X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fnet%2Fsun8i_emac.c;h=23c4d68f778849fd8112b5fed221f8a687dbc89c;hb=2f157436335a5507bfeda8097e3f687a31e941ce;hp=4bed50d66808c2c505c0f9d0cff51577952a5602;hpb=1f9ef0dca0a1315f0a216808ade8946bcc54e2b4;p=u-boot diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index 4bed50d668..23c4d68f77 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -1,9 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2016 * Author: Amit Singh Tomar, amittomer25@gmail.com * - * SPDX-License-Identifier: GPL-2.0+ - * * Ethernet driver for H3/A64/A83T based SoC's * * It is derived from the work done by @@ -21,10 +20,10 @@ #include #include #include - -#define SCTL_EMAC_TX_CLK_SRC_MII BIT(0) -#define SCTL_EMAC_EPIT_MII BIT(2) -#define SCTL_EMAC_CLK_SEL BIT(18) /* 25 Mhz */ +#include +#ifdef CONFIG_DM_GPIO +#include +#endif #define MDIO_CMD_MII_BUSY BIT(0) #define MDIO_CMD_MII_WRITE BIT(1) @@ -36,7 +35,14 @@ #define CONFIG_TX_DESCR_NUM 32 #define CONFIG_RX_DESCR_NUM 32 -#define CONFIG_ETH_BUFSIZE 2024 +#define CONFIG_ETH_BUFSIZE 2048 /* Note must be dma aligned */ + +/* + * The datasheet says that each descriptor can transfers up to 4096 bytes + * But later, the register documentation reduces that value to 2048, + * using 2048 cause strange behaviours and even BSP driver use 2047 + */ +#define CONFIG_ETH_RXSIZE 2044 /* Note must fit in ETH_BUFSIZE */ #define TX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM) #define RX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM) @@ -59,7 +65,7 @@ #define AHB_GATE_OFFSET_EPHY 0 -#if defined(CONFIG_MACH_SUN8I_H3) +#if defined(CONFIG_MACH_SUNXI_H3_H5) #define SUN8I_GPD8_GMAC 2 #else #define SUN8I_GPD8_GMAC 4 @@ -125,11 +131,22 @@ struct emac_eth_dev { phys_addr_t sysctl_reg; struct phy_device *phydev; struct mii_dev *bus; +#ifdef CONFIG_DM_GPIO + struct gpio_desc reset_gpio; +#endif +}; + + +struct sun8i_eth_pdata { + struct eth_pdata eth_pdata; + u32 reset_delays[3]; }; + static int sun8i_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) { - struct emac_eth_dev *priv = bus->priv; + struct udevice *dev = bus->priv; + struct emac_eth_dev *priv = dev_get_priv(dev); ulong start; u32 miiaddr = 0; int timeout = CONFIG_MDIO_TIMEOUT; @@ -161,7 +178,8 @@ static int sun8i_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) static int sun8i_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, u16 val) { - struct emac_eth_dev *priv = bus->priv; + struct udevice *dev = bus->priv; + struct emac_eth_dev *priv = dev_get_priv(dev); ulong start; u32 miiaddr = 0; int ret = -1, timeout = CONFIG_MDIO_TIMEOUT; @@ -177,8 +195,8 @@ static int sun8i_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, miiaddr |= MDIO_CMD_MII_WRITE; miiaddr |= MDIO_CMD_MII_BUSY; - writel(miiaddr, priv->mac_reg + EMAC_MII_CMD); writel(val, priv->mac_reg + EMAC_MII_DATA); + writel(miiaddr, priv->mac_reg + EMAC_MII_CMD); start = get_timer(0); while (get_timer(start) < timeout) { @@ -260,7 +278,7 @@ static int sun8i_emac_set_syscon(struct emac_eth_dev *priv) int ret; u32 reg; - reg = readl(priv->sysctl_reg); + reg = readl(priv->sysctl_reg + 0x30); if (priv->variant == H3_EMAC) { ret = sun8i_emac_set_syscon_ephy(priv, ®); @@ -291,7 +309,7 @@ static int sun8i_emac_set_syscon(struct emac_eth_dev *priv) return -EINVAL; } - writel(reg, priv->sysctl_reg); + writel(reg, priv->sysctl_reg + 0x30); return 0; } @@ -328,7 +346,7 @@ static void rx_descs_init(struct emac_eth_dev *priv) desc_p->buf_addr = (uintptr_t)&rxbuffs[idx * CONFIG_ETH_BUFSIZE] ; desc_p->next = (uintptr_t)&desc_table_p[idx + 1]; - desc_p->st |= CONFIG_ETH_BUFSIZE; + desc_p->st |= CONFIG_ETH_RXSIZE; desc_p->status = BIT(31); } @@ -413,7 +431,7 @@ static int _sun8i_emac_eth_init(struct emac_eth_dev *priv, u8 *enetaddr) tx_descs_init(priv); /* PHY Start Up */ - genphy_parse_link(priv->phydev); + phy_startup(priv->phydev); sun8i_adjust_link(priv, priv->phydev); @@ -437,9 +455,9 @@ static int parse_phy_pins(struct udevice *dev) { int offset; const char *pin_name; - int drive, pull, i; + int drive, pull = SUN4I_PINCTRL_NO_PULL, i; - offset = fdtdec_lookup_phandle(gd->fdt_blob, dev->of_offset, + offset = fdtdec_lookup_phandle(gd->fdt_blob, dev_of_offset(dev), "pinctrl-0"); if (offset < 0) { printf("WARNING: emac: cannot find pinctrl-0 node\n"); @@ -447,29 +465,44 @@ static int parse_phy_pins(struct udevice *dev) } drive = fdt_getprop_u32_default_node(gd->fdt_blob, offset, 0, - "allwinner,drive", 4); - pull = fdt_getprop_u32_default_node(gd->fdt_blob, offset, 0, - "allwinner,pull", 0); + "drive-strength", ~0); + if (drive != ~0) { + if (drive <= 10) + drive = SUN4I_PINCTRL_10_MA; + else if (drive <= 20) + drive = SUN4I_PINCTRL_20_MA; + else if (drive <= 30) + drive = SUN4I_PINCTRL_30_MA; + else + drive = SUN4I_PINCTRL_40_MA; + } + + if (fdt_get_property(gd->fdt_blob, offset, "bias-pull-up", NULL)) + pull = SUN4I_PINCTRL_PULL_UP; + else if (fdt_get_property(gd->fdt_blob, offset, "bias-pull-down", NULL)) + pull = SUN4I_PINCTRL_PULL_DOWN; + for (i = 0; ; i++) { int pin; - if (fdt_get_string_index(gd->fdt_blob, offset, - "allwinner,pins", i, &pin_name)) + pin_name = fdt_stringlist_get(gd->fdt_blob, offset, + "pins", i, NULL); + if (!pin_name) break; - if (pin_name[0] != 'P') - continue; - pin = (pin_name[1] - 'A') << 5; - if (pin >= 26 << 5) + + pin = sunxi_name_to_gpio(pin_name); + if (pin < 0) continue; - pin += simple_strtol(&pin_name[2], NULL, 10); sunxi_gpio_set_cfgpin(pin, SUN8I_GPD8_GMAC); - sunxi_gpio_set_drv(pin, drive); - sunxi_gpio_set_pull(pin, pull); + if (drive != ~0) + sunxi_gpio_set_drv(pin, drive); + if (pull != ~0) + sunxi_gpio_set_pull(pin, pull); } if (!i) { - printf("WARNING: emac: cannot find allwinner,pins property\n"); + printf("WARNING: emac: cannot find pins property\n"); return -2; } @@ -510,7 +543,7 @@ static int _sun8i_eth_recv(struct emac_eth_dev *priv, uchar **packetp) roundup(data_end, ARCH_DMA_MINALIGN)); if (good_packet) { - if (length > CONFIG_ETH_BUFSIZE) { + if (length > CONFIG_ETH_RXSIZE) { printf("Received packet is too big (len=%d)\n", length); return -EMSGSIZE; @@ -585,28 +618,59 @@ static void sun8i_emac_board_setup(struct emac_eth_dev *priv) { struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; +#ifdef CONFIG_MACH_SUNXI_H3_H5 + /* Only H3/H5 have clock controls for internal EPHY */ if (priv->use_internal_phy) { /* Set clock gating for ephy */ setbits_le32(&ccm->bus_gate4, BIT(AHB_GATE_OFFSET_EPHY)); - /* Set Tx clock source as MII with rate 25 MZ */ - setbits_le32(priv->sysctl_reg, SCTL_EMAC_TX_CLK_SRC_MII | - SCTL_EMAC_EPIT_MII | SCTL_EMAC_CLK_SEL); /* Deassert EPHY */ setbits_le32(&ccm->ahb_reset2_cfg, BIT(AHB_RESET_OFFSET_EPHY)); } +#endif /* Set clock gating for emac */ setbits_le32(&ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_GMAC)); - /* Set EMAC clock */ - setbits_le32(&ccm->axi_gate, (BIT(1) | BIT(0))); - /* De-assert EMAC */ setbits_le32(&ccm->ahb_reset0_cfg, BIT(AHB_RESET_OFFSET_GMAC)); } -static int sun8i_mdio_init(const char *name, struct emac_eth_dev *priv) +#if defined(CONFIG_DM_GPIO) +static int sun8i_mdio_reset(struct mii_dev *bus) +{ + struct udevice *dev = bus->priv; + struct emac_eth_dev *priv = dev_get_priv(dev); + struct sun8i_eth_pdata *pdata = dev_get_platdata(dev); + int ret; + + if (!dm_gpio_is_valid(&priv->reset_gpio)) + return 0; + + /* reset the phy */ + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) + return ret; + + udelay(pdata->reset_delays[0]); + + ret = dm_gpio_set_value(&priv->reset_gpio, 1); + if (ret) + return ret; + + udelay(pdata->reset_delays[1]); + + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) + return ret; + + udelay(pdata->reset_delays[2]); + + return 0; +} +#endif + +static int sun8i_mdio_init(const char *name, struct udevice *priv) { struct mii_dev *bus = mdio_alloc(); @@ -619,6 +683,9 @@ static int sun8i_mdio_init(const char *name, struct emac_eth_dev *priv) bus->write = sun8i_mdio_write; snprintf(bus->name, sizeof(bus->name), name); bus->priv = (void *)priv; +#if defined(CONFIG_DM_GPIO) + bus->reset = sun8i_mdio_reset; +#endif return mdio_register(bus); } @@ -696,12 +763,11 @@ static int sun8i_emac_eth_probe(struct udevice *dev) priv->mac_reg = (void *)pdata->iobase; sun8i_emac_board_setup(priv); + sun8i_emac_set_syscon(priv); - sun8i_mdio_init(dev->name, priv); + sun8i_mdio_init(dev->name, dev); priv->bus = miiphy_get_dev_by_name(dev->name); - sun8i_emac_set_syscon(priv); - return sun8i_phy_init(priv, dev); } @@ -716,25 +782,54 @@ static const struct eth_ops sun8i_emac_eth_ops = { static int sun8i_emac_eth_ofdata_to_platdata(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); const char *phy_mode; + const fdt32_t *reg; + int node = dev_of_offset(dev); int offset = 0; +#ifdef CONFIG_DM_GPIO + int reset_flags = GPIOD_IS_OUT; + int ret = 0; +#endif - pdata->iobase = dev_get_addr_name(dev, "emac"); - priv->sysctl_reg = dev_get_addr_name(dev, "syscon"); + pdata->iobase = devfdt_get_addr(dev); + if (pdata->iobase == FDT_ADDR_T_NONE) { + debug("%s: Cannot find MAC base address\n", __func__); + return -EINVAL; + } + + 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; priv->phyaddr = -1; priv->use_internal_phy = false; - offset = fdtdec_lookup_phandle(gd->fdt_blob, dev->of_offset, - "phy"); - if (offset > 0) - priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", - -1); + offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "phy-handle"); + if (offset < 0) { + debug("%s: Cannot find PHY address\n", __func__); + return -EINVAL; + } + priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1); - phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL); + phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL); if (phy_mode) pdata->phy_interface = phy_get_interface_by_name(phy_mode); @@ -748,14 +843,16 @@ static int sun8i_emac_eth_ofdata_to_platdata(struct udevice *dev) priv->variant = dev_get_driver_data(dev); if (!priv->variant) { - printf("%s: Missing variant '%s'\n", __func__, - (char *)priv->variant); + printf("%s: Missing variant\n", __func__); return -EINVAL; } if (priv->variant == H3_EMAC) { - if (fdt_getprop(gd->fdt_blob, dev->of_offset, - "allwinner,use-internal-phy", NULL)) + int parent = fdt_parent_offset(gd->fdt_blob, offset); + + if (parent >= 0 && + !fdt_node_check_compatible(gd->fdt_blob, parent, + "allwinner,sun8i-h3-mdio-internal")) priv->use_internal_phy = true; } @@ -764,6 +861,23 @@ static int sun8i_emac_eth_ofdata_to_platdata(struct udevice *dev) if (!priv->use_internal_phy) parse_phy_pins(dev); +#ifdef CONFIG_DM_GPIO + if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev), + "snps,reset-active-low")) + reset_flags |= GPIOD_ACTIVE_LOW; + + ret = gpio_request_by_name(dev, "snps,reset-gpio", 0, + &priv->reset_gpio, reset_flags); + + if (ret == 0) { + ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(dev), + "snps,reset-delays-us", + sun8i_pdata->reset_delays, 3); + } else if (ret == -ENOENT) { + ret = 0; + } +#endif + return 0; } @@ -784,6 +898,6 @@ U_BOOT_DRIVER(eth_sun8i_emac) = { .probe = sun8i_emac_eth_probe, .ops = &sun8i_emac_eth_ops, .priv_auto_alloc_size = sizeof(struct emac_eth_dev), - .platdata_auto_alloc_size = sizeof(struct eth_pdata), + .platdata_auto_alloc_size = sizeof(struct sun8i_eth_pdata), .flags = DM_FLAG_ALLOC_PRIV_DMA, };