arm/km: fix memory settings

On kmcoge5un we faced some serious problems with the memory during
temperature tests. Reason was that we overwrite some registers for
memory settings which have to leave untouched. These where registers
0x20148 , 0x2014c and 0x20154.
So writing these registers is prohibited and this patch removes them
from all km related config files. Even if the problem was only
seen on kmcoge5un.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>

diff --git a/board/keymile/km_arm/kwbimage-memphis.cfg b/board/keymile/km_arm/kwbimage-memphis.cfg
index 6df2ad79029d8971cb9babae28448809e20d8f02..5aa0de2528d152db61b843669c8a4232e71a30b2 100644 (file)
--- a/board/keymile/km_arm/kwbimage-memphis.cfg
+++ b/board/keymile/km_arm/kwbimage-memphis.cfg
@@ -55,9 +55,9 @@ DATA 0xFFD10008 0x00001100    # MPP Control 2 Register
 DATA 0xFFD100E0 0x1B1B1B1B     # IO Configuration 0 Register
 DATA 0xFFD20134 0x66666666     # L2 RAM Timing 0 Register
 DATA 0xFFD20138 0x66666666     # L2 RAM Timing 1 Register
-DATA 0xFFD20154 0x00000200     # CPU RAM Management Control3 Register
-DATA 0xFFD2014C 0x00001C00     # CPU RAM Management Control1 Register
-DATA 0xFFD20148 0x00000001     # CPU RAM Management Control0 Register
+
+# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them untouched!
+# If not it could cause KW Exceptions during boot in Fast Corners/High Voltage
 
 #Dram initalization
 DATA 0xFFD01400 0x430004E0     # SDRAM Configuration Register

diff --git a/board/keymile/km_arm/kwbimage.cfg b/board/keymile/km_arm/kwbimage.cfg
index b2f51936f4debff917a3c2c4f843c6b4a0fbb00f..e5e9942c1aa11ae76d8915fb8e5ac8fc88244885 100644 (file)
--- a/board/keymile/km_arm/kwbimage.cfg
+++ b/board/keymile/km_arm/kwbimage.cfg
@@ -52,9 +52,9 @@ DATA 0xFFD10008 0x00001100    # MPP Control 2 Register
 DATA 0xFFD100E0 0x1B1B1B1B     # IO Configuration 0 Register
 DATA 0xFFD20134 0x66666666     # L2 RAM Timing 0 Register
 DATA 0xFFD20138 0x66666666     # L2 RAM Timing 1 Register
-DATA 0xFFD20154 0x00000200     # CPU RAM Management Control3 Register
-DATA 0xFFD2014C 0x00001C00     # CPU RAM Management Control1 Register
-DATA 0xFFD20148 0x00000001     # CPU RAM Management Control0 Register
+
+# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them untouched!
+# If not it could cause KW Exceptions during boot in Fast Corners/High Voltage
 
 #Dram initalization
 DATA 0xFFD01400 0x43000400     # SDRAM Configuration Register

diff --git a/board/keymile/km_arm/kwbimage_128M16_1.cfg b/board/keymile/km_arm/kwbimage_128M16_1.cfg
index bcce9073f6f8f8490287649ee1dd1dfda55d98a5..5de8df70fd6607403bd1c21512b9fe0815c98723 100644 (file)
--- a/board/keymile/km_arm/kwbimage_128M16_1.cfg
+++ b/board/keymile/km_arm/kwbimage_128M16_1.cfg
@@ -98,29 +98,8 @@ DATA 0xFFD20138 0x66666666   # L2 RAM Timing 1 Register
 # bit 19-18: 1, ECC RAM WTC RAM0
 # bit 31-20: ???,Reserve
 
-DATA 0xFFD20154 0x00000200     # CPU RAM Management Control3 Register
-# bit 23-0:  0x000200, Addr Config tuning
-# bit 31-24: 0,        Reserved
-
-# ??? Missing register # CPU RAM Management Control2 Register
-
-DATA 0xFFD2014C 0x00001C00     # CPU RAM Management Control1 Register
-# bit 15-0:  0x1C00, Opmux Tuning
-# bit 31-16: 0,      Pc Dp Tuning
-
-DATA 0xFFD20148 0x00000001     # CPU RAM Management Control0 Register
-# bit 1-0:   1, addr clk tune
-# bit 3-2:   0, reserved
-# bit 5-4:   0, dtcmp clk tune
-# bit 7-6:   0, reserved
-# bit 9-8:   0, macdrv clk tune
-# bit 11-10: 0, opmuxgm2 clk tune
-# bit 15-14: 0, rf clk tune
-# bit 17-16: 0, rfbypass clk tune
-# bit 19-18: 0, pc dp clk tune
-# bit 23-20: 0, icache clk tune
-# bit 27:24: 0, dcache clk tune
-# bit 31:28: 0, regfile tunin
+# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them untouched!
+# If not it could cause KW Exceptions during boot in Fast Corners/High Voltage
 
 # SDRAM initalization
 DATA 0xFFD01400 0x430004E0     # SDRAM Configuration Register

diff --git a/board/keymile/km_arm/kwbimage_256M8_1.cfg b/board/keymile/km_arm/kwbimage_256M8_1.cfg
index 3e1237bbe31b1d2f7f67cbf5ff2c4cbce7c56393..d0a09f61d2d963df49e911c9cd69fa38b951c1d3 100644 (file)
--- a/board/keymile/km_arm/kwbimage_256M8_1.cfg
+++ b/board/keymile/km_arm/kwbimage_256M8_1.cfg
@@ -100,29 +100,8 @@ DATA 0xFFD20138 0x66666666 # L2 RAM Timing 1 Register
 # bit 19-18: 1, ECC RAM WTC RAM0
 # bit 31-20: ?,Reserved
 
-DATA 0xFFD20154 0x00000200     # CPU RAM Management Control3 Register
-# bit 23-0:  0x000200, Addr Config tuning
-# bit 31-24: 0,        Reserved
-
-# ??? Missing register # CPU RAM Management Control2 Register
-
-DATA 0xFFD2014C 0x00001C00     # CPU RAM Management Control1 Register
-# bit 15-0:  0x1C00, Opmux Tuning
-# bit 31-16: 0,      Pc Dp Tuning
-
-DATA 0xFFD20148 0x00000001     # CPU RAM Management Control0 Register
-# bit 1-0:   1, addr clk tune
-# bit 3-2:   0, reserved
-# bit 5-4:   0, dtcmp clk tune
-# bit 7-6:   0, reserved
-# bit 9-8:   0, macdrv clk tune
-# bit 11-10: 0, opmuxgm2 clk tune
-# bit 15-14: 0, rf clk tune
-# bit 17-16: 0, rfbypass clk tune
-# bit 19-18: 0, pc dp clk tune
-# bit 23-20: 0, icache clk tune
-# bit 27:24: 0, dcache clk tune
-# bit 31:28: 0, regfile tunin
+# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them untouched!
+# If not it could cause KW Exceptions during boot in Fast Corners/High Voltage
 
 # SDRAM initalization
 DATA 0xFFD01400 0x430004E0     # SDRAM Configuration Register