From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Subject: [PATCH] bcma: use device from DT (brcm,bus-gpio) for SoC GPIO chip Date: Fri, 26 Sep 2014 16:28:53 +0200 Message-ID: <1411741733-13888-1-git-send-email-zajec5@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "John W. Linville" , linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Hauke Mehrtens , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= List-Id: devicetree@vger.kernel.org This will allow us to define GPIO-attached devices (LEDs, buttons) in the the device tree. Signed-off-by: Rafa=C5=82 Mi=C5=82ecki --- This is based on top of [PATCH v6] bcma: register bcma as device tree driver that I hope will reach wireless-next git tree. --- Documentation/devicetree/bindings/bus/bcma.txt | 15 +++++++++++++++ drivers/bcma/driver_gpio.c | 5 +++++ 2 files changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/bus/bcma.txt b/Documenta= tion/devicetree/bindings/bus/bcma.txt index e9070c1..f1b381e 100644 --- a/Documentation/devicetree/bindings/bus/bcma.txt +++ b/Documentation/devicetree/bindings/bus/bcma.txt @@ -6,6 +6,15 @@ Required properties: =20 - reg : iomem address range of chipcommon core =20 +The top-level axi bus may contain following children: + +- gpio: GPIO chip on the SoC + + Required properties: + - compatible: "brcm,bus-gpio" + - gpio-controller : makes the node a GPIO controller + - #gpio-cells : size of the GPIO specifier, must be 2 + The cores on the AXI bus are automatically detected by bcma with the memory ranges they are using and they get registered afterwards. =20 @@ -17,4 +26,10 @@ Example: ranges =3D <0x00000000 0x18000000 0x00100000>; #address-cells =3D <1>; #size-cells =3D <1>; + + gpio@0 { + compatible =3D "brcm,bus-gpio"; + gpio-controller; + #gpio-cells =3D <2>; + }; }; diff --git a/drivers/bcma/driver_gpio.c b/drivers/bcma/driver_gpio.c index 8ea497c..7ae39a8 100644 --- a/drivers/bcma/driver_gpio.c +++ b/drivers/bcma/driver_gpio.c @@ -218,6 +218,11 @@ int bcma_gpio_init(struct bcma_drv_cc *cc) #if IS_BUILTIN(CONFIG_BCM47XX) chip->to_irq =3D bcma_gpio_to_irq; #endif +#if IS_BUILTIN(CONFIG_OF) + if (cc->core->bus->hosttype =3D=3D BCMA_HOSTTYPE_SOC) + chip->of_node =3D of_find_compatible_node(NULL, NULL, + "brcm,bus-gpio"); +#endif switch (cc->core->bus->chipinfo.id) { case BCMA_CHIP_ID_BCM5357: case BCMA_CHIP_ID_BCM53572: --=20 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-wireles= s" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html