From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx499oqiFmFSwyR6c/fBXwXUvHNQmLeS2OOlpKFjAFX3BuiA2tZ4i1UJLwd/TmA9YdpDLSTrO ARC-Seal: i=1; a=rsa-sha256; t=1523399349; cv=none; d=google.com; s=arc-20160816; b=Q9+xK8L/gCaTq68WtudJ9NS/MwdQiEcPpSnYfbRJT9wA3NRQ1x47RiIBLvc0BX5qR4 2Y/nafFYLNHXukaSymCl9O28ZSRj9UhLGTT6CjIwmVPiEkiJYQNF2aZYN032X8vtmBEG tWVLEOkAyMANJxv0RbVeiptOhlMw0TOrli6pNu6O8z1DZZck+m3BToya40SrwH6mPteM L5VI1aK7nlA0+I0l8ay618sFroMUqUqNBgedf52qzVb2gHC0TrMwPdvmEWn1dFO++okY HjCOUW8JPamvl1V5Ly9rX6jMS0HkgVnyduPePuzDWmG4E5nb2s23J/m7soUrm8Xq9e3S 0qrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=rxSFV+IHdrv43iuZdy9ytktt33Wf8Gdflps1pLV5xbI=; b=ZqGBlebzzeL6jLle0YXd1z8CBwcjeB4lX+q5fsQV1OQnthR+DGjtC202Q4AKwPdTpM Doic8jckluwbo+mGbW/z+WEM6q9zCxsSxyWc4G/+m4QqgnG63jJuCh36qwMq5QDMG+df V2jBG1WJYZnOSPyUiRUBtH0Sky+K2F438NrFFieRHlMlViqlMzePswiSBbH/gUxcUoq3 4x4A6s4tp8Me3JgIr8DaRCITVMVA3NQEgLJ2Jiq+lbADHKrbG55tsjiTqWgeuDKF7reg DkHQyQ0UdhMwtM4J0NcsHj76wabojtJBjQ+bajCXMsEQMKWDMRCkQfE30p2vFs+u8PlD XJQg== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans de Goede , Mika Westerberg , Linus Walleij , Sasha Levin Subject: [PATCH 4.15 057/168] pinctrl: baytrail: Enable glitch filter for GPIOs used as interrupts Date: Wed, 11 Apr 2018 00:23:19 +0200 Message-Id: <20180410212802.637537235@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180410212800.144079021@linuxfoundation.org> References: <20180410212800.144079021@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1597399996448030110?= X-GMAIL-MSGID: =?utf-8?q?1597399996448030110?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ 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 Signed-off-by: Greg Kroah-Hartman --- drivers/pinctrl/intel/pinctrl-baytrail.c | 6 ++++++ 1 file changed, 6 insertions(+) --- 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 */ value &= ~(BYT_DIRECT_IRQ_EN | BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); + /* Enable glitch filtering */ + value |= BYT_GLITCH_FILTER_EN | BYT_GLITCH_F_SLOW_CLK | + BYT_GLITCH_F_FAST_CLK; writel(value, reg);