+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+
+#include "mt753x.h"
+#include "mt753x_regs.h"
+
+/* MT7530 registers */
+
+/* Unique fields of PMCR for MT7530 */
+#define FORCE_MODE BIT(15)
+
+/* Unique fields of GMACCR for MT7530 */
+#define VLAN_SUPT_NO_S 14
+#define VLAN_SUPT_NO_M 0x1c000
+#define LATE_COL_DROP BIT(13)
+
+/* Unique fields of (M)HWSTRAP for MT7530 */
+#define BOND_OPTION BIT(24)
+#define P5_PHY0_SEL BIT(20)
+#define CHG_TRAP BIT(16)
+#define LOOPDET_DIS BIT(14)
+#define P5_INTF_SEL_GMAC5 BIT(13)
+#define SMI_ADDR_S 11
+#define SMI_ADDR_M 0x1800
+#define XTAL_FSEL_S 9
+#define XTAL_FSEL_M 0x600
+#define P6_INTF_DIS BIT(8)
+#define P5_INTF_MODE_RGMII BIT(7)
+#define P5_INTF_DIS_S BIT(6)
+#define C_MDIO_BPS_S BIT(5)
+#define EEPROM_EN_S BIT(4)
+
+/* PHY EEE Register bitmap of define */
+#define PHY_DEV07 0x07
+#define PHY_DEV07_REG_03C 0x3c
+
+/* PHY Extend Register 0x14 bitmap of define */
+#define PHY_EXT_REG_14 0x14
+
+/* Fields of PHY_EXT_REG_14 */
+#define PHY_EN_DOWN_SHFIT BIT(4)
+
+/* PHY Token Ring Register 0x10 bitmap of define */
+#define PHY_TR_REG_10 0x10
+
+/* PHY Token Ring Register 0x12 bitmap of define */
+#define PHY_TR_REG_12 0x12
+
+/* PHY LPI PCS/DSP Control Register bitmap of define */
+#define PHY_LPI_REG_11 0x11
+
+/* PHY DEV 0x1e Register bitmap of define */
+#define PHY_DEV1E 0x1e
+#define PHY_DEV1E_REG_123 0x123
+#define PHY_DEV1E_REG_A6 0xa6
+
+/* Values of XTAL_FSEL */
+#define XTAL_20MHZ 1
+#define XTAL_40MHZ 2
+#define XTAL_25MHZ 3
+
+#define P6ECR 0x7830
+#define P6_INTF_MODE_TRGMII BIT(0)
+
+#define TRGMII_TXCTRL 0x7a40
+#define TRAIN_TXEN BIT(31)
+#define TXC_INV BIT(30)
+#define TX_DOEO BIT(29)
+#define TX_RST BIT(28)
+
+#define TRGMII_TD0_CTRL 0x7a50
+#define TRGMII_TD1_CTRL 0x7a58
+#define TRGMII_TD2_CTRL 0x7a60
+#define TRGMII_TD3_CTRL 0x7a68
+#define TRGMII_TXCTL_CTRL 0x7a70
+#define TRGMII_TCK_CTRL 0x7a78
+#define TRGMII_TD_CTRL(n) (0x7a50 + (n) * 8)
+#define NUM_TRGMII_CTRL 6
+#define TX_DMPEDRV BIT(31)
+#define TX_DM_SR BIT(15)
+#define TX_DMERODT BIT(14)
+#define TX_DMOECTL BIT(13)
+#define TX_TAP_S 8
+#define TX_TAP_M 0xf00
+#define TX_TRAIN_WD_S 0
+#define TX_TRAIN_WD_M 0xff
+
+#define TRGMII_TD0_ODT 0x7a54
+#define TRGMII_TD1_ODT 0x7a5c
+#define TRGMII_TD2_ODT 0x7a64
+#define TRGMII_TD3_ODT 0x7a6c
+#define TRGMII_TXCTL_ODT 0x7574
+#define TRGMII_TCK_ODT 0x757c
+#define TRGMII_TD_ODT(n) (0x7a54 + (n) * 8)
+#define NUM_TRGMII_ODT 6
+#define TX_DM_DRVN_PRE_S 30
+#define TX_DM_DRVN_PRE_M 0xc0000000
+#define TX_DM_DRVP_PRE_S 28
+#define TX_DM_DRVP_PRE_M 0x30000000
+#define TX_DM_TDSEL_S 24
+#define TX_DM_TDSEL_M 0xf000000
+#define TX_ODTEN BIT(23)
+#define TX_DME_PRE BIT(20)
+#define TX_DM_DRVNT0 BIT(19)
+#define TX_DM_DRVPT0 BIT(18)
+#define TX_DM_DRVNTE BIT(17)
+#define TX_DM_DRVPTE BIT(16)
+#define TX_DM_ODTN_S 12
+#define TX_DM_ODTN_M 0x7000
+#define TX_DM_ODTP_S 8
+#define TX_DM_ODTP_M 0x700
+#define TX_DM_DRVN_S 4
+#define TX_DM_DRVN_M 0xf0
+#define TX_DM_DRVP_S 0
+#define TX_DM_DRVP_M 0x0f
+
+#define P5RGMIIRXCR 0x7b00
+#define CSR_RGMII_RCTL_CFG_S 24
+#define CSR_RGMII_RCTL_CFG_M 0x7000000
+#define CSR_RGMII_RXD_CFG_S 16
+#define CSR_RGMII_RXD_CFG_M 0x70000
+#define CSR_RGMII_EDGE_ALIGN BIT(8)
+#define CSR_RGMII_RXC_90DEG_CFG_S 4
+#define CSR_RGMII_RXC_90DEG_CFG_M 0xf0
+#define CSR_RGMII_RXC_0DEG_CFG_S 0
+#define CSR_RGMII_RXC_0DEG_CFG_M 0x0f
+
+#define P5RGMIITXCR 0x7b04
+#define CSR_RGMII_TXEN_CFG_S 16
+#define CSR_RGMII_TXEN_CFG_M 0x70000
+#define CSR_RGMII_TXD_CFG_S 8
+#define CSR_RGMII_TXD_CFG_M 0x700
+#define CSR_RGMII_TXC_CFG_S 0
+#define CSR_RGMII_TXC_CFG_M 0x1f
+
+#define CHIP_REV 0x7ffc
+#define CHIP_NAME_S 16
+#define CHIP_NAME_M 0xffff0000
+#define CHIP_REV_S 0
+#define CHIP_REV_M 0x0f
+
+/* MMD registers */
+#define CORE_PLL_GROUP2 0x401
+#define RG_SYSPLL_EN_NORMAL BIT(15)
+#define RG_SYSPLL_VODEN BIT(14)
+#define RG_SYSPLL_POSDIV_S 5
+#define RG_SYSPLL_POSDIV_M 0x60
+
+#define CORE_PLL_GROUP4 0x403
+#define RG_SYSPLL_DDSFBK_EN BIT(12)
+#define RG_SYSPLL_BIAS_EN BIT(11)
+#define RG_SYSPLL_BIAS_LPF_EN BIT(10)
+
+#define CORE_PLL_GROUP5 0x404
+#define RG_LCDDS_PCW_NCPO1_S 0
+#define RG_LCDDS_PCW_NCPO1_M 0xffff
+
+#define CORE_PLL_GROUP6 0x405
+#define RG_LCDDS_PCW_NCPO0_S 0
+#define RG_LCDDS_PCW_NCPO0_M 0xffff
+
+#define CORE_PLL_GROUP7 0x406
+#define RG_LCDDS_PWDB BIT(15)
+#define RG_LCDDS_ISO_EN BIT(13)
+#define RG_LCCDS_C_S 4
+#define RG_LCCDS_C_M 0x70
+#define RG_LCDDS_PCW_NCPO_CHG BIT(3)
+
+#define CORE_PLL_GROUP10 0x409
+#define RG_LCDDS_SSC_DELTA_S 0
+#define RG_LCDDS_SSC_DELTA_M 0xfff
+
+#define CORE_PLL_GROUP11 0x40a
+#define RG_LCDDS_SSC_DELTA1_S 0
+#define RG_LCDDS_SSC_DELTA1_M 0xfff
+
+#define CORE_GSWPLL_GCR_1 0x040d
+#define GSWPLL_PREDIV_S 14
+#define GSWPLL_PREDIV_M 0xc000
+#define GSWPLL_POSTDIV_200M_S 12
+#define GSWPLL_POSTDIV_200M_M 0x3000
+#define GSWPLL_EN_PRE BIT(11)
+#define GSWPLL_FBKSEL BIT(10)
+#define GSWPLL_BP BIT(9)
+#define GSWPLL_BR BIT(8)
+#define GSWPLL_FBKDIV_200M_S 0
+#define GSWPLL_FBKDIV_200M_M 0xff
+
+#define CORE_GSWPLL_GCR_2 0x040e
+#define GSWPLL_POSTDIV_500M_S 8
+#define GSWPLL_POSTDIV_500M_M 0x300
+#define GSWPLL_FBKDIV_500M_S 0
+#define GSWPLL_FBKDIV_500M_M 0xff
+
+#define TRGMII_GSW_CLK_CG 0x0410
+#define TRGMIICK_EN BIT(1)
+#define GSWCK_EN BIT(0)
+
+static int mt7530_mii_read(struct gsw_mt753x *gsw, int phy, int reg)
+{
+ if (phy < MT753X_NUM_PHYS)
+ phy = (gsw->phy_base + phy) & MT753X_SMI_ADDR_MASK;
+
+ return mdiobus_read(gsw->host_bus, phy, reg);
+}
+
+static void mt7530_mii_write(struct gsw_mt753x *gsw, int phy, int reg, u16 val)
+{
+ if (phy < MT753X_NUM_PHYS)
+ phy = (gsw->phy_base + phy) & MT753X_SMI_ADDR_MASK;
+
+ mdiobus_write(gsw->host_bus, phy, reg, val);
+}
+
+static int mt7530_mmd_read(struct gsw_mt753x *gsw, int addr, int devad, u16 reg)
+{
+ u16 val;
+
+ if (addr < MT753X_NUM_PHYS)
+ addr = (gsw->phy_base + addr) & MT753X_SMI_ADDR_MASK;
+
+ mutex_lock(&gsw->host_bus->mdio_lock);
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ACC_CTL_REG,
+ (MMD_ADDR << MMD_CMD_S) |
+ ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ADDR_DATA_REG, reg);
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ACC_CTL_REG,
+ (MMD_DATA << MMD_CMD_S) |
+ ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
+
+ val = gsw->host_bus->read(gsw->host_bus, addr, MII_MMD_ADDR_DATA_REG);
+
+ mutex_unlock(&gsw->host_bus->mdio_lock);
+
+ return val;
+}
+
+static void mt7530_mmd_write(struct gsw_mt753x *gsw, int addr, int devad,
+ u16 reg, u16 val)
+{
+ if (addr < MT753X_NUM_PHYS)
+ addr = (gsw->phy_base + addr) & MT753X_SMI_ADDR_MASK;
+
+ mutex_lock(&gsw->host_bus->mdio_lock);
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ACC_CTL_REG,
+ (MMD_ADDR << MMD_CMD_S) |
+ ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ADDR_DATA_REG, reg);
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ACC_CTL_REG,
+ (MMD_DATA << MMD_CMD_S) |
+ ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
+
+ gsw->host_bus->write(gsw->host_bus, addr, MII_MMD_ADDR_DATA_REG, val);
+
+ mutex_unlock(&gsw->host_bus->mdio_lock);
+}
+
+static void mt7530_core_reg_write(struct gsw_mt753x *gsw, u32 reg, u32 val)
+{
+ gsw->mmd_write(gsw, 0, 0x1f, reg, val);
+}
+
+static void mt7530_trgmii_setting(struct gsw_mt753x *gsw)
+{
+ u16 i;
+
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP5, 0x0780);
+ mdelay(1);
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP6, 0);
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP10, 0x87);
+ mdelay(1);
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP11, 0x87);
+
+ /* PLL BIAS enable */
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP4,
+ RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN);
+ mdelay(1);
+
+ /* PLL LPF enable */
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP4,
+ RG_SYSPLL_DDSFBK_EN |
+ RG_SYSPLL_BIAS_EN | RG_SYSPLL_BIAS_LPF_EN);
+
+ /* sys PLL enable */
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP2,
+ RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
+ (1 << RG_SYSPLL_POSDIV_S));
+
+ /* LCDDDS PWDS */
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP7,
+ (3 << RG_LCCDS_C_S) |
+ RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
+ mdelay(1);
+
+ /* Enable MT7530 TRGMII clock */
+ mt7530_core_reg_write(gsw, TRGMII_GSW_CLK_CG, GSWCK_EN | TRGMIICK_EN);
+
+ /* lower Tx Driving */
+ for (i = 0 ; i < NUM_TRGMII_ODT; i++)
+ mt753x_reg_write(gsw, TRGMII_TD_ODT(i),
+ (4 << TX_DM_DRVP_S) | (4 << TX_DM_DRVN_S));
+}
+
+static void mt7530_rgmii_setting(struct gsw_mt753x *gsw)
+{
+ u32 val;
+
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP5, 0x0c80);
+ mdelay(1);
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP6, 0);
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP10, 0x87);
+ mdelay(1);
+ mt7530_core_reg_write(gsw, CORE_PLL_GROUP11, 0x87);
+
+ val = mt753x_reg_read(gsw, TRGMII_TXCTRL);
+ val &= ~TXC_INV;
+ mt753x_reg_write(gsw, TRGMII_TXCTRL, val);
+
+ mt753x_reg_write(gsw, TRGMII_TCK_CTRL,
+ (8 << TX_TAP_S) | (0x55 << TX_TRAIN_WD_S));
+}
+
+static int mt7530_mac_port_setup(struct gsw_mt753x *gsw)
+{
+ u32 hwstrap, p6ecr = 0, p5mcr, p6mcr, phyad;
+
+ hwstrap = mt753x_reg_read(gsw, MHWSTRAP);
+ hwstrap &= ~(P6_INTF_DIS | P5_INTF_MODE_RGMII | P5_INTF_DIS_S);
+ hwstrap |= P5_INTF_SEL_GMAC5;
+ if (!gsw->port5_cfg.enabled) {
+ p5mcr = FORCE_MODE;
+ hwstrap |= P5_INTF_DIS_S;
+ } else {
+ p5mcr = (IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
+ MAC_MODE | MAC_TX_EN | MAC_RX_EN |
+ BKOFF_EN | BACKPR_EN;
+
+ if (gsw->port5_cfg.force_link) {
+ p5mcr |= FORCE_MODE | FORCE_LINK | FORCE_RX_FC |
+ FORCE_TX_FC;
+ p5mcr |= gsw->port5_cfg.speed << FORCE_SPD_S;
+
+ if (gsw->port5_cfg.duplex)
+ p5mcr |= FORCE_DPX;
+ }
+
+ switch (gsw->port5_cfg.phy_mode) {
+ case PHY_INTERFACE_MODE_MII:
+ case PHY_INTERFACE_MODE_GMII:
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ hwstrap |= P5_INTF_MODE_RGMII;
+ break;
+ default:
+ dev_info(gsw->dev, "%s is not supported by port5\n",
+ phy_modes(gsw->port5_cfg.phy_mode));
+ p5mcr = FORCE_MODE;
+ hwstrap |= P5_INTF_DIS_S;
+ }
+
+ /* Port5 to PHY direct mode */
+ if (of_property_read_u32(gsw->port5_cfg.np, "phy-address",
+ &phyad))
+ goto parse_p6;
+
+ if (phyad != 0 && phyad != 4) {
+ dev_info(gsw->dev,
+ "Only PHY 0/4 can be connected to Port 5\n");
+ goto parse_p6;
+ }
+
+ hwstrap &= ~P5_INTF_SEL_GMAC5;
+ if (phyad == 0)
+ hwstrap |= P5_PHY0_SEL;
+ else
+ hwstrap &= ~P5_PHY0_SEL;
+ }
+
+parse_p6:
+ if (!gsw->port6_cfg.enabled) {
+ p6mcr = FORCE_MODE;
+ hwstrap |= P6_INTF_DIS;
+ } else {
+ p6mcr = (IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
+ MAC_MODE | MAC_TX_EN | MAC_RX_EN |
+ BKOFF_EN | BACKPR_EN;
+
+ if (gsw->port6_cfg.force_link) {
+ p6mcr |= FORCE_MODE | FORCE_LINK | FORCE_RX_FC |
+ FORCE_TX_FC;
+ p6mcr |= gsw->port6_cfg.speed << FORCE_SPD_S;
+
+ if (gsw->port6_cfg.duplex)
+ p6mcr |= FORCE_DPX;
+ }
+
+ switch (gsw->port6_cfg.phy_mode) {
+ case PHY_INTERFACE_MODE_RGMII:
+ p6ecr = BIT(1);
+ break;
+ case PHY_INTERFACE_MODE_TRGMII:
+ /* set MT7530 central align */
+ p6ecr = BIT(0);
+ break;
+ default:
+ dev_info(gsw->dev, "%s is not supported by port6\n",
+ phy_modes(gsw->port6_cfg.phy_mode));
+ p6mcr = FORCE_MODE;
+ hwstrap |= P6_INTF_DIS;
+ }
+ }
+
+ mt753x_reg_write(gsw, MHWSTRAP, hwstrap);
+ mt753x_reg_write(gsw, P6ECR, p6ecr);
+
+ mt753x_reg_write(gsw, PMCR(5), p5mcr);
+ mt753x_reg_write(gsw, PMCR(6), p6mcr);
+
+ return 0;
+}
+
+static void mt7530_core_pll_setup(struct gsw_mt753x *gsw)
+{
+ u32 hwstrap;
+
+ hwstrap = mt753x_reg_read(gsw, HWSTRAP);
+
+ switch ((hwstrap & XTAL_FSEL_M) >> XTAL_FSEL_S) {
+ case XTAL_40MHZ:
+ /* Disable MT7530 core clock */
+ mt7530_core_reg_write(gsw, TRGMII_GSW_CLK_CG, 0);
+
+ /* disable MT7530 PLL */
+ mt7530_core_reg_write(gsw, CORE_GSWPLL_GCR_1,
+ (2 << GSWPLL_POSTDIV_200M_S) |
+ (32 << GSWPLL_FBKDIV_200M_S));
+
+ /* For MT7530 core clock = 500Mhz */
+ mt7530_core_reg_write(gsw, CORE_GSWPLL_GCR_2,
+ (1 << GSWPLL_POSTDIV_500M_S) |
+ (25 << GSWPLL_FBKDIV_500M_S));
+
+ /* Enable MT7530 PLL */
+ mt7530_core_reg_write(gsw, CORE_GSWPLL_GCR_1,
+ (2 << GSWPLL_POSTDIV_200M_S) |
+ (32 << GSWPLL_FBKDIV_200M_S) |
+ GSWPLL_EN_PRE);
+
+ usleep_range(20, 40);
+
+ /* Enable MT7530 core clock */
+ mt7530_core_reg_write(gsw, TRGMII_GSW_CLK_CG, GSWCK_EN);
+ break;
+ default:
+ /* TODO: PLL settings for 20/25MHz */
+ break;
+ }
+
+ hwstrap = mt753x_reg_read(gsw, HWSTRAP);
+ hwstrap |= CHG_TRAP;
+ if (gsw->direct_phy_access)
+ hwstrap &= ~C_MDIO_BPS_S;
+ else
+ hwstrap |= C_MDIO_BPS_S;
+
+ mt753x_reg_write(gsw, MHWSTRAP, hwstrap);
+
+ if (gsw->port6_cfg.enabled &&
+ gsw->port6_cfg.phy_mode == PHY_INTERFACE_MODE_TRGMII) {
+ mt7530_trgmii_setting(gsw);
+ } else {
+ /* RGMII */
+ mt7530_rgmii_setting(gsw);
+ }
+
+ /* delay setting for 10/1000M */
+ mt753x_reg_write(gsw, P5RGMIIRXCR,
+ CSR_RGMII_EDGE_ALIGN |
+ (2 << CSR_RGMII_RXC_0DEG_CFG_S));
+ mt753x_reg_write(gsw, P5RGMIITXCR, 0x14 << CSR_RGMII_TXC_CFG_S);
+}
+
+static int mt7530_sw_detect(struct gsw_mt753x *gsw, struct chip_rev *crev)
+{
+ u32 rev;
+
+ rev = mt753x_reg_read(gsw, CHIP_REV);
+
+ if (((rev & CHIP_NAME_M) >> CHIP_NAME_S) == MT7530) {
+ if (crev) {
+ crev->rev = rev & CHIP_REV_M;
+ crev->name = "MT7530";
+ }
+
+ return 0;
+ }
+
+ return -ENODEV;
+}
+
+static void mt7530_phy_setting(struct gsw_mt753x *gsw)
+{
+ int i;
+ u32 val;
+
+ for (i = 0; i < MT753X_NUM_PHYS; i++) {
+ /* Disable EEE */
+ gsw->mmd_write(gsw, i, PHY_DEV07, PHY_DEV07_REG_03C, 0);
+
+ /* Enable HW auto downshift */
+ gsw->mii_write(gsw, i, 0x1f, 0x1);
+ val = gsw->mii_read(gsw, i, PHY_EXT_REG_14);
+ val |= PHY_EN_DOWN_SHFIT;
+ gsw->mii_write(gsw, i, PHY_EXT_REG_14, val);
+
+ /* Increase SlvDPSready time */
+ gsw->mii_write(gsw, i, 0x1f, 0x52b5);
+ gsw->mii_write(gsw, i, PHY_TR_REG_10, 0xafae);
+ gsw->mii_write(gsw, i, PHY_TR_REG_12, 0x2f);
+ gsw->mii_write(gsw, i, PHY_TR_REG_10, 0x8fae);
+
+ /* Increase post_update_timer */
+ gsw->mii_write(gsw, i, 0x1f, 0x3);
+ gsw->mii_write(gsw, i, PHY_LPI_REG_11, 0x4b);
+ gsw->mii_write(gsw, i, 0x1f, 0);
+
+ /* Adjust 100_mse_threshold */
+ gsw->mmd_write(gsw, i, PHY_DEV1E, PHY_DEV1E_REG_123, 0xffff);
+
+ /* Disable mcc */
+ gsw->mmd_write(gsw, i, PHY_DEV1E, PHY_DEV1E_REG_A6, 0x300);
+ }
+}
+
+static inline bool get_phy_access_mode(const struct device_node *np)
+{
+ return of_property_read_bool(np, "mt7530,direct-phy-access");
+}
+
+static int mt7530_sw_init(struct gsw_mt753x *gsw)
+{
+ int i;
+ u32 val;
+
+ gsw->direct_phy_access = get_phy_access_mode(gsw->dev->of_node);
+
+ /* Force MT7530 to use (in)direct PHY access */
+ val = mt753x_reg_read(gsw, HWSTRAP);
+ val |= CHG_TRAP;
+ if (gsw->direct_phy_access)
+ val &= ~C_MDIO_BPS_S;
+ else
+ val |= C_MDIO_BPS_S;
+ mt753x_reg_write(gsw, MHWSTRAP, val);
+
+ /* Read PHY address base from HWSTRAP */
+ gsw->phy_base = (((val & SMI_ADDR_M) >> SMI_ADDR_S) << 3) + 8;
+ gsw->phy_base &= MT753X_SMI_ADDR_MASK;
+
+ if (gsw->direct_phy_access) {
+ gsw->mii_read = mt7530_mii_read;
+ gsw->mii_write = mt7530_mii_write;
+ gsw->mmd_read = mt7530_mmd_read;
+ gsw->mmd_write = mt7530_mmd_write;
+ } else {
+ gsw->mii_read = mt753x_mii_read;
+ gsw->mii_write = mt753x_mii_write;
+ gsw->mmd_read = mt753x_mmd_ind_read;
+ gsw->mmd_write = mt753x_mmd_ind_write;
+ }
+
+ for (i = 0; i < MT753X_NUM_PHYS; i++) {
+ val = gsw->mii_read(gsw, i, MII_BMCR);
+ val |= BMCR_PDOWN;
+ gsw->mii_write(gsw, i, MII_BMCR, val);
+ }
+
+ /* Force MAC link down before reset */
+ mt753x_reg_write(gsw, PMCR(5), FORCE_MODE);
+ mt753x_reg_write(gsw, PMCR(6), FORCE_MODE);
+
+ /* Switch soft reset */
+ /* BUG: sw reset causes gsw int flooding */
+ mt753x_reg_write(gsw, SYS_CTRL, SW_PHY_RST | SW_SYS_RST | SW_REG_RST);
+ usleep_range(10, 20);
+
+ /* global mac control settings configuration */
+ mt753x_reg_write(gsw, GMACCR,
+ LATE_COL_DROP | (15 << MTCC_LMT_S) |
+ (2 << MAX_RX_JUMBO_S) | RX_PKT_LEN_MAX_JUMBO);
+
+ mt7530_core_pll_setup(gsw);
+ mt7530_mac_port_setup(gsw);
+
+ return 0;
+}
+
+static int mt7530_sw_post_init(struct gsw_mt753x *gsw)
+{
+ int i;
+ u32 val;
+
+ mt7530_phy_setting(gsw);
+
+ for (i = 0; i < MT753X_NUM_PHYS; i++) {
+ val = gsw->mii_read(gsw, i, MII_BMCR);
+ val &= ~BMCR_PDOWN;
+ gsw->mii_write(gsw, i, MII_BMCR, val);
+ }
+
+ return 0;
+}
+
+struct mt753x_sw_id mt7530_id = {
+ .model = MT7530,
+ .detect = mt7530_sw_detect,
+ .init = mt7530_sw_init,
+ .post_init = mt7530_sw_post_init
+};
projects / openwrt / openwrt.git / blobdiff