gluon/patches/openwrt/0061-ar71xx-Use-private-version-of-ath79_setup_qca955x_eth_cfg-for-MR1750.patch

From: Sven Eckelmann <sven.eckelmann@open-mesh.com>
Date: Wed, 23 Mar 2016 12:52:12 +0000
Subject: ar71xx: Use private version of ath79_setup_qca955x_eth_cfg for MR1750

The MR1750 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 MR1750 can be used instead.

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

Backport of r49070

Forwarded: https://patchwork.ozlabs.org/patch/624188/

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-mr1750.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-mr1750.c
index f9e45bd..e3c04e7 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-mr1750.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-mr1750.c
@@ -108,6 +108,28 @@ static struct mdio_board_info mr1750_mdio0_info[] = {
 	},
 };
 
+static void __init mr1750_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 mr1750_setup(void)
 {
 	u8 *art = (u8 *)KSEG1ADDR(0x1fff0000);
@@ -129,7 +151,7 @@ static void __init mr1750_setup(void)
 	ath79_register_wmac(art + MR1750_WMAC_CALDATA_OFFSET, mac);
 	ath79_register_pci();
 
-	ath79_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN);
+	mr1750_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN, 3, 3, 0, 0);
 	ath79_register_mdio(0, 0x0);
 
 	mdiobus_register_board_info(mr1750_mdio0_info,