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openwrt/package/boot/uboot-mediatek/patches/101-26-net-mediatek-add-support-for-MediaTek-MT7988-SoC.patch
Daniel Golle 572ea68070 uboot-mediatek: add patches for MT7988 and builds for RFB 
Import pending patches adding support for MT7988 and provide builds
for the reference board for all possible boot media.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2023-07-29 15:07:11 +01:00

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From 59dba9d87c9caf04a5d797af46699055a53870f4 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Wed, 19 Jul 2023 17:17:41 +0800
Subject: [PATCH 26/29] net: mediatek: add support for MediaTek MT7988 SoC
This patch adds support for MediaTek MT7988.
MT7988 features MediaTek NETSYS v3, including three GMACs, and two
of them supports 10Gbps USXGMII.
MT7988 embeds a MT7531 switch (not MCM) which supports accessing
internal registers through MMIO instead of MDIO.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
drivers/net/mtk_eth.c | 158 +++++++++++++++++++++++++++++++++++++++++-
drivers/net/mtk_eth.h | 20 ++++++
2 files changed, 177 insertions(+), 1 deletion(-)
--- a/drivers/net/mtk_eth.c
+++ b/drivers/net/mtk_eth.c
@@ -54,6 +54,16 @@
(DP_PDMA << MC_DP_S) | \
(DP_PDMA << UN_DP_S))
+#define GDMA_BRIDGE_TO_CPU \
+ (0xC0000000 | \
+ GDM_ICS_EN | \
+ GDM_TCS_EN | \
+ GDM_UCS_EN | \
+ (DP_PDMA << MYMAC_DP_S) | \
+ (DP_PDMA << BC_DP_S) | \
+ (DP_PDMA << MC_DP_S) | \
+ (DP_PDMA << UN_DP_S))
+
#define GDMA_FWD_DISCARD \
(0x20000000 | \
GDM_ICS_EN | \
@@ -68,7 +78,8 @@
enum mtk_switch {
SW_NONE,
SW_MT7530,
- SW_MT7531
+ SW_MT7531,
+ SW_MT7988,
};
/* struct mtk_soc_data - This is the structure holding all differences
@@ -102,6 +113,7 @@ struct mtk_eth_priv {
void __iomem *fe_base;
void __iomem *gmac_base;
void __iomem *sgmii_base;
+ void __iomem *gsw_base;
struct regmap *ethsys_regmap;
@@ -171,6 +183,11 @@ static void mtk_gdma_write(struct mtk_et
writel(val, priv->fe_base + gdma_base + reg);
}
+static void mtk_fe_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr, u32 set)
+{
+ clrsetbits_le32(priv->fe_base + reg, clr, set);
+}
+
static u32 mtk_gmac_read(struct mtk_eth_priv *priv, u32 reg)
{
return readl(priv->gmac_base + reg);
@@ -208,6 +225,16 @@ static void mtk_infra_rmw(struct mtk_eth
regmap_write(priv->infra_regmap, reg, val);
}
+static u32 mtk_gsw_read(struct mtk_eth_priv *priv, u32 reg)
+{
+ return readl(priv->gsw_base + reg);
+}
+
+static void mtk_gsw_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
+{
+ writel(val, priv->gsw_base + reg);
+}
+
/* Direct MDIO clause 22/45 access via SoC */
static int mtk_mii_rw(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data,
u32 cmd, u32 st)
@@ -342,6 +369,11 @@ static int mt753x_reg_read(struct mtk_et
{
int ret, low_word, high_word;
+ if (priv->sw == SW_MT7988) {
+ *data = mtk_gsw_read(priv, reg);
+ return 0;
+ }
+
/* Write page address */
ret = mtk_mii_write(priv, priv->mt753x_smi_addr, 0x1f, reg >> 6);
if (ret)
@@ -367,6 +399,11 @@ static int mt753x_reg_write(struct mtk_e
{
int ret;
+ if (priv->sw == SW_MT7988) {
+ mtk_gsw_write(priv, reg, data);
+ return 0;
+ }
+
/* Write page address */
ret = mtk_mii_write(priv, priv->mt753x_smi_addr, 0x1f, reg >> 6);
if (ret)
@@ -537,6 +574,7 @@ static int mtk_mdio_register(struct udev
priv->mmd_write = mtk_mmd_ind_write;
break;
case SW_MT7531:
+ case SW_MT7988:
priv->mii_read = mt7531_mii_ind_read;
priv->mii_write = mt7531_mii_ind_write;
priv->mmd_read = mt7531_mmd_ind_read;
@@ -957,6 +995,103 @@ static int mt7531_setup(struct mtk_eth_p
return 0;
}
+static void mt7988_phy_setting(struct mtk_eth_priv *priv)
+{
+ u16 val;
+ u32 i;
+
+ for (i = 0; i < MT753X_NUM_PHYS; i++) {
+ /* Enable HW auto downshift */
+ priv->mii_write(priv, i, 0x1f, 0x1);
+ val = priv->mii_read(priv, i, PHY_EXT_REG_14);
+ val |= PHY_EN_DOWN_SHFIT;
+ priv->mii_write(priv, i, PHY_EXT_REG_14, val);
+
+ /* PHY link down power saving enable */
+ val = priv->mii_read(priv, i, PHY_EXT_REG_17);
+ val |= PHY_LINKDOWN_POWER_SAVING_EN;
+ priv->mii_write(priv, i, PHY_EXT_REG_17, val);
+ }
+}
+
+static void mt7988_mac_control(struct mtk_eth_priv *priv, bool enable)
+{
+ u32 pmcr = FORCE_MODE_LNK;
+
+ if (enable)
+ pmcr = priv->mt753x_pmcr;
+
+ mt753x_reg_write(priv, PMCR_REG(6), pmcr);
+}
+
+static int mt7988_setup(struct mtk_eth_priv *priv)
+{
+ u16 phy_addr, phy_val;
+ u32 pmcr;
+ int i;
+
+ priv->gsw_base = regmap_get_range(priv->ethsys_regmap, 0) + GSW_BASE;
+
+ priv->mt753x_phy_base = (priv->mt753x_smi_addr + 1) &
+ MT753X_SMI_ADDR_MASK;
+
+ /* Turn off PHYs */
+ for (i = 0; i < MT753X_NUM_PHYS; i++) {
+ phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, i);
+ phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
+ phy_val |= BMCR_PDOWN;
+ priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
+ }
+
+ switch (priv->phy_interface) {
+ case PHY_INTERFACE_MODE_USXGMII:
+ /* Use CPU bridge instead of actual USXGMII path */
+
+ /* Set GDM1 no drop */
+ mtk_fe_rmw(priv, PSE_NO_DROP_CFG_REG, 0, PSE_NO_DROP_GDM1);
+
+ /* Enable GDM1 to GSW CPU bridge */
+ mtk_gmac_rmw(priv, GMAC_MAC_MISC_REG, 0, BIT(0));
+
+ /* XGMAC force link up */
+ mtk_gmac_rmw(priv, GMAC_XGMAC_STS_REG, 0, P1_XGMAC_FORCE_LINK);
+
+ /* Setup GSW CPU bridge IPG */
+ mtk_gmac_rmw(priv, GMAC_GSW_CFG_REG, GSWTX_IPG_M | GSWRX_IPG_M,
+ (0xB << GSWTX_IPG_S) | (0xB << GSWRX_IPG_S));
+ break;
+ default:
+ printf("Error: MT7988 GSW does not support %s interface\n",
+ phy_string_for_interface(priv->phy_interface));
+ break;
+ }
+
+ pmcr = MT7988_FORCE_MODE |
+ (IPG_96BIT_WITH_SHORT_IPG << IPG_CFG_S) |
+ MAC_MODE | MAC_TX_EN | MAC_RX_EN |
+ BKOFF_EN | BACKPR_EN |
+ FORCE_RX_FC | FORCE_TX_FC |
+ (SPEED_1000M << FORCE_SPD_S) | FORCE_DPX |
+ FORCE_LINK;
+
+ priv->mt753x_pmcr = pmcr;
+
+ /* Keep MAC link down before starting eth */
+ mt753x_reg_write(priv, PMCR_REG(6), FORCE_MODE_LNK);
+
+ /* Turn on PHYs */
+ for (i = 0; i < MT753X_NUM_PHYS; i++) {
+ phy_addr = MT753X_PHY_ADDR(priv->mt753x_phy_base, i);
+ phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
+ phy_val &= ~BMCR_PDOWN;
+ priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
+ }
+
+ mt7988_phy_setting(priv);
+
+ return 0;
+}
+
static int mt753x_switch_init(struct mtk_eth_priv *priv)
{
int ret;
@@ -1497,6 +1632,11 @@ static int mtk_eth_start(struct udevice
}
if (MTK_HAS_CAPS(priv->soc->caps, MTK_NETSYS_V3)) {
+ if (priv->sw == SW_MT7988 && priv->gmac_id == 0) {
+ mtk_gdma_write(priv, priv->gmac_id, GDMA_IG_CTRL_REG,
+ GDMA_BRIDGE_TO_CPU);
+ }
+
mtk_gdma_write(priv, priv->gmac_id, GDMA_EG_CTRL_REG,
GDMA_CPU_BRIDGE_EN);
}
@@ -1845,6 +1985,12 @@ static int mtk_eth_of_to_plat(struct ude
priv->switch_mac_control = mt7531_mac_control;
priv->mt753x_smi_addr = MT753X_DFL_SMI_ADDR;
priv->mt753x_reset_wait_time = 200;
+ } else if (!strcmp(str, "mt7988")) {
+ priv->sw = SW_MT7988;
+ priv->switch_init = mt7988_setup;
+ priv->switch_mac_control = mt7988_mac_control;
+ priv->mt753x_smi_addr = MT753X_DFL_SMI_ADDR;
+ priv->mt753x_reset_wait_time = 50;
} else {
printf("error: unsupported switch\n");
return -EINVAL;
@@ -1879,6 +2025,15 @@ static int mtk_eth_of_to_plat(struct ude
return 0;
}
+static const struct mtk_soc_data mt7988_data = {
+ .caps = MT7988_CAPS,
+ .ana_rgc3 = 0x128,
+ .gdma_count = 3,
+ .pdma_base = PDMA_V3_BASE,
+ .txd_size = sizeof(struct mtk_tx_dma_v2),
+ .rxd_size = sizeof(struct mtk_rx_dma_v2),
+};
+
static const struct mtk_soc_data mt7986_data = {
.caps = MT7986_CAPS,
.ana_rgc3 = 0x128,
@@ -1930,6 +2085,7 @@ static const struct mtk_soc_data mt7621_
};
static const struct udevice_id mtk_eth_ids[] = {
+ { .compatible = "mediatek,mt7988-eth", .data = (ulong)&mt7988_data },
{ .compatible = "mediatek,mt7986-eth", .data = (ulong)&mt7986_data },
{ .compatible = "mediatek,mt7981-eth", .data = (ulong)&mt7981_data },
{ .compatible = "mediatek,mt7629-eth", .data = (ulong)&mt7629_data },
--- a/drivers/net/mtk_eth.h
+++ b/drivers/net/mtk_eth.h
@@ -51,6 +51,8 @@ enum mkt_eth_capabilities {
#define MT7986_CAPS (MTK_NETSYS_V2)
+#define MT7988_CAPS (MTK_NETSYS_V3 | MTK_INFRA)
+
/* Frame Engine Register Bases */
#define PDMA_V1_BASE 0x0800
#define PDMA_V2_BASE 0x6000
@@ -59,6 +61,7 @@ enum mkt_eth_capabilities {
#define GDMA2_BASE 0x1500
#define GDMA3_BASE 0x0540
#define GMAC_BASE 0x10000
+#define GSW_BASE 0x20000
/* Ethernet subsystem registers */
@@ -117,6 +120,9 @@ enum mkt_eth_capabilities {
#define RG_XFI_PLL_ANA_SWWA 0x02283248
/* Frame Engine Registers */
+#define PSE_NO_DROP_CFG_REG 0x108
+#define PSE_NO_DROP_GDM1 BIT(1)
+
#define FE_GLO_MISC_REG 0x124
#define PDMA_VER_V2 BIT(4)
@@ -187,6 +193,17 @@ enum mkt_eth_capabilities {
#define MDIO_RW_DATA_S 0
#define MDIO_RW_DATA_M 0xffff
+#define GMAC_XGMAC_STS_REG 0x000c
+#define P1_XGMAC_FORCE_LINK BIT(15)
+
+#define GMAC_MAC_MISC_REG 0x0010
+
+#define GMAC_GSW_CFG_REG 0x0080
+#define GSWTX_IPG_M 0xF0000
+#define GSWTX_IPG_S 16
+#define GSWRX_IPG_M 0xF
+#define GSWRX_IPG_S 0
+
/* MDIO_CMD: MDIO commands */
#define MDIO_CMD_ADDR 0
#define MDIO_CMD_WRITE 1
@@ -285,6 +302,9 @@ enum mkt_eth_capabilities {
FORCE_MODE_TX_FC | FORCE_MODE_RX_FC | \
FORCE_MODE_DPX | FORCE_MODE_SPD | \
FORCE_MODE_LNK
+#define MT7988_FORCE_MODE FORCE_MODE_TX_FC | FORCE_MODE_RX_FC | \
+ FORCE_MODE_DPX | FORCE_MODE_SPD | \
+ FORCE_MODE_LNK
/* MT7531 SGMII Registers */
#define MT7531_SGMII_REG_BASE 0x5000
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