ar71xx: Use private version of ath79_setup_qca955x_eth_cfg for MR900

The MR900 must unset some bits in ETH_CFG which were set by u-boot to work
correctly under OpenWrt. But the global function
ath79_setup_qca955x_eth_cfg will not unset all of them to increase the
backward compatiblity with older mach-* files. A private (simplified)
version for MR900 can be used instead.

Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>

SVN-Revision: 49069

target/linux/ar71xx/files/arch/mips/ath79/mach-mr900.c

@@ -110,6 +110,28 @@ static struct mdio_board_info mr900_mdio0_info[] = {
 	},
 };
 
+static void __init mr900_setup_qca955x_eth_cfg(u32 mask,
+					       unsigned int rxd,
+					       unsigned int rxdv,
+					       unsigned int txd,
+					       unsigned int txe)
+{
+	void __iomem *base;
+	u32 t;
+
+	base = ioremap(QCA955X_GMAC_BASE, QCA955X_GMAC_SIZE);
+
+	t = mask;
+	t |= rxd << QCA955X_ETH_CFG_RXD_DELAY_SHIFT;
+	t |= rxdv << QCA955X_ETH_CFG_RDV_DELAY_SHIFT;
+	t |= txd << QCA955X_ETH_CFG_TXD_DELAY_SHIFT;
+	t |= txe << QCA955X_ETH_CFG_TXE_DELAY_SHIFT;
+
+	__raw_writel(t, base + QCA955X_GMAC_REG_ETH_CFG);
+
+	iounmap(base);
+}
+
 static void __init mr900_setup(void)
 {
 	u8 *art = (u8 *)KSEG1ADDR(0x1fff0000);
@@ -139,7 +161,7 @@ static void __init mr900_setup(void)
 	}
 	pdata->use_eeprom = true;
 
-	ath79_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN, 3, 3, 0, 0);
+	mr900_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN, 3, 3, 0, 0);
 	ath79_register_mdio(0, 0x0);
 
 	mdiobus_register_board_info(mr900_mdio0_info,