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>

1 files changed, 57 insertions, 2 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index f8edfbe5fae..5f09d934932 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