From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx4/uF3LIhfvswE8gl7sZmqsfX7RrRAjl7BtWWDJPiLVzLc61Vq1bf9PoTODoep55zTUaRApq ARC-Seal: i=1; a=rsa-sha256; t=1523473239; cv=none; d=google.com; s=arc-20160816; b=X4M9HJrH+LsS4jaR6qwHo3pfsjvaj39YE5SAH90DAkOkYs4wm7+fQ6vELhFzPSupjo BQ+5/G8Zm4SPEPDzu+St1IOOS7elDfHS4pJQIb5z/laFUiPPb5tqR4cxl056XnXn5ptU Mxa5x3dJn/BOfNwbM4ScYeJDCRmWx0H75jWiu74lkCoPk3vFfVAOSrFv4m0ZC7WjZgZ1 8fsH/412k3+Ing5ltOGuLYp+hZ5UL2C20ITJLNq4mfjnhtjANIk3QlCYvLhIe8x9bN67 +toxEZgzigx5Pb2uP9jpWh8NQ7ITPMETsYvF2cfGX726BDn4sIvj3JTOpcdUhDlXp844 20bw== 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=+rXPQiRxA7nHQ3z2NBN629+bz7lqm2gp8RM1jM4YkTk=; b=hbTyuP5D4liBN0k5kj94nO0lVTMjkka5nnTTZpXJmEQyzEIAOaV3vhumDDi8WZZjCW ixg4mQPUnvXRi4e/edeapFyKEtJ7Lhzq4J8SQoy5UmBpZkO7QjyDcBVTn1yCm5GxgKlG 4BkP1O8cKXl8o1G/12dlq3dbLTYcyEQtH3zU2VVHSNKoYBBfCV+T8na7qsVYZXpZ5QKB GKtwblvvrJpV0hpJXiDC2kbD4flK9xl1r5SPkc/4yM0z0Al6wT9ICyMJMr27lgistcH+ k66BLGdJaldRma8YWege++Tc75Aqs4JkxNeqIXRYnk4iqdqawq0IbZc/BE/i/wDh3v6c 112w== 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 4.9 144/310] pinctrl: baytrail: Enable glitch filter for GPIOs used as interrupts Date: Wed, 11 Apr 2018 20:34:43 +0200 Message-Id: <20180411183628.637960764@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180411183622.305902791@linuxfoundation.org> References: <20180411183622.305902791@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?1597477475657950152?= X-GMAIL-MSGID: =?utf-8?q?1597477475657950152?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-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);