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Message-ID: <20250306221402.1704196-3-jonas@kwiboo.se>
Date: Thu, 6 Mar 2025 22:13:55 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Heiko Stuebner <heiko@...ech.de>,
Andrew Lunn <andrew+netdev@...n.ch>,
"David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: Yao Zi <ziyao@...root.org>,
linux-rockchip@...ts.infradead.org,
netdev@...r.kernel.org,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Jonas Karlman <jonas@...boo.se>,
David Wu <david.wu@...k-chips.com>,
linux-stm32@...md-mailman.stormreply.com
Subject: [PATCH 2/4] ethernet: stmmac: dwmac-rk: Add GMAC support for RK3528
From: David Wu <david.wu@...k-chips.com>
Rockchip RK3528 has two Ethernet controllers based on Synopsys DWC
Ethernet QoS IP.
Add initial support for the RK3528 variants.
Signed-off-by: David Wu <david.wu@...k-chips.com>
Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
This does not include power on/off support for the integrated PHY.
---
.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 132 ++++++++++++++++++
1 file changed, 132 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index ba1cd079adf2..0ae3ffacb794 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -830,6 +830,137 @@ static const struct rk_gmac_ops rk3399_ops = {
.set_rmii_speed = rk3399_set_rmii_speed,
};
+#define RK3528_VO_GRF_GMAC_CON 0x0018
+#define RK3528_VO_GRF_MACPHY_CON0 0x001c
+#define RK3528_VO_GRF_MACPHY_CON1 0x0020
+#define RK3528_VPU_GRF_GMAC_CON5 0x0018
+#define RK3528_VPU_GRF_GMAC_CON6 0x001c
+
+#define RK3528_GMAC_RXCLK_DLY_ENABLE GRF_BIT(15)
+#define RK3528_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(15)
+#define RK3528_GMAC_TXCLK_DLY_ENABLE GRF_BIT(14)
+#define RK3528_GMAC_TXCLK_DLY_DISABLE GRF_CLR_BIT(14)
+
+#define RK3528_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0xFF, 8)
+#define RK3528_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0xFF, 0)
+
+#define RK3528_GMAC0_PHY_INTF_SEL_RMII GRF_BIT(1)
+#define RK3528_GMAC1_PHY_INTF_SEL_RGMII GRF_CLR_BIT(8)
+#define RK3528_GMAC1_PHY_INTF_SEL_RMII GRF_BIT(8)
+
+#define RK3528_GMAC1_CLK_SELECT_CRU GRF_CLR_BIT(12)
+#define RK3528_GMAC1_CLK_SELECT_IO GRF_BIT(12)
+
+#define RK3528_GMAC0_CLK_RMII_DIV2 GRF_BIT(3)
+#define RK3528_GMAC0_CLK_RMII_DIV20 GRF_CLR_BIT(3)
+#define RK3528_GMAC1_CLK_RMII_DIV2 GRF_BIT(10)
+#define RK3528_GMAC1_CLK_RMII_DIV20 GRF_CLR_BIT(10)
+
+#define RK3528_GMAC1_CLK_RGMII_DIV1 (GRF_CLR_BIT(11) | GRF_CLR_BIT(10))
+#define RK3528_GMAC1_CLK_RGMII_DIV5 (GRF_BIT(11) | GRF_BIT(10))
+#define RK3528_GMAC1_CLK_RGMII_DIV50 (GRF_BIT(11) | GRF_CLR_BIT(10))
+
+#define RK3528_GMAC0_CLK_RMII_GATE GRF_BIT(2)
+#define RK3528_GMAC0_CLK_RMII_NOGATE GRF_CLR_BIT(2)
+#define RK3528_GMAC1_CLK_RMII_GATE GRF_BIT(9)
+#define RK3528_GMAC1_CLK_RMII_NOGATE GRF_CLR_BIT(9)
+
+static void rk3528_set_to_rgmii(struct rk_priv_data *bsp_priv,
+ int tx_delay, int rx_delay)
+{
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5,
+ RK3528_GMAC1_PHY_INTF_SEL_RGMII);
+
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5,
+ DELAY_ENABLE(RK3528, tx_delay, rx_delay));
+
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON6,
+ RK3528_GMAC_CLK_RX_DL_CFG(rx_delay) |
+ RK3528_GMAC_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rk3528_set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+ if (bsp_priv->id == 1)
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5,
+ RK3528_GMAC1_PHY_INTF_SEL_RMII);
+ else
+ regmap_write(bsp_priv->grf, RK3528_VO_GRF_GMAC_CON,
+ RK3528_GMAC0_PHY_INTF_SEL_RMII |
+ RK3528_GMAC0_CLK_RMII_DIV2);
+}
+
+static void rk3528_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+
+ if (speed == 10)
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5,
+ RK3528_GMAC1_CLK_RGMII_DIV50);
+ else if (speed == 100)
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5,
+ RK3528_GMAC1_CLK_RGMII_DIV5);
+ else if (speed == 1000)
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5,
+ RK3528_GMAC1_CLK_RGMII_DIV1);
+ else
+ dev_err(dev, "unknown speed value for RGMII! speed=%d", speed);
+}
+
+static void rk3528_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg, val;
+
+ if (speed == 10)
+ val = bsp_priv->id == 1 ? RK3528_GMAC1_CLK_RMII_DIV20 :
+ RK3528_GMAC0_CLK_RMII_DIV20;
+ else if (speed == 100)
+ val = bsp_priv->id == 1 ? RK3528_GMAC1_CLK_RMII_DIV2 :
+ RK3528_GMAC0_CLK_RMII_DIV2;
+ else {
+ dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
+ return;
+ }
+
+ reg = bsp_priv->id == 1 ? RK3528_VPU_GRF_GMAC_CON5 :
+ RK3528_VO_GRF_GMAC_CON;
+
+ regmap_write(bsp_priv->grf, reg, val);
+}
+
+static void rk3528_set_clock_selection(struct rk_priv_data *bsp_priv,
+ bool input, bool enable)
+{
+ unsigned int val;
+
+ if (bsp_priv->id == 1) {
+ val = input ? RK3528_GMAC1_CLK_SELECT_IO :
+ RK3528_GMAC1_CLK_SELECT_CRU;
+ val |= enable ? RK3528_GMAC1_CLK_RMII_NOGATE :
+ RK3528_GMAC1_CLK_RMII_GATE;
+ regmap_write(bsp_priv->grf, RK3528_VPU_GRF_GMAC_CON5, val);
+ } else {
+ val = enable ? RK3528_GMAC0_CLK_RMII_NOGATE :
+ RK3528_GMAC0_CLK_RMII_GATE;
+ regmap_write(bsp_priv->grf, RK3528_VO_GRF_GMAC_CON, val);
+ }
+}
+
+static const struct rk_gmac_ops rk3528_ops = {
+ .set_to_rgmii = rk3528_set_to_rgmii,
+ .set_to_rmii = rk3528_set_to_rmii,
+ .set_rgmii_speed = rk3528_set_rgmii_speed,
+ .set_rmii_speed = rk3528_set_rmii_speed,
+ .set_clock_selection = rk3528_set_clock_selection,
+ .regs_valid = true,
+ .regs = {
+ 0xffbd0000, /* gmac0 */
+ 0xffbe0000, /* gmac1 */
+ 0x0, /* sentinel */
+ },
+};
+
#define RK3568_GRF_GMAC0_CON0 0x0380
#define RK3568_GRF_GMAC0_CON1 0x0384
#define RK3568_GRF_GMAC1_CON0 0x0388
@@ -1816,6 +1947,7 @@ 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,rk3528-gmac", .data = &rk3528_ops },
{ .compatible = "rockchip,rk3568-gmac", .data = &rk3568_ops },
{ .compatible = "rockchip,rk3576-gmac", .data = &rk3576_ops },
{ .compatible = "rockchip,rk3588-gmac", .data = &rk3588_ops },
--
2.48.1
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