[PATCH net-next v3 2/2] net: ethernet: stmicro: stmmac: dwmac-rk: Add rv1126 support

Anand Moon
2022-09-20T14:10:55Z

Rockchip RV1126 has GMAC 10/100/1000M ethernet controller
via RGMII and RMII interfaces are configured via M0 and M1 pinmux.

This patch adds rv1126 support by adding delay lines of M0 and M1
simultaneously.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Anand Moon <anand@edgeble.ai>
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
---
v3: changes none
rebased on linux-net-next
v2: changes none
---
---
.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 125 ++++++++++++++++++
1 file changed, 125 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 15dea1f2a90a..f7269d79a385 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1297,6 +1297,130 @@ static const struct rk_gmac_ops rv1108_ops = {
.set_rmii_speed = rv1108_set_rmii_speed,
};

+#define RV1126_GRF_GMAC_CON0 0X0070
+#define RV1126_GRF_GMAC_CON1 0X0074
+#define RV1126_GRF_GMAC_CON2 0X0078
+
+/* RV1126_GRF_GMAC_CON0 */
+#define RV1126_GMAC_PHY_INTF_SEL_RGMII \
+ (GRF_BIT(4) | GRF_CLR_BIT(5) | GRF_CLR_BIT(6))
+#define RV1126_GMAC_PHY_INTF_SEL_RMII \
+ (GRF_CLR_BIT(4) | GRF_CLR_BIT(5) | GRF_BIT(6))
+#define RV1126_GMAC_FLOW_CTRL GRF_BIT(7)
+#define RV1126_GMAC_FLOW_CTRL_CLR GRF_CLR_BIT(7)
+#define RV1126_GMAC_M0_RXCLK_DLY_ENABLE GRF_BIT(1)
+#define RV1126_GMAC_M0_RXCLK_DLY_DISABLE GRF_CLR_BIT(1)
+#define RV1126_GMAC_M0_TXCLK_DLY_ENABLE GRF_BIT(0)
+#define RV1126_GMAC_M0_TXCLK_DLY_DISABLE GRF_CLR_BIT(0)
+#define RV1126_GMAC_M1_RXCLK_DLY_ENABLE GRF_BIT(3)
+#define RV1126_GMAC_M1_RXCLK_DLY_DISABLE GRF_CLR_BIT(3)
+#define RV1126_GMAC_M1_TXCLK_DLY_ENABLE GRF_BIT(2)
+#define RV1126_GMAC_M1_TXCLK_DLY_DISABLE GRF_CLR_BIT(2)
+
+/* RV1126_GRF_GMAC_CON1 */
+#define RV1126_GMAC_M0_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 8)
+#define RV1126_GMAC_M0_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
+/* RV1126_GRF_GMAC_CON2 */
+#define RV1126_GMAC_M1_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 8)
+#define RV1126_GMAC_M1_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
+
+static void rv1126_set_to_rgmii(struct rk_priv_data *bsp_priv,
+ int tx_delay, int rx_delay)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+
+ if (IS_ERR(bsp_priv->grf)) {
+ dev_err(dev, "Missing rockchip,grf property\n");
+ return;
+ }
+
+ regmap_write(bsp_priv->grf, RV1126_GRF_GMAC_CON0,
+ RV1126_GMAC_PHY_INTF_SEL_RGMII |
+ RV1126_GMAC_M0_RXCLK_DLY_ENABLE |
+ RV1126_GMAC_M0_TXCLK_DLY_ENABLE |
+ RV1126_GMAC_M1_RXCLK_DLY_ENABLE |
+ RV1126_GMAC_M1_TXCLK_DLY_ENABLE);
+
+ regmap_write(bsp_priv->grf, RV1126_GRF_GMAC_CON1,
+ RV1126_GMAC_M0_CLK_RX_DL_CFG(rx_delay) |
+ RV1126_GMAC_M0_CLK_TX_DL_CFG(tx_delay));
+
+ regmap_write(bsp_priv->grf, RV1126_GRF_GMAC_CON2,
+ RV1126_GMAC_M1_CLK_RX_DL_CFG(rx_delay) |
+ RV1126_GMAC_M1_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rv1126_set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+
+ if (IS_ERR(bsp_priv->grf)) {
+ dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
+ return;
+ }
+
+ regmap_write(bsp_priv->grf, RV1126_GRF_GMAC_CON0,
+ RV1126_GMAC_PHY_INTF_SEL_RMII);
+}
+
+static void rv1126_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned long rate;
+ int ret;
+
+ switch (speed) {
+ case 10:
+ rate = 2500000;
+ break;
+ case 100:
+ rate = 25000000;
+ break;
+ case 1000:
+ rate = 125000000;
+ break;
+ default:
+ dev_err(dev, "unknown speed value for RGMII speed=%d", speed);
+ return;
+ }
+
+ ret = clk_set_rate(bsp_priv->clk_mac_speed, rate);
+ if (ret)
+ dev_err(dev, "%s: set clk_mac_speed rate %ld failed %d\n",
+ __func__, rate, ret);
+}
+
+static void rv1126_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned long rate;
+ int ret;
+
+ switch (speed) {
+ case 10:
+ rate = 2500000;
+ break;
+ case 100:
+ rate = 25000000;
+ break;
+ default:
+ dev_err(dev, "unknown speed value for RGMII speed=%d", speed);
+ return;
+ }
+
+ ret = clk_set_rate(bsp_priv->clk_mac_speed, rate);
+ if (ret)
+ dev_err(dev, "%s: set clk_mac_speed rate %ld failed %d\n",
+ __func__, rate, ret);
+}
+
+static const struct rk_gmac_ops rv1126_ops = {
+ .set_to_rgmii = rv1126_set_to_rgmii,
+ .set_to_rmii = rv1126_set_to_rmii,
+ .set_rgmii_speed = rv1126_set_rgmii_speed,
+ .set_rmii_speed = rv1126_set_rmii_speed,
+};
+
#define RK_GRF_MACPHY_CON0 0xb00
#define RK_GRF_MACPHY_CON1 0xb04
#define RK_GRF_MACPHY_CON2 0xb08
@@ -1836,6 +1960,7 @@ static const struct of_device_id rk_gmac_dwmac_match[] = {
{ .compatible = "rockchip,rk3568-gmac", .data = &rk3568_ops },
{ .compatible = "rockchip,rk3588-gmac", .data = &rk3588_ops },
{ .compatible = "rockchip,rv1108-gmac", .data = &rv1108_ops },
+ { .compatible = "rockchip,rv1126-gmac", .data = &rv1126_ops },
{ }
};
MODULE_DEVICE_TABLE(of, rk_gmac_dwmac_match);
--
2.37.3