ar71xx: add a helper function to set RXDV/RXD of ETH_CFG on AR934x

[openwrt.git] / target / linux / ar71xx / files / arch / mips / ath79 / dev-eth.c

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
index c6842aa..ae3db4c 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
@@ -769,6 +769,32 @@ void __init ath79_setup_ar934x_eth_cfg(u32 mask)
        iounmap(base);
 }
 
+void __init ath79_setup_ar934x_eth_rx_delay(unsigned int rxd,
+                                           unsigned int rxdv)
+{
+       void __iomem *base;
+       u32 t;
+
+       rxd &= AR934X_ETH_CFG_RXD_DELAY_MASK;
+       rxdv &= AR934X_ETH_CFG_RDV_DELAY_MASK;
+
+       base = ioremap(AR934X_GMAC_BASE, AR934X_GMAC_SIZE);
+
+       t = __raw_readl(base + AR934X_GMAC_REG_ETH_CFG);
+
+       t &= ~(AR934X_ETH_CFG_RXD_DELAY_MASK << AR934X_ETH_CFG_RXD_DELAY_SHIFT |
+              AR934X_ETH_CFG_RDV_DELAY_MASK << AR934X_ETH_CFG_RDV_DELAY_SHIFT);
+
+       t |= (rxd << AR934X_ETH_CFG_RXD_DELAY_SHIFT |
+             rxdv << AR934X_ETH_CFG_RDV_DELAY_SHIFT);
+
+       __raw_writel(t, base + AR934X_GMAC_REG_ETH_CFG);
+       /* flush write */
+       __raw_readl(base + AR934X_GMAC_REG_ETH_CFG);
+
+       iounmap(base);
+}
+
 void __init ath79_setup_qca955x_eth_cfg(u32 mask)
 {
        void __iomem *base;