This patch adds support for USXGMII of SoC.
Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- drivers/net/mtk_eth.c | 230 +++++++++++++++++++++++++++++++++++++++++- drivers/net/mtk_eth.h | 24 +++++ 2 files changed, 251 insertions(+), 3 deletions(-)
diff --git a/drivers/net/mtk_eth.c b/drivers/net/mtk_eth.c index 064b4a41db..c99ab5dbea 100644 --- a/drivers/net/mtk_eth.c +++ b/drivers/net/mtk_eth.c @@ -105,6 +105,11 @@ struct mtk_eth_priv {
struct regmap *infra_regmap;
+ struct regmap *usxgmii_regmap; + struct regmap *xfi_pextp_regmap; + struct regmap *xfi_pll_regmap; + struct regmap *toprgu_regmap; + struct mii_dev *mdio_bus; int (*mii_read)(struct mtk_eth_priv *priv, u8 phy, u8 reg); int (*mii_write)(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 val); @@ -989,6 +994,42 @@ static int mt753x_switch_init(struct mtk_eth_priv *priv) return 0; }
+static void mtk_xphy_link_adjust(struct mtk_eth_priv *priv) +{ + u16 lcl_adv = 0, rmt_adv = 0; + u8 flowctrl; + u32 mcr; + + mcr = mtk_gmac_read(priv, XGMAC_PORT_MCR(priv->gmac_id)); + mcr &= ~(XGMAC_FORCE_TX_FC | XGMAC_FORCE_RX_FC); + + if (priv->phydev->duplex) { + if (priv->phydev->pause) + rmt_adv = LPA_PAUSE_CAP; + if (priv->phydev->asym_pause) + rmt_adv |= LPA_PAUSE_ASYM; + + if (priv->phydev->advertising & ADVERTISED_Pause) + lcl_adv |= ADVERTISE_PAUSE_CAP; + if (priv->phydev->advertising & ADVERTISED_Asym_Pause) + lcl_adv |= ADVERTISE_PAUSE_ASYM; + + flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); + + if (flowctrl & FLOW_CTRL_TX) + mcr |= XGMAC_FORCE_TX_FC; + if (flowctrl & FLOW_CTRL_RX) + mcr |= XGMAC_FORCE_RX_FC; + + debug("rx pause %s, tx pause %s\n", + flowctrl & FLOW_CTRL_RX ? "enabled" : "disabled", + flowctrl & FLOW_CTRL_TX ? "enabled" : "disabled"); + } + + mcr &= ~(XGMAC_TRX_DISABLE); + mtk_gmac_write(priv, XGMAC_PORT_MCR(priv->gmac_id), mcr); +} + static void mtk_phy_link_adjust(struct mtk_eth_priv *priv) { u16 lcl_adv = 0, rmt_adv = 0; @@ -1063,8 +1104,12 @@ static int mtk_phy_start(struct mtk_eth_priv *priv) return 0; }
- if (!priv->force_mode) - mtk_phy_link_adjust(priv); + if (!priv->force_mode) { + if (priv->phy_interface == PHY_INTERFACE_MODE_USXGMII) + mtk_xphy_link_adjust(priv); + else + mtk_phy_link_adjust(priv); + }
debug("Speed: %d, %s duplex%s\n", phydev->speed, (phydev->duplex) ? "full" : "half", @@ -1140,6 +1185,112 @@ static void mtk_sgmii_force_init(struct mtk_eth_priv *priv) SGMII_PHYA_PWD, 0); }
+static void mtk_xfi_pll_enable(struct mtk_eth_priv *priv) +{ + u32 val = 0; + + /* Add software workaround for USXGMII PLL TCL issue */ + regmap_write(priv->xfi_pll_regmap, XFI_PLL_ANA_GLB8, + RG_XFI_PLL_ANA_SWWA); + + regmap_read(priv->xfi_pll_regmap, XFI_PLL_DIG_GLB8, &val); + val |= RG_XFI_PLL_EN; + regmap_write(priv->xfi_pll_regmap, XFI_PLL_DIG_GLB8, val); +} + +static void mtk_usxgmii_reset(struct mtk_eth_priv *priv) +{ + switch (priv->gmac_id) { + case 1: + regmap_write(priv->toprgu_regmap, 0xFC, 0x0000A004); + regmap_write(priv->toprgu_regmap, 0x18, 0x88F0A004); + regmap_write(priv->toprgu_regmap, 0xFC, 0x00000000); + regmap_write(priv->toprgu_regmap, 0x18, 0x88F00000); + regmap_write(priv->toprgu_regmap, 0x18, 0x00F00000); + break; + case 2: + regmap_write(priv->toprgu_regmap, 0xFC, 0x00005002); + regmap_write(priv->toprgu_regmap, 0x18, 0x88F05002); + regmap_write(priv->toprgu_regmap, 0xFC, 0x00000000); + regmap_write(priv->toprgu_regmap, 0x18, 0x88F00000); + regmap_write(priv->toprgu_regmap, 0x18, 0x00F00000); + break; + } + + mdelay(10); +} + +static void mtk_usxgmii_setup_phya_an_10000(struct mtk_eth_priv *priv) +{ + regmap_write(priv->usxgmii_regmap, 0x810, 0x000FFE6D); + regmap_write(priv->usxgmii_regmap, 0x818, 0x07B1EC7B); + regmap_write(priv->usxgmii_regmap, 0x80C, 0x30000000); + ndelay(1020); + regmap_write(priv->usxgmii_regmap, 0x80C, 0x10000000); + ndelay(1020); + regmap_write(priv->usxgmii_regmap, 0x80C, 0x00000000); + + regmap_write(priv->xfi_pextp_regmap, 0x9024, 0x00C9071C); + regmap_write(priv->xfi_pextp_regmap, 0x2020, 0xAA8585AA); + regmap_write(priv->xfi_pextp_regmap, 0x2030, 0x0C020707); + regmap_write(priv->xfi_pextp_regmap, 0x2034, 0x0E050F0F); + regmap_write(priv->xfi_pextp_regmap, 0x2040, 0x00140032); + regmap_write(priv->xfi_pextp_regmap, 0x50F0, 0x00C014AA); + regmap_write(priv->xfi_pextp_regmap, 0x50E0, 0x3777C12B); + regmap_write(priv->xfi_pextp_regmap, 0x506C, 0x005F9CFF); + regmap_write(priv->xfi_pextp_regmap, 0x5070, 0x9D9DFAFA); + regmap_write(priv->xfi_pextp_regmap, 0x5074, 0x27273F3F); + regmap_write(priv->xfi_pextp_regmap, 0x5078, 0xA7883C68); + regmap_write(priv->xfi_pextp_regmap, 0x507C, 0x11661166); + regmap_write(priv->xfi_pextp_regmap, 0x5080, 0x0E000AAF); + regmap_write(priv->xfi_pextp_regmap, 0x5084, 0x08080D0D); + regmap_write(priv->xfi_pextp_regmap, 0x5088, 0x02030909); + regmap_write(priv->xfi_pextp_regmap, 0x50E4, 0x0C0C0000); + regmap_write(priv->xfi_pextp_regmap, 0x50E8, 0x04040000); + regmap_write(priv->xfi_pextp_regmap, 0x50EC, 0x0F0F0C06); + regmap_write(priv->xfi_pextp_regmap, 0x50A8, 0x506E8C8C); + regmap_write(priv->xfi_pextp_regmap, 0x6004, 0x18190000); + regmap_write(priv->xfi_pextp_regmap, 0x00F8, 0x01423342); + regmap_write(priv->xfi_pextp_regmap, 0x00F4, 0x80201F20); + regmap_write(priv->xfi_pextp_regmap, 0x0030, 0x00050C00); + regmap_write(priv->xfi_pextp_regmap, 0x0070, 0x02002800); + ndelay(1020); + regmap_write(priv->xfi_pextp_regmap, 0x30B0, 0x00000020); + regmap_write(priv->xfi_pextp_regmap, 0x3028, 0x00008A01); + regmap_write(priv->xfi_pextp_regmap, 0x302C, 0x0000A884); + regmap_write(priv->xfi_pextp_regmap, 0x3024, 0x00083002); + regmap_write(priv->xfi_pextp_regmap, 0x3010, 0x00022220); + regmap_write(priv->xfi_pextp_regmap, 0x5064, 0x0F020A01); + regmap_write(priv->xfi_pextp_regmap, 0x50B4, 0x06100600); + regmap_write(priv->xfi_pextp_regmap, 0x3048, 0x40704000); + regmap_write(priv->xfi_pextp_regmap, 0x3050, 0xA8000000); + regmap_write(priv->xfi_pextp_regmap, 0x3054, 0x000000AA); + regmap_write(priv->xfi_pextp_regmap, 0x306C, 0x00000F00); + regmap_write(priv->xfi_pextp_regmap, 0xA060, 0x00040000); + regmap_write(priv->xfi_pextp_regmap, 0x90D0, 0x00000001); + regmap_write(priv->xfi_pextp_regmap, 0x0070, 0x0200E800); + udelay(150); + regmap_write(priv->xfi_pextp_regmap, 0x0070, 0x0200C111); + ndelay(1020); + regmap_write(priv->xfi_pextp_regmap, 0x0070, 0x0200C101); + udelay(15); + regmap_write(priv->xfi_pextp_regmap, 0x0070, 0x0202C111); + ndelay(1020); + regmap_write(priv->xfi_pextp_regmap, 0x0070, 0x0202C101); + udelay(100); + regmap_write(priv->xfi_pextp_regmap, 0x30B0, 0x00000030); + regmap_write(priv->xfi_pextp_regmap, 0x00F4, 0x80201F00); + regmap_write(priv->xfi_pextp_regmap, 0x3040, 0x30000000); + udelay(400); +} + +static void mtk_usxgmii_an_init(struct mtk_eth_priv *priv) +{ + mtk_xfi_pll_enable(priv); + mtk_usxgmii_reset(priv); + mtk_usxgmii_setup_phya_an_10000(priv); +} + static void mtk_mac_init(struct mtk_eth_priv *priv) { int i, ge_mode = 0; @@ -1222,6 +1373,36 @@ static void mtk_mac_init(struct mtk_eth_priv *priv) } }
+static void mtk_xmac_init(struct mtk_eth_priv *priv) +{ + u32 sts; + + switch (priv->phy_interface) { + case PHY_INTERFACE_MODE_USXGMII: + mtk_usxgmii_an_init(priv); + break; + default: + break; + } + + /* Set GMAC to the correct mode */ + mtk_ethsys_rmw(priv, ETHSYS_SYSCFG0_REG, + SYSCFG0_GE_MODE_M << SYSCFG0_GE_MODE_S(priv->gmac_id), + 0); + + if (priv->gmac_id == 1) { + mtk_infra_rmw(priv, TOPMISC_NETSYS_PCS_MUX, + NETSYS_PCS_MUX_MASK, MUX_G2_USXGMII_SEL); + } else if (priv->gmac_id == 2) { + sts = mtk_gmac_read(priv, XGMAC_STS(priv->gmac_id)); + sts |= XGMAC_FORCE_LINK; + mtk_gmac_write(priv, XGMAC_STS(priv->gmac_id), sts); + } + + /* Force GMAC link down */ + mtk_gmac_write(priv, GMAC_PORT_MCR(priv->gmac_id), FORCE_MODE); +} + static void mtk_eth_fifo_init(struct mtk_eth_priv *priv) { char *pkt_base = priv->pkt_pool; @@ -1463,7 +1644,10 @@ static int mtk_eth_probe(struct udevice *dev) ARCH_DMA_MINALIGN);
/* Set MAC mode */ - mtk_mac_init(priv); + if (priv->phy_interface == PHY_INTERFACE_MODE_USXGMII) + mtk_xmac_init(priv); + else + mtk_mac_init(priv);
/* Probe phy if switch is not specified */ if (priv->sw == SW_NONE) @@ -1581,6 +1765,46 @@ static int mtk_eth_of_to_plat(struct udevice *dev) }
priv->pn_swap = ofnode_read_bool(args.node, "pn_swap"); + } else if (priv->phy_interface == PHY_INTERFACE_MODE_USXGMII) { + /* get corresponding usxgmii phandle */ + ret = dev_read_phandle_with_args(dev, "mediatek,usxgmiisys", + NULL, 0, 0, &args); + if (ret) + return ret; + + priv->usxgmii_regmap = syscon_node_to_regmap(args.node); + if (IS_ERR(priv->usxgmii_regmap)) + return PTR_ERR(priv->usxgmii_regmap); + + /* get corresponding xfi_pextp phandle */ + ret = dev_read_phandle_with_args(dev, "mediatek,xfi_pextp", + NULL, 0, 0, &args); + if (ret) + return ret; + + priv->xfi_pextp_regmap = syscon_node_to_regmap(args.node); + if (IS_ERR(priv->xfi_pextp_regmap)) + return PTR_ERR(priv->xfi_pextp_regmap); + + /* get corresponding xfi_pll phandle */ + ret = dev_read_phandle_with_args(dev, "mediatek,xfi_pll", + NULL, 0, 0, &args); + if (ret) + return ret; + + priv->xfi_pll_regmap = syscon_node_to_regmap(args.node); + if (IS_ERR(priv->xfi_pll_regmap)) + return PTR_ERR(priv->xfi_pll_regmap); + + /* get corresponding toprgu phandle */ + ret = dev_read_phandle_with_args(dev, "mediatek,toprgu", + NULL, 0, 0, &args); + if (ret) + return ret; + + priv->toprgu_regmap = syscon_node_to_regmap(args.node); + if (IS_ERR(priv->toprgu_regmap)) + return PTR_ERR(priv->toprgu_regmap); }
/* check for switch first, otherwise phy will be used */ diff --git a/drivers/net/mtk_eth.h b/drivers/net/mtk_eth.h index 519986c01e..4c2a7a8b40 100644 --- a/drivers/net/mtk_eth.h +++ b/drivers/net/mtk_eth.h @@ -68,6 +68,11 @@ enum mkt_eth_capabilities { #define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11)
/* Top misc registers */ +#define TOPMISC_NETSYS_PCS_MUX 0x84 +#define NETSYS_PCS_MUX_MASK GENMASK(1, 0) +#define MUX_G2_USXGMII_SEL BIT(1) +#define MUX_HSGMII1_G1_SEL BIT(0) + #define USB_PHY_SWITCH_REG 0x218 #define QPHY_SEL_MASK 0x3 #define SGMII_QPHY_SEL 0x2 @@ -98,6 +103,15 @@ enum mkt_eth_capabilities { #define SGMSYS_GEN2_SPEED_V2 0x128 #define SGMSYS_SPEED_2500 BIT(2)
+/* USXGMII subsystem config registers */ +/* Register to control USXGMII XFI PLL digital */ +#define XFI_PLL_DIG_GLB8 0x08 +#define RG_XFI_PLL_EN BIT(31) + +/* Register to control USXGMII XFI PLL analog */ +#define XFI_PLL_ANA_GLB8 0x108 +#define RG_XFI_PLL_ANA_SWWA 0x02283248 + /* Frame Engine Registers */ #define FE_GLO_MISC_REG 0x124 #define PDMA_VER_V2 BIT(4) @@ -221,6 +235,16 @@ enum mkt_eth_capabilities { #define TD_DM_DRVP_S 0 #define TD_DM_DRVP_M 0x0f
+/* XGMAC Status Registers */ +#define XGMAC_STS(x) (((x) == 2) ? 0x001C : 0x000C) +#define XGMAC_FORCE_LINK BIT(15) + +/* XGMAC Registers */ +#define XGMAC_PORT_MCR(x) (0x2000 + (((x) - 1) * 0x1000)) +#define XGMAC_TRX_DISABLE 0xf +#define XGMAC_FORCE_TX_FC BIT(5) +#define XGMAC_FORCE_RX_FC BIT(4) + /* MT7530 Registers */
#define PCR_REG(p) (0x2004 + (p) * 0x100)