linux-kernel - Re: [PATCH] arm64: configs: Enable PCIe support for imx8mq boards

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Message-ID: <CAEyMn7bZy0vWbrmEuEb3HAGPWitai=uBiZS_-yvD8UzcCN+aTQ@mail.gmail.com>
Date:   Thu, 11 Mar 2021 17:13:25 +0100
From:   Heiko Thiery <heiko.thiery@...il.com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Lucas Stach <l.stach@...gutronix.de>,
        Baruch Siach <baruch@...s.co.il>,
        Fabio Estevam <festevam@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Andrey Smirnov <andrew.smirnov@...il.com>,
        Chris Healy <cphealy@...il.com>
Subject: Re: [PATCH] arm64: configs: Enable PCIe support for imx8mq boards

Hi all,

Added some more to the CC list since they could be interested in this.

Am Mo., 8. März 2021 um 13:58 Uhr schrieb Heiko Thiery <heiko.thiery@...il.com>:
>
> Hi all,
>
> Am Mo., 8. März 2021 um 10:03 Uhr schrieb Heiko Thiery <heiko.thiery@...il.com>:
> >
> > Enable PCI_IMX6 to get PCI support for imx8mq boards like imx8mq-evk,
> > imx8mq-kontron-pitx-imx8m and imx8mq-zii-ultra. This increases the image
> > by 64k.
>
> The growth of 64k is not right.
>
> Using the support script shows:
>
> $ scripts/bloat-o-meter vmlinux vmlinux.with_pci
> add/remove: 22/2 grow/shrink: 2/0 up/down: 8338/-16 (8322)
> Function                                     old     new   delta
> imx6_pcie_probe                                -    1804   +1804
> imx6_pcie_deassert_core_reset                  -    1356   +1356
> imx6_pcie_of_match                             -    1200   +1200
> imx6_pcie_start_link                           -     692    +692
> imx6_pcie_suspend_noirq                        -     528    +528
> imx6_pcie_init_phy                             -     496    +496
> imx6_pcie_host_init                            -     336    +336
> imx6_pcie_assert_core_reset                    -     332    +332
> pcie_phy_write                                 -     272    +272
> imx6_pcie_driver                               -     200    +200
> imx6_pcie_pm_ops                               -     184    +184
> pcie_phy_read                                  -     168    +168
> imx6_pcie_resume_noirq                         -     156    +156
> pcie_phy_wait_ack                              -     140    +140
> pcie_phy_poll_ack.isra                         -     124    +124
> imx6_pcie_quirk                                -     124    +124
> drvdata                                        -      60     +60
> dw_pcie_ops                                  208     264     +56
> imx6_pcie_init                                 -      40     +40
> imx6_pcie_shutdown                             -      32     +32
> imx6_pcie_host_ops                             -      16     +16
> e843419@...b_0001256e_27c4                     -       8      +8
> e843419@...0_00007810_4f0                      -       8      +8
> vermagic                                      76      82      +6
> e843419@...e_0001064f_80                       8       -      -8
> e843419@...3_00008212_13c                      8       -      -8
> Total: Before=21884381, After=21892703, chg +0.04%
>
>
> > Signed-off-by: Heiko Thiery <heiko.thiery@...il.com>
> > ---
> >  arch/arm64/configs/defconfig | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> > index d612f633b771..4b7b4a8f1860 100644
> > --- a/arch/arm64/configs/defconfig
> > +++ b/arch/arm64/configs/defconfig
> > @@ -225,6 +225,7 @@ CONFIG_PCI_HOST_THUNDER_PEM=y
> >  CONFIG_PCI_HOST_THUNDER_ECAM=y
> >  CONFIG_PCIE_ROCKCHIP_HOST=m
> >  CONFIG_PCIE_BRCMSTB=m
> > +CONFIG_PCI_IMX6=y
> >  CONFIG_PCI_LAYERSCAPE=y
> >  CONFIG_PCIE_LAYERSCAPE_GEN4=y
> >  CONFIG_PCI_HISI=y
> > --
> > 2.30.0
> >


-- 
Heiko