summaryrefslogtreecommitdiff
path: root/arch/blackfin/Kconfig
diff options
context:
space:
mode:
authorMichael Hennerich <michael.hennerich@analog.com>2009-01-07 18:14:39 +0300
committerBryan Wu <cooloney@kernel.org>2009-01-07 18:14:39 +0300
commit73feb5c09dcf0d64beb67aa5e1f79e11a388e0ff (patch)
tree09fa1f153a2ca810ad72978736f85359205d64a3 /arch/blackfin/Kconfig
parentc97618d3b7b8ef86a966c4b67b54e5ca15814905 (diff)
downloadlinux-73feb5c09dcf0d64beb67aa5e1f79e11a388e0ff.tar.xz
Blackfin arch: fix bugs and unify BFIN_KERNEL_CLOCK option
- remove duplicated code and headers - add option allowing arbitrary SDRAM/DDR Timing parameters. - mark automatically calculated timings as EXPERIMENTAL - fix comment header block Related to BUGs: - kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on. - kernel does not boot if re-program clocks [ Mike Frysinger <vapier.adi@gmail.com> - fix comment header - mark do_sync static - document the DMA shutdown - simplify SIC_IWR handling - fix ANOMALY_05000265 handling to work as intended ] Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/Kconfig')
-rw-r--r--arch/blackfin/Kconfig59
1 files changed, 57 insertions, 2 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index f8edfbe5faed..5f09d9349322 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -473,6 +473,61 @@ config MEM_MT46V32M16_5B
bool "MT46V32M16_5B"
endchoice
+choice
+ prompt "DDR/SDRAM Timing"
+ depends on BFIN_KERNEL_CLOCK
+ default BFIN_KERNEL_CLOCK_MEMINIT_CALC
+ help
+ This option allows you to specify Blackfin SDRAM/DDR Timing parameters
+ The calculated SDRAM timing parameters may not be 100%
+ accurate - This option is therefore marked experimental.
+
+config BFIN_KERNEL_CLOCK_MEMINIT_CALC
+ bool "Calculate Timings (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+
+config BFIN_KERNEL_CLOCK_MEMINIT_SPEC
+ bool "Provide accurate Timings based on target SCLK"
+ help
+ Please consult the Blackfin Hardware Reference Manuals as well
+ as the memory device datasheet.
+ http://docs.blackfin.uclinux.org/doku.php?id=bfin:sdram
+endchoice
+
+menu "Memory Init Control"
+ depends on BFIN_KERNEL_CLOCK_MEMINIT_SPEC
+
+config MEM_DDRCTL0
+ depends on BF54x
+ hex "DDRCTL0"
+ default 0x0
+
+config MEM_DDRCTL1
+ depends on BF54x
+ hex "DDRCTL1"
+ default 0x0
+
+config MEM_DDRCTL2
+ depends on BF54x
+ hex "DDRCTL2"
+ default 0x0
+
+config MEM_EBIU_DDRQUE
+ depends on BF54x
+ hex "DDRQUE"
+ default 0x0
+
+config MEM_SDRRC
+ depends on !BF54x
+ hex "SDRRC"
+ default 0x0
+
+config MEM_SDGCTL
+ depends on !BF54x
+ hex "SDGCTL"
+ default 0x0
+endmenu
+
config MAX_MEM_SIZE
int "Max SDRAM Memory Size in MBytes"
depends on !MPU
@@ -1104,13 +1159,13 @@ config BFIN_CPU_FREQ
config CPU_VOLTAGE
bool "CPU Voltage scaling"
- depends on EXPERIMENTAL
+ depends on EXPERIMENTAL
depends on CPU_FREQ
default n
help
Say Y here if you want CPU voltage scaling according to the CPU frequency.
This option violates the PLL BYPASS recommendation in the Blackfin Processor
- manuals. There is a theoretical risk that during VDDINT transitions
+ manuals. There is a theoretical risk that during VDDINT transitions
the PLL may unlock.
endmenu