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MIPS: pci-ar724x: setup command register of the PCI controller

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The command register of the PCI controller is
not initialized correctly by the bootloader on
some boards and this leads to non working PCI
bus.

Add code to initialize the command register
from the Linux code to avoid this.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4916/
Signed-off-by: John Crispin <blogic@openwrt.org>
This commit is contained in:
Gabor Juhos
2013-02-03 14:52:47 +00:00
committed by John Crispin
parent 8b66d46118
commit 12401fc28d
3 changed files with 74 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/mips/ath79/pci.c
View File

@@ -139,13 +139,14 @@ static struct platform_device *
ath79_register_pci_ar724x(int id,
unsigned long cfg_base,
unsigned long ctrl_base,
unsigned long crp_base,
unsigned long mem_base,
unsigned long mem_size,
unsigned long io_base,
int irq)
{
struct platform_device *pdev;
struct resource res[5];
struct resource res[6];
memset(res, 0, sizeof(res));
@@ -173,6 +174,11 @@ ath79_register_pci_ar724x(int id,
res[4].start = io_base;
res[4].end = io_base;
res[5].name = "crp_base";
res[5].flags = IORESOURCE_MEM;
res[5].start = crp_base;
res[5].end = crp_base + AR724X_PCI_CRP_SIZE - 1;
pdev = platform_device_register_simple("ar724x-pci", id,
res, ARRAY_SIZE(res));
return pdev;
@@ -188,6 +194,7 @@ int __init ath79_register_pci(void)
pdev = ath79_register_pci_ar724x(-1,
AR724X_PCI_CFG_BASE,
AR724X_PCI_CTRL_BASE,
AR724X_PCI_CRP_BASE,
AR724X_PCI_MEM_BASE,
AR724X_PCI_MEM_SIZE,
0,
@@ -203,6 +210,7 @@ int __init ath79_register_pci(void)
pdev = ath79_register_pci_ar724x(-1,
AR724X_PCI_CFG_BASE,
AR724X_PCI_CTRL_BASE,
AR724X_PCI_CRP_BASE,
AR724X_PCI_MEM_BASE,
AR724X_PCI_MEM_SIZE,
0,