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From:   Wong Vee Khee <vee.khee.wong@linux.intel.com>
To:     Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        Alexandre Torgue <alexandre.torgue@st.com>,
        Jose Abreu <joabreu@synopsys.com>,
        "David S . Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc:     netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Voon Wei Feng <weifeng.voon@intel.com>,
        Ong Boon Leong <boon.leong.ong@intel.com>,
        Wong Vee Khee <vee.khee.wong@intel.com>
Subject: [PATCH net-next 1/1] net: stmmac: enable MTL ECC Error Address Status Over-ride by default
Date:   Thu,  1 Apr 2021 00:18:25 +0800
Message-Id: <20210331161825.32100-1-vee.khee.wong@linux.intel.com>
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From: Voon Weifeng <weifeng.voon@intel.com>

Turn on the MEEAO field of MTL_ECC_Control_Register by default.

As the MTL ECC Error Address Status Over-ride(MEEAO) is set by default,
the following error address fields will hold the last valid address
where the error is detected.

Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Tan Tee Min <tee.min.tan@intel.com>
Co-developed-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac5.c | 1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac5.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac5.c b/drivers/net/ethernet/stmicro/stmmac/dwmac5.c
index 5b010ebfede9..d8c6ff725237 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac5.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac5.c
@@ -192,6 +192,7 @@ int dwmac5_safety_feat_config(void __iomem *ioaddr, unsigned int asp)
 
 	/* 1. Enable Safety Features */
 	value = readl(ioaddr + MTL_ECC_CONTROL);
+	value |= MEEAO; /* MTL ECC Error Addr Status Override */
 	value |= TSOEE; /* TSO ECC */
 	value |= MRXPEE; /* MTL RX Parser ECC */
 	value |= MESTEE; /* MTL EST ECC */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac5.h b/drivers/net/ethernet/stmicro/stmmac/dwmac5.h
index ff555d8b0cdf..6b2fd37b29ad 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac5.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac5.h
@@ -98,6 +98,7 @@
 #define ADDR				GENMASK(15, 0)
 #define MTL_RXP_IACC_DATA		0x00000cb4
 #define MTL_ECC_CONTROL			0x00000cc0
+#define MEEAO				BIT(8)
 #define TSOEE				BIT(4)
 #define MRXPEE				BIT(3)
 #define MESTEE				BIT(2)
-- 
2.25.1