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authorRobin Getz <robin.getz@analog.com>2007-08-03 18:07:17 +0800
committerBryan Wu <bryan.wu@analog.com>2007-08-03 18:07:17 +0800
commitf16295e7e7f2a2a15876f570f10d6dc8f1f36ab8 (patch)
tree71481c3d4ec249dddb6f16fe765a474a0d8b2fa9 /arch/blackfin/mach-common
parentb99ab54d4f11141b2ef3e50c3543b7243d3f49fb (diff)
Blackfin arch: Fix CCLK and SCLK checks
Fix CCLK and SCLK checks, combine all arch checks into one file for maintance. Checkins that remove more lines than they add are always good. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin/mach-common')
-rw-r--r--arch/blackfin/mach-common/Makefile2
-rw-r--r--arch/blackfin/mach-common/arch_checks.c55
-rw-r--r--arch/blackfin/mach-common/dpmc.S2
3 files changed, 57 insertions, 2 deletions
diff --git a/arch/blackfin/mach-common/Makefile b/arch/blackfin/mach-common/Makefile
index 0279ede7039..4d7733dfd5d 100644
--- a/arch/blackfin/mach-common/Makefile
+++ b/arch/blackfin/mach-common/Makefile
@@ -4,7 +4,7 @@
obj-y := \
cache.o cacheinit.o cplbhdlr.o cplbmgr.o entry.o \
- interrupt.o lock.o irqpanic.o
+ interrupt.o lock.o irqpanic.o arch_checks.o
obj-$(CONFIG_CPLB_INFO) += cplbinfo.o
obj-$(CONFIG_BFIN_SINGLE_CORE) += ints-priority-sc.o
diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c
new file mode 100644
index 00000000000..f9160d83b91
--- /dev/null
+++ b/arch/blackfin/mach-common/arch_checks.c
@@ -0,0 +1,55 @@
+/*
+ * File: arch/blackfin/mach-common/arch_checks.c
+ * Based on:
+ * Author: Robin Getz <rgetz@blackfin.uclinux.org>
+ *
+ * Created: 25Jul07
+ * Description: Do some checking to make sure things are OK
+ *
+ * Modified:
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <asm/mach/anomaly.h>
+#include <asm/mach-common/clocks.h>
+
+#ifdef CONFIG_BFIN_KERNEL_CLOCK
+
+# if (CONFIG_VCO_HZ > CONFIG_MAX_VCO_HZ)
+# error "VCO selected is more than maximum value. Please change the VCO multipler"
+# endif
+
+# if (CONFIG_SCLK_HZ > CONFIG_MAX_SCLK_HZ)
+# error "Sclk value selected is more than maximum. Please select a proper value for SCLK multiplier"
+# endif
+
+# if (CONFIG_SCLK_HZ < CONFIG_MIN_SCLK_HZ)
+# error "Sclk value selected is less than minimum. Please select a proper value for SCLK multiplier"
+# endif
+
+# if (ANOMALY_05000273) && (CONFIG_SCLK_HZ * 2 > CONFIG_CCLK_HZ)
+# error "ANOMALY 05000273, please make sure CCLK is at least 2x SCLK"
+# endif
+
+# if (CONFIG_SCLK_HZ > CONFIG_CCLK_HZ) && (CONFIG_SCLK_HZ != CONFIG_CLKIN_HZ) && (CONFIG_CCLK_HZ != CONFIG_CLKIN_HZ)
+# error "Please select sclk less than cclk"
+# endif
+
+#endif /* CONFIG_BFIN_KERNEL_CLOCK */
diff --git a/arch/blackfin/mach-common/dpmc.S b/arch/blackfin/mach-common/dpmc.S
index 04194dca015..39fbc286110 100644
--- a/arch/blackfin/mach-common/dpmc.S
+++ b/arch/blackfin/mach-common/dpmc.S
@@ -300,7 +300,7 @@ ENTRY(_sleep_deeper)
P0.H = hi(PLL_CTL);
P0.L = lo(PLL_CTL);
R5 = W[P0](z);
- R0.L = (MIN_VC/CONFIG_CLKIN_HZ) << 9;
+ R0.L = (CONFIG_MIN_VCO_HZ/CONFIG_CLKIN_HZ) << 9;
W[P0] = R0.l;
SSYNC;