diff options
Diffstat (limited to 'drivers/pci/pcie_rockchip_phy.c')
| -rw-r--r-- | drivers/pci/pcie_rockchip_phy.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/drivers/pci/pcie_rockchip_phy.c b/drivers/pci/pcie_rockchip_phy.c deleted file mode 100644 index 47f5d6c7e3..0000000000 --- a/drivers/pci/pcie_rockchip_phy.c +++ /dev/null @@ -1,205 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Rockchip PCIe PHY driver - * - * Copyright (c) 2016 Rockchip, Inc. - * Copyright (c) 2020 Amarula Solutions(India) - */ - -#include <common.h> -#include <clk.h> -#include <dm.h> -#include <dm/device_compat.h> -#include <reset.h> -#include <syscon.h> -#include <asm/gpio.h> -#include <asm/io.h> -#include <linux/iopoll.h> -#include <asm/arch-rockchip/clock.h> - -#include "pcie_rockchip.h" - -DECLARE_GLOBAL_DATA_PTR; - -static void phy_wr_cfg(struct rockchip_pcie_phy *phy, u32 addr, u32 data) -{ - u32 reg; - - reg = HIWORD_UPDATE_MASK(data, PHY_CFG_DATA_MASK, PHY_CFG_DATA_SHIFT); - reg |= HIWORD_UPDATE_MASK(addr, PHY_CFG_ADDR_MASK, PHY_CFG_ADDR_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_CONF); - - udelay(1); - - reg = HIWORD_UPDATE_MASK(PHY_CFG_WR_ENABLE, - PHY_CFG_WR_MASK, - PHY_CFG_WR_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_CONF); - - udelay(1); - - reg = HIWORD_UPDATE_MASK(PHY_CFG_WR_DISABLE, - PHY_CFG_WR_MASK, - PHY_CFG_WR_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_CONF); -} - -static int rockchip_pcie_phy_power_on(struct rockchip_pcie_phy *phy) -{ - int ret = 0; - u32 reg, status; - - ret = reset_deassert(&phy->phy_rst); - if (ret) { - dev_err(dev, "failed to assert phy reset\n"); - return ret; - } - - reg = HIWORD_UPDATE_MASK(PHY_CFG_PLL_LOCK, - PHY_CFG_ADDR_MASK, - PHY_CFG_ADDR_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_CONF); - - reg = HIWORD_UPDATE_MASK(!PHY_LANE_IDLE_OFF, - PHY_LANE_IDLE_MASK, - PHY_LANE_IDLE_A_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_LANEOFF); - - ret = -EINVAL; - ret = readl_poll_sleep_timeout(phy->reg_base + PCIE_PHY_STATUS, - status, - status & PHY_PLL_LOCKED, - 20 * 1000, - 50); - if (ret) { - dev_err(&phy->dev, "pll lock timeout!\n"); - goto err_pll_lock; - } - - phy_wr_cfg(phy, PHY_CFG_CLK_TEST, PHY_CFG_SEPE_RATE); - phy_wr_cfg(phy, PHY_CFG_CLK_SCC, PHY_CFG_PLL_100M); - - ret = -ETIMEDOUT; - ret = readl_poll_sleep_timeout(phy->reg_base + PCIE_PHY_STATUS, - status, - !(status & PHY_PLL_OUTPUT), - 20 * 1000, - 50); - if (ret) { - dev_err(&phy->dev, "pll output enable timeout!\n"); - goto err_pll_lock; - } - - reg = HIWORD_UPDATE_MASK(PHY_CFG_PLL_LOCK, - PHY_CFG_ADDR_MASK, - PHY_CFG_ADDR_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_CONF); - - ret = -EINVAL; - ret = readl_poll_sleep_timeout(phy->reg_base + PCIE_PHY_STATUS, - status, - status & PHY_PLL_LOCKED, - 20 * 1000, - 50); - if (ret) { - dev_err(&phy->dev, "pll relock timeout!\n"); - goto err_pll_lock; - } - - return 0; - -err_pll_lock: - reset_assert(&phy->phy_rst); - return ret; -} - -static int rockchip_pcie_phy_power_off(struct rockchip_pcie_phy *phy) -{ - int ret; - u32 reg; - - reg = HIWORD_UPDATE_MASK(PHY_LANE_IDLE_OFF, - PHY_LANE_IDLE_MASK, - PHY_LANE_IDLE_A_SHIFT); - writel(reg, phy->reg_base + PCIE_PHY_LANEOFF); - - ret = reset_assert(&phy->phy_rst); - if (ret) { - dev_err(dev, "failed to assert phy reset\n"); - return ret; - } - - return 0; -} - -static int rockchip_pcie_phy_init(struct rockchip_pcie_phy *phy) -{ - int ret; - - ret = clk_enable(&phy->refclk); - if (ret) { - dev_err(dev, "failed to enable refclk clock\n"); - return ret; - } - - ret = reset_assert(&phy->phy_rst); - if (ret) { - dev_err(dev, "failed to assert phy reset\n"); - goto err_reset; - } - - return 0; - -err_reset: - clk_disable(&phy->refclk); - return ret; -} - -static int rockchip_pcie_phy_exit(struct rockchip_pcie_phy *phy) -{ - clk_disable(&phy->refclk); - - return 0; -} - -static struct rockchip_pcie_phy_ops pcie_phy_ops = { - .init = rockchip_pcie_phy_init, - .power_on = rockchip_pcie_phy_power_on, - .power_off = rockchip_pcie_phy_power_off, - .exit = rockchip_pcie_phy_exit, -}; - -int rockchip_pcie_phy_get(struct udevice *dev) -{ - struct rockchip_pcie *priv = dev_get_priv(dev); - struct rockchip_pcie_phy *phy_priv = &priv->rk_phy; - ofnode phy_node; - u32 phandle; - int ret; - - phandle = dev_read_u32_default(dev, "phys", 0); - phy_node = ofnode_get_by_phandle(phandle); - if (!ofnode_valid(phy_node)) { - dev_err(dev, "failed to found pcie-phy\n"); - return -ENODEV; - } - - phy_priv->reg_base = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); - - ret = clk_get_by_index_nodev(phy_node, 0, &phy_priv->refclk); - if (ret) { - dev_err(dev, "failed to get refclk clock phandle\n"); - return ret; - } - - ret = reset_get_by_index_nodev(phy_node, 0, &phy_priv->phy_rst); - if (ret) { - dev_err(dev, "failed to get phy reset phandle\n"); - return ret; - } - - phy_priv->ops = &pcie_phy_ops; - priv->phy = phy_priv; - - return 0; -} |