korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-19 00:54:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

PCI: imx6: Mark PHY functions as i.MX6 specific

Browse Source 
PCIe PHY IP block on i.MX7D differs from the one used on i.MX6 family,
so none of the code in the current implementation of
imx6_setup_phy_mpll() or imx6_pcie_reset_phy() is applicable.

Introduce IMX6_PCIE_FLAG_IMX6_PHY and check for it in the aforementioned
functions to make sure they are only executed on appropriate PCIe IP
variants.

Tested-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
[lorenzo.pieralisi@arm.com: updated log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
This commit is contained in:
Andrey Smirnov 2019-02-01 16:15:21 -08:00 committed by Lorenzo Pieralisi
parent e8e4d4e957
commit 2f532d07f0
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/pci/controller/dwc/pci-imx6.c
View File

@ -41,8 +41,11 @@ enum imx6_pcie_variants {
IMX7D,
};
#define IMX6_PCIE_FLAG_IMX6_PHY BIT(0)
struct imx6_pcie_drvdata {
enum imx6_pcie_variants variant;
u32 flags;
};
struct imx6_pcie {
@ -255,6 +258,9 @@ static void imx6_pcie_reset_phy(struct imx6_pcie *imx6_pcie)
{
u32 tmp;
if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY))
return;
pcie_phy_read(imx6_pcie, PHY_RX_OVRD_IN_LO, &tmp);
tmp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN |
PHY_RX_OVRD_IN_LO_RX_PLL_EN);
@ -572,6 +578,9 @@ static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie)
int mult, div;
u32 val;
if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_IMX6_PHY))
return 0;
switch (phy_rate) {
case 125000000:
/*
@ -1090,12 +1099,15 @@ static void imx6_pcie_shutdown(struct platform_device *pdev)
static const struct imx6_pcie_drvdata drvdata[] = {
[IMX6Q] = {
.variant = IMX6Q,
.flags = IMX6_PCIE_FLAG_IMX6_PHY,
},
[IMX6SX] = {
.variant = IMX6SX,
.flags = IMX6_PCIE_FLAG_IMX6_PHY,
},
[IMX6QP] = {
.variant = IMX6QP,
.flags = IMX6_PCIE_FLAG_IMX6_PHY,
},
[IMX7D] = {
.variant = IMX7D,