net: stmmac: dwmac_lib: enlarge dma reset timeout

[ Upstream commit 56311a315da7ebc668dbcc2f1c99689cc10796c4 ]

If the phy enables power saving technology, the dwmac's software reset
needs more time to complete, enlarge dma reset timeout to 200000us.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20201113090902.5c7aab1a@xhacker.debian
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index cb87d31a99dfb6d990f752fa74f0100116f989b2..57a53a600aa556672c82b12d40f4a35bc572187d 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -23,7 +23,7 @@ int dwmac_dma_reset(void __iomem *ioaddr)
 
        return readl_poll_timeout(ioaddr + DMA_BUS_MODE, value,
                                 !(value & DMA_BUS_MODE_SFT_RESET),
-                                10000, 100000);
+                                10000, 200000);
 }
 
 /* CSR1 enables the transmit DMA to check for new descriptor */