2022-10-12 11:11:34

by Clark Wang

Subject: [PATCH 1/3] net: stmmac: add imx93 platform support

Add imx93 platform support for dwmac-imx driver.

Signed-off-by: Clark Wang <[email protected]>
---
.../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..b670f07ea2a9 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:
+ pr_debug("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

2022-10-12 21:41:49

by Andrew Lunn

Subject: Re: [PATCH 1/3] net: stmmac: add imx93 platform support

> +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:
> + pr_debug("imx dwmac doesn't support %d interface\n",
> + plat_dat->interface);

netdev_debug(), or dev_debug(), so there is some clue which of the 42
dwmac instances has a bad value in DT.