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15.20.3216.034; Thu, 30 Jul 2020 13:11:56 +0000 From: Anson Huang To: Philipp Zabel , Rob Herring Subject: RE: [PATCH V3 3/3] pci: imx: Select RESET_IMX7 by default Thread-Topic: [PATCH V3 3/3] pci: imx: Select RESET_IMX7 by default Thread-Index: AQHWXqG4Y4oLO+dW6EKGCbyaa2afQ6keu+gAgAAGD4CAAK2XAIAAVqoAgABiDOA= Date: Thu, 30 Jul 2020 13:11:56 +0000 Message-ID: References: <1595254921-26050-1-git-send-email-Anson.Huang@nxp.com> <1595254921-26050-3-git-send-email-Anson.Huang@nxp.com> <0cdecff564215de6711ca04e063fa696a160fad9.camel@pengutronix.de> <0b541063e66e29b1dd0dad70f77a18a8591f224b.camel@pengutronix.de> In-Reply-To: <0b541063e66e29b1dd0dad70f77a18a8591f224b.camel@pengutronix.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: pengutronix.de; dkim=none (message not signed) header.d=none;pengutronix.de; dmarc=none action=none header.from=nxp.com; x-originating-ip: [183.192.18.11] x-ms-publictraffictype: Email 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Internal X-MS-Exchange-CrossTenant-AuthSource: DB3PR0402MB3916.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2ebfad9d-1693-4d76-3c68-08d8348a22e7 X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Jul 2020 13:11:56.7326 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: UnmpXMLmvEYKZyeUmbHSDxdoE1dwg5E1Rxjhch87OlbIddBXM3YzpKlO5lkbCXsamexTNGDOkLqvmfeNlD0T0g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0401MB2374 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200730_091201_629499_B4E24A81 X-CRM114-Status: GOOD ( 33.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kunihiko Hayashi , Catalin Marinas , Bjorn Andersson , Jonathan Chocron , Leo Li , Fabio Estevam , Lorenzo Pieralisi , Geert Uytterhoeven , Dilip Kota , Will Deacon , Krzysztof Kozlowski , dl-linux-imx , PCI , Thierry Reding , Sascha Hauer , Bjorn Helgaas , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" , "linux-kernel@vger.kernel.org" , Vidya Sagar , Vinod , Sascha Hauer , Olof Johansson , Shawn Guo , Andrew Murray Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Philipp > Subject: Re: [PATCH V3 3/3] pci: imx: Select RESET_IMX7 by default > > Hi Anson, > > On Thu, 2020-07-30 at 02:11 +0000, Anson Huang wrote: > > Hi, Philipp/Rob > > > > > Subject: Re: [PATCH V3 3/3] pci: imx: Select RESET_IMX7 by default > > > > > > On Wed, 2020-07-29 at 09:26 -0600, Rob Herring wrote: > > > > On Mon, Jul 20, 2020 at 8:26 AM Anson Huang > > > > wrote: > > > > > i.MX7 reset driver now supports module build and it is no longer > > > > > built in by default, so i.MX PCI driver needs to select it > > > > > explicitly due to it is NOT supporting loadable module currently. > > > > > > > > > > Signed-off-by: Anson Huang > > > > > --- > > > > > No change. > > > > > --- > > > > > drivers/pci/controller/dwc/Kconfig | 1 + > > > > > 1 file changed, 1 insertion(+) > > > > > > > > > > diff --git a/drivers/pci/controller/dwc/Kconfig > > > > > b/drivers/pci/controller/dwc/Kconfig > > > > > index 044a376..bcf63ce 100644 > > > > > --- a/drivers/pci/controller/dwc/Kconfig > > > > > +++ b/drivers/pci/controller/dwc/Kconfig > > > > > @@ -90,6 +90,7 @@ config PCI_EXYNOS > > > > > > > > > > config PCI_IMX6 > > > > > bool "Freescale i.MX6/7/8 PCIe controller" > > > > > + select RESET_IMX7 > > > > > > > > This will break as select will not cause all of RESET_IMX7's > > > > dependencies to be met. It also doesn't scale. Are you going to do > > > > the same thing for clocks, pinctrl, gpio, etc.? > > > > > > > > You should make the PCI driver work as a module. > > > > > > Oh, also PCI_IMX6 is used on (surprise) i.MX6, which doesn't need > > > RESET_IMX7 at all. > > > > > > How about hiding the RESET_IMX7 option and setting it default y if > > > PCI_IMX6 is enabled, as an interim solution? > > > > Like below, RESET_IMX7 is already default y when SOC_IMX7D, now added > > PCI_IMX6, let me know if it is OK for you, then I will send new patch for > review. > > > > +++ b/drivers/reset/Kconfig > > @@ -68,7 +68,7 @@ config RESET_IMX7 > > tristate "i.MX7/8 Reset Driver" > > I was thinking something like > > tristate "i.MX7/8 Reset Driver" if COMPILE_TEST || !PCI_IMX6 > > > depends on HAS_IOMEM > > depends on SOC_IMX7D || (ARM64 && ARCH_MXC) || > COMPILE_TEST > > - default y if SOC_IMX7D > > + default y if (SOC_IMX7D || PCI_IMX6) > > Yes, although without the above I think it could still be disabled manually or > via oldconfig. Then should I send a new version with below? As we already did it this way for i.MX7D, adding it for i.MX6 makes more sense? + default y if (SOC_IMX7D || PCI_IMX6) Thanks, Anson _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel