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authorFelix Fietkau <nbd@openwrt.org>2010-02-16 18:29:16 +0000
committerFelix Fietkau <nbd@openwrt.org>2010-02-16 18:29:16 +0000
commit2253350aa6a1cc0cea67d5ac5990f7fd77c46898 (patch)
tree6c528537f405cfbec0b4dcd7e3792845b8c6c324 /target/linux
parentc5282720252d26ae9da5f3f0e41841746a7284e7 (diff)
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mpc83xx: add a workaround for erratum eTSEC27 in earlier mpc8313 chip revs
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19670 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/mpc83xx/patches-2.6.32/110-etsec27_war.patch18
1 files changed, 18 insertions, 0 deletions
diff --git a/target/linux/mpc83xx/patches-2.6.32/110-etsec27_war.patch b/target/linux/mpc83xx/patches-2.6.32/110-etsec27_war.patch
new file mode 100644
index 0000000000..111434b2cd
--- /dev/null
+++ b/target/linux/mpc83xx/patches-2.6.32/110-etsec27_war.patch
@@ -0,0 +1,18 @@
+--- a/drivers/net/gianfar.c
++++ b/drivers/net/gianfar.c
+@@ -334,7 +334,14 @@ static int gfar_probe(struct of_device *
+ /* We need to delay at least 3 TX clocks */
+ udelay(2);
+
+- tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
++ /*
++ * Do not enable flow control on chips earlier than rev 1.1,
++ * because of the eTSEC27 erratum
++ */
++ tempval = 0;
++ if (mfspr(SPRN_SVR) & 0xffff >= 0x0011)
++ tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
++
+ gfar_write(&priv->regs->maccfg1, tempval);
+
+ /* Initialize MACCFG2. */