Message ID | 1543893119-3716-1-git-send-email-Anson.Huang@nxp.com |
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State | New |
Headers | show
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Tue, 4 Dec 2018 03:17:50 +0000 From: Anson Huang <anson.huang@nxp.com> To: "shawnguo@kernel.org" <shawnguo@kernel.org>, "s.hauer@pengutronix.de" <s.hauer@pengutronix.de>, "kernel@pengutronix.de" <kernel@pengutronix.de>, Fabio Estevam <fabio.estevam@nxp.com>, "linux@armlinux.org.uk" <linux@armlinux.org.uk>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org> Subject: [PATCH V2] ARM: imx: update the cpu power up timing setting on i.mx6sx Thread-Topic: [PATCH V2] ARM: imx: update the cpu power up timing setting on i.mx6sx Thread-Index: AQHUi3/sG9Q7quxpRUG4P7UHstH/fQ== Date: Tue, 4 Dec 2018 03:17:45 +0000 Message-ID: <1543893119-3716-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK2PR03CA0065.apcprd03.prod.outlook.com (2603:1096:202:17::35) To DB3PR0402MB3916.eurprd04.prod.outlook.com (2603:10a6:8:10::18) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.67] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org |
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[V2] ARM: imx: update the cpu power up timing setting on i.mx6sx
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On Tue, Dec 04, 2018 at 03:17:45AM +0000, Anson Huang wrote: > The sw2iso count should cover ARM LDO ramp-up time, > the MAX ARM LDO ramp-up time may be up to more than > 100us on some boards, this patch sets sw2iso to 0xf > (~384us) which is the reset value, and it is much > more safe to cover different boards, since we have > observed that some customer boards failed with current > setting of 0x2. > > Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx") > Signed-off-by: Anson Huang <Anson.Huang@nxp.com> > Reviewed-by: Fabio Estevam <festevam@gmail.com> Applied, thanks.
diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c index 243a108..fd0053e 100644 --- a/arch/arm/mach-imx/cpuidle-imx6sx.c +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c @@ -110,7 +110,7 @@ int __init imx6sx_cpuidle_init(void) * except for power up sw2iso which need to be * larger than LDO ramp up time. */ - imx_gpc_set_arm_power_up_timing(2, 1); + imx_gpc_set_arm_power_up_timing(0xf, 1); imx_gpc_set_arm_power_down_timing(1, 1); return cpuidle_register(&imx6sx_cpuidle_driver, NULL);