linux-kernel - BCM2048 bluetooth connected over OMAP serial

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Message-ID: <20141210164333.GA3154@amd>
Date:	Wed, 10 Dec 2014 17:43:33 +0100
From:	Pavel Machek <pavel@....cz>
To:	pali.rohar@...il.com, sre@...ian.org, sre@...g0.de,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
	aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
	devicetree@...r.kernel.org, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org
Subject: BCM2048 bluetooth connected over OMAP serial

Hi!

So, there's bluetooth chip that's connected to the SoC by UART and some
GPIOs. What would be right representation in the device tree?
Something like this?

	bluetooth {
                  compatible = "broadcom,bcm2048";
                  uart = <&uart2>;
                  reset-gpios = <&gpio3 27 GPIO_ACTIVE_HIGH>; /* want 91 */
                  host-wakeup-gpios = <&gpio4 5 GPIO_ACTIVE_HIGH>; /* want 101 */
	          bluetooth-wakeup-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>; /* want 37 */
                  chip-type = <3>;
                  bt-sysclk = <2>;
                  reset-gpio-shared = <0>;
        };

Is there some way to prevent OMAP tty driver from binding to the
device and exporting the device to userspace?

Best regards,
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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