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Date: Wed, 21 Apr 2021 17:34:09 -0300
From: Ezequiel Garcia <ezequiel@...labora.com>
To: netdev@...r.kernel.org, linux-rockchip@...ts.infradead.org
Cc: Jose Abreu <joabreu@...opsys.com>,
Heiko Stuebner <heiko@...ech.de>,
"David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Peter Geis <pgwipeout@...il.com>,
Kever Yang <kever.yang@...k-chips.com>,
David Wu <david.wu@...k-chips.com>, kernel@...labora.com,
Ezequiel Garcia <ezequiel@...labora.com>
Subject: [PATCH v2 3/3] net: stmmac: Add RK3566 SoC support
From: David Wu <david.wu@...k-chips.com>
Add constants and callback functions for the dwmac present
on RK3566 SoCs. As can be seen, the base structure
is the same, only registers and the bits in them moved slightly.
The dwmac IP core version v5.1, and so the compatible string
is expected to be:
compatible = "rockchip,rk3566-gmac", "snps,dwmac-4.20a";
Signed-off-by: David Wu <david.wu@...k-chips.com>
[Ezequiel: Separate rk3566-gmac support]
Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
---
.../bindings/net/rockchip-dwmac.txt | 1 +
.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 89 +++++++++++++++++++
2 files changed, 90 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
index 3b71da7e8742..3bd4bbcd6c65 100644
--- a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
+++ b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
@@ -12,6 +12,7 @@ Required properties:
"rockchip,rk3366-gmac": found on RK3366 SoCs
"rockchip,rk3368-gmac": found on RK3368 SoCs
"rockchip,rk3399-gmac": found on RK3399 SoCs
+ "rockchip,rk3566-gmac", "snps,dwmac-4.20a": found on RK3566 SoCs
"rockchip,rv1108-gmac": found on RV1108 SoCs
- reg: addresses and length of the register sets for the device.
- interrupts: Should contain the GMAC interrupts.
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index d2637d83899e..a8850bcd980f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -948,6 +948,94 @@ static const struct rk_gmac_ops rk3399_ops = {
.set_rmii_speed = rk3399_set_rmii_speed,
};
+#define RK3568_GRF_GMAC0_CON0 0x0380
+#define RK3568_GRF_GMAC0_CON1 0x0384
+#define RK3568_GRF_GMAC1_CON0 0x0388
+#define RK3568_GRF_GMAC1_CON1 0x038c
+
+/* RK3568_GRF_GMAC0_CON1 && RK3568_GRF_GMAC1_CON1 */
+#define RK3568_GMAC_PHY_INTF_SEL_RGMII \
+ (GRF_BIT(4) | GRF_CLR_BIT(5) | GRF_CLR_BIT(6))
+#define RK3568_GMAC_PHY_INTF_SEL_RMII \
+ (GRF_CLR_BIT(4) | GRF_CLR_BIT(5) | GRF_BIT(6))
+#define RK3568_GMAC_FLOW_CTRL GRF_BIT(3)
+#define RK3568_GMAC_FLOW_CTRL_CLR GRF_CLR_BIT(3)
+#define RK3568_GMAC_RXCLK_DLY_ENABLE GRF_BIT(1)
+#define RK3568_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(1)
+#define RK3568_GMAC_TXCLK_DLY_ENABLE GRF_BIT(0)
+#define RK3568_GMAC_TXCLK_DLY_DISABLE GRF_CLR_BIT(0)
+
+/* RK3568_GRF_GMAC0_CON0 && RK3568_GRF_GMAC1_CON0 */
+#define RK3568_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 8)
+#define RK3568_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
+
+static void rk3566_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, RK3568_GRF_GMAC1_CON1,
+ RK3568_GMAC_PHY_INTF_SEL_RGMII |
+ RK3568_GMAC_RXCLK_DLY_ENABLE |
+ RK3568_GMAC_TXCLK_DLY_ENABLE);
+
+ regmap_write(bsp_priv->grf, RK3568_GRF_GMAC1_CON0,
+ RK3568_GMAC_CLK_RX_DL_CFG(rx_delay) |
+ RK3568_GMAC_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rk3566_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, RK3568_GRF_GMAC1_CON1,
+ RK3568_GMAC_PHY_INTF_SEL_RMII);
+}
+
+static void rk3566_set_gmac_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 GMAC 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 rk3566_ops = {
+ .set_to_rgmii = rk3566_set_to_rgmii,
+ .set_to_rmii = rk3566_set_to_rmii,
+ .set_rgmii_speed = rk3566_set_gmac_speed,
+ .set_rmii_speed = rk3566_set_gmac_speed,
+};
+
#define RV1108_GRF_GMAC_CON0 0X0900
/* RV1108_GRF_GMAC_CON0 */
@@ -1512,6 +1600,7 @@ 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,rk3566-gmac", .data = &rk3566_ops },
{ .compatible = "rockchip,rv1108-gmac", .data = &rv1108_ops },
{ }
};
--
2.30.0
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