[PATCH v2 2/3] ethernet: stmmac: dwmac-rk: Add gmac support for rk3562

Kever Yang
2025-02-27T11:36:00Z

From: David Wu <david.wu@rock-chips.com>

Add constants and callback functions for the dwmac on RK3562 soc.
As can be seen, the base structure is the same.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
---

Changes in v2:
- Collect review tag

.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 207 +++++++++++++++++-
1 file changed, 205 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index a4dc89e23a68..ccf4ecdffad3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -2,8 +2,7 @@
/**
* DOC: dwmac-rk.c - Rockchip RK3288 DWMAC specific glue layer
*
- * Copyright (C) 2014 Chen-Zhi (Roger Chen)
- *
+ * Copyright (c) 2014 Rockchip Electronics Co., Ltd.
* Chen-Zhi (Roger Chen) <roger.chen@rock-chips.com>
*/

@@ -91,6 +90,16 @@ struct rk_priv_data {
(((tx) ? soc##_GMAC_TXCLK_DLY_ENABLE : soc##_GMAC_TXCLK_DLY_DISABLE) | \
((rx) ? soc##_GMAC_RXCLK_DLY_ENABLE : soc##_GMAC_RXCLK_DLY_DISABLE))

+#define DELAY_VALUE(soc, tx, rx) \
+ ((((tx) >= 0) ? soc##_GMAC_CLK_TX_DL_CFG(tx) : 0) | \
+ (((rx) >= 0) ? soc##_GMAC_CLK_RX_DL_CFG(rx) : 0))
+
+#define GMAC_RGMII_CLK_DIV_BY_ID(soc, id, div) \
+ (soc##_GMAC##id##_CLK_RGMII_DIV##div)
+
+#define GMAC_RMII_CLK_DIV_BY_ID(soc, id, div) \
+ (soc##_GMAC##id##_CLK_RMII_DIV##div)
+
#define PX30_GRF_GMAC_CON1 0x0904

/* PX30_GRF_GMAC_CON1 */
@@ -1013,6 +1022,199 @@ static const struct rk_gmac_ops rk3399_ops = {
.set_rmii_speed = rk3399_set_rmii_speed,
};

+/* sys_grf */
+#define RK3562_GRF_SYS_SOC_CON0 0X0400
+#define RK3562_GRF_SYS_SOC_CON1 0X0404
+
+#define RK3562_GMAC0_CLK_RMII_MODE GRF_BIT(5)
+#define RK3562_GMAC0_CLK_RGMII_MODE GRF_CLR_BIT(5)
+
+#define RK3562_GMAC0_CLK_RMII_GATE GRF_BIT(6)
+#define RK3562_GMAC0_CLK_RMII_NOGATE GRF_CLR_BIT(6)
+
+#define RK3562_GMAC0_CLK_RMII_DIV2 GRF_BIT(7)
+#define RK3562_GMAC0_CLK_RMII_DIV20 GRF_CLR_BIT(7)
+
+#define RK3562_GMAC0_CLK_RGMII_DIV1 \
+ (GRF_CLR_BIT(7) | GRF_CLR_BIT(8))
+#define RK3562_GMAC0_CLK_RGMII_DIV5 \
+ (GRF_BIT(7) | GRF_BIT(8))
+#define RK3562_GMAC0_CLK_RGMII_DIV50 \
+ (GRF_CLR_BIT(7) | GRF_BIT(8))
+
+#define RK3562_GMAC0_CLK_RMII_DIV2 GRF_BIT(7)
+#define RK3562_GMAC0_CLK_RMII_DIV20 GRF_CLR_BIT(7)
+
+#define RK3562_GMAC0_CLK_SELET_CRU GRF_CLR_BIT(9)
+#define RK3562_GMAC0_CLK_SELET_IO GRF_BIT(9)
+
+#define RK3562_GMAC1_CLK_RMII_GATE GRF_BIT(12)
+#define RK3562_GMAC1_CLK_RMII_NOGATE GRF_CLR_BIT(12)
+
+#define RK3562_GMAC1_CLK_RMII_DIV2 GRF_BIT(13)
+#define RK3562_GMAC1_CLK_RMII_DIV20 GRF_CLR_BIT(13)
+
+#define RK3562_GMAC1_RMII_SPEED100 GRF_BIT(11)
+#define RK3562_GMAC1_RMII_SPEED10 GRF_CLR_BIT(11)
+
+#define RK3562_GMAC1_CLK_SELET_CRU GRF_CLR_BIT(15)
+#define RK3562_GMAC1_CLK_SELET_IO GRF_BIT(15)
+
+/* ioc_grf */
+#define RK3562_GRF_IOC_GMAC_IOFUNC0_CON0 0X10400
+#define RK3562_GRF_IOC_GMAC_IOFUNC0_CON1 0X10404
+#define RK3562_GRF_IOC_GMAC_IOFUNC1_CON0 0X00400
+#define RK3562_GRF_IOC_GMAC_IOFUNC1_CON1 0X00404
+
+#define RK3562_GMAC_RXCLK_DLY_ENABLE GRF_BIT(1)
+#define RK3562_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(1)
+#define RK3562_GMAC_TXCLK_DLY_ENABLE GRF_BIT(0)
+#define RK3562_GMAC_TXCLK_DLY_DISABLE GRF_CLR_BIT(0)
+
+#define RK3562_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0xFF, 8)
+#define RK3562_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0xFF, 0)
+
+#define RK3562_GMAC0_IO_EXTCLK_SELET_CRU GRF_CLR_BIT(2)
+#define RK3562_GMAC0_IO_EXTCLK_SELET_IO GRF_BIT(2)
+
+#define RK3562_GMAC1_IO_EXTCLK_SELET_CRU GRF_CLR_BIT(3)
+#define RK3562_GMAC1_IO_EXTCLK_SELET_IO GRF_BIT(3)
+
+static void rk3562_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) || IS_ERR(bsp_priv->php_grf)) {
+ dev_err(dev, "Missing rockchip,grf or rockchip,php_grf property\n");
+ return;
+ }
+
+ if (bsp_priv->id > 0)
+ return;
+
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC0_CLK_RGMII_MODE);
+
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC0_CON1,
+ DELAY_ENABLE(RK3562, tx_delay, rx_delay));
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC0_CON0,
+ DELAY_VALUE(RK3562, tx_delay, rx_delay));
+
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC1_CON1,
+ DELAY_ENABLE(RK3562, tx_delay, rx_delay));
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC1_CON0,
+ DELAY_VALUE(RK3562, tx_delay, rx_delay));
+}
+
+static void rk3562_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;
+ }
+
+ if (!bsp_priv->id)
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC0_CLK_RMII_MODE);
+}
+
+static void rk3562_set_gmac_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int val = 0, offset, id = bsp_priv->id;
+
+ switch (speed) {
+ case 10:
+ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) {
+ if (id > 0) {
+ val = GMAC_RMII_CLK_DIV_BY_ID(RK3562, 1, 20);
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC1_RMII_SPEED10);
+ } else {
+ val = GMAC_RMII_CLK_DIV_BY_ID(RK3562, 0, 20);
+ }
+ } else {
+ val = GMAC_RGMII_CLK_DIV_BY_ID(RK3562, 0, 50);
+ }
+ break;
+ case 100:
+ if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) {
+ if (id > 0) {
+ val = GMAC_RMII_CLK_DIV_BY_ID(RK3562, 1, 2);
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC1_RMII_SPEED100);
+ } else {
+ val = GMAC_RMII_CLK_DIV_BY_ID(RK3562, 0, 2);
+ }
+ } else {
+ val = GMAC_RGMII_CLK_DIV_BY_ID(RK3562, 0, 5);
+ }
+ break;
+ case 1000:
+ if (bsp_priv->phy_iface != PHY_INTERFACE_MODE_RMII)
+ val = GMAC_RGMII_CLK_DIV_BY_ID(RK3562, 0, 1);
+ else
+ goto err;
+ break;
+ default:
+ goto err;
+ }
+
+ offset = (bsp_priv->id > 0) ? RK3562_GRF_SYS_SOC_CON1 :
+ RK3562_GRF_SYS_SOC_CON0;
+ regmap_write(bsp_priv->grf, offset, val);
+
+ return;
+err:
+ dev_err(dev, "unknown speed value for GMAC speed=%d", speed);
+}
+
+static void rk3562_set_clock_selection(struct rk_priv_data *bsp_priv, bool input,
+ bool enable)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int value;
+
+ if (IS_ERR(bsp_priv->grf) || IS_ERR(bsp_priv->php_grf)) {
+ dev_err(dev, "Missing rockchip,grf or rockchip,php_grf property\n");
+ return;
+ }
+
+ if (!bsp_priv->id) {
+ value = input ? RK3562_GMAC0_CLK_SELET_IO :
+ RK3562_GMAC0_CLK_SELET_CRU;
+ value |= enable ? RK3562_GMAC0_CLK_RMII_NOGATE :
+ RK3562_GMAC0_CLK_RMII_GATE;
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0, value);
+
+ value = input ? RK3562_GMAC0_IO_EXTCLK_SELET_IO :
+ RK3562_GMAC0_IO_EXTCLK_SELET_CRU;
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC0_CON1, value);
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC1_CON1, value);
+ } else {
+ value = input ? RK3562_GMAC1_CLK_SELET_IO :
+ RK3562_GMAC1_CLK_SELET_CRU;
+ value |= enable ? RK3562_GMAC1_CLK_RMII_NOGATE :
+ RK3562_GMAC1_CLK_RMII_GATE;
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON1, value);
+
+ value = input ? RK3562_GMAC1_IO_EXTCLK_SELET_IO :
+ RK3562_GMAC1_IO_EXTCLK_SELET_CRU;
+ regmap_write(bsp_priv->php_grf, RK3562_GRF_IOC_GMAC_IOFUNC1_CON1, value);
+ }
+}
+
+static const struct rk_gmac_ops rk3562_ops = {
+ .set_to_rgmii = rk3562_set_to_rgmii,
+ .set_to_rmii = rk3562_set_to_rmii,
+ .set_rgmii_speed = rk3562_set_gmac_speed,
+ .set_rmii_speed = rk3562_set_gmac_speed,
+ .set_clock_selection = rk3562_set_clock_selection,
+};
+
#define RK3568_GRF_GMAC0_CON0 0x0380
#define RK3568_GRF_GMAC0_CON1 0x0384
#define RK3568_GRF_GMAC1_CON0 0x0388
@@ -2044,6 +2246,7 @@ static const struct of_device_id rk_gmac_dwmac_match[] = {
{ .compatible = "rockchip,rk3366-gmac", .data = &rk3366_ops },
{ .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
{ .compatible = "rockchip,rk3399-gmac", .data = &rk3399_ops },
+ { .compatible = "rockchip,rk3562-gmac", .data = &rk3562_ops },
{ .compatible = "rockchip,rk3568-gmac", .data = &rk3568_ops },
{ .compatible = "rockchip,rk3576-gmac", .data = &rk3576_ops },
{ .compatible = "rockchip,rk3588-gmac", .data = &rk3588_ops },
--
2.25.1