| Message ID | 1466169626-11158-3-git-send-email-tharvey@gateworks.com |
|---|---|
| State | Accepted |
| Commit | f4416579d31d884305e383f7370ee2262c0f8a7d |
| Delegated to: | Stefano Babic |
| Headers | show |
On 17/06/2016 15:20, Tim Harvey wrote: > The IMX6 PCIe host controller does not have a proper reset and as such there > are several issues that can arise if PCI is enabled in the bootloader follwed > by Linux trying to re-configure LTSSM and/or toggling PERST# to the devices. > > For now, the best approach seems to default to disabling PCI by defaulting > pciedisable=1. This can be overridden by the user if they need PCI in the > bootloader, for example: > - GW552x needing ethernet access in bootloader > - GW16082 expansion board needing a device-tree fixup for irq mapping > > Signed-off-by: Tim Harvey <tharvey@gateworks.com> > --- > include/configs/gw_ventana.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h > index 982ddba..4acfca6 100644 > --- a/include/configs/gw_ventana.h > +++ b/include/configs/gw_ventana.h > @@ -274,6 +274,7 @@ > "dio0:mode=gpio;dio1:mode=gpio;dio2:mode=gpio;dio3:mode=gpio\0" \ > > #define CONFIG_EXTRA_ENV_SETTINGS_COMMON \ > + "pcidisable=1\0" \ > "usb_pgood_delay=2000\0" \ > "console=ttymxc1\0" \ > "bootdevs=usb mmc sata flash\0" \ > Applied to u-boot-imx, thanks ! Best regards, Stefano Babic
diff --git a/include/configs/gw_ventana.h b/include/configs/gw_ventana.h index 982ddba..4acfca6 100644 --- a/include/configs/gw_ventana.h +++ b/include/configs/gw_ventana.h @@ -274,6 +274,7 @@ "dio0:mode=gpio;dio1:mode=gpio;dio2:mode=gpio;dio3:mode=gpio\0" \ #define CONFIG_EXTRA_ENV_SETTINGS_COMMON \ + "pcidisable=1\0" \ "usb_pgood_delay=2000\0" \ "console=ttymxc1\0" \ "bootdevs=usb mmc sata flash\0" \
The IMX6 PCIe host controller does not have a proper reset and as such there are several issues that can arise if PCI is enabled in the bootloader follwed by Linux trying to re-configure LTSSM and/or toggling PERST# to the devices. For now, the best approach seems to default to disabling PCI by defaulting pciedisable=1. This can be overridden by the user if they need PCI in the bootloader, for example: - GW552x needing ethernet access in bootloader - GW16082 expansion board needing a device-tree fixup for irq mapping Signed-off-by: Tim Harvey <tharvey@gateworks.com> --- include/configs/gw_ventana.h | 1 + 1 file changed, 1 insertion(+)