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authorEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>2017-09-06 21:21:08 +0300
committerVineet Gupta <vgupta@synopsys.com>2017-10-03 20:36:49 -0700
commit043d1e729b0fbaf2b69386fe45290b8a9a18a6a9 (patch)
tree1ca2719f8327308a46bb12e088b6c2a8291de4fd /arch/arc/plat-axs10x
parent9e66317d3c92ddaab330c125dfe9d06eee268aff (diff)
downloadlinux-043d1e729b0fbaf2b69386fe45290b8a9a18a6a9.tar.gz
ARC: [plat-axs103] Add temporary quirk to reset ethernet IP
DW ethernet controller on AXS10x hangs sometimes after SW reset, so add temporary quirk to reset DW ethernet controller IP core. This quirk can be removed after axs10x reset driver (see http://patchwork.ozlabs.org/patch/800273/) or simple reset driver (see https://patchwork.kernel.org/patch/9903375/) will be available in upstream. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/plat-axs10x')
-rw-r--r--arch/arc/plat-axs10x/axs10x.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
index f1ac6790da5f..cf14ebc36916 100644
--- a/arch/arc/plat-axs10x/axs10x.c
+++ b/arch/arc/plat-axs10x/axs10x.c
@@ -111,6 +111,13 @@ static void __init axs10x_early_init(void)
axs10x_enable_gpio_intc_wire();
+ /*
+ * Reset ethernet IP core.
+ * TODO: get rid of this quirk after axs10x reset driver (or simple
+ * reset driver) will be available in upstream.
+ */
+ iowrite32((1 << 5), (void __iomem *) CREG_MB_SW_RESET);
+
scnprintf(mb, 32, "MainBoard v%d", mb_rev);
axs10x_print_board_ver(CREG_MB_VER, mb);
}