dra7xx pci driver broken on dra7xx-evm

Hi,

On Thursday 07 January 2016 03:15 AM, Richard Cochran wrote:

The dra7xx-evm box freezes hard at the very first PCI bus access, the
call to in dra7xx_pcie_readl() in dra7xx_pcie_probe().

The out-of-tree 3.14.53 TI driver performs a reset via platform data,
calling omap_device_assert_hardreset() by hook and crook.

Adding the reset into the mainline driver cures the freeze.

Question: How on earth is this driver supposed to work?

It doesn't work out of the box in mainline. (Every time I post a PCI patch, I
add the pdata-quirks mechanism to test it). The pdata-quirks mechanism used in
TI tree is not an upstream-able solution. Something like this [1] was done for
performing reset. Not sure the latest state of that. Dan? Suman?

Thanks
Kishon

[1] -> https://patches.linaro.org/33797/

Thanks,
Richard