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authorTrent Piepho <tpiepho@freescale.com>2008-12-03 15:16:34 -0800
committerAndrew Fleming-AFLEMING <afleming@freescale.com>2008-12-19 18:20:25 -0600
commita5d212a263c58cc746481bf1fc878510533ce7d6 (patch)
treeeb08c782227ec1399e96eb6dc082db2123262e41 /include/asm-ppc/fsl_lbc.h
parent58ec4866ed916c7e422f5107bb27b0822084728e (diff)
mpc8xxx: LCRR[CLKDIV] is sometimes five bits
On newer CPUs, 8536, 8572, and 8610, the CLKDIV field of LCRR is five bits instead of four. In order to avoid an ifdef, LCRR_CLKDIV is set to 0x1f on all systems. It should be safe as the fifth bit was defined as reserved and set to 0. Code that was using a hard coded 0x0f is changed to use LCRR_CLKDIV. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Jon Loeliger <jdl@freescale.com>
Diffstat (limited to 'include/asm-ppc/fsl_lbc.h')
-rw-r--r--include/asm-ppc/fsl_lbc.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/asm-ppc/fsl_lbc.h b/include/asm-ppc/fsl_lbc.h
index 51fc5c13b0..e492c62a8b 100644
--- a/include/asm-ppc/fsl_lbc.h
+++ b/include/asm-ppc/fsl_lbc.h
@@ -300,7 +300,10 @@
#define LCRR_EADC_2 0x00020000
#define LCRR_EADC_3 0x00030000
#define LCRR_EADC_4 0x00000000
-#define LCRR_CLKDIV 0x0000000F
+/* CLKDIV is five bits only on 8536, 8572, and 8610, so far, but the fifth bit
+ * should always be zero on older parts that have a four bit CLKDIV.
+ */
+#define LCRR_CLKDIV 0x0000001F
#define LCRR_CLKDIV_SHIFT 0
#define LCRR_CLKDIV_2 0x00000002
#define LCRR_CLKDIV_4 0x00000004