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PCI: layerscape: Add LS1046a support 

Add support for the LS1046a PCIe controller.  This device has a different
LUT_DBG offset, so add "lut_dbg" to ls_pcie_drvdata to
describe this difference.

[bhelgaas: changelog, remove now-unused PCIE_LUT_DBG]
Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Mingkai Hu 2016-10-25 20:36:56 +08:00 committed by Bjorn Helgaas
parent e594233803
commit 1d77040bde
2 changed files with 13 additions and 4 deletions
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1
Documentation/devicetree/bindings/pci/layerscape-pci.txt
View File

@ -15,6 +15,7 @@ Required properties:
- compatible: should contain the platform identifier such as:
"fsl,ls1021a-pcie", "snps,dw-pcie"
"fsl,ls2080a-pcie", "fsl,ls2085a-pcie", "snps,dw-pcie"
"fsl,ls1046a-pcie"
- reg: base addresses and lengths of the PCIe controller
- interrupts: A list of interrupt outputs of the controller. Must contain an
entry for each entry in the interrupt-names property.

16
drivers/pci/host/pci-layerscape.c
View File

@ -35,12 +35,10 @@
#define PCIE_STRFMR1 0x71c /* Symbol Timer & Filter Mask Register1 */
#define PCIE_DBI_RO_WR_EN 0x8bc /* DBI Read-Only Write Enable Register */
/* PEX LUT registers */
#define PCIE_LUT_DBG 0x7FC /* PEX LUT Debug Register */
struct ls_pcie_drvdata {
u32 lut_offset;
u32 ltssm_shift;
u32 lut_dbg;
struct pcie_host_ops *ops;
};
@ -134,7 +132,7 @@ static int ls_pcie_link_up(struct pcie_port *pp)
struct ls_pcie *pcie = to_ls_pcie(pp);
u32 state;
state = (ioread32(pcie->lut + PCIE_LUT_DBG) >>
state = (ioread32(pcie->lut + pcie->drvdata->lut_dbg) >>
pcie->drvdata->ltssm_shift) &
LTSSM_STATE_MASK;
@ -196,18 +194,28 @@ static struct ls_pcie_drvdata ls1021_drvdata = {
static struct ls_pcie_drvdata ls1043_drvdata = {
.lut_offset = 0x10000,
.ltssm_shift = 24,
.lut_dbg = 0x7fc,
.ops = &ls_pcie_host_ops,
};
static struct ls_pcie_drvdata ls1046_drvdata = {
.lut_offset = 0x80000,
.ltssm_shift = 24,
.lut_dbg = 0x407fc,
.ops = &ls_pcie_host_ops,
};
static struct ls_pcie_drvdata ls2080_drvdata = {
.lut_offset = 0x80000,
.ltssm_shift = 0,
.lut_dbg = 0x7fc,
.ops = &ls_pcie_host_ops,
};
static const struct of_device_id ls_pcie_of_match[] = {
{ .compatible = "fsl,ls1021a-pcie", .data = &ls1021_drvdata },
{ .compatible = "fsl,ls1043a-pcie", .data = &ls1043_drvdata },
{ .compatible = "fsl,ls1046a-pcie", .data = &ls1046_drvdata },
{ .compatible = "fsl,ls2080a-pcie", .data = &ls2080_drvdata },
{ .compatible = "fsl,ls2085a-pcie", .data = &ls2080_drvdata },
{ },