From: Jon Lin jon.lin@rock-chips.com
Add support for max_link_speed specified in the PCI DT binding.
Signed-off-by: Jon Lin jon.lin@rock-chips.com [eugen.hristev@collabora.com: port to latest API, set default correctly, align to 80 chars] Signed-off-by: Eugen Hristev eugen.hristev@collabora.com --- drivers/pci/pcie_dw_rockchip.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/pcie_dw_rockchip.c b/drivers/pci/pcie_dw_rockchip.c index ff121046604a..6a2a5e15646e 100644 --- a/drivers/pci/pcie_dw_rockchip.c +++ b/drivers/pci/pcie_dw_rockchip.c @@ -42,6 +42,7 @@ struct rk_pcie { struct clk_bulk clks; struct reset_ctl_bulk rsts; struct gpio_desc rst_gpio; + u32 gen; };
/* Parameters for the waiting for iATU enabled routine */ @@ -331,7 +332,7 @@ static int rockchip_pcie_init_port(struct udevice *dev) rk_pcie_writel_apb(priv, 0x0, 0xf00040); pcie_dw_setup_host(&priv->dw);
- ret = rk_pcie_link_up(priv, LINK_SPEED_GEN_3); + ret = rk_pcie_link_up(priv, priv->gen); if (ret < 0) goto err_link_up;
@@ -351,6 +352,7 @@ err_exit_phy: static int rockchip_pcie_parse_dt(struct udevice *dev) { struct rk_pcie *priv = dev_get_priv(dev); + u32 max_link_speed; int ret;
priv->dw.dbi_base = (void *)dev_read_addr_index(dev, 0); @@ -397,6 +399,13 @@ static int rockchip_pcie_parse_dt(struct udevice *dev) goto rockchip_pcie_parse_dt_err_phy_get_by_index; }
+ ret = ofnode_read_u32(dev_ofnode(dev), "max-link-speed", + &max_link_speed); + if (ret < 0 || max_link_speed > 4) + priv->gen = LINK_SPEED_GEN_3; + else + priv->gen = max_link_speed; + return 0;
rockchip_pcie_parse_dt_err_phy_get_by_index: