[U-Boot] [PATCH] mx31: Define default SoC input clock frequencies
Benoît Thébaudeau
benoit.thebaudeau at advansee.com
Tue Aug 21 23:06:03 CEST 2012
Define default SoC input clock frequencies for i.MX31 in order to get rid of
duplicated definitions.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau at advansee.com>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
Cc: Wolfgang Denk <wd at denx.de>
Cc: Helmut Raiger <helmut.raiger at hale.at>
---
.../arch/arm/cpu/arm1136/mx31/generic.c | 4 ++--
.../arch/arm/cpu/arm1136/mx31/timer.c | 16 ++++++++--------
.../arch/arm/include/asm/arch-mx31/clock.h | 14 ++++++++++++++
.../include/configs/imx31_litekit.h | 1 -
.../include/configs/imx31_phycore.h | 1 -
.../include/configs/mx31ads.h | 2 --
.../include/configs/mx31pdk.h | 2 --
.../include/configs/qong.h | 2 --
.../include/configs/tt01.h | 2 --
9 files changed, 24 insertions(+), 20 deletions(-)
diff --git u-boot-imx-88e73dd.orig/arch/arm/cpu/arm1136/mx31/generic.c u-boot-imx-88e73dd/arch/arm/cpu/arm1136/mx31/generic.c
index 8873fb7..7b53437 100644
--- u-boot-imx-88e73dd.orig/arch/arm/cpu/arm1136/mx31/generic.c
+++ u-boot-imx-88e73dd/arch/arm/cpu/arm1136/mx31/generic.c
@@ -47,9 +47,9 @@ static u32 mx31_get_mpl_dpdgck_clk(void)
u32 infreq;
if ((readl(CCM_CCMR) & CCMR_PRCS_MASK) == CCMR_FPM)
- infreq = CONFIG_MX31_CLK32 * 1024;
+ infreq = MXC_CLK32 * 1024;
else
- infreq = CONFIG_MX31_HCLK_FREQ;
+ infreq = MXC_HCLK;
return mx31_decode_pll(readl(CCM_MPCTL), infreq);
}
diff --git u-boot-imx-88e73dd.orig/arch/arm/cpu/arm1136/mx31/timer.c u-boot-imx-88e73dd/arch/arm/cpu/arm1136/mx31/timer.c
index 72081a8..36266da 100644
--- u-boot-imx-88e73dd.orig/arch/arm/cpu/arm1136/mx31/timer.c
+++ u-boot-imx-88e73dd/arch/arm/cpu/arm1136/mx31/timer.c
@@ -23,6 +23,7 @@
#include <common.h>
#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
#include <div64.h>
#include <watchdog.h>
#include <asm/io.h>
@@ -53,28 +54,27 @@ DECLARE_GLOBAL_DATA_PTR;
static inline unsigned long long tick_to_time(unsigned long long tick)
{
tick *= CONFIG_SYS_HZ;
- do_div(tick, CONFIG_MX31_CLK32);
+ do_div(tick, MXC_CLK32);
return tick;
}
static inline unsigned long long time_to_tick(unsigned long long time)
{
- time *= CONFIG_MX31_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_MX31_CLK32 + 999999;
+ us = us * MXC_CLK32 + 999999;
do_div(us, 1000000);
return us;
}
#else
/* ~2% error */
-#define TICK_PER_TIME ((CONFIG_MX31_CLK32 + CONFIG_SYS_HZ / 2) \
- / CONFIG_SYS_HZ)
-#define US_PER_TICK (1000000 / CONFIG_MX31_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)
{
@@ -128,7 +128,7 @@ ulong get_timer_masked(void)
{
/*
* get_ticks() returns a long long (64 bit), it wraps in
- * 2^64 / CONFIG_MX31_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.
*/
@@ -159,7 +159,7 @@ void __udelay(unsigned long usec)
*/
ulong get_tbclk(void)
{
- return CONFIG_MX31_CLK32;
+ return MXC_CLK32;
}
void reset_cpu(ulong addr)
diff --git u-boot-imx-88e73dd.orig/arch/arm/include/asm/arch-mx31/clock.h u-boot-imx-88e73dd/arch/arm/include/asm/arch-mx31/clock.h
index 852c19c..9468b45 100644
--- u-boot-imx-88e73dd.orig/arch/arm/include/asm/arch-mx31/clock.h
+++ u-boot-imx-88e73dd/arch/arm/include/asm/arch-mx31/clock.h
@@ -24,6 +24,20 @@
#ifndef __ASM_ARCH_CLOCK_H
#define __ASM_ARCH_CLOCK_H
+#include <common.h>
+
+#ifdef CONFIG_MX31_HCLK_FREQ
+#define MXC_HCLK CONFIG_MX31_HCLK_FREQ
+#else
+#define MXC_HCLK 26000000
+#endif
+
+#ifdef CONFIG_MX31_CLK32
+#define MXC_CLK32 CONFIG_MX31_CLK32
+#else
+#define MXC_CLK32 32768
+#endif
+
enum mxc_clock {
MXC_ARM_CLK,
MXC_IPG_CLK,
diff --git u-boot-imx-88e73dd.orig/include/configs/imx31_litekit.h u-boot-imx-88e73dd/include/configs/imx31_litekit.h
index a340e97..4af6c4b 100644
--- u-boot-imx-88e73dd.orig/include/configs/imx31_litekit.h
+++ u-boot-imx-88e73dd/include/configs/imx31_litekit.h
@@ -33,7 +33,6 @@
/* High Level Configuration Options */
#define CONFIG_ARM1136 1 /* This is an arm1136 CPU core */
#define CONFIG_MX31 1 /* in a mx31 */
-#define CONFIG_MX31_HCLK_FREQ 26000000
#define CONFIG_MX31_CLK32 32000
#define CONFIG_DISPLAY_CPUINFO
diff --git u-boot-imx-88e73dd.orig/include/configs/imx31_phycore.h u-boot-imx-88e73dd/include/configs/imx31_phycore.h
index a412cf6..bf763f6 100644
--- u-boot-imx-88e73dd.orig/include/configs/imx31_phycore.h
+++ u-boot-imx-88e73dd/include/configs/imx31_phycore.h
@@ -33,7 +33,6 @@
/* High Level Configuration Options */
#define CONFIG_ARM1136 /* This is an arm1136 CPU core */
#define CONFIG_MX31 /* in a mx31 */
-#define CONFIG_MX31_HCLK_FREQ 26000000
#define CONFIG_MX31_CLK32 32000
#define CONFIG_DISPLAY_CPUINFO
diff --git u-boot-imx-88e73dd.orig/include/configs/mx31ads.h u-boot-imx-88e73dd/include/configs/mx31ads.h
index cc720e8..205319d 100644
--- u-boot-imx-88e73dd.orig/include/configs/mx31ads.h
+++ u-boot-imx-88e73dd/include/configs/mx31ads.h
@@ -27,8 +27,6 @@
/* High Level Configuration Options */
#define CONFIG_ARM1136 1 /* This is an arm1136 CPU core */
#define CONFIG_MX31 1 /* in a mx31 */
-#define CONFIG_MX31_HCLK_FREQ 26000000 /* RedBoot says 26MHz */
-#define CONFIG_MX31_CLK32 32768
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
diff --git u-boot-imx-88e73dd.orig/include/configs/mx31pdk.h u-boot-imx-88e73dd/include/configs/mx31pdk.h
index 7634de7..7f5d209 100644
--- u-boot-imx-88e73dd.orig/include/configs/mx31pdk.h
+++ u-boot-imx-88e73dd/include/configs/mx31pdk.h
@@ -35,8 +35,6 @@
/* High Level Configuration Options */
#define CONFIG_ARM1136 /* This is an arm1136 CPU core */
#define CONFIG_MX31 /* in a mx31 */
-#define CONFIG_MX31_HCLK_FREQ 26000000
-#define CONFIG_MX31_CLK32 32768
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
diff --git u-boot-imx-88e73dd.orig/include/configs/qong.h u-boot-imx-88e73dd/include/configs/qong.h
index e824e17..2ca6b5f 100644
--- u-boot-imx-88e73dd.orig/include/configs/qong.h
+++ u-boot-imx-88e73dd/include/configs/qong.h
@@ -28,8 +28,6 @@
#define CONFIG_ARM1136 /* This is an arm1136 CPU core */
#define CONFIG_MX31 /* in a mx31 */
#define CONFIG_QONG
-#define CONFIG_MX31_HCLK_FREQ 26000000 /* 26MHz */
-#define CONFIG_MX31_CLK32 32768
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
diff --git u-boot-imx-88e73dd.orig/include/configs/tt01.h u-boot-imx-88e73dd/include/configs/tt01.h
index 2b2e7fd..900366f 100644
--- u-boot-imx-88e73dd.orig/include/configs/tt01.h
+++ u-boot-imx-88e73dd/include/configs/tt01.h
@@ -31,8 +31,6 @@
/* High Level Configuration Options */
#define CONFIG_ARM1136
#define CONFIG_MX31
-#define CONFIG_MX31_HCLK_FREQ 26000000
-#define CONFIG_MX31_CLK32 32768
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
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