X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fsun8i_emac.c;h=98bd7a58232fd0e9416529e67bd835f8949202a0;hb=b4ee6daad7a2604ca9466b2ba48de86cc27d381f;hp=3ba3a1ff8be2df98f3811908e1f8f5f3416aa624;hpb=e46d73fa965b5d9febf251e6dcd3638cca711ae8;p=oweals%2Fu-boot.git diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index 3ba3a1ff8b..98bd7a5823 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -14,12 +14,14 @@ #include #include #include +#include #include #include #include #include #include #include +#include #include #ifdef CONFIG_DM_GPIO #include @@ -60,6 +62,10 @@ #define SC_ETCS_MASK GENMASK(1, 0) #define SC_ETCS_EXT_GMII 0x1 #define SC_ETCS_INT_GMII 0x2 +#define SC_ETXDC_MASK GENMASK(12, 10) +#define SC_ETXDC_OFFSET 10 +#define SC_ERXDC_MASK GENMASK(9, 5) +#define SC_ERXDC_OFFSET 5 #define CONFIG_MDIO_TIMEOUT (3 * CONFIG_SYS_HZ) @@ -131,6 +137,8 @@ struct emac_eth_dev { phys_addr_t sysctl_reg; struct phy_device *phydev; struct mii_dev *bus; + struct clk tx_clk; + struct reset_ctl tx_rst; #ifdef CONFIG_DM_GPIO struct gpio_desc reset_gpio; #endif @@ -140,6 +148,8 @@ struct emac_eth_dev { struct sun8i_eth_pdata { struct eth_pdata eth_pdata; u32 reset_delays[3]; + int tx_delay_ps; + int rx_delay_ps; }; @@ -273,15 +283,24 @@ static int sun8i_emac_set_syscon_ephy(struct emac_eth_dev *priv, u32 *reg) return 0; } -static int sun8i_emac_set_syscon(struct emac_eth_dev *priv) +static int sun8i_emac_set_syscon(struct sun8i_eth_pdata *pdata, + struct emac_eth_dev *priv) { int ret; u32 reg; - reg = readl(priv->sysctl_reg + 0x30); + if (priv->variant == R40_GMAC) { + /* Select RGMII for R40 */ + reg = readl(priv->sysctl_reg + 0x164); + reg |= CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII | + CCM_GMAC_CTRL_GPIT_RGMII | + CCM_GMAC_CTRL_TX_CLK_DELAY(CONFIG_GMAC_TX_DELAY); - if (priv->variant == R40_GMAC) + writel(reg, priv->sysctl_reg + 0x164); return 0; + } + + reg = readl(priv->sysctl_reg + 0x30); if (priv->variant == H3_EMAC) { ret = sun8i_emac_set_syscon_ephy(priv, ®); @@ -312,6 +331,14 @@ static int sun8i_emac_set_syscon(struct emac_eth_dev *priv) return -EINVAL; } + if (pdata->tx_delay_ps) + reg |= ((pdata->tx_delay_ps / 100) << SC_ETXDC_OFFSET) + & SC_ETXDC_MASK; + + if (pdata->rx_delay_ps) + reg |= ((pdata->rx_delay_ps / 100) << SC_ERXDC_OFFSET) + & SC_ERXDC_MASK; + writel(reg, priv->sysctl_reg + 0x30); return 0; @@ -624,9 +651,24 @@ static int sun8i_eth_write_hwaddr(struct udevice *dev) return _sun8i_write_hwaddr(priv, pdata->enetaddr); } -static void sun8i_emac_board_setup(struct emac_eth_dev *priv) +static int sun8i_emac_board_setup(struct emac_eth_dev *priv) { struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + int ret; + + ret = clk_enable(&priv->tx_clk); + if (ret) { + dev_err(dev, "failed to enable TX clock\n"); + return ret; + } + + if (reset_valid(&priv->tx_rst)) { + ret = reset_deassert(&priv->tx_rst); + if (ret) { + dev_err(dev, "failed to deassert TX reset\n"); + goto err_tx_clk; + } + } if (priv->variant == H3_EMAC) { /* Only H3/H5 have clock controls for internal EPHY */ @@ -641,26 +683,11 @@ static void sun8i_emac_board_setup(struct emac_eth_dev *priv) } } - if (priv->variant == R40_GMAC) { - /* Set clock gating for emac */ - setbits_le32(&ccm->ahb_reset1_cfg, BIT(AHB_RESET_OFFSET_GMAC)); - - /* De-assert EMAC */ - setbits_le32(&ccm->ahb_gate1, BIT(AHB_GATE_OFFSET_GMAC)); + return 0; - /* Select RGMII for R40 */ - setbits_le32(&ccm->gmac_clk_cfg, - CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII | - CCM_GMAC_CTRL_GPIT_RGMII); - setbits_le32(&ccm->gmac_clk_cfg, - CCM_GMAC_CTRL_TX_CLK_DELAY(CONFIG_GMAC_TX_DELAY)); - } else { - /* Set clock gating for emac */ - setbits_le32(&ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_GMAC)); - - /* De-assert EMAC */ - setbits_le32(&ccm->ahb_reset0_cfg, BIT(AHB_RESET_OFFSET_GMAC)); - } +err_tx_clk: + clk_disable(&priv->tx_clk); + return ret; } #if defined(CONFIG_DM_GPIO) @@ -784,13 +811,18 @@ static void sun8i_emac_eth_stop(struct udevice *dev) static int sun8i_emac_eth_probe(struct udevice *dev) { - struct eth_pdata *pdata = dev_get_platdata(dev); + struct sun8i_eth_pdata *sun8i_pdata = dev_get_platdata(dev); + struct eth_pdata *pdata = &sun8i_pdata->eth_pdata; struct emac_eth_dev *priv = dev_get_priv(dev); + int ret; priv->mac_reg = (void *)pdata->iobase; - sun8i_emac_board_setup(priv); - sun8i_emac_set_syscon(priv); + ret = sun8i_emac_board_setup(priv); + if (ret) + return ret; + + sun8i_emac_set_syscon(sun8i_pdata, priv); sun8i_mdio_init(dev->name, dev); priv->bus = miiphy_get_dev_by_name(dev->name); @@ -818,8 +850,8 @@ static int sun8i_emac_eth_ofdata_to_platdata(struct udevice *dev) int offset = 0; #ifdef CONFIG_DM_GPIO int reset_flags = GPIOD_IS_OUT; - int ret = 0; #endif + int ret; pdata->iobase = devfdt_get_addr(dev); if (pdata->iobase == FDT_ADDR_T_NONE) { @@ -834,25 +866,35 @@ static int sun8i_emac_eth_ofdata_to_platdata(struct udevice *dev) return -EINVAL; } - if (priv->variant != R40_GMAC) { - offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "syscon"); - if (offset < 0) { - debug("%s: cannot find syscon node\n", __func__); - return -EINVAL; - } - reg = fdt_getprop(gd->fdt_blob, offset, "reg", NULL); - if (!reg) { - debug("%s: cannot find reg property in syscon node\n", - __func__); - return -EINVAL; - } - priv->sysctl_reg = fdt_translate_address((void *)gd->fdt_blob, - offset, reg); - if (priv->sysctl_reg == FDT_ADDR_T_NONE) { - debug("%s: Cannot find syscon base address\n", - __func__); - return -EINVAL; - } + ret = clk_get_by_name(dev, "stmmaceth", &priv->tx_clk); + if (ret) { + dev_err(dev, "failed to get TX clock\n"); + return ret; + } + + ret = reset_get_by_name(dev, "stmmaceth", &priv->tx_rst); + if (ret && ret != -ENOENT) { + dev_err(dev, "failed to get TX reset\n"); + return ret; + } + + offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "syscon"); + if (offset < 0) { + debug("%s: cannot find syscon node\n", __func__); + return -EINVAL; + } + + reg = fdt_getprop(gd->fdt_blob, offset, "reg", NULL); + if (!reg) { + debug("%s: cannot find reg property in syscon node\n", + __func__); + return -EINVAL; + } + priv->sysctl_reg = fdt_translate_address((void *)gd->fdt_blob, + offset, reg); + if (priv->sysctl_reg == FDT_ADDR_T_NONE) { + debug("%s: Cannot find syscon base address\n", __func__); + return -EINVAL; } pdata->phy_interface = -1; @@ -891,6 +933,18 @@ static int sun8i_emac_eth_ofdata_to_platdata(struct udevice *dev) if (!priv->use_internal_phy) parse_phy_pins(dev); + sun8i_pdata->tx_delay_ps = fdtdec_get_int(gd->fdt_blob, node, + "allwinner,tx-delay-ps", 0); + if (sun8i_pdata->tx_delay_ps < 0 || sun8i_pdata->tx_delay_ps > 700) + printf("%s: Invalid TX delay value %d\n", __func__, + sun8i_pdata->tx_delay_ps); + + sun8i_pdata->rx_delay_ps = fdtdec_get_int(gd->fdt_blob, node, + "allwinner,rx-delay-ps", 0); + if (sun8i_pdata->rx_delay_ps < 0 || sun8i_pdata->rx_delay_ps > 3100) + printf("%s: Invalid RX delay value %d\n", __func__, + sun8i_pdata->rx_delay_ps); + #ifdef CONFIG_DM_GPIO if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev), "snps,reset-active-low"))