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Message-Id: <20250418095114.271562-2-kever.yang@rock-chips.com>
Date: Fri, 18 Apr 2025 17:51:13 +0800
From: Kever Yang <kever.yang@...k-chips.com>
To: heiko@...ech.de
Cc: linux-rockchip@...ts.infradead.org,
David Wu <david.wu@...k-chips.com>,
Kever Yang <kever.yang@...k-chips.com>,
linux-arm-kernel@...ts.infradead.org,
Jonas Karlman <jonas@...boo.se>,
"Jan Petrous (OSS)" <jan.petrous@....nxp.com>,
netdev@...r.kernel.org,
Detlev Casanova <detlev.casanova@...labora.com>,
linux-kernel@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Andrew Lunn <andrew+netdev@...n.ch>,
Paolo Abeni <pabeni@...hat.com>,
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Chen-Yu Tsai <wens@...e.org>,
linux-stm32@...md-mailman.stormreply.com,
Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH v3 2/3] ethernet: stmmac: dwmac-rk: Add gmac support for rk3562
From: David Wu <david.wu@...k-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@...k-chips.com>
Signed-off-by: Kever Yang <kever.yang@...k-chips.com>
---
Changes in v3:
- remove unreadable MACRO;
- use two function for rmii and rgmii speed set;
- don't check grf and php_grf in function call;
- rebase on v6.15-rc1
Changes in v2:
- Collect review tag
.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 190 ++++++++++++++++++
1 file changed, 190 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 700858ff6f7c..82174054644a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -2,6 +2,7 @@
/**
* DOC: dwmac-rk.c - Rockchip RK3288 DWMAC specific glue layer
*
+ * Copyright (c) 2014 Rockchip Electronics Co., Ltd.
* Copyright (C) 2014 Chen-Zhi (Roger Chen)
*
* Chen-Zhi (Roger Chen) <roger.chen@...k-chips.com>
@@ -1048,6 +1049,194 @@ static const struct rk_gmac_ops rk3528_ops = {
},
};
+/* 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)
+{
+ 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,
+ RK3562_GMAC_CLK_RX_DL_CFG(rx_delay) |
+ RK3562_GMAC_CLK_TX_DL_CFG(tx_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,
+ RK3562_GMAC_CLK_RX_DL_CFG(rx_delay) |
+ RK3562_GMAC_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rk3562_set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+ if (!bsp_priv->id)
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC0_CLK_RMII_MODE);
+}
+
+static void rk3562_set_gmac_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int val = 0;
+
+ switch (speed) {
+ case 10:
+ val = RK3562_GMAC0_CLK_RGMII_DIV50;
+ break;
+ case 100:
+ val = RK3562_GMAC0_CLK_RGMII_DIV5;
+ break;
+ case 1000:
+ val = RK3562_GMAC0_CLK_RGMII_DIV1;
+ break;
+ default:
+ goto err;
+ }
+
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0, val);
+ return;
+err:
+ dev_err(dev, "unknown speed value for GMAC speed=%d", speed);
+}
+
+static void rk3562_set_gmac_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int val = 0, offset;
+
+ switch (speed) {
+ case 10:
+ if (bsp_priv->id == 1) {
+ val = RK3562_GMAC1_CLK_RMII_DIV20;
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC1_RMII_SPEED10);
+ } else {
+ val = RK3562_GMAC0_CLK_RMII_DIV20;
+ }
+ break;
+ case 100:
+ if (bsp_priv->id == 1) {
+ val = RK3562_GMAC1_CLK_RMII_DIV2;
+ regmap_write(bsp_priv->grf, RK3562_GRF_SYS_SOC_CON0,
+ RK3562_GMAC1_RMII_SPEED100);
+ } else {
+ val = RK3562_GMAC0_CLK_RMII_DIV2;
+ }
+ break;
+ default:
+ goto err;
+ }
+
+ offset = (bsp_priv->id == 1) ? 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_rgmii_speed,
+ .set_rmii_speed = rk3562_set_gmac_rmii_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
@@ -1996,6 +2185,7 @@ static const struct of_device_id rk_gmac_dwmac_match[] = {
{ .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
{ .compatible = "rockchip,rk3399-gmac", .data = &rk3399_ops },
{ .compatible = "rockchip,rk3528-gmac", .data = &rk3528_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
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