RK3566上调试JL2101 1000M PHY
2024-05-11 02:36:14
JL2101 是一颗和Realtek Rtl8211F pin to pin 的国产1000M PHY IC
由于他和RTL8211F 管脚和供电电压一致，所以我们一开始按照RK的建议直接用RK RTL8211F 的配置进行编译：
RK3566 和RK3568 等IC 需要注意domain 工作电压配置，按照实际硬件配置，软件上做相应的电压配置，如果配置错误可能有该组电压域VDDIO 失效的可能性：
PMUIO2 Supply Power Voltage1:3300000
VCCIO1 Supply Power Voltage1:3300000
VCCIO3 Supply Power Voltage1:3300000
VCCIO4 Supply Power Voltage1:1800000
VCCIO5 Supply Power Voltage1:3300000
VCCIO6 Supply Power Voltage1:1800000
VCCIO7 Supply Power Voltage1:3300000kernel$ vi drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
1.走Linux通用驱动，初始化阶段硬复位或软复位都会有DMA报错，使PHY 进入Power down。
使用RC上电复位跳过初始化阶段的设置，可正常启动。
解决方案为：在初始化DMA前加2s延时，等待PHY的RX clock ready后再初始化DMA
修改代码kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_main.cstatic int stmmac_open(struct net_device *dev)
{struct stmmac_priv *priv = netdev_priv(dev);u32 chan;int ret;if (priv->hw->pcs != STMMAC_PCS_RGMII &&priv->hw->pcs != STMMAC_PCS_TBI &&priv->hw->pcs != STMMAC_PCS_RTBI) {ret = stmmac_init_phy(dev);if (ret) {netdev_err(priv->dev,"%s: Cannot attach to PHY (error: %d)\n",__func__, ret);return ret;}}/* Extra statistics */memset(&priv->xstats, 0, sizeof(struct stmmac_extra_stats));priv->xstats.threshold = tc;priv->dma_buf_sz = STMMAC_ALIGN(buf_sz);priv->rx_copybreak = STMMAC_RX_COPYBREAK;ret = alloc_dma_desc_resources(priv);if (ret < 0) {netdev_err(priv->dev, "%s: DMA descriptors allocation failed\n",__func__);goto dma_desc_error;}ret = init_dma_desc_rings(dev, GFP_KERNEL);if (ret < 0) {netdev_err(priv->dev, "%s: DMA descriptors initialization failed\n",__func__);goto init_error;}
+#if 1
+//#ifdef CONFIG_JLSEMI_PHY
+ printk("sam -------bootup add 2s delay time.\n");
+//sam jiang loged
+ mdelay(2500);
+#endifret = stmmac_hw_setup(dev, true);if (ret < 0) {netdev_err(priv->dev, "%s: Hw setup failed\n", __func__);goto init_error;}stmmac_init_tx_coalesce(priv);int stmmac_resume(struct device *dev)
{struct net_device *ndev = dev_get_drvdata(dev);struct stmmac_priv *priv = netdev_priv(ndev);if (!netif_running(ndev))return 0;/* Power Down bit, into the PM register, is cleared* automatically as soon as a magic packet or a Wake-up frame* is received. Anyway, it's better to manually clear* this bit because it can generate problems while resuming* from another devices (e.g. serial console).*/if (device_may_wakeup(priv->device)) {mutex_lock(&priv->lock);stmmac_pmt(priv, priv->hw, 0);mutex_unlock(&priv->lock);priv->irq_wake = 0;} else {pinctrl_pm_select_default_state(priv->device);/* enable the clk previously disabled */clk_prepare_enable(priv->plat->stmmac_clk);clk_prepare_enable(priv->plat->pclk);if (priv->plat->clk_ptp_ref && IS_ENABLED(CONFIG_STMMAC_PTP))clk_prepare_enable(priv->plat->clk_ptp_ref);/* reset the phy so that it's ready */if (priv->mii)stmmac_mdio_reset(priv->mii);}mutex_lock(&priv->lock);stmmac_reset_queues_param(priv);stmmac_free_tx_skbufs(priv);stmmac_clear_descriptors(priv);
+ #if 1
+// #ifdef CONFIG_JLSEMI_PHY
+ printk("sam -------resume add 2s delay time.\n");
+ //sam jiang loged
+ mdelay(2000);
+ #endifstmmac_hw_setup(ndev, false);stmmac_init_tx_coalesce(priv);stmmac_set_rx_mode(ndev);stmmac_enable_all_queues(priv);netif_device_attach(ndev);-------------------------------------------------------------------------------------GMAC1配置为 RGMII Crystal 25M for PHY, PLL output 125M for TX_CLK&gmac1 {
phy-mode = "rgmii";
clock_in_out = "output";
snps,reset-gpio = <&gpio2 RK_PD1 GPIO_ACTIVE_LOW>;
snps,reset-active-low;
/* Reset time is 20ms, 100ms for rtl8211f */
snps,reset-delays-us = <0 20000 100000>;
assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>;
assigned-clock-rates = <0>, <125000000>;
pinctrl-names = "default";
pinctrl-0 = <&gmac1m0_miim
&gmac1m0_tx_bus2
&gmac1m0_rx_bus2
&gmac1m0_rgmii_clk
&gmac1m0_rgmii_bus>;
tx_delay = <0x4f>;
rx_delay = <0x26>;
phy-handle = <&rgmii_phy1>;
status = "okay";
};
&mdio1 {
rgmii_phy1: phy@0 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <0x0>;
};
};修改kernel/arch/arm64/boot/dts/rockchip/rk3566-box-demo-v10.dtsi+/*
-&gmac1 {
- phy-mode = "rgmii";
- clock_in_out = "input";
-
- snps,reset-gpio = <&gpio4 RK_PC2 GPIO_ACTIVE_LOW>;
- snps,reset-active-low;
- //Reset time is 20ms, 100ms for rtl8211f
- snps,reset-delays-us = <0 20000 100000>;- assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
- assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>, <&gmac1_clkin>;
-
- assigned-clock-rates = <0>, <125000000>;
- pinctrl-names = "default";
- pinctrl-0 = <&gmac1m1_miim
- &gmac1m1_tx_bus2
- &gmac1m1_rx_bus2
- &gmac1m1_rgmii_clk
- &gmac1m1_rgmii_bus
- &gmac1m1_clkinout>;
-
- tx_delay = <0x4b>;
- rx_delay = <0x2b>;
-
- phy-handle = <&rgmii_phy1>;
- status = "okay";
-};
+*/+&gmac1 {
+ phy-mode = "rgmii";
+ clock_in_out = "output";
+ snps,reset-gpio = <&gpio4 RK_PC2 GPIO_ACTIVE_LOW>;
+ snps,reset-active-low;
+ /* Reset time is 20ms, 100ms for rtl8211f */
+ snps,reset-delays-us = <0 100000 200000>;
+ assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
+ assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>;
+ assigned-clock-rates = <0>, <125000000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&gmac1m1_miim
+ &gmac1m1_tx_bus2
+ &gmac1m1_rx_bus2
+ &gmac1m1_rgmii_clk
+ &gmac1m1_rgmii_bus>;
+ tx_delay = <0x4b>;
+ rx_delay = <0x26>;
+ phy-handle = <&rgmii_phy1>;
+ status = "okay";
+};修改后发现有时候初始化的时候 phy reset 失败，我们将Phy reset 的时间加长
snps,reset-delays-us = <0 100000 200000>;
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