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https://github.com/brain-hackers/u-boot-brain
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793f2fd2dc
The GMAC in the RK3368 once again is identical to the incarnation in the RK3288 and the RK3399, except for where some of the configuration and control registers are located in the GRF. This adds the RK3368-specific logic necessary to reuse this driver. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
313 lines
8.1 KiB
C
313 lines
8.1 KiB
C
/*
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* (C) Copyright 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* Rockchip GMAC ethernet IP driver for U-Boot
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*/
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#include <common.h>
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#include <dm.h>
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#include <clk.h>
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#include <phy.h>
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#include <syscon.h>
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#include <asm/io.h>
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#include <asm/arch/periph.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/grf_rk3288.h>
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#include <asm/arch/grf_rk3368.h>
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#include <asm/arch/grf_rk3399.h>
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#include <dm/pinctrl.h>
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#include <dt-bindings/clock/rk3288-cru.h>
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#include "designware.h"
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Platform data for the gmac
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*
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* dw_eth_pdata: Required platform data for designware driver (must be first)
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*/
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struct gmac_rockchip_platdata {
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struct dw_eth_pdata dw_eth_pdata;
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int tx_delay;
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int rx_delay;
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};
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struct rk_gmac_ops {
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int (*fix_mac_speed)(struct dw_eth_dev *priv);
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void (*set_to_rgmii)(struct gmac_rockchip_platdata *pdata);
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};
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static int gmac_rockchip_ofdata_to_platdata(struct udevice *dev)
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{
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struct gmac_rockchip_platdata *pdata = dev_get_platdata(dev);
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/* Check the new naming-style first... */
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pdata->tx_delay = dev_read_u32_default(dev, "tx_delay", -ENOENT);
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pdata->rx_delay = dev_read_u32_default(dev, "rx_delay", -ENOENT);
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/* ... and fall back to the old naming style or default, if necessary */
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if (pdata->tx_delay == -ENOENT)
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pdata->tx_delay = dev_read_u32_default(dev, "tx-delay", 0x30);
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if (pdata->rx_delay == -ENOENT)
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pdata->rx_delay = dev_read_u32_default(dev, "rx-delay", 0x10);
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return designware_eth_ofdata_to_platdata(dev);
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}
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static int rk3288_gmac_fix_mac_speed(struct dw_eth_dev *priv)
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{
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struct rk3288_grf *grf;
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int clk;
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switch (priv->phydev->speed) {
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case 10:
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clk = RK3288_GMAC_CLK_SEL_2_5M;
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break;
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case 100:
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clk = RK3288_GMAC_CLK_SEL_25M;
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break;
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case 1000:
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clk = RK3288_GMAC_CLK_SEL_125M;
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break;
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default:
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debug("Unknown phy speed: %d\n", priv->phydev->speed);
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return -EINVAL;
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}
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grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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rk_clrsetreg(&grf->soc_con1, RK3288_GMAC_CLK_SEL_MASK, clk);
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return 0;
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}
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static int rk3368_gmac_fix_mac_speed(struct dw_eth_dev *priv)
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{
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struct rk3368_grf *grf;
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int clk;
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enum {
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RK3368_GMAC_CLK_SEL_2_5M = 2 << 4,
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RK3368_GMAC_CLK_SEL_25M = 3 << 4,
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RK3368_GMAC_CLK_SEL_125M = 0 << 4,
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RK3368_GMAC_CLK_SEL_MASK = GENMASK(5, 4),
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};
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switch (priv->phydev->speed) {
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case 10:
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clk = RK3368_GMAC_CLK_SEL_2_5M;
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break;
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case 100:
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clk = RK3368_GMAC_CLK_SEL_25M;
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break;
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case 1000:
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clk = RK3368_GMAC_CLK_SEL_125M;
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break;
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default:
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debug("Unknown phy speed: %d\n", priv->phydev->speed);
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return -EINVAL;
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}
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grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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rk_clrsetreg(&grf->soc_con15, RK3368_GMAC_CLK_SEL_MASK, clk);
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return 0;
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}
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static int rk3399_gmac_fix_mac_speed(struct dw_eth_dev *priv)
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{
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struct rk3399_grf_regs *grf;
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int clk;
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switch (priv->phydev->speed) {
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case 10:
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clk = RK3399_GMAC_CLK_SEL_2_5M;
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break;
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case 100:
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clk = RK3399_GMAC_CLK_SEL_25M;
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break;
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case 1000:
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clk = RK3399_GMAC_CLK_SEL_125M;
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break;
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default:
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debug("Unknown phy speed: %d\n", priv->phydev->speed);
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return -EINVAL;
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}
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grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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rk_clrsetreg(&grf->soc_con5, RK3399_GMAC_CLK_SEL_MASK, clk);
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return 0;
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}
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static void rk3288_gmac_set_to_rgmii(struct gmac_rockchip_platdata *pdata)
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{
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struct rk3288_grf *grf;
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grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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rk_clrsetreg(&grf->soc_con1,
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RK3288_RMII_MODE_MASK | RK3288_GMAC_PHY_INTF_SEL_MASK,
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RK3288_GMAC_PHY_INTF_SEL_RGMII);
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rk_clrsetreg(&grf->soc_con3,
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RK3288_RXCLK_DLY_ENA_GMAC_MASK |
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RK3288_TXCLK_DLY_ENA_GMAC_MASK |
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RK3288_CLK_RX_DL_CFG_GMAC_MASK |
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RK3288_CLK_TX_DL_CFG_GMAC_MASK,
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RK3288_RXCLK_DLY_ENA_GMAC_ENABLE |
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RK3288_TXCLK_DLY_ENA_GMAC_ENABLE |
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pdata->rx_delay << RK3288_CLK_RX_DL_CFG_GMAC_SHIFT |
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pdata->tx_delay << RK3288_CLK_TX_DL_CFG_GMAC_SHIFT);
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}
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static void rk3368_gmac_set_to_rgmii(struct gmac_rockchip_platdata *pdata)
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{
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struct rk3368_grf *grf;
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enum {
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RK3368_GMAC_PHY_INTF_SEL_RGMII = 1 << 9,
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RK3368_GMAC_PHY_INTF_SEL_MASK = GENMASK(11, 9),
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RK3368_RMII_MODE_MASK = BIT(6),
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RK3368_RMII_MODE = BIT(6),
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};
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enum {
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RK3368_RXCLK_DLY_ENA_GMAC_MASK = BIT(15),
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RK3368_RXCLK_DLY_ENA_GMAC_DISABLE = 0,
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RK3368_RXCLK_DLY_ENA_GMAC_ENABLE = BIT(15),
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RK3368_TXCLK_DLY_ENA_GMAC_MASK = BIT(7),
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RK3368_TXCLK_DLY_ENA_GMAC_DISABLE = 0,
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RK3368_TXCLK_DLY_ENA_GMAC_ENABLE = BIT(7),
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RK3368_CLK_RX_DL_CFG_GMAC_SHIFT = 8,
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RK3368_CLK_RX_DL_CFG_GMAC_MASK = GENMASK(14, 8),
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RK3368_CLK_TX_DL_CFG_GMAC_SHIFT = 0,
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RK3368_CLK_TX_DL_CFG_GMAC_MASK = GENMASK(6, 0),
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};
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grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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rk_clrsetreg(&grf->soc_con15,
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RK3368_RMII_MODE_MASK | RK3368_GMAC_PHY_INTF_SEL_MASK,
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RK3368_GMAC_PHY_INTF_SEL_RGMII);
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rk_clrsetreg(&grf->soc_con16,
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RK3368_RXCLK_DLY_ENA_GMAC_MASK |
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RK3368_TXCLK_DLY_ENA_GMAC_MASK |
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RK3368_CLK_RX_DL_CFG_GMAC_MASK |
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RK3368_CLK_TX_DL_CFG_GMAC_MASK,
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RK3368_RXCLK_DLY_ENA_GMAC_ENABLE |
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RK3368_TXCLK_DLY_ENA_GMAC_ENABLE |
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pdata->rx_delay << RK3368_CLK_RX_DL_CFG_GMAC_SHIFT |
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pdata->tx_delay << RK3368_CLK_TX_DL_CFG_GMAC_SHIFT);
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}
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static void rk3399_gmac_set_to_rgmii(struct gmac_rockchip_platdata *pdata)
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{
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struct rk3399_grf_regs *grf;
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grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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rk_clrsetreg(&grf->soc_con5,
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RK3399_GMAC_PHY_INTF_SEL_MASK,
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RK3399_GMAC_PHY_INTF_SEL_RGMII);
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rk_clrsetreg(&grf->soc_con6,
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RK3399_RXCLK_DLY_ENA_GMAC_MASK |
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RK3399_TXCLK_DLY_ENA_GMAC_MASK |
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RK3399_CLK_RX_DL_CFG_GMAC_MASK |
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RK3399_CLK_TX_DL_CFG_GMAC_MASK,
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RK3399_RXCLK_DLY_ENA_GMAC_ENABLE |
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RK3399_TXCLK_DLY_ENA_GMAC_ENABLE |
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pdata->rx_delay << RK3399_CLK_RX_DL_CFG_GMAC_SHIFT |
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pdata->tx_delay << RK3399_CLK_TX_DL_CFG_GMAC_SHIFT);
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}
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static int gmac_rockchip_probe(struct udevice *dev)
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{
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struct gmac_rockchip_platdata *pdata = dev_get_platdata(dev);
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struct rk_gmac_ops *ops =
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(struct rk_gmac_ops *)dev_get_driver_data(dev);
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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/* Since mac_clk is fed by an external clock we can use 0 here */
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ret = clk_set_rate(&clk, 0);
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if (ret)
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return ret;
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/* Set to RGMII mode */
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ops->set_to_rgmii(pdata);
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return designware_eth_probe(dev);
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}
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static int gmac_rockchip_eth_start(struct udevice *dev)
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{
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struct eth_pdata *pdata = dev_get_platdata(dev);
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struct dw_eth_dev *priv = dev_get_priv(dev);
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struct rk_gmac_ops *ops =
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(struct rk_gmac_ops *)dev_get_driver_data(dev);
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int ret;
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ret = designware_eth_init(priv, pdata->enetaddr);
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if (ret)
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return ret;
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ret = ops->fix_mac_speed(priv);
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if (ret)
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return ret;
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ret = designware_eth_enable(priv);
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if (ret)
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return ret;
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return 0;
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}
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const struct eth_ops gmac_rockchip_eth_ops = {
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.start = gmac_rockchip_eth_start,
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.send = designware_eth_send,
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.recv = designware_eth_recv,
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.free_pkt = designware_eth_free_pkt,
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.stop = designware_eth_stop,
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.write_hwaddr = designware_eth_write_hwaddr,
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};
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const struct rk_gmac_ops rk3288_gmac_ops = {
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.fix_mac_speed = rk3288_gmac_fix_mac_speed,
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.set_to_rgmii = rk3288_gmac_set_to_rgmii,
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};
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const struct rk_gmac_ops rk3368_gmac_ops = {
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.fix_mac_speed = rk3368_gmac_fix_mac_speed,
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.set_to_rgmii = rk3368_gmac_set_to_rgmii,
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};
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const struct rk_gmac_ops rk3399_gmac_ops = {
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.fix_mac_speed = rk3399_gmac_fix_mac_speed,
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.set_to_rgmii = rk3399_gmac_set_to_rgmii,
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};
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static const struct udevice_id rockchip_gmac_ids[] = {
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{ .compatible = "rockchip,rk3288-gmac",
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.data = (ulong)&rk3288_gmac_ops },
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{ .compatible = "rockchip,rk3368-gmac",
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.data = (ulong)&rk3368_gmac_ops },
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{ .compatible = "rockchip,rk3399-gmac",
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.data = (ulong)&rk3399_gmac_ops },
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{ }
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};
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U_BOOT_DRIVER(eth_gmac_rockchip) = {
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.name = "gmac_rockchip",
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.id = UCLASS_ETH,
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.of_match = rockchip_gmac_ids,
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.ofdata_to_platdata = gmac_rockchip_ofdata_to_platdata,
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.probe = gmac_rockchip_probe,
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.ops = &gmac_rockchip_eth_ops,
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.priv_auto_alloc_size = sizeof(struct dw_eth_dev),
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.platdata_auto_alloc_size = sizeof(struct gmac_rockchip_platdata),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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