diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 120 |
1 files changed, 104 insertions, 16 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c index 7cb794094a706..4ff231df73225 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c @@ -18,6 +18,7 @@ #include <linux/io.h> #include <linux/ioport.h> #include <linux/module.h> +#include <linux/of_device.h> #include <linux/of_net.h> #include <linux/mfd/syscon.h> #include <linux/platform_device.h> @@ -29,6 +30,10 @@ #define PRG_ETH0_RGMII_MODE BIT(0) +#define PRG_ETH0_EXT_PHY_MODE_MASK GENMASK(2, 0) +#define PRG_ETH0_EXT_RGMII_MODE 1 +#define PRG_ETH0_EXT_RMII_MODE 4 + /* mux to choose between fclk_div2 (bit unset) and mpll2 (bit set) */ #define PRG_ETH0_CLK_M250_SEL_SHIFT 4 #define PRG_ETH0_CLK_M250_SEL_MASK GENMASK(4, 4) @@ -47,12 +52,20 @@ #define MUX_CLK_NUM_PARENTS 2 +struct meson8b_dwmac; + +struct meson8b_dwmac_data { + int (*set_phy_mode)(struct meson8b_dwmac *dwmac); +}; + struct meson8b_dwmac { - struct device *dev; - void __iomem *regs; - phy_interface_t phy_mode; - struct clk *rgmii_tx_clk; - u32 tx_delay_ns; + struct device *dev; + void __iomem *regs; + + const struct meson8b_dwmac_data *data; + phy_interface_t phy_mode; + struct clk *rgmii_tx_clk; + u32 tx_delay_ns; }; struct meson8b_dwmac_clk_configs { @@ -171,6 +184,59 @@ static int meson8b_init_rgmii_tx_clk(struct meson8b_dwmac *dwmac) return 0; } +static int meson8b_set_phy_mode(struct meson8b_dwmac *dwmac) +{ + switch (dwmac->phy_mode) { + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_TXID: + /* enable RGMII mode */ + meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, + PRG_ETH0_RGMII_MODE, + PRG_ETH0_RGMII_MODE); + break; + case PHY_INTERFACE_MODE_RMII: + /* disable RGMII mode -> enables RMII mode */ + meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, + PRG_ETH0_RGMII_MODE, 0); + break; + default: + dev_err(dwmac->dev, "fail to set phy-mode %s\n", + phy_modes(dwmac->phy_mode)); + return -EINVAL; + } + + return 0; +} + +static int meson_axg_set_phy_mode(struct meson8b_dwmac *dwmac) +{ + switch (dwmac->phy_mode) { + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_TXID: + /* enable RGMII mode */ + meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, + PRG_ETH0_EXT_PHY_MODE_MASK, + PRG_ETH0_EXT_RGMII_MODE); + break; + case PHY_INTERFACE_MODE_RMII: + /* disable RGMII mode -> enables RMII mode */ + meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, + PRG_ETH0_EXT_PHY_MODE_MASK, + PRG_ETH0_EXT_RMII_MODE); + break; + default: + dev_err(dwmac->dev, "fail to set phy-mode %s\n", + phy_modes(dwmac->phy_mode)); + return -EINVAL; + } + + return 0; +} + static int meson8b_init_prg_eth(struct meson8b_dwmac *dwmac) { int ret; @@ -188,10 +254,6 @@ static int meson8b_init_prg_eth(struct meson8b_dwmac *dwmac) case PHY_INTERFACE_MODE_RGMII_ID: case PHY_INTERFACE_MODE_RGMII_TXID: - /* enable RGMII mode */ - meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, PRG_ETH0_RGMII_MODE, - PRG_ETH0_RGMII_MODE); - /* only relevant for RMII mode -> disable in RGMII mode */ meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, PRG_ETH0_INVERTED_RMII_CLK, 0); @@ -224,10 +286,6 @@ static int meson8b_init_prg_eth(struct meson8b_dwmac *dwmac) break; case PHY_INTERFACE_MODE_RMII: - /* disable RGMII mode -> enables RMII mode */ - meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, PRG_ETH0_RGMII_MODE, - 0); - /* invert internal clk_rmii_i to generate 25/2.5 tx_rx_clk */ meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, PRG_ETH0_INVERTED_RMII_CLK, @@ -274,6 +332,11 @@ static int meson8b_dwmac_probe(struct platform_device *pdev) goto err_remove_config_dt; } + dwmac->data = (const struct meson8b_dwmac_data *) + of_device_get_match_data(&pdev->dev); + if (!dwmac->data) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); dwmac->regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(dwmac->regs)) { @@ -298,6 +361,10 @@ static int meson8b_dwmac_probe(struct platform_device *pdev) if (ret) goto err_remove_config_dt; + ret = dwmac->data->set_phy_mode(dwmac); + if (ret) + goto err_remove_config_dt; + ret = meson8b_init_prg_eth(dwmac); if (ret) goto err_remove_config_dt; @@ -316,10 +383,31 @@ err_remove_config_dt: return ret; } +static const struct meson8b_dwmac_data meson8b_dwmac_data = { + .set_phy_mode = meson8b_set_phy_mode, +}; + +static const struct meson8b_dwmac_data meson_axg_dwmac_data = { + .set_phy_mode = meson_axg_set_phy_mode, +}; + static const struct of_device_id meson8b_dwmac_match[] = { - { .compatible = "amlogic,meson8b-dwmac" }, - { .compatible = "amlogic,meson8m2-dwmac" }, - { .compatible = "amlogic,meson-gxbb-dwmac" }, + { + .compatible = "amlogic,meson8b-dwmac", + .data = &meson8b_dwmac_data, + }, + { + .compatible = "amlogic,meson8m2-dwmac", + .data = &meson8b_dwmac_data, + }, + { + .compatible = "amlogic,meson-gxbb-dwmac", + .data = &meson8b_dwmac_data, + }, + { + .compatible = "amlogic,meson-axg-dwmac", + .data = &meson_axg_dwmac_data, + }, { } }; MODULE_DEVICE_TABLE(of, meson8b_dwmac_match); 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