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openwrt-xburst/target/linux/mpc83xx/patches-3.3/111-etsec27_war.patch
juhosg 01415999cf mpc83xx: add support for 3.3
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31553 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-05-02 18:27:22 +00:00

21 lines
580 B
Diff

--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -1005,7 +1005,16 @@ static int gfar_probe(struct platform_de
/* We need to delay at least 3 TX clocks */
udelay(2);
- tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
+ if ((mfspr(SPRN_SVR) & 0xffff) >= 0x0011) {
+ tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
+ } else {
+ /*
+ * Do not enable flow control on chips earlier than rev 1.1,
+ * because of the eTSEC27 erratum
+ */
+ tempval = 0;
+ }
+
gfar_write(&regs->maccfg1, tempval);
/* Initialize MACCFG2. */