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diff -Nurd u-boot-2009.03.orig/board/hipox/eth.c u-boot-2009.03/board/hipox/eth.c
--- u-boot-2009.03.orig/board/hipox/eth.c 2009-04-20 16:00:48.000000000 +0200
+++ u-boot-2009.03/board/hipox/eth.c 2009-04-20 16:01:54.000000000 +0200
@@ -1415,6 +1415,12 @@
// Disable all GMAC interrupts
dma_reg_write(priv, DMA_INT_ENABLE_REG, 0);
+#ifdef CONFIG_HIPOX
+ // reset phy first, preventing lock up after linux warm start
+ if (phy_detect())
+ start_phy_reset();
+#endif
+
// Reset the entire GMAC
dma_reg_write(priv, DMA_BUS_MODE_REG, 1UL << DMA_BUS_MODE_SWR_BIT);
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