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PCI: imx6: Convert DIRECT_SPEED_CHANGE quirk code to use a flag 

Both i.MX7D and i.MX8MQ have the same behaviour when it comes to
clearing DIRECT_SPEED_CHANGE bit when no speed change occurs, so to
handle variants correctly add a flag instead of checking the IP block
variant.

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 16:15:22 -08:00 committed by Lorenzo Pieralisi
parent 2f532d07f0
commit 4c458bb347
1 changed files with 9 additions and 4 deletions
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13
drivers/pci/controller/dwc/pci-imx6.c
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@ -42,6 +42,7 @@ enum imx6_pcie_variants {
};
#define IMX6_PCIE_FLAG_IMX6_PHY BIT(0)
#define IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE BIT(1)
struct imx6_pcie_drvdata {
enum imx6_pcie_variants variant;
@ -710,7 +711,8 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie)
tmp |= PORT_LOGIC_SPEED_CHANGE;
dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp);
if (imx6_pcie->drvdata->variant != IMX7D) {
if (imx6_pcie->drvdata->flags &
IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE) {
/*
* On i.MX7, DIRECT_SPEED_CHANGE behaves differently
* from i.MX6 family when no link speed transition
@ -1099,15 +1101,18 @@ 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,
.flags = IMX6_PCIE_FLAG_IMX6_PHY |
IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE,
},
[IMX6SX] = {
.variant = IMX6SX,
.flags = IMX6_PCIE_FLAG_IMX6_PHY,
.flags = IMX6_PCIE_FLAG_IMX6_PHY |
IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE,
},
[IMX6QP] = {
.variant = IMX6QP,
.flags = IMX6_PCIE_FLAG_IMX6_PHY,
.flags = IMX6_PCIE_FLAG_IMX6_PHY |
IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE,
},
[IMX7D] = {
.variant = IMX7D,