linux-kernel - [PATCH net-next] net: ethernet: ti: am65-cpts: reset pps genf adj settings on enable

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Message-ID: <20230316095232.2002680-1-s-vadapalli@ti.com>
Date:   Thu, 16 Mar 2023 15:22:32 +0530
From:   Siddharth Vadapalli <s-vadapalli@...com>
To:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <rogerq@...nel.org>,
        <jacob.e.keller@...el.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH net-next] net: ethernet: ti: am65-cpts: reset pps genf adj settings on enable

From: Grygorii Strashko <grygorii.strashko@...com>

The CPTS PPS GENf adjustment settings are invalid after it has been
disabled for a while, so reset them.

Fixes: eb9233ce6751 ("net: ethernet: ti: am65-cpts: adjust pps following ptp changes")
Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
 drivers/net/ethernet/ti/am65-cpts.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/ti/am65-cpts.c b/drivers/net/ethernet/ti/am65-cpts.c
index 16ee9c29cb35..8caf85acbb6a 100644
--- a/drivers/net/ethernet/ti/am65-cpts.c
+++ b/drivers/net/ethernet/ti/am65-cpts.c
@@ -636,6 +636,10 @@ static void am65_cpts_perout_enable_hw(struct am65_cpts *cpts,
 		val = lower_32_bits(cycles);
 		am65_cpts_write32(cpts, val, genf[req->index].length);
 
+		am65_cpts_write32(cpts, 0, genf[req->index].control);
+		am65_cpts_write32(cpts, 0, genf[req->index].ppm_hi);
+		am65_cpts_write32(cpts, 0, genf[req->index].ppm_low);
+
 		cpts->genf_enable |= BIT(req->index);
 	} else {
 		am65_cpts_write32(cpts, 0, genf[req->index].length);
-- 
2.25.1