netdev - [PATCH net-next] net: ethernet: ti: am65-cpts: fix i2083 genf (and estf) Reconfiguration Issue

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Date:   Fri, 28 Aug 2020 23:33:25 +0300
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, <netdev@...r.kernel.org>
CC:     Sekhar Nori <nsekhar@...com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH net-next] net: ethernet: ti: am65-cpts: fix i2083 genf (and estf) Reconfiguration Issue

The new bit TX_GENF_CLR_EN has been added in AM65x SR2.0 to fix i2083
errata, which can be just set unconditionally for all SoCs.

Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
 drivers/net/ethernet/ti/am65-cpts.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/am65-cpts.c b/drivers/net/ethernet/ti/am65-cpts.c
index 365b5b9c6897..75056c14b161 100644
--- a/drivers/net/ethernet/ti/am65-cpts.c
+++ b/drivers/net/ethernet/ti/am65-cpts.c
@@ -83,6 +83,8 @@ struct am65_cpts_regs {
 #define AM65_CPTS_CONTROL_HW8_TS_PUSH_EN	BIT(15)
 #define AM65_CPTS_CONTROL_HW1_TS_PUSH_OFFSET	(8)
 
+#define AM65_CPTS_CONTROL_TX_GENF_CLR_EN	BIT(17)
+
 #define AM65_CPTS_CONTROL_TS_SYNC_SEL_MASK	(0xF)
 #define AM65_CPTS_CONTROL_TS_SYNC_SEL_SHIFT	(28)
 
@@ -986,7 +988,9 @@ struct am65_cpts *am65_cpts_create(struct device *dev, void __iomem *regs,
 
 	am65_cpts_set_add_val(cpts);
 
-	am65_cpts_write32(cpts, AM65_CPTS_CONTROL_EN | AM65_CPTS_CONTROL_64MODE,
+	am65_cpts_write32(cpts, AM65_CPTS_CONTROL_EN |
+			  AM65_CPTS_CONTROL_64MODE |
+			  AM65_CPTS_CONTROL_TX_GENF_CLR_EN,
 			  control);
 	am65_cpts_write32(cpts, AM65_CPTS_INT_ENABLE_TS_PEND_EN, int_enable);
 
-- 
2.17.1