diff options
| author | Mason Huo <mason.huo@starfivetech.com> | 2023-09-08 13:30:59 +0300 |
|---|---|---|
| committer | Hal Feng <hal.feng@starfivetech.com> | 2023-11-29 05:54:38 +0300 |
| commit | 10e12b90654622997c2564b956fefc824b4bc3c5 (patch) | |
| tree | 978b02977898b119383cd608cd21a65839781783 | |
| parent | 4542b17102eac99de0eb8801392dfe57c30225d0 (diff) | |
| download | u-boot-10e12b90654622997c2564b956fefc824b4bc3c5.tar.xz | |
pci: Add external gpio control for sideband signal
For the devkit board, PCIe sideband signals
are controled by external gpios, use gpio
direct control instead of pinctrl.
Signed-off-by: Mason Huo <mason.huo@starfivetech.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
| -rw-r--r-- | drivers/pci/pcie_starfive.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/drivers/pci/pcie_starfive.c b/drivers/pci/pcie_starfive.c index d02cffe9d4..d8de9a5997 100644 --- a/drivers/pci/pcie_starfive.c +++ b/drivers/pci/pcie_starfive.c @@ -103,6 +103,8 @@ struct starfive_pcie { int atr_table_num; int first_busno; + struct gpio_desc *power_gpio; + struct gpio_desc *reset_gpio; }; static int starfive_pcie_addr_valid(pci_dev_t bdf, int first_busno) @@ -371,22 +373,32 @@ static int starfive_pcie_init_port(struct udevice *dev) goto err_deassert_clk; } -#if CONFIG_IS_ENABLED(TARGET_STARFIVE_EVB) +#if CONFIG_IS_ENABLED(TARGET_STARFIVE_EVB) || CONFIG_IS_ENABLED(TARGET_STARFIVE_DEVKITS) ret = pinctrl_select_state(dev, "power-active"); if (ret) { - dev_err(dev, "Set power-acvtive pinctrl failed: %d\n", ret); - goto err_deassert_reset; + priv->power_gpio = + devm_gpiod_get_optional(dev, "power", GPIOD_IS_OUT); + if (IS_ERR(priv->power_gpio)) { + dev_err(dev, "Get power-acvtive gpio failed: %d\n", ret); + goto err_deassert_reset; + } + dm_gpio_set_value(priv->power_gpio, 1); } #endif ret = pinctrl_select_state(dev, "perst-active"); if (ret) { - dev_err(dev, "Set perst-active pinctrl failed: %d\n", ret); -#if CONFIG_IS_ENABLED(TARGET_STARFIVE_EVB) - goto err_release_power_pin; + priv->reset_gpio = + devm_gpiod_get_optional(dev, "reset", GPIOD_IS_OUT); + if (IS_ERR(priv->reset_gpio)) { + dev_err(dev, "Set perst-active gpio failed: %d\n", ret); +#if CONFIG_IS_ENABLED(TARGET_STARFIVE_EVB) || CONFIG_IS_ENABLED(TARGET_STARFIVE_DEVKITS) + goto err_release_power_pin; #else - goto err_deassert_reset; + goto err_deassert_reset; #endif + } + dm_gpio_set_value(priv->reset_gpio, 1); } /* Disable physical functions except #0 */ @@ -447,13 +459,17 @@ static int starfive_pcie_init_port(struct udevice *dev) mdelay(100); ret = pinctrl_select_state(dev, "perst-default"); if (ret) { - dev_err(dev, "Set perst-default pinctrl failed: %d\n", ret); + if (priv->reset_gpio) { + dm_gpio_set_value(priv->reset_gpio, 0); + return 0; + } else + dev_err(dev, "Set perst-default pinctrl failed: %d\n", ret); return ret; } return 0; -#if CONFIG_IS_ENABLED(TARGET_STARFIVE_EVB) +#if CONFIG_IS_ENABLED(TARGET_STARFIVE_EVB) || CONFIG_IS_ENABLED(TARGET_STARFIVE_DEVKITS) err_release_power_pin: pinctrl_select_state(dev, "power-default"); #endif |