diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2014-09-30 12:55:48 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-09-30 19:17:14 +0200 |
| commit | a0196d111707d8b79196a40295f3935c5fa339eb (patch) | |
| tree | 212133ad4f485b3ca9352d8638316b2485644e33 | |
| parent | bcma: register bcma as device tree driver (diff) | |
| download | linux-a0196d111707d8b79196a40295f3935c5fa339eb.tar.xz linux-a0196d111707d8b79196a40295f3935c5fa339eb.zip | |
bcma: use chipcommon node from DT for SoC GPIO chip
This will allow us to define GPIO-attached devices (LEDs, buttons) in
the the device tree.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | Documentation/devicetree/bindings/bus/bcma.txt | 12 | ||||
| -rw-r--r-- | drivers/bcma/driver_gpio.c | 4 |
2 files changed, 16 insertions, 0 deletions
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 @@ -218,6 +218,10 @@ int bcma_gpio_init(struct bcma_drv_cc *cc) #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: case BCMA_CHIP_ID_BCM53572: |