[Armadeus-commitlog] armadeus branch, master, updated. armadeus-5.0-3-gf6a3a49
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[Armadeus-commitlog] armadeus branch, master, updated. armadeus-5.0-3-gf6a3a49
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From: jorasse <jo...@us...> - 2012-08-16 11:23:38
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This is an automated email from the git hooks/post-receive script. It was
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The branch, master has been updated
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from e850668bfc48dcb76648b593b72f7fa4bced891f (commit)
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- Log -----------------------------------------------------------------
commit f6a3a49a8f3549413e914e16d4e2cfe7cd1639e0
Author: Eric Jarrige <eri...@ar...>
Date: Thu Aug 16 13:26:56 2012 +0200
[LINUX] apf28: Support RAM frequency scaling options: DDR2, mDDR and disable RAM frequency scaling
-----------------------------------------------------------------------
Summary of changes:
...eus-support_ram_frequency_scaling_options.patch | 100 ++++++++++++++++++++
1 files changed, 100 insertions(+), 0 deletions(-)
create mode 100644 patches/linux/2.6.35/460-armadeus-support_ram_frequency_scaling_options.patch
diff --git a/patches/linux/2.6.35/460-armadeus-support_ram_frequency_scaling_options.patch b/patches/linux/2.6.35/460-armadeus-support_ram_frequency_scaling_options.patch
new file mode 100644
index 0000000..56f119e
--- /dev/null
+++ b/patches/linux/2.6.35/460-armadeus-support_ram_frequency_scaling_options.patch
@@ -0,0 +1,100 @@
+Support RAM frequency scaling options: DDR2, mDDR and disable RAM frequency
+scaling.
+
+This patch does not fix USB and ethernet issues reported with dynamic frequency
+scaling governors: conservative and ondemand. in such a case disabling RAM
+frequency scaling is the best workaroung with a very limit impact on the cpu
+power consumption with a lose of few mA (please fixme).
+
+Signed-off-by: Eric Jarrige <eri...@ar...>
+---
+Index: linux-2.6.35.3/arch/arm/mach-mx28/clock.c
+===================================================================
+--- linux-2.6.35.3/arch/arm/mach-mx28/clock.c
++++ linux-2.6.35.3/arch/arm/mach-mx28/clock.c
+@@ -885,6 +885,7 @@ static unsigned long emi_round_rate(stru
+
+ static int emi_set_rate(struct clk *clk, unsigned long rate)
+ {
++#ifdef CONFIG_MXS_RAM_FREQ_SCALING
+ struct mxs_emi_scaling_data emi;
+ volatile unsigned int StateX, StateH;
+ volatile unsigned int APBHCTRL_Backup, APBXCTRL_Backup;
+@@ -982,6 +983,7 @@ static int emi_set_rate(struct clk *clk,
+ printk(KERN_ERR "couldn't set up EMI divisor\n");
+ return -ETIMEDOUT;
+ }
++#endif /* CONFIG_MXS_RAM_FREQ_SCALING */
+
+ return 0;
+ }
+Index: linux-2.6.35.3/arch/arm/mach-mx28/emi_settings.h
+===================================================================
+--- linux-2.6.35.3/arch/arm/mach-mx28/emi_settings.h
++++ linux-2.6.35.3/arch/arm/mach-mx28/emi_settings.h
+@@ -27,6 +27,7 @@
+ #define SCALING_DATA_NEW_FREQ_OFFSET 12
+
+ #ifndef __ASSEMBLER__
++#ifdef CONFIG_MXS_RAM_FREQ_SCALING
+ void mxs_ram_freq_scale_end();
+ void DDR2EmiController_EDE1116_133MHz(void);
+ void DDR2EmiController_EDE1116_166MHz(void);
+@@ -35,6 +36,7 @@ void mDDREmiController_24MHz(void);
+ void mDDREmiController_133MHz(void);
+ void mDDREmiController_200MHz(void);
+ unsigned int *get_current_emidata();
++#endif /* CONFIG_MXS_RAM_FREQ_SCALING */
+ #endif
+
+ #endif
+Index: linux-2.6.35.3/arch/arm/plat-mxs/include/mach/clock.h
+===================================================================
+--- linux-2.6.35.3/arch/arm/plat-mxs/include/mach/clock.h
++++ linux-2.6.35.3/arch/arm/plat-mxs/include/mach/clock.h
+@@ -103,11 +103,6 @@ struct mxs_emi_scaling_data {
+ #ifdef CONFIG_MXS_RAM_FREQ_SCALING
+ extern int mxs_ram_freq_scale(struct mxs_emi_scaling_data *);
+ extern u32 mxs_ram_funcs_sz;
+-#else
+-static inline int mxs_ram_freq_scale(struct mxs_emi_scaling_data *p)
+-{
+-}
+-static u32 mxs_ram_funcs_sz;
+ #endif
+
+ /* Clock flags */
+Index: linux-2.6.35.3/arch/arm/plat-mxs/Kconfig
+===================================================================
+--- linux-2.6.35.3/arch/arm/plat-mxs/Kconfig
++++ linux-2.6.35.3/arch/arm/plat-mxs/Kconfig
+@@ -152,6 +152,8 @@ config MXS_AUART4_DMA_ENABLE
+ help
+ Set application uart 4 to dma mode
+
++endmenu
++
+ config MXS_RAM_FREQ_SCALING
+ bool "RAM frequency scaling support"
+ depends on ARCH_MXS
+@@ -163,10 +165,10 @@ choice
+
+ config MXS_RAM_MDDR
+ bool "mDDR SDRAM"
+- depends on ARCH_MX23
++ depends on ARCH_MXS
+ config MXS_RAM_DDR
+ bool "DDR SDRAM"
+- depends on ARCH_MX23
++ depends on ARCH_MXS
+
+ endchoice
+
+@@ -174,6 +176,5 @@ config IRAM_ALLOC
+ bool
+ default y
+ select GENERIC_ALLOCATOR
+-endmenu
+
+ endif
+
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