diff options
| -rw-r--r-- | Documentation/devicetree/bindings/resource-names.txt | 54 | ||||
| -rw-r--r-- | drivers/of/address.c | 16 | ||||
| -rw-r--r-- | drivers/of/irq.c | 11 | ||||
| -rw-r--r-- | drivers/spi/Kconfig | 3 |
4 files changed, 76 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/resource-names.txt b/Documentation/devicetree/bindings/resource-names.txt new file mode 100644 index 00000000000..e280fef6f26 --- /dev/null +++ b/Documentation/devicetree/bindings/resource-names.txt @@ -0,0 +1,54 @@ +Some properties contain an ordered list of 1 or more datum which are +normally accessed by index. However, some devices will have multiple +values which are more naturally accessed by name. Device nodes can +include a supplemental property for assigning names to each of the list +items. The names property consists of a list of strings in the same +order as the data in the resource property. + +The following supplemental names properties are defined. + +Resource Property Supplemental Names Property +----------------- --------------------------- +reg reg-names +clocks clock-names +interrupts interrupt-names + +Usage: + +The -names property must be used in conjunction with the normal resource +property. If not it will be ignored. + +Examples: + +l4-abe { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <1>; + ranges = <0 0 0x48000000 0x00001000>, /* MPU path */ + <1 0 0x49000000 0x00001000>; /* L3 path */ + mcasp { + compatible = "ti,mcasp"; + reg = <0 0x10 0x10>, <0 0x20 0x10>, + <1 0x10 0x10>, <1 0x20 0x10>; + reg-names = "mpu", "dat", + "dma", "dma_dat"; + interrupts = <11>, <12>; + interrupt-names = "rx", "tx"; + }; + + timer { + compatible = "ti,timer"; + reg = <0 0x40 0x10>, <1 0x40 0x10>; + reg-names = "mpu", "dma"; + }; +}; + + +usb { + compatible = "ti,usb-host"; + reg = <0x4a064000 0x800>, <0x4a064800 0x200>, + <0x4a064c00 0x200>; + reg-names = "config", "ohci", "ehci"; + interrupts = <14>, <15>; + interrupt-names = "ohci", "ehci"; +}; diff --git a/drivers/of/address.c b/drivers/of/address.c index 72c33fbe451..66d96f14c27 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -14,7 +14,7 @@ static struct of_bus *of_match_bus(struct device_node *np); static int __of_address_to_resource(struct device_node *dev, const __be32 *addrp, u64 size, unsigned int flags, - struct resource *r); + const char *name, struct resource *r); /* Debug utility */ #ifdef DEBUG @@ -215,7 +215,7 @@ int of_pci_address_to_resource(struct device_node *dev, int bar, addrp = of_get_pci_address(dev, bar, &size, &flags); if (addrp == NULL) return -EINVAL; - return __of_address_to_resource(dev, addrp, size, flags, r); + return __of_address_to_resource(dev, addrp, size, flags, NULL, r); } EXPORT_SYMBOL_GPL(of_pci_address_to_resource); #endif /* CONFIG_PCI */ @@ -529,7 +529,7 @@ EXPORT_SYMBOL(of_get_address); static int __of_address_to_resource(struct device_node *dev, const __be32 *addrp, u64 size, unsigned int flags, - struct resource *r) + const char *name, struct resource *r) { u64 taddr; @@ -551,7 +551,8 @@ static int __of_address_to_resource(struct device_node *dev, r->end = taddr + size - 1; } r->flags = flags; - r->name = dev->full_name; + r->name = name ? name : dev->full_name; + return 0; } @@ -569,11 +570,16 @@ int of_address_to_resource(struct device_node *dev, int index, const __be32 *addrp; u64 size; unsigned int flags; + const char *name = NULL; addrp = of_get_address(dev, index, &size, &flags); if (addrp == NULL) return -EINVAL; - return __of_address_to_resource(dev, addrp, size, flags, r); + + /* Get optional "reg-names" property to add a name to a resource */ + of_property_read_string_index(dev, "reg-names", index, &name); + + return __of_address_to_resource(dev, addrp, size, flags, name, r); } EXPORT_SYMBOL_GPL(of_address_to_resource); diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 0f0cfa3bca3..9cf00602f56 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -341,9 +341,18 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r) /* Only dereference the resource if both the * resource and the irq are valid. */ if (r && irq) { + const char *name = NULL; + + /* + * Get optional "interrupts-names" property to add a name + * to the resource. + */ + of_property_read_string_index(dev, "interrupt-names", index, + &name); + r->start = r->end = irq; r->flags = IORESOURCE_IRQ; - r->name = dev->full_name; + r->name = name ? name : dev->full_name; } return irq; diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 561a832417b..3f9a47ec67d 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -332,8 +332,7 @@ config SPI_STMP3XXX config SPI_TEGRA tristate "Nvidia Tegra SPI controller" - depends on ARCH_TEGRA - select TEGRA_SYSTEM_DMA + depends on ARCH_TEGRA && TEGRA_SYSTEM_DMA help SPI driver for NVidia Tegra SoCs |