On Thursday 19 July 2018 04:45 PM, Lorenzo Pieralisi wrote:
> On Thu, Jul 19, 2018 at 04:04:34PM +0530, Vignesh R wrote:
>> Hi Lorenzo,
>>
[...]
>>>> + ret = dra7xx_pcie_unaligned_memaccess(dev);
>>>> + if (ret)
>>>> + dev_err(dev, "WA for Errata i870 not appplied. Update DT\n");
>>>
>>> Hi Vignesh,
>>>
>>> Nit: s/appplied/applied
>>>
>>
>> Oops, let me know if you want me to resend with this fixed.
>
> I can fix it, no problem but see below.
>
>>> Two questions:
>>>
>>> - Current code applies the unaligned_memaccess() workaround for all
>>> compatible variants. This is fine for current controllers (since
>>> they are all affected), the code path above will have to be
>>> reworked if there is any other compatible IP re-using the driver
>>> that does not require the workaround.
>>
>> There are no compatible IPs that don't require this workaround. Also, I
>> don't see this IP being re-used in future. If you insist, I can add a
>> errata flag
>
> I do not insist, I just pointed this out ;-)
>
>>> - How do you want this series to go upstream ? If it goes via arm-soc,
>>> which I think it should, here is my ACK on this patch:
>>>
>> Patch 1 and 2(dt bindings update and driver patch) can go in via PCI
>> tree. And DT changes(patch 3 and 4) can be picked up by Tony via
>> omap/arm-soc tree. They are mostly independent and should not cause any
>> problems. Does that sound good?
>
> It should be fine but technically as soon as patch (2) is applied we
> would have a regression if patches (3) and (4) are applied separately.
>
Right, although not a regression, I see your point. It would be good to
merge patch 3 and 4 before patch 2.
Tony,
Let me know if you are okay with taking this series via omap tree. I can
resend re-ordering patch 2 to come at the end of the series.
Regards
Vignesh
>
>>> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
>>>
>>
>> Thanks!
>>
>>> Please let me know if I can drop this series from the PCI patchwork.
>>>
>>> Thanks,
>>> Lorenzo
>>>
>>>> +
>>>> switch (mode) {
>>>> case DW_PCIE_RC_TYPE:
>>>> if (!IS_ENABLED(CONFIG_PCI_DRA7XX_HOST)) {
>>>> @@ -717,10 +721,6 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
>>>> dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_DEVICE_TYPE,
>>>> DEVICE_TYPE_EP);
>>>>
>>>> - ret = dra7xx_pcie_ep_unaligned_memaccess(dev);
>>>> - if (ret)
>>>> - goto err_gpio;
>>>> -
>>>> ret = dra7xx_add_pcie_ep(dra7xx, pdev);
>>>> if (ret < 0)
>>>> goto err_gpio;
>>>> --
>>>> 2.18.0
>>>>
>>
>> --
>> Regards
>> Vignesh
--
Regards
Vignesh
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