From a0196d111707d8b79196a40295f3935c5fa339eb Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 30 Sep 2014 12:55:48 +0200 Subject: [PATCH] bcma: use chipcommon node from DT for SoC GPIO chip MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This will allow us to define GPIO-attached devices (LEDs, buttons) in the the device tree. Signed-off-by: Rafał Miłecki Acked-by: Arnd Bergmann Signed-off-by: John W. Linville --- Documentation/devicetree/bindings/bus/bcma.txt | 12 ++++++++++++ drivers/bcma/driver_gpio.c | 4 ++++ 2 files changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/bus/bcma.txt b/Documentation/devicetree/bindings/bus/bcma.txt index e9070c161172..62a48348ac15 100644 --- a/Documentation/devicetree/bindings/bus/bcma.txt +++ b/Documentation/devicetree/bindings/bus/bcma.txt @@ -9,6 +9,11 @@ Required properties: The cores on the AXI bus are automatically detected by bcma with the memory ranges they are using and they get registered afterwards. +The top-level axi bus may contain children representing attached cores +(devices). This is needed since some hardware details can't be auto +detected (e.g. IRQ numbers). Also some of the cores may be responsible +for extra things, e.g. ChipCommon providing access to the GPIO chip. + Example: axi@18000000 { @@ -17,4 +22,11 @@ Example: ranges = <0x00000000 0x18000000 0x00100000>; #address-cells = <1>; #size-cells = <1>; + + chipcommon { + reg = <0x00000000 0x1000>; + + gpio-controller; + #gpio-cells = <2>; + }; }; diff --git a/drivers/bcma/driver_gpio.c b/drivers/bcma/driver_gpio.c index 8ea497c73506..57ce5fe65364 100644 --- a/drivers/bcma/driver_gpio.c +++ b/drivers/bcma/driver_gpio.c @@ -217,6 +217,10 @@ int bcma_gpio_init(struct bcma_drv_cc *cc) chip->direction_output = bcma_gpio_direction_output; #if IS_BUILTIN(CONFIG_BCM47XX) chip->to_irq = bcma_gpio_to_irq; +#endif +#if IS_BUILTIN(CONFIG_OF) + if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC) + chip->of_node = cc->core->dev.of_node; #endif switch (cc->core->bus->chipinfo.id) { case BCMA_CHIP_ID_BCM5357: -- 2.20.1