From: kishon@ti.com (Kishon Vijay Abraham I)
To: linux-arm-kernel@lists.infradead.org
Subject: dra7xx pci driver broken on dra7xx-evm
Date: Thu, 7 Jan 2016 10:47:50 +0530 [thread overview]
Message-ID: <568DF4FE.5010704@ti.com> (raw)
In-Reply-To: <20160106214518.GA6106@localhost.localdomain>
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
>
next prev parent reply other threads:[~2016-01-07 5:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-06 21:45 dra7xx pci driver broken on dra7xx-evm Richard Cochran
2016-01-07 5:17 ` Kishon Vijay Abraham I [this message]
2016-01-07 7:37 ` Richard Cochran
2016-01-07 8:11 ` [PATCH] arm: pci: mark the dra7xx driver as broken Richard Cochran
2016-01-07 8:44 ` Kishon Vijay Abraham I
2016-01-07 9:25 ` Richard Cochran
2016-01-07 14:42 ` Bjorn Helgaas
2016-01-08 6:55 ` Kishon Vijay Abraham I
2016-01-07 21:26 ` dra7xx pci driver broken on dra7xx-evm Suman Anna
2016-01-07 21:59 ` Tony Lindgren
2016-01-08 6:07 ` Kishon Vijay Abraham I
2016-01-08 9:22 ` Richard Cochran
2016-01-11 8:58 ` Kishon Vijay Abraham I
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