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* [PATCH net-next 6/6] net: stmmac: qos-eth: use dwmac_set_tx_clk_gmii()
@ 2023-09-11 15:29 Russell King (Oracle)
  0 siblings, 0 replies; 3+ messages in thread
From: Russell King (Oracle) @ 2023-09-11 15:29 UTC (permalink / raw)
  To: Alexandre Torgue, Jose Abreu
  Cc: Alexei Starovoitov, bpf, Daniel Borkmann, David S. Miller,
	Emil Renner Berthing, Eric Dumazet, Fabio Estevam, Jakub Kicinski,
	Jesper Dangaard Brouer, John Fastabend, linux-arm-kernel,
	linux-stm32, Maxime Coquelin, netdev, NXP Linux Team, Paolo Abeni,
	Pengutronix Kernel Team, Samin Guo, Sascha Hauer, Shawn Guo

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 .../stmicro/stmmac/dwmac-dwc-qos-eth.c        | 37 ++++++-------------
 1 file changed, 11 insertions(+), 26 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 61ebf36da13d..a8fae37b9858 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
@@ -22,6 +22,7 @@
 #include <linux/stmmac.h>
 
 #include "stmmac_platform.h"
+#include "stmmac_plat_lib.h"
 #include "dwmac4.h"
 
 struct tegra_eqos {
@@ -181,32 +182,10 @@ 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;
 	u32 value;
 	int err;
 
-	switch (speed) {
-	case SPEED_1000:
-		needs_calibration = true;
-		rate = 125000000;
-		break;
-
-	case SPEED_100:
-		needs_calibration = true;
-		rate = 25000000;
-		break;
-
-	case SPEED_10:
-		rate = 2500000;
-		break;
-
-	default:
-		dev_err(eqos->dev, "invalid speed %u\n", speed);
-		break;
-	}
-
-	if (needs_calibration) {
+	if (speed == SPEED_1000 || speed == SPEED_100) {
 		/* calibrate */
 		value = readl(eqos->regs + SDMEMCOMPPADCTRL);
 		value |= SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD;
@@ -246,9 +225,15 @@ static void tegra_eqos_fix_speed(void *priv, unsigned int speed, unsigned int mo
 		writel(value, eqos->regs + AUTO_CAL_CONFIG);
 	}
 
-	err = clk_set_rate(eqos->clk_tx, rate);
-	if (err < 0)
-		dev_err(eqos->dev, "failed to set TX rate: %d\n", err);
+	err = dwmac_set_tx_clk_gmii(eqos->clk_tx, speed);
+	if (err == -ENOTSUPP) {
+		dev_err(eqos->dev, "invalid speed %dMbps\n", speed);
+		err = dwmac_set_tx_clk_gmii(eqos->clk_tx, SPEED_1000);
+	} else if (err) {
+		dev_err(eqos->dev,
+			"failed to set tx rate for speed %dMbps: %pe\n",
+			speed, ERR_PTR(err));
+	}
 }
 
 static int tegra_eqos_init(struct platform_device *pdev, void *priv)
-- 
2.30.2


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^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH net-next 0/6] net: stmmac: add and use library for setting clock
@ 2023-09-11 15:28 Russell King (Oracle)
  2023-09-11 15:29 ` [PATCH net-next 6/6] net: stmmac: qos-eth: use dwmac_set_tx_clk_gmii() Russell King (Oracle)
  0 siblings, 1 reply; 3+ messages in thread
From: Russell King (Oracle) @ 2023-09-11 15:28 UTC (permalink / raw)
  To: Alexandre Torgue, Jose Abreu
  Cc: Alexei Starovoitov, bpf, Daniel Borkmann, David S. Miller,
	Emil Renner Berthing, Eric Dumazet, Fabio Estevam, Jakub Kicinski,
	Jesper Dangaard Brouer, John Fastabend, linux-arm-kernel,
	linux-stm32, Maxime Coquelin, netdev, NXP Linux Team, Paolo Abeni,
	Pengutronix Kernel Team, Samin Guo, Sascha Hauer, Shawn Guo

Hi,

There is a common theme throughout several "bsps" in the stmmac driver
which all code up the same thing: for 10M, 100M and 1G, select the
appropriate 2.5MHz, 25MHz, or 125MHz clock.

Rather than having every BSP implement the same thing but slightly
differently, let's provide a single implementation which is passed
the struct clk and the speed, and have that do the speed to clock
rate decode.

Note: only build tested.

 drivers/net/ethernet/stmicro/stmmac/Makefile       |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c    | 37 ++++---------
 drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c    | 27 +++-------
 .../net/ethernet/stmicro/stmmac/dwmac-intel-plat.c | 35 ++++---------
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c     | 61 ++++++----------------
 .../net/ethernet/stmicro/stmmac/dwmac-starfive.c   | 29 +++-------
 .../net/ethernet/stmicro/stmmac/stmmac_plat_lib.c  | 29 ++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_plat_lib.h  |  8 +++
 8 files changed, 91 insertions(+), 137 deletions(-)
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/stmmac_plat_lib.c
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/stmmac_plat_lib.h

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

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^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-09-14 12:13 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2023-09-11 15:29 [PATCH net-next 6/6] net: stmmac: qos-eth: use dwmac_set_tx_clk_gmii() Russell King (Oracle)
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2023-09-11 15:28 [PATCH net-next 0/6] net: stmmac: add and use library for setting clock Russell King (Oracle)
2023-09-11 15:29 ` [PATCH net-next 6/6] net: stmmac: qos-eth: use dwmac_set_tx_clk_gmii() Russell King (Oracle)
2023-09-14 12:13   ` Serge Semin

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