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

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Message-ID: <SLXP216MB0477275C0A8FFAE14274165FAA190@SLXP216MB0477.KORP216.PROD.OUTLOOK.COM>
Date:   Mon, 26 Oct 2020 04:08:18 +0000
From:   Jingoo Han <jingoohan1@...il.com>
To:     Jaehoon Chung <jh80.chung@...sung.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>,
        Han Jingoo <jingoohan1@...il.com>
Subject: Re: [PATCH v2 5/6] pci: dwc: pci-exynos: rework the driver to support
 Exynos5433 variant

On 10/25/20, 10:49 PM, Jaehoon Chung wrote:
> 
> Dear Jingoo,

Hi Jaehoon,

> 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.

Ah, I just  thought that you are not interested in Exynos PCIe anymore. However, if you want
to submit other patches for supporting other Exynos PCIe, adding you as an author is ok.
There are many Exynos SoCs that support PCIe IP. So, if someone like you who have good
experience on Exynos, helps submitting patches for Exynos PCIe, it would be very helpful. :-)
Thank you.

Best regards,
Jingoo Han

>
> Best Regards,
> Jaehoon Chung
>
> > 
> > Best regards,
> > Jingoo Han
> > 
> >>   */
> > 
> > [....]
> >