diff options
| author | Richard Zhu <hongxing.zhu@nxp.com> | 2016-09-02 16:42:26 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | fdc68786f13cd94395780980d24a87fa7c5b486d (patch) | |
| tree | fb94f02e7b5a4c5a285bcd95a9544447e1ae035e /drivers/pci/host/pci-imx6.c | |
| parent | 3ec4732ae11b8f919412a89b0376be2bcef4a4ce (diff) | |
MLK-13178-2 pci: imx6: add one regulator for ext osc
On imx6qp sabresd rev b board, there is a standalone
external oscilator, used to provided the clks for
imx6qp pcie.
Add one regulator into pcie node, let the ext osc work.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Diffstat (limited to 'drivers/pci/host/pci-imx6.c')
| -rw-r--r-- | drivers/pci/host/pci-imx6.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c index 9aa57ec30005..c76e631024e6 100644 --- a/drivers/pci/host/pci-imx6.c +++ b/drivers/pci/host/pci-imx6.c @@ -74,6 +74,7 @@ struct imx6_pcie { int link_gen; struct regmap *reg_src; struct regulator *pcie_phy_regulator; + struct regulator *pcie_bus_regulator; }; /* PCIe Root Complex registers (memory-mapped) */ @@ -512,6 +513,12 @@ static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) IMX6SX_GPR12_PCIE_RX_EQ_2); } + if (imx6_pcie->pcie_bus_regulator != NULL) { + ret = regulator_enable(imx6_pcie->pcie_bus_regulator); + if (ret) + dev_err(imx6_pcie->pp.dev, "failed to enable pcie regulator.\n"); + } + if (imx6_pcie->variant != IMX7D) { regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX6Q_GPR12_PCIE_CTL_2, 0 << 10); @@ -571,6 +578,8 @@ static int imx6_pcie_wait_for_link(struct imx6_pcie *imx6_pcie) release_bus_freq(BUS_FREQ_HIGH); if (imx6_pcie->pcie_phy_regulator != NULL) regulator_disable(imx6_pcie->pcie_phy_regulator); + if (imx6_pcie->pcie_bus_regulator != NULL) + regulator_disable(imx6_pcie->pcie_bus_regulator); } return -ETIMEDOUT; @@ -1000,6 +1009,8 @@ static int pci_imx_suspend_noirq(struct device *dev) /* Power down PCIe PHY. */ if (imx6_pcie->pcie_phy_regulator != NULL) regulator_disable(imx6_pcie->pcie_phy_regulator); + if (imx6_pcie->pcie_bus_regulator != NULL) + regulator_disable(imx6_pcie->pcie_bus_regulator); if (gpio_is_valid(imx6_pcie->power_on_gpio)) gpio_set_value_cansleep(imx6_pcie->power_on_gpio, 0); } else { @@ -1185,6 +1196,11 @@ static int __init imx6_pcie_probe(struct platform_device *pdev) } } + imx6_pcie->pcie_bus_regulator = devm_regulator_get(pp->dev, + "pcie-bus"); + if (IS_ERR(imx6_pcie->pcie_bus_regulator)) + imx6_pcie->pcie_bus_regulator = NULL; + /* Grab GPR config register range */ if (imx6_pcie->variant == IMX7D) { imx6_pcie->iomuxc_gpr = |