+// 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
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <common.h>
+#include <clk.h>
#include <dm.h>
#include <fdt_support.h>
#include <linux/err.h>
#include <malloc.h>
#include <miiphy.h>
#include <net.h>
+#include <reset.h>
#include <dt-bindings/pinctrl/sun4i-a10.h>
#ifdef CONFIG_DM_GPIO
#include <asm-generic/gpio.h>
#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)
#define AHB_GATE_OFFSET_EPHY 0
-#if defined(CONFIG_MACH_SUNXI_H3_H5)
-#define SUN8I_GPD8_GMAC 2
-#else
-#define SUN8I_GPD8_GMAC 4
-#endif
+/* IO mux settings */
+#define SUN8I_IOMUX_H3 2
+#define SUN8I_IOMUX_R40 5
+#define SUN8I_IOMUX 4
/* H3/A64 EMAC Register's offset */
#define EMAC_CTL0 0x00
A83T_EMAC = 1,
H3_EMAC,
A64_EMAC,
+ R40_GMAC,
};
struct emac_dma_desc {
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
struct sun8i_eth_pdata {
struct eth_pdata eth_pdata;
u32 reset_delays[3];
+ int tx_delay_ps;
+ int rx_delay_ps;
};
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;
+ 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);
+
+ writel(reg, priv->sysctl_reg + 0x164);
+ return 0;
+ }
+
reg = readl(priv->sysctl_reg + 0x30);
if (priv->variant == H3_EMAC) {
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;
static int parse_phy_pins(struct udevice *dev)
{
+ struct emac_eth_dev *priv = dev_get_priv(dev);
int offset;
const char *pin_name;
int drive, pull = SUN4I_PINCTRL_NO_PULL, i;
if (pin < 0)
continue;
- sunxi_gpio_set_cfgpin(pin, SUN8I_GPD8_GMAC);
+ if (priv->variant == H3_EMAC)
+ sunxi_gpio_set_cfgpin(pin, SUN8I_IOMUX_H3);
+ else if (priv->variant == R40_GMAC)
+ sunxi_gpio_set_cfgpin(pin, SUN8I_IOMUX_R40);
+ else
+ sunxi_gpio_set_cfgpin(pin, SUN8I_IOMUX);
+
if (drive != ~0)
sunxi_gpio_set_drv(pin, drive);
if (pull != ~0)
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;
-#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));
+ ret = clk_enable(&priv->tx_clk);
+ if (ret) {
+ dev_err(dev, "failed to enable TX clock\n");
+ return ret;
+ }
- /* Deassert EPHY */
- setbits_le32(&ccm->ahb_reset2_cfg, BIT(AHB_RESET_OFFSET_EPHY));
+ 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;
+ }
}
-#endif
- /* Set clock gating for emac */
- setbits_le32(&ccm->ahb_gate0, BIT(AHB_GATE_OFFSET_GMAC));
+ if (priv->variant == H3_EMAC) {
+ /* 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));
+
+ /* Deassert EPHY */
+ setbits_le32(&ccm->ahb_reset2_cfg,
+ BIT(AHB_RESET_OFFSET_EPHY));
+ }
+ }
- /* De-assert EMAC */
- setbits_le32(&ccm->ahb_reset0_cfg, BIT(AHB_RESET_OFFSET_GMAC));
+ return 0;
+
+err_tx_clk:
+ clk_disable(&priv->tx_clk);
+ return ret;
}
#if defined(CONFIG_DM_GPIO)
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);
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) {
return -EINVAL;
}
+ priv->variant = dev_get_driver_data(dev);
+
+ if (!priv->variant) {
+ printf("%s: Missing variant\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",
return -EINVAL;
}
- priv->variant = dev_get_driver_data(dev);
-
- if (!priv->variant) {
- printf("%s: Missing variant '%s'\n", __func__,
- (char *)priv->variant);
- return -EINVAL;
- }
-
if (priv->variant == H3_EMAC) {
int parent = fdt_parent_offset(gd->fdt_blob, offset);
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"))
.data = (uintptr_t)A64_EMAC },
{.compatible = "allwinner,sun8i-a83t-emac",
.data = (uintptr_t)A83T_EMAC },
+ {.compatible = "allwinner,sun8i-r40-gmac",
+ .data = (uintptr_t)R40_GMAC },
{ }
};
projects / oweals / u-boot.git / blobdiff