netdev - [PATCH RFC net-next v6 05/15] net: dwmac-dwc-qos-eth: Use helper rgmii

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Message-Id: <20241124-upstream_s32cc_gmac-v6-5-dc5718ccf001@oss.nxp.com>
Date: Sun, 24 Nov 2024 23:42:36 +0100
From: Jan Petrous via B4 Relay <devnull+jan.petrous.oss.nxp.com@...nel.org>
To: Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Jose Abreu <joabreu@...opsys.com>, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Vinod Koul <vkoul@...nel.org>, 
 Richard Cochran <richardcochran@...il.com>, Andrew Lunn <andrew@...n.ch>, 
 Heiner Kallweit <hkallweit1@...il.com>, 
 Russell King <linux@...linux.org.uk>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Emil Renner Berthing <kernel@...il.dk>, 
 Minda Chen <minda.chen@...rfivetech.com>, 
 Nicolas Ferre <nicolas.ferre@...rochip.com>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>, 
 Iyappan Subramanian <iyappan@...amperecomputing.com>, 
 Keyur Chudgar <keyur@...amperecomputing.com>, 
 Quan Nguyen <quan@...amperecomputing.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Giuseppe Cavallaro <peppe.cavallaro@...com>, 
 Andrew Lunn <andrew+netdev@...n.ch>
Cc: linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org, imx@...ts.linux.dev, 
 devicetree@...r.kernel.org, NXP S32 Linux Team <s32@....com>, 
 "Jan Petrous (OSS)" <jan.petrous@....nxp.com>, 
 "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: [PATCH RFC net-next v6 05/15] net: dwmac-dwc-qos-eth: Use helper
 rgmii_clock

From: "Jan Petrous (OSS)" <jan.petrous@....nxp.com>

Utilize a new helper function rgmii_clock().

Reviewed-by: Andrew Lunn <andrew@...n.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Jan Petrous (OSS) <jan.petrous@....nxp.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
index 83290e707df5..bd4eb187f8c6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
@@ -181,24 +181,19 @@ static void dwc_qos_remove(struct platform_device *pdev)
 static void tegra_eqos_fix_speed(void *priv, unsigned int speed, unsigned int mode)
 {
 	struct tegra_eqos *eqos = priv;
-	unsigned long rate = 125000000;
 	bool needs_calibration = false;
+	long rate = 125000000;
 	u32 value;
 	int err;

 	switch (speed) {
 	case SPEED_1000:
-		needs_calibration = true;
-		rate = 125000000;
-		break;
-
 	case SPEED_100:
 		needs_calibration = true;
-		rate = 25000000;
-		break;
+		fallthrough;

 	case SPEED_10:
-		rate = 2500000;
+		rate = rgmii_clock(speed);
 		break;

 	default:

-- 
2.47.0