net: stmmac: dwmac-qcom-ethqos: add support for emac4 on sa8775p platforms

sa8775p uses EMAC version 4, add the relevant defines, rename the
has_emac3 switch to has_emac_ge_3 (has emac greater-or-equal than 3)
and add the new compatible.

Signed-off-by: Bartosz Golaszewski <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Bartosz Golaszewski

drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c

@@ -88,8 +88,9 @@ struct ethqos_emac_driver_data {
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
 	bool rgmii_config_loopback_en;
-	bool has_emac3;
+	bool has_emac_ge_3;
 	const char *link_clk_name;
+	bool has_integrated_pcs;
 	struct dwmac4_addrs dwmac4_addrs;
 };
 
@@ -108,7 +109,7 @@ struct qcom_ethqos {
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
 	bool rgmii_config_loopback_en;
-	bool has_emac3;
+	bool has_emac_ge_3;
 };
 
 static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset)
@@ -202,7 +203,7 @@ static const struct ethqos_emac_driver_data emac_v2_3_0_data = {
 	.por = emac_v2_3_0_por,
 	.num_por = ARRAY_SIZE(emac_v2_3_0_por),
 	.rgmii_config_loopback_en = true,
-	.has_emac3 = false,
+	.has_emac_ge_3 = false,
 };
 
 static const struct ethqos_emac_por emac_v2_1_0_por[] = {
@@ -218,7 +219,7 @@ static const struct ethqos_emac_driver_data emac_v2_1_0_data = {
 	.por = emac_v2_1_0_por,
 	.num_por = ARRAY_SIZE(emac_v2_1_0_por),
 	.rgmii_config_loopback_en = false,
-	.has_emac3 = false,
+	.has_emac_ge_3 = false,
 };
 
 static const struct ethqos_emac_por emac_v3_0_0_por[] = {
@@ -234,7 +235,41 @@ static const struct ethqos_emac_driver_data emac_v3_0_0_data = {
 	.por = emac_v3_0_0_por,
 	.num_por = ARRAY_SIZE(emac_v3_0_0_por),
 	.rgmii_config_loopback_en = false,
-	.has_emac3 = true,
+	.has_emac_ge_3 = true,
+	.dwmac4_addrs = {
+		.dma_chan = 0x00008100,
+		.dma_chan_offset = 0x1000,
+		.mtl_chan = 0x00008000,
+		.mtl_chan_offset = 0x1000,
+		.mtl_ets_ctrl = 0x00008010,
+		.mtl_ets_ctrl_offset = 0x1000,
+		.mtl_txq_weight = 0x00008018,
+		.mtl_txq_weight_offset = 0x1000,
+		.mtl_send_slp_cred = 0x0000801c,
+		.mtl_send_slp_cred_offset = 0x1000,
+		.mtl_high_cred = 0x00008020,
+		.mtl_high_cred_offset = 0x1000,
+		.mtl_low_cred = 0x00008024,
+		.mtl_low_cred_offset = 0x1000,
+	},
+};
+
+static const struct ethqos_emac_por emac_v4_0_0_por[] = {
+	{ .offset = RGMII_IO_MACRO_CONFIG,	.value = 0x40c01343 },
+	{ .offset = SDCC_HC_REG_DLL_CONFIG,	.value = 0x2004642c },
+	{ .offset = SDCC_HC_REG_DDR_CONFIG,	.value = 0x80040800 },
+	{ .offset = SDCC_HC_REG_DLL_CONFIG2,	.value = 0x00200000 },
+	{ .offset = SDCC_USR_CTL,		.value = 0x00010800 },
+	{ .offset = RGMII_IO_MACRO_CONFIG2,	.value = 0x00002060 },
+};
+
+static const struct ethqos_emac_driver_data emac_v4_0_0_data = {
+	.por = emac_v4_0_0_por,
+	.num_por = ARRAY_SIZE(emac_v3_0_0_por),
+	.rgmii_config_loopback_en = false,
+	.has_emac_ge_3 = true,
+	.link_clk_name = "phyaux",
+	.has_integrated_pcs = true,
 	.dwmac4_addrs = {
 		.dma_chan = 0x00008100,
 		.dma_chan_offset = 0x1000,
@@ -275,7 +310,7 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_EN,
 		      SDCC_DLL_CONFIG_DLL_EN, SDCC_HC_REG_DLL_CONFIG);
 
-	if (!ethqos->has_emac3) {
+	if (!ethqos->has_emac_ge_3) {
 		rgmii_updatel(ethqos, SDCC_DLL_MCLK_GATING_EN,
 			      0, SDCC_HC_REG_DLL_CONFIG);
 
@@ -316,7 +351,7 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_CAL_EN,
 		      SDCC_DLL_CONFIG2_DDR_CAL_EN, SDCC_HC_REG_DLL_CONFIG2);
 
-	if (!ethqos->has_emac3) {
+	if (!ethqos->has_emac_ge_3) {
 		rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DLL_CLOCK_DIS,
 			      0, SDCC_HC_REG_DLL_CONFIG2);
 
@@ -386,7 +421,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 		/* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT / 2 * RX delay ns,
 		 * in practice this becomes PRG_RCLK_DLY = 52 * 4 / 2 * RX delay ns
 		 */
-		if (ethqos->has_emac3) {
+		if (ethqos->has_emac_ge_3) {
 			/* 0.9 ns */
 			rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY,
 				      115, SDCC_HC_REG_DDR_CONFIG);
@@ -421,7 +456,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
 			      0, RGMII_IO_MACRO_CONFIG2);
 
-		if (ethqos->has_emac3)
+		if (ethqos->has_emac_ge_3)
 			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
 				      RGMII_CONFIG2_RX_PROG_SWAP,
 				      RGMII_IO_MACRO_CONFIG2);
@@ -461,7 +496,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 			      RGMII_IO_MACRO_CONFIG);
 		rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15,
 			      0, RGMII_IO_MACRO_CONFIG2);
-		if (ethqos->has_emac3)
+		if (ethqos->has_emac_ge_3)
 			rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP,
 				      RGMII_CONFIG2_RX_PROG_SWAP,
 				      RGMII_IO_MACRO_CONFIG2);
@@ -510,7 +545,7 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
 	rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN,
 		      SDCC_DLL_CONFIG_PDN, SDCC_HC_REG_DLL_CONFIG);
 
-	if (ethqos->has_emac3) {
+	if (ethqos->has_emac_ge_3) {
 		if (ethqos->speed == SPEED_1000) {
 			rgmii_writel(ethqos, 0x1800000, SDCC_TEST_CTL);
 			rgmii_writel(ethqos, 0x2C010800, SDCC_USR_CTL);
@@ -540,7 +575,7 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
 			      SDCC_HC_REG_DLL_CONFIG);
 
 		/* Set USR_CTL bit 26 with mask of 3 bits */
-		if (!ethqos->has_emac3)
+		if (!ethqos->has_emac_ge_3)
 			rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26),
 				      SDCC_USR_CTL);
 
@@ -719,7 +754,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	ethqos->por = data->por;
 	ethqos->num_por = data->num_por;
 	ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
-	ethqos->has_emac3 = data->has_emac3;
+	ethqos->has_emac_ge_3 = data->has_emac_ge_3;
 
 	ethqos->link_clk = devm_clk_get(dev, data->link_clk_name ?: "rgmii");
 	if (IS_ERR(ethqos->link_clk)) {
@@ -749,12 +784,13 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	plat_dat->fix_mac_speed = ethqos_fix_mac_speed;
 	plat_dat->dump_debug_regs = rgmii_dump;
 	plat_dat->has_gmac4 = 1;
-	if (ethqos->has_emac3)
+	if (ethqos->has_emac_ge_3)
 		plat_dat->dwmac4_addrs = &data->dwmac4_addrs;
 	plat_dat->pmt = 1;
 	plat_dat->tso_en = of_property_read_bool(np, "snps,tso");
 	if (of_device_is_compatible(np, "qcom,qcs404-ethqos"))
 		plat_dat->rx_clk_runs_in_lpi = 1;
+	plat_dat->has_integrated_pcs = data->has_integrated_pcs;
 
 	if (ethqos->serdes_phy) {
 		plat_dat->serdes_powerup = qcom_ethqos_serdes_powerup;
@@ -775,6 +811,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 
 static const struct of_device_id qcom_ethqos_match[] = {
 	{ .compatible = "qcom,qcs404-ethqos", .data = &emac_v2_3_0_data},
+	{ .compatible = "qcom,sa8775p-ethqos", .data = &emac_v4_0_0_data},
 	{ .compatible = "qcom,sc8280xp-ethqos", .data = &emac_v3_0_0_data},
 	{ .compatible = "qcom,sm8150-ethqos", .data = &emac_v2_1_0_data},
 	{ }