diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci-imx6.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/pci-imx6.c b/drivers/pci/pci-imx6.c index 138b4ca8b3..85307bad3e 100644 --- a/drivers/pci/pci-imx6.c +++ b/drivers/pci/pci-imx6.c @@ -65,6 +65,7 @@ struct imx6_pcie { struct clk *pcie_bus; struct clk *pcie_phy; struct clk *pcie; + struct clk *pcie_aux; void __iomem *iomuxc_gpr; u32 controller_id; struct reset_control *pciephy_reset; @@ -299,8 +300,10 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) { + struct device_d *dev = imx6_pcie->pci->dev; u32 gpr1, gpr1x; unsigned int offset; + int ret; switch (imx6_pcie->drvdata->variant) { case IMX6QP: @@ -323,6 +326,12 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie) case IMX7D: break; case IMX8MQ: + ret = clk_enable(imx6_pcie->pcie_aux); + if (ret) { + dev_err(dev, "unable to enable pcie_aux clock\n"); + return ret; + } + offset = imx6_pcie_grp_offset(imx6_pcie); /* * Set the over ride low and enabled @@ -742,6 +751,13 @@ static int imx6_pcie_probe(struct device_d *dev) if (iores->start == IMX8MQ_PCIE2_BASE_ADDR) imx6_pcie->controller_id = 1; + imx6_pcie->pcie_aux = clk_get(dev, "pcie_aux"); + if (IS_ERR(imx6_pcie->pcie_aux)) { + dev_err(dev, + "pcie_aux clock source missing or invalid\n"); + return PTR_ERR(imx6_pcie->pcie_aux); + } + goto imx7d_init; case IMX7D: imx6_pcie->iomuxc_gpr = IOMEM(MX7_IOMUXC_GPR_BASE_ADDR); |