The vpcie*-supply properties are optional and these are absent on boards like the ROCKPro64 and Firefly RK3399 where the voltage is supplied by always-on regulators that are already enabled upon boot. Make these regulators optional and properly check their presence before attempting to enable them.
Makes PCIe work on un U-Boot on the boards mentioned above.
Signed-off-by: Mark Kettenis kettenis@openbsd.org --- drivers/pci/pcie_rockchip.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-)
diff --git a/drivers/pci/pcie_rockchip.c b/drivers/pci/pcie_rockchip.c index 82a8396e42..0edc2464a8 100644 --- a/drivers/pci/pcie_rockchip.c +++ b/drivers/pci/pcie_rockchip.c @@ -322,7 +322,7 @@ static int rockchip_pcie_set_vpcie(struct udevice *dev) struct rockchip_pcie *priv = dev_get_priv(dev); int ret;
- if (!IS_ERR(priv->vpcie3v3)) { + if (priv->vpcie3v3) { ret = regulator_set_enable(priv->vpcie3v3, true); if (ret) { dev_err(dev, "failed to enable vpcie3v3 (ret=%d)\n", @@ -331,24 +331,31 @@ static int rockchip_pcie_set_vpcie(struct udevice *dev) } }
- ret = regulator_set_enable(priv->vpcie1v8, true); - if (ret) { - dev_err(dev, "failed to enable vpcie1v8 (ret=%d)\n", ret); - goto err_disable_3v3; + if (priv->vpcie1v8) { + ret = regulator_set_enable(priv->vpcie1v8, true); + if (ret) { + dev_err(dev, "failed to enable vpcie1v8 (ret=%d)\n", + ret); + goto err_disable_3v3; + } }
- ret = regulator_set_enable(priv->vpcie0v9, true); - if (ret) { - dev_err(dev, "failed to enable vpcie0v9 (ret=%d)\n", ret); - goto err_disable_1v8; + if (priv->vpcie0v9) { + ret = regulator_set_enable(priv->vpcie0v9, true); + if (ret) { + dev_err(dev, "failed to enable vpcie0v9 (ret=%d)\n", + ret); + goto err_disable_1v8; + } }
return 0;
err_disable_1v8: - regulator_set_enable(priv->vpcie1v8, false); + if (priv->vpcie1v8) + regulator_set_enable(priv->vpcie1v8, false); err_disable_3v3: - if (!IS_ERR(priv->vpcie3v3)) + if (priv->vpcie3v3) regulator_set_enable(priv->vpcie3v3, false); return ret; } @@ -424,14 +431,14 @@ static int rockchip_pcie_parse_dt(struct udevice *dev)
ret = device_get_supply_regulator(dev, "vpcie1v8-supply", &priv->vpcie1v8); - if (ret) { + if (ret && ret != -ENOENT) { dev_err(dev, "failed to get vpcie1v8 supply (ret=%d)\n", ret); return ret; }
ret = device_get_supply_regulator(dev, "vpcie0v9-supply", &priv->vpcie0v9); - if (ret) { + if (ret && ret != -ENOENT) { dev_err(dev, "failed to get vpcie0v9 supply (ret=%d)\n", ret); return ret; }