[U-Boot] [PATCH] board/b4860qds:Slow MDC clock to comply IEEE specs in PBI config
Prabhakar Kushwaha
prabhakar at freescale.com
Fri Feb 28 09:48:59 CET 2014
With the default value of MDIO_CLK_DIV generatee MDC is too high and It is
violating the IEEE specs much higher than 2.5Mhz.
Although there is errata(A-006260) for EMI2(MDIO2), but same errata is
been hit on EMI1(MDIO1). unfortunately this errata never hit on B4 rev1.
So reduced the MDIO_CLK_DIV value.
Signed-off-by: Prabhakar Kushwaha <prabhakar at freescale.com>
---
board/freescale/b4860qds/b4_pbi.cfg | 3 +++
1 file changed, 3 insertions(+)
diff --git a/board/freescale/b4860qds/b4_pbi.cfg b/board/freescale/b4860qds/b4_pbi.cfg
index 57b726e..05377ba 100644
--- a/board/freescale/b4860qds/b4_pbi.cfg
+++ b/board/freescale/b4860qds/b4_pbi.cfg
@@ -22,6 +22,9 @@
09110024 00100008
09110028 00100008
0911002c 00100008
+#slowing down the MDC clock to make it <= 2.5 MHZ
+094fc030 00008148
+094fd030 00008148
#Flush PBL data
09138000 00000000
091380c0 00000000
--
1.7.9.5
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