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x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934680AbeCSVFc (ORCPT ); Mon, 19 Mar 2018 17:05:32 -0400 Received: from mail-co1nam03on0123.outbound.protection.outlook.com ([104.47.40.123]:22550 "EHLO NAM03-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965357AbeCSQCJ (ORCPT ); Mon, 19 Mar 2018 12:02:09 -0400 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Hans de Goede , Linus Walleij , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 147/281] pinctrl: baytrail: Enable glitch filter for GPIOs used as interrupts Thread-Topic: [PATCH AUTOSEL for 4.9 147/281] pinctrl: baytrail: Enable glitch filter for GPIOs used as interrupts Thread-Index: AQHTv5txJsNvnfNnJE2BHIsn1O+twg== Date: Mon, 19 Mar 2018 16:00:47 +0000 Message-ID: <20180319155742.13731-147-alexander.levin@microsoft.com> References: <20180319155742.13731-1-alexander.levin@microsoft.com> In-Reply-To: <20180319155742.13731-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0933;7:H7O1k3UOIPJQ2PRvTY5PEj2hsYVfIcLL7f4VQ6fgIUddAE7nyBZcb4PfxtD7m3zMcHNEXaJPh478lmgM40b++ZRoHlatY7x275TNvK8de9znfce3e2ryWdOE8EoKLF3JV5uUQPhNwcYV/K5iAq/pH1BDfq7/w2xnKH+8yyUpG/q96WBCIGwHHj568JjN3ebs2zl7h5J8Wi/cE9il47O3zaYyVeYmEkM9usNlcEazoWkhL/3nyeGSg4wwMCA0sPoU;20:uBmP1OqcxPzD41RBxMhFA6dOBsGqWPCd92BvW+GvnFo/o/JZoBbw+j0HNatSNNipxZ/XOQxJwYBPqoLzn4DYARpb59YqClrChk0qFEI0AxTWYmxGsQz4Tqeyp+2Jpf8+UGbiSecywCq346z+hvXpOSQmr1IIZeIMIin3WmPlOnM= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: be4e0cd4-8e70-4afd-6abb-08d58db2bf43 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0933; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: dQdIOMvXFXmjQgxpY1HcACBpwOt5BYWvtfMr8+1fN2eflxzfX6uaZ9mQL6243gn4uWidUDxECemwA+jSuakTS4s5zZsju+UE19UuIJbtNCcw8hZbjEcXCPaa3QiJ4DIth6UIKRwrGDxjIyfGRajKQUOowvWI8kyIXLyj9RJZRI+1v8WvflfgDxZtpjcZF7V/+vpXm900kB6kTWR24aycC18XH1sgzbyc9+5/n3CdXwa2vcr1E2mqgf3VL5ehI3BaJtxHJZpyT3DOuBdwP1W9aZJ3yaJDZIArJNLv2vIvtydV1sbRgqDWJCfKnIgkgFOuahTURn1603y5nqmCWbki6w== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: be4e0cd4-8e70-4afd-6abb-08d58db2bf43 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 16:00:47.3826 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0933 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Hans de Goede [ Upstream commit 9291c65b01d1c67ebd56644cb19317ad665c44b3 ] On some systems, some PCB traces attached to GpioInts are routed in such a way that they pick up enough interference to constantly (many times per second) trigger. Enabling glitch-filtering fixes this. Signed-off-by: Hans de Goede Acked-by: Mika Westerberg Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/pinctrl/intel/pinctrl-baytrail.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/int= el/pinctrl-baytrail.c index 0a965026b134..fc5b18d3db20 100644 --- a/drivers/pinctrl/intel/pinctrl-baytrail.c +++ b/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -46,6 +46,9 @@ #define BYT_TRIG_POS BIT(25) #define BYT_TRIG_LVL BIT(24) #define BYT_DEBOUNCE_EN BIT(20) +#define BYT_GLITCH_FILTER_EN BIT(19) +#define BYT_GLITCH_F_SLOW_CLK BIT(17) +#define BYT_GLITCH_F_FAST_CLK BIT(16) #define BYT_PULL_STR_SHIFT 9 #define BYT_PULL_STR_MASK (3 << BYT_PULL_STR_SHIFT) #define BYT_PULL_STR_2K (0 << BYT_PULL_STR_SHIFT) @@ -1579,6 +1582,9 @@ static int byt_irq_type(struct irq_data *d, unsigned = int type) */ value &=3D ~(BYT_DIRECT_IRQ_EN | BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); + /* Enable glitch filtering */ + value |=3D BYT_GLITCH_FILTER_EN | BYT_GLITCH_F_SLOW_CLK | + BYT_GLITCH_F_FAST_CLK; =20 writel(value, reg); =20 --=20 2.14.1