define MXC_HCLK 24000000
+#endif
+
+#ifdef CONFIG_MX25_CLK32
+#define MXC_CLK32 CONFIG_MX25_CLK32
+#else
+#define MXC_CLK32 32768
+#endif
+
enum mxc_clock {
MXC_CSI_CLK,
MXC_EPIT_CLK,
diff --git a/include/configs/mx25pdk.h b/include/configs/mx25pdk.h
index 359a308305..96c143efb9 100644
--- a/include/configs/mx25pdk.h
+++ b/include/configs/mx25pdk.h
@@ -17,7 +17,6 @@
/* High Level Configuration Options */
-#define CONFIG_MX25_CLK32 32768 /* OSC32K frequency */
#define CONFIG_SYS_HZ 1000
#define CONFIG_SYS_TEXT_BASE 0x81200000
diff --git a/include/configs/zmx25.h b/include/configs/zmx25.h
index 072945ad4a..447683a490 100644
--- a/include/configs/zmx25.h
+++ b/include/configs/zmx25.h
@@ -28,7 +28,6 @@
#define CONFIG_ARM926EJS /* arm926ejs CPU core */
#define CONFIG_MX25
-#define CONFIG_MX25_CLK32 32768 /* OSC32K frequency */
#define CONFIG_SYS_HZ 1000
#define CONFIG_SYS_TEXT_BASE 0xA0000000
--
2.39.5