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Tue, 26 Nov 2019 11:56:36 +0000 From: Rajan Vaja To: "daniel.lezcano@linaro.org" , "tglx@linutronix.de" CC: "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] drivers: clocksource: Use ttc driver as platform driver Thread-Topic: [PATCH] drivers: clocksource: Use ttc driver as platform driver Thread-Index: AQHVlVaOW+EHQwVffUWJv7WplPkHr6edcAHggAAGWTA= Date: Tue, 26 Nov 2019 11:56:36 +0000 Message-ID: References: <1573122659-13947-1-git-send-email-rajan.vaja@xilinx.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=RAJANV@xilinx.com; x-originating-ip: [14.142.15.114] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 8258dc0f-0f8f-4d65-4eea-08d77267b0ce x-ms-traffictypediagnostic: BYAPR02MB4696: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4941; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8258dc0f-0f8f-4d65-4eea-08d77267b0ce X-MS-Exchange-CrossTenant-originalarrivaltime: 26 Nov 2019 11:56:36.8853 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: +cGXQUABB1zs/9WRWPHSHi3m0HtnNJ8v1acP01rgR6tL4LWUaAqe7hp+mrZOL9M5ap+wQyrbsHahhLCsNvP2Nw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR02MB4696 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Please ignore this request. Thanks, Rajan > -----Original Message----- > From: Rajan Vaja > Sent: 26 November 2019 05:06 PM > To: Rajan Vaja ; ichal.simek@xilinx.com; > daniel.lezcano@linaro.org; tglx@linutronix.de > Cc: linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org > Subject: RE: [PATCH] drivers: clocksource: Use ttc driver as platform dri= ver >=20 > Request for review. >=20 > Thanks, > Rajan >=20 > > -----Original Message----- > > From: Rajan Vaja > > Sent: 07 November 2019 04:01 PM > > To: ichal.simek@xilinx.com; daniel.lezcano@linaro.org; tglx@linutronix.= de > > Cc: linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;= Rajan > Vaja > > > > Subject: [PATCH] drivers: clocksource: Use ttc driver as platform drive= r > > > > Currently TTC driver is TIMER_OF_DECLARE type driver. Because of > > that, TTC driver may be initialized before other clock drivers. If > > TTC driver is dependent on that clock driver then initialization of > > TTC driver will failed. > > > > So use TTC driver as platform driver instead of using > > TIMER_OF_DECLARE. > > > > Signed-off-by: Rajan Vaja > > --- > > drivers/clocksource/timer-cadence-ttc.c | 26 ++++++++++++++++++-------= - > > 1 file changed, 18 insertions(+), 8 deletions(-) > > > > diff --git a/drivers/clocksource/timer-cadence-ttc.c b/drivers/clocksou= rce/timer- > > cadence-ttc.c > > index 88fe2e9..38858e1 100644 > > --- a/drivers/clocksource/timer-cadence-ttc.c > > +++ b/drivers/clocksource/timer-cadence-ttc.c > > @@ -15,6 +15,8 @@ > > #include > > #include > > #include > > +#include > > +#include > > > > /* > > * This driver configures the 2 16/32-bit count-up timers as follows: > > @@ -464,13 +466,7 @@ static int __init ttc_setup_clockevent(struct clk = *clk, > > return 0; > > } > > > > -/** > > - * ttc_timer_init - Initialize the timer > > - * > > - * Initializes the timer hardware and register the clock source and cl= ock event > > - * timers with Linux kernal timer framework > > - */ > > -static int __init ttc_timer_init(struct device_node *timer) > > +static int __init ttc_timer_probe(struct platform_device *pdev) > > { > > unsigned int irq; > > void __iomem *timer_baseaddr; > > @@ -478,6 +474,7 @@ static int __init ttc_timer_init(struct device_node= *timer) > > static int initialized; > > int clksel, ret; > > u32 timer_width =3D 16; > > + struct device_node *timer =3D pdev->dev.of_node; > > > > if (initialized) > > return 0; > > @@ -532,4 +529,17 @@ static int __init ttc_timer_init(struct device_nod= e > *timer) > > return 0; > > } > > > > -TIMER_OF_DECLARE(ttc, "cdns,ttc", ttc_timer_init); > > +static const struct of_device_id ttc_timer_of_match[] =3D { > > + {.compatible =3D "cdns,ttc"}, > > + {}, > > +}; > > + > > +MODULE_DEVICE_TABLE(of, ttc_timer_of_match); > > + > > +static struct platform_driver ttc_timer_driver =3D { > > + .driver =3D { > > + .name =3D "cdns_ttc_timer", > > + .of_match_table =3D ttc_timer_of_match, > > + }, > > +}; > > +builtin_platform_driver_probe(ttc_timer_driver, ttc_timer_probe); > > -- > > 2.7.4