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From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: davem@davemloft.net, kuba@kernel.org,
	linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org,
	robh+dt@kernel.org, netdev@vger.kernel.org
Cc: jianxin.pan@amlogic.com, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, khilman@baylibre.com,
	narmstrong@baylibre.com, jbrunet@baylibre.com, andrew@lunn.ch,
	f.fainelli@gmail.com,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH RFC v2 2/5] net: stmmac: dwmac-meson8b: fix enabling the timing-adjustment clock
Date: Sun, 15 Nov 2020 19:52:07 +0100	[thread overview]
Message-ID: <20201115185210.573739-3-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20201115185210.573739-1-martin.blumenstingl@googlemail.com>

The timing-adjustment clock only has to be enabled when a) there is a
2ns RX delay configured using device-tree and b) the phy-mode indicates
that the RX delay should be enabled.

Only enable the RX delay if both are true, instead of (by accident) also
enabling it when there's the 2ns RX delay configured but the phy-mode
incicates that the RX delay is not used.

Fixes: 9308c47640d515 ("net: stmmac: dwmac-meson8b: add support for the RX delay configuration")
Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
index dc0b8b6d180d..e27e2e7a53fd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
@@ -301,7 +301,7 @@ static int meson8b_init_prg_eth(struct meson8b_dwmac *dwmac)
 		return -EINVAL;
 	}
 
-	if (rx_dly_config & PRG_ETH0_ADJ_ENABLE) {
+	if (delay_config & PRG_ETH0_ADJ_ENABLE) {
 		if (!dwmac->timing_adj_clk) {
 			dev_err(dwmac->dev,
 				"The timing-adjustment clock is mandatory for the RX delay re-timing\n");
-- 
2.29.2


  parent reply	other threads:[~2020-11-15 18:53 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-15 18:52 [PATCH RFC v2 0/5] dwmac-meson8b: picosecond precision RX delay support Martin Blumenstingl
2020-11-15 18:52 ` [PATCH RFC v2 1/5] dt-bindings: net: dwmac-meson: use picoseconds for the RGMII RX delay Martin Blumenstingl
2020-11-17  2:01   ` Andrew Lunn
2020-11-17 18:32   ` Florian Fainelli
2020-12-07 19:17   ` Rob Herring
2020-12-13 16:59     ` Martin Blumenstingl
2020-12-15 13:40       ` Rob Herring
2020-11-15 18:52 ` Martin Blumenstingl [this message]
2020-11-17  2:02   ` [PATCH RFC v2 2/5] net: stmmac: dwmac-meson8b: fix enabling the timing-adjustment clock Andrew Lunn
2020-11-17 18:34   ` Florian Fainelli
2020-11-15 18:52 ` [PATCH RFC v2 3/5] net: stmmac: dwmac-meson8b: use picoseconds for the RGMII RX delay Martin Blumenstingl
2020-11-17  2:04   ` Andrew Lunn
2020-11-17 18:36   ` Florian Fainelli
2020-11-17 22:50     ` Martin Blumenstingl
2020-11-15 18:52 ` [PATCH RFC v2 4/5] net: stmmac: dwmac-meson8b: move RGMII delays into a separate function Martin Blumenstingl
2020-11-17  2:05   ` Andrew Lunn
2020-11-17 18:36   ` Florian Fainelli
2020-11-15 18:52 ` [PATCH RFC v2 5/5] net: stmmac: dwmac-meson8b: add support for the RGMII RX delay on G12A Martin Blumenstingl
2020-11-17  2:06   ` Andrew Lunn
2020-11-17 18:37   ` Florian Fainelli
2020-11-17 22:55 ` [PATCH RFC v2 0/5] dwmac-meson8b: picosecond precision RX delay support Martin Blumenstingl

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