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net: ethernet: stmmac: Fix altr_tse_pcs SGMII Initialization

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[ Upstream commit 77032732d0 ]

Fix NETDEV WATCHDOG timeout on startup by adding missing register
writes that properly setup SGMII.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thor Thayer
2017-05-31 14:28:47 -05:00
committed by Chris
parent f04cc08256
commit 9a0897b97d
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/stmicro/stmmac/altr_tse_pcs.c
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@@ -37,6 +37,7 @@
#define TSE_PCS_CONTROL_AN_EN_MASK BIT(12)
#define TSE_PCS_CONTROL_REG 0x00
#define TSE_PCS_CONTROL_RESTART_AN_MASK BIT(9)
#define TSE_PCS_CTRL_AUTONEG_SGMII 0x1140
#define TSE_PCS_IF_MODE_REG 0x28
#define TSE_PCS_LINK_TIMER_0_REG 0x24
#define TSE_PCS_LINK_TIMER_1_REG 0x26
@@ -65,6 +66,7 @@
#define TSE_PCS_SW_RESET_TIMEOUT 100
#define TSE_PCS_USE_SGMII_AN_MASK BIT(1)
#define TSE_PCS_USE_SGMII_ENA BIT(0)
#define TSE_PCS_IF_USE_SGMII 0x03
#define SGMII_ADAPTER_CTRL_REG 0x00
#define SGMII_ADAPTER_DISABLE 0x0001
@@ -101,7 +103,9 @@ int tse_pcs_init(void __iomem *base, struct tse_pcs *pcs)
{
int ret = 0;
writew(TSE_PCS_USE_SGMII_ENA, base + TSE_PCS_IF_MODE_REG);
writew(TSE_PCS_IF_USE_SGMII, base + TSE_PCS_IF_MODE_REG);
writew(TSE_PCS_CTRL_AUTONEG_SGMII, base + TSE_PCS_CONTROL_REG);
writew(TSE_PCS_SGMII_LINK_TIMER_0, base + TSE_PCS_LINK_TIMER_0_REG);
writew(TSE_PCS_SGMII_LINK_TIMER_1, base + TSE_PCS_LINK_TIMER_1_REG);