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Tue, 17 Dec 2019 15:00:34 +0000 Received: from unknown-38-66.xilinx.com ([149.199.38.66] helo=xsj-pvapsmtp01) by xsj-pvapsmtpgw01 with esmtp (Exim 4.63) (envelope-from ) id 1ihEKr-0000vF-T1; Tue, 17 Dec 2019 07:00:29 -0800 Received: from [127.0.0.1] (helo=localhost) by xsj-pvapsmtp01 with smtp (Exim 4.63) (envelope-from ) id 1ihEKm-00026Z-OT; Tue, 17 Dec 2019 07:00:24 -0800 Received: from [172.30.17.107] by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1ihEKd-0001l3-Py; Tue, 17 Dec 2019 07:00:15 -0800 Subject: Re: [PATCH] drivers: clocksource: Use ttc driver as platform driver To: Daniel Lezcano , Rajan Vaja , "tglx@linutronix.de" References: <1573122988-18399-1-git-send-email-rajan.vaja@xilinx.com> <2ffe4baf-1de1-3f0e-311f-dd1fdaf1cee8@linaro.org> From: Michal Simek Message-ID: Date: Tue, 17 Dec 2019 16:00:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <2ffe4baf-1de1-3f0e-311f-dd1fdaf1cee8@linaro.org> Content-Language: en-US X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83; 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Ip=[149.199.60.83]; Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR02MB5762 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191217_070043_598691_83535C91 X-CRM114-Status: GOOD ( 16.91 ) 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: Jolly Shah , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 05. 12. 19 17:24, Daniel Lezcano wrote: > On 26/11/2019 12:53, Rajan Vaja wrote: >> Request for review. > > Waiting from Michal Simek review ... > > >>> -----Original Message----- >>> From: Rajan Vaja >>> Sent: 07 November 2019 04:06 PM >>> To: Michal Simek ; daniel.lezcano@linaro.org; >>> tglx@linutronix.de >>> Cc: linux-arm-kernel@lists.infradead.org; Jolly Shah ; linux- >>> kernel@vger.kernel.org; Rajan Vaja >>> Subject: [PATCH] drivers: clocksource: Use ttc driver as platform driver >>> >>> 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/clocksource/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 clock 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 = 16; >>> + struct device_node *timer = pdev->dev.of_node; >>> >>> if (initialized) >>> return 0; >>> @@ -532,4 +529,17 @@ static int __init ttc_timer_init(struct device_node *timer) >>> return 0; >>> } >>> >>> -TIMER_OF_DECLARE(ttc, "cdns,ttc", ttc_timer_init); >>> +static const struct of_device_id ttc_timer_of_match[] = { >>> + {.compatible = "cdns,ttc"}, >>> + {}, >>> +}; >>> + >>> +MODULE_DEVICE_TABLE(of, ttc_timer_of_match); >>> + >>> +static struct platform_driver ttc_timer_driver = { >>> + .driver = { >>> + .name = "cdns_ttc_timer", >>> + .of_match_table = ttc_timer_of_match, >>> + }, >>> +}; >>> +builtin_platform_driver_probe(ttc_timer_driver, ttc_timer_probe); >>> -- >>> 2.7.4 >> Looks good. I have also tested it on zc706. Tested-by: Michal Simek Acked-by: Michal Simek Note: headers are not sorted but they weren't even before this patch. Thanks, Michal _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel