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Date:   Thu,  3 Dec 2020 12:10:38 +0800
From:   Joakim Zhang <qiangqing.zhang@....com>
To:     peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, davem@...emloft.net, kuba@...nel.org
Cc:     linux-imx@....com, netdev@...r.kernel.org
Subject: [PATCH] net: stmmac: implement .set_intf_mode() callback for imx8dxl

From: Fugang Duan <fugang.duan@....com>

Implement .set_intf_mode() callback for imx8dxl.

Signed-off-by: Fugang Duan <fugang.duan@....com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
---
 .../net/ethernet/stmicro/stmmac/dwmac-imx.c   | 34 ++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
index 223f69da7e95..1d0a4d73add6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
@@ -6,7 +6,9 @@
  *
  */
 
+#include <dt-bindings/firmware/imx/rsrc.h>
 #include <linux/clk.h>
+#include <linux/firmware/imx/sci.h>
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/syscon.h>
@@ -86,7 +88,37 @@ imx8dxl_set_intf_mode(struct plat_stmmacenet_data *plat_dat)
 {
 	int ret = 0;
 
-	/* TBD: depends on imx8dxl scu interfaces to be upstreamed */
+	struct imx_sc_ipc *ipc_handle;
+	int val;
+
+	ret = imx_scu_get_handle(&ipc_handle);
+	if (ret)
+		return ret;
+
+	switch (plat_dat->interface) {
+	case PHY_INTERFACE_MODE_MII:
+		val = GPR_ENET_QOS_INTF_SEL_MII;
+		break;
+	case PHY_INTERFACE_MODE_RMII:
+		val = 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 = GPR_ENET_QOS_INTF_SEL_RGMII;
+		break;
+	default:
+		pr_debug("imx dwmac doesn't support %d interface\n",
+			 plat_dat->interface);
+		return -EINVAL;
+	}
+
+	ret = imx_sc_misc_set_control(ipc_handle, IMX_SC_R_ENET_1,
+				      IMX_SC_C_INTF_SEL, val >> 16);
+	ret |= imx_sc_misc_set_control(ipc_handle, IMX_SC_R_ENET_1,
+				       IMX_SC_C_CLK_GEN_EN, 0x1);
+
 	return ret;
 }
 
-- 
2.17.1

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