[PATCH 2/3] PCI: dwc: Add common iATU register support

[Kunihiko Hayashi]

On 2020/09/25 18:10, Kunihiko Hayashi wrote:
> Hi Rob,
> 
> On 2020/09/24 0:57, Rob Herring wrote:
>> On Fri, Sep 11, 2020 at 05:50:02PM +0900, Kunihiko Hayashi wrote:
>>> This gets iATU register area from reg property that has reg-names "atu".
>>> In Synopsys DWC version 4.80 or later, since iATU register area is
>>> separated from core register area, this area is necessary to get from
>>> DT independently.
>>>
>>> Cc: Murali Karicheri <m-karicheri2 at ti.com>
>>> Cc: Jingoo Han <jingoohan1 at gmail.com>
>>> Cc: Gustavo Pimentel <gustavo.pimentel at synopsys.com>
>>> Suggested-by: Rob Herring <robh at kernel.org>
>>> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
>>> ---
>>>   drivers/pci/controller/dwc/pcie-designware.c | 8 +++++++-
>>>   1 file changed, 7 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
>>> index 4d105ef..4a360bc 100644
>>> --- a/drivers/pci/controller/dwc/pcie-designware.c
>>> +++ b/drivers/pci/controller/dwc/pcie-designware.c
>>> @@ -10,6 +10,7 @@
>>>   #include <linux/delay.h>
>>>   #include <linux/of.h>
>>> +#include <linux/of_platform.h>
>>>   #include <linux/types.h>
>>>   #include "../../pci.h"
>>> @@ -526,11 +527,16 @@ void dw_pcie_setup(struct dw_pcie *pci)
>>>       u32 val;
>>>       struct device *dev = pci->dev;
>>>       struct device_node *np = dev->of_node;
>>> +    struct platform_device *pdev;
>>>       if (pci->version >= 0x480A || (!pci->version &&
>>>                          dw_pcie_iatu_unroll_enabled(pci))) {
>>>           pci->iatu_unroll_enabled = true;
>>> -        if (!pci->atu_base)
>>> +        pdev = of_find_device_by_node(np);
>>
>> Use to_platform_device(dev) instead. Put that at the beginning as I'm
>> going to move 'dbi' in here too.
> 
> Okay, I'll rewrite it with to_platform_device(dev).
> Should I refer somewhere to rebase to your change?
It seems there is no dbi patch yet, so I'm going to send v2 in advance
for now. I can rebase it if necessary.

Thank you,

---
Best Regards
Kunihiko Hayashi