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From:   Clark Wang <xiaoning.wang@nxp.com>
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Subject: [PATCH V2 1/7] net: stmmac: add imx93 platform support
Date:   Fri, 13 Jan 2023 11:33:41 +0800
Message-Id: <20230113033347.264135-2-xiaoning.wang@nxp.com>
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Add imx93 platform support for dwmac-imx driver.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
---
V2 change:
 - change pr_debug() to dev_dbg()
---
 .../net/ethernet/stmicro/stmmac/dwmac-imx.c   | 55 +++++++++++++++++--
 1 file changed, 50 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
index bd52fb7cf486..a7ea69d81c11 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
@@ -31,6 +31,12 @@
 #define GPR_ENET_QOS_CLK_TX_CLK_SEL	(0x1 << 20)
 #define GPR_ENET_QOS_RGMII_EN		(0x1 << 21)
 
+#define MX93_GPR_ENET_QOS_INTF_MODE_MASK	GENMASK(3, 0)
+#define MX93_GPR_ENET_QOS_INTF_SEL_MII		(0x0 << 1)
+#define MX93_GPR_ENET_QOS_INTF_SEL_RMII		(0x4 << 1)
+#define MX93_GPR_ENET_QOS_INTF_SEL_RGMII	(0x1 << 1)
+#define MX93_GPR_ENET_QOS_CLK_GEN_EN		(0x1 << 0)
+
 struct imx_dwmac_ops {
 	u32 addr_width;
 	bool mac_rgmii_txclk_auto_adj;
@@ -90,6 +96,35 @@ imx8dxl_set_intf_mode(struct plat_stmmacenet_data *plat_dat)
 	return ret;
 }
 
+static int imx93_set_intf_mode(struct plat_stmmacenet_data *plat_dat)
+{
+	struct imx_priv_data *dwmac = plat_dat->bsp_priv;
+	int val;
+
+	switch (plat_dat->interface) {
+	case PHY_INTERFACE_MODE_MII:
+		val = MX93_GPR_ENET_QOS_INTF_SEL_MII;
+		break;
+	case PHY_INTERFACE_MODE_RMII:
+		val = MX93_GPR_ENET_QOS_INTF_SEL_RMII;
+		break;
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		val = MX93_GPR_ENET_QOS_INTF_SEL_RGMII;
+		break;
+	default:
+		dev_dbg(dwmac->dev, "imx dwmac doesn't support %d interface\n",
+			 plat_dat->interface);
+		return -EINVAL;
+	}
+
+	val |= MX93_GPR_ENET_QOS_CLK_GEN_EN;
+	return regmap_update_bits(dwmac->intf_regmap, dwmac->intf_reg_off,
+				  MX93_GPR_ENET_QOS_INTF_MODE_MASK, val);
+};
+
 static int imx_dwmac_clks_config(void *priv, bool enabled)
 {
 	struct imx_priv_data *dwmac = priv;
@@ -188,7 +223,9 @@ imx_dwmac_parse_dt(struct imx_priv_data *dwmac, struct device *dev)
 	}
 
 	dwmac->clk_mem = NULL;
-	if (of_machine_is_compatible("fsl,imx8dxl")) {
+
+	if (of_machine_is_compatible("fsl,imx8dxl") ||
+	    of_machine_is_compatible("fsl,imx93")) {
 		dwmac->clk_mem = devm_clk_get(dev, "mem");
 		if (IS_ERR(dwmac->clk_mem)) {
 			dev_err(dev, "failed to get mem clock\n");
@@ -196,10 +233,11 @@ imx_dwmac_parse_dt(struct imx_priv_data *dwmac, struct device *dev)
 		}
 	}
 
-	if (of_machine_is_compatible("fsl,imx8mp")) {
-		/* Binding doc describes the property:
-		   is required by i.MX8MP.
-		   is optional for i.MX8DXL.
+	if (of_machine_is_compatible("fsl,imx8mp") ||
+	    of_machine_is_compatible("fsl,imx93")) {
+		/* Binding doc describes the propety:
+		 * is required by i.MX8MP, i.MX93.
+		 * is optinoal for i.MX8DXL.
 		 */
 		dwmac->intf_regmap = syscon_regmap_lookup_by_phandle(np, "intf_mode");
 		if (IS_ERR(dwmac->intf_regmap))
@@ -296,9 +334,16 @@ static struct imx_dwmac_ops imx8dxl_dwmac_data = {
 	.set_intf_mode = imx8dxl_set_intf_mode,
 };
 
+static struct imx_dwmac_ops imx93_dwmac_data = {
+	.addr_width = 32,
+	.mac_rgmii_txclk_auto_adj = true,
+	.set_intf_mode = imx93_set_intf_mode,
+};
+
 static const struct of_device_id imx_dwmac_match[] = {
 	{ .compatible = "nxp,imx8mp-dwmac-eqos", .data = &imx8mp_dwmac_data },
 	{ .compatible = "nxp,imx8dxl-dwmac-eqos", .data = &imx8dxl_dwmac_data },
+	{ .compatible = "nxp,imx93-dwmac-eqos", .data = &imx93_dwmac_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, imx_dwmac_match);
-- 
2.34.1