net: dwmac-intel-plat: Use helper rgmii_clock

Utilize a new helper function rgmii_clock().

When in, remove dead code in kmb_eth_fix_mac_speed().

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jan Petrous (OSS) <jan.petrous@oss.nxp.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20241205-upstream_s32cc_gmac-v8-7-ec1d180df815@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
index d94f0a150e934a1e350fad208b6651dd15343d7d..ddee6154d40bc08d1e95ff6e60383ad5b6960784 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
@@ -31,27 +31,13 @@ struct intel_dwmac_data {
 static void kmb_eth_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
 {
        struct intel_dwmac *dwmac = priv;
-       unsigned long rate;
+       long rate;
        int ret;
 
-       rate = clk_get_rate(dwmac->tx_clk);
-
-       switch (speed) {
-       case SPEED_1000:
-               rate = 125000000;
-               break;
-
-       case SPEED_100:
-               rate = 25000000;
-               break;
-
-       case SPEED_10:
-               rate = 2500000;
-               break;
-
-       default:
+       rate = rgmii_clock(speed);
+       if (rate < 0) {
                dev_err(dwmac->dev, "Invalid speed\n");
-               break;
+               return;
        }
 
        ret = clk_set_rate(dwmac->tx_clk, rate);