linux-kernel - Re: [PATCH v2 5/6] pci: dwc: pci-exynos: rework the driver to support Exynos5433 variant

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Message-ID: <29fa2071-dd4e-4528-d2db-dcd86e443794@samsung.com>
Date:   Mon, 26 Oct 2020 11:49:44 +0900
From:   Jaehoon Chung <jh80.chung@...sung.com>
To:     Jingoo Han <jingoohan1@...il.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Cc:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v2 5/6] pci: dwc: pci-exynos: rework the driver to
 support Exynos5433 variant

Dear Jingoo,

On 10/24/20 12:12 PM, Jingoo Han wrote:
> On 10/23/20, 3:58 AM, Marek Szyprowski wrote:
>>
>> From: Jaehoon Chung <jh80.chung@...sung.com>
>>
>> Exynos5440 SoC support has been dropped since commit 8c83315da1cf ("ARM:
>> dts: exynos: Remove Exynos5440"). Rework this driver to support DWC PCIe
>> variant found in the Exynos5433 SoCs.
>>
>> The main difference in Exynos5433 variant is lack of the MSI support
>> (the MSI interrupt is not even routed to the CPU).
>>
>> Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
>> [mszyprow: reworked the driver to support only Exynos5433 variant,
>> 	   simplified code, rebased onto current kernel code, added
>> 	   regulator support, converted to the regular platform driver,
>> 	   removed MSI related code, rewrote commit message]
>> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
>> Acked-by: Krzysztof Kozlowski <krzk@...nel.org>
>> ---
>>  drivers/pci/controller/dwc/Kconfig      |   3 +-
>>  drivers/pci/controller/dwc/pci-exynos.c | 358 ++++++++++--------------
>>  drivers/pci/quirks.c                    |   1 +
>>  3 files changed, 145 insertions(+), 217 deletions(-)
> 
> [....]
> 
>> diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
>> index 242683cde04a..58056fbdc2fa 100644
>> --- a/drivers/pci/controller/dwc/pci-exynos.c
>> +++ b/drivers/pci/controller/dwc/pci-exynos.c
>> @@ -2,26 +2,23 @@
>>  /*
>>   * PCIe host controller driver for Samsung Exynos SoCs
>>   *
>> - * Copyright (C) 2013 Samsung Electronics Co., Ltd.
>> + * Copyright (C) 2013-2020 Samsung Electronics Co., Ltd.
>>   *		https://www.samsung.com
>>   *
>>   * Author: Jingoo Han <jg1.han@...sung.com>
>> + *	   Jaehoon Chung <jh80.chung@...sung.com>
> 
> Would you explain the reason why you add him as an author?
> If reasonable, I will accept it. Also, I want gentle discussion, not aggressive one.
> Thank you.

It's not important to add me as author. :)
If you don't want to accept it, i think it can be removed it.
I think that pci-exynos was supported on only exynos5440.
As you know, exynos5440 was not common as compared with other exynos SoC.
After this patch, pci-exynos is re-newed.

Best Regards,
Jaehoon Chung

> 
> Best regards,
> Jingoo Han
> 
>>   */
> 
> [....]
>