From 043d1e729b0fbaf2b69386fe45290b8a9a18a6a9 Mon Sep 17 00:00:00 2001 From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Date: Wed, 6 Sep 2017 21:21:08 +0300 Subject: [PATCH] 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> --- arch/arc/plat-axs10x/axs10x.c | 7 +++++++ 1 file changed, 7 insertions(+) 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); } -- GitLab