--- /dev/null
- "arm,gic-400"
+ * ARM Generic Interrupt Controller
+
+ ARM SMP cores are often associated with a GIC, providing per processor
+ interrupts (PPI), shared processor interrupts (SPI) and software
+ generated interrupts (SGI).
+
+ Primary GIC is attached directly to the CPU and typically has PPIs and SGIs.
+ Secondary GICs are cascaded into the upward interrupt controller and do not
+ have PPIs or SGIs.
+
+ Main node required properties:
+
+ - compatible : should be one of:
- "arm,cortex-a9-gic"
++ "arm,arm1176jzf-devchip-gic"
++ "arm,arm11mp-gic"
+ "arm,cortex-a15-gic"
- "arm,arm11mp-gic"
+ "arm,cortex-a7-gic"
- "arm,arm1176jzf-devchip-gic"
++ "arm,cortex-a9-gic"
++ "arm,gic-400"
++ "arm,pl390"
+ "brcm,brahma-b15-gic"
+ "qcom,msm-8660-qgic"
+ "qcom,msm-qgic2"
+ - interrupt-controller : Identifies the node as an interrupt controller
+ - #interrupt-cells : Specifies the number of cells needed to encode an
+ interrupt source. The type shall be a <u32> and the value shall be 3.
+
+ The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
+ interrupts.
+
+ The 2nd cell contains the interrupt number for the interrupt type.
+ SPI interrupts are in the range [0-987]. PPI interrupts are in the
+ range [0-15].
+
+ The 3rd cell is the flags, encoded as follows:
+ bits[3:0] trigger type and level flags.
+ 1 = low-to-high edge triggered
+ 2 = high-to-low edge triggered (invalid for SPIs)
+ 4 = active high level-sensitive
+ 8 = active low level-sensitive (invalid for SPIs).
+ bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of
+ the 8 possible cpus attached to the GIC. A bit set to '1' indicated
+ the interrupt is wired to that CPU. Only valid for PPI interrupts.
+ Also note that the configurability of PPI interrupts is IMPLEMENTATION
+ DEFINED and as such not guaranteed to be present (most SoC available
+ in 2014 seem to ignore the setting of this flag and use the hardware
+ default value).
+
+ - reg : Specifies base physical address(s) and size of the GIC registers. The
+ first region is the GIC distributor register base and size. The 2nd region is
+ the GIC cpu interface register base and size.
+
+ Optional
+ - interrupts : Interrupt source of the parent interrupt controller on
+ secondary GICs, or VGIC maintenance interrupt on primary GIC (see
+ below).
+
+ - cpu-offset : per-cpu offset within the distributor and cpu interface
+ regions, used when the GIC doesn't have banked registers. The offset is
+ cpu-offset * cpu-nr.
+
++- clocks : List of phandle and clock-specific pairs, one for each entry
++ in clock-names.
++- clock-names : List of names for the GIC clock input(s). Valid clock names
++ depend on the GIC variant:
++ "ic_clk" (for "arm,arm11mp-gic")
++ "PERIPHCLKEN" (for "arm,cortex-a15-gic")
++ "PERIPHCLK", "PERIPHCLKEN" (for "arm,cortex-a9-gic")
++ "clk" (for "arm,gic-400")
++ "gclk" (for "arm,pl390")
++
++- power-domains : A phandle and PM domain specifier as defined by bindings of
++ the power controller specified by phandle, used when the GIC
++ is part of a Power or Clock Domain.
++
++
+ Example:
+
+ intc: interrupt-controller@fff11000 {
+ compatible = "arm,cortex-a9-gic";
+ #interrupt-cells = <3>;
+ #address-cells = <1>;
+ interrupt-controller;
+ reg = <0xfff11000 0x1000>,
+ <0xfff10100 0x100>;
+ };
+
+
+ * GIC virtualization extensions (VGIC)
+
+ For ARM cores that support the virtualization extensions, additional
+ properties must be described (they only exist if the GIC is the
+ primary interrupt controller).
+
+ Required properties:
+
+ - reg : Additional regions specifying the base physical address and
+ size of the VGIC registers. The first additional region is the GIC
+ virtual interface control register base and size. The 2nd additional
+ region is the GIC virtual cpu interface register base and size.
+
+ - interrupts : VGIC maintenance interrupt.
+
+ Example:
+
+ interrupt-controller@2c001000 {
+ compatible = "arm,cortex-a15-gic";
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ reg = <0x2c001000 0x1000>,
+ <0x2c002000 0x1000>,
+ <0x2c004000 0x2000>,
+ <0x2c006000 0x2000>;
+ interrupts = <1 9 0xf04>;
+ };
+
+
+ * GICv2m extension for MSI/MSI-x support (Optional)
+
+ Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).
+ This is enabled by specifying v2m sub-node(s).
+
+ Required properties:
+
+ - compatible : The value here should contain "arm,gic-v2m-frame".
+
+ - msi-controller : Identifies the node as an MSI controller.
+
+ - reg : GICv2m MSI interface register base and size
+
+ Optional properties:
+
+ - arm,msi-base-spi : When the MSI_TYPER register contains an incorrect
+ value, this property should contain the SPI base of
+ the MSI frame, overriding the HW value.
+
+ - arm,msi-num-spis : When the MSI_TYPER register contains an incorrect
+ value, this property should contain the number of
+ SPIs assigned to the frame, overriding the HW value.
+
+ Example:
+
+ interrupt-controller@e1101000 {
+ compatible = "arm,gic-400";
+ #interrupt-cells = <3>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ interrupt-controller;
+ interrupts = <1 8 0xf04>;
+ ranges = <0 0 0 0xe1100000 0 0x100000>;
+ reg = <0x0 0xe1110000 0 0x01000>,
+ <0x0 0xe112f000 0 0x02000>,
+ <0x0 0xe1140000 0 0x10000>,
+ <0x0 0xe1160000 0 0x10000>;
+ v2m0: v2m@0x8000 {
+ compatible = "arm,gic-v2m-frame";
+ msi-controller;
+ reg = <0x0 0x80000 0 0x1000>;
+ };
+
+ ....
+
+ v2mN: v2m@0x9000 {
+ compatible = "arm,gic-v2m-frame";
+ msi-controller;
+ reg = <0x0 0x90000 0 0x1000>;
+ };
+ };
--- /dev/null
+ Binding for Qualcomm PM8941 WLED driver
+
+ Required properties:
+ - compatible: should be "qcom,pm8941-wled"
+ - reg: slave address
+
+ Optional properties:
++- default-brightness: brightness value on boot, value from: 0-4095
++ default: 2048
+ - label: The name of the backlight device
+ - qcom,cs-out: bool; enable current sink output
+ - qcom,cabc: bool; enable content adaptive backlight control
+ - qcom,ext-gen: bool; use externally generated modulator signal to dim
+ - qcom,current-limit: mA; per-string current limit; value from 0 to 25
+ default: 20mA
+ - qcom,current-boost-limit: mA; boost current limit; one of:
+ 105, 385, 525, 805, 980, 1260, 1400, 1680
+ default: 805mA
+ - qcom,switching-freq: kHz; switching frequency; one of:
+ 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371,
+ 1600, 1920, 2400, 3200, 4800, 9600,
+ default: 1600kHz
+ - qcom,ovp: V; Over-voltage protection limit; one of:
+ 27, 29, 32, 35
+ default: 29V
+ - qcom,num-strings: #; number of led strings attached; value from 1 to 3
+ default: 2
+
+ Example:
+
+ pm8941-wled@d800 {
+ compatible = "qcom,pm8941-wled";
+ reg = <0xd800>;
+ label = "backlight";
+
+ qcom,cs-out;
+ qcom,current-limit = <20>;
+ qcom,current-boost-limit = <805>;
+ qcom,switching-freq = <1600>;
+ qcom,ovp = <29>;
+ qcom,num-strings = <2>;
+ };
extern int of_irq_get_byname(struct device_node *dev, const char *name);
extern int of_irq_to_resource_table(struct device_node *dev,
struct resource *res, int nr_irqs);
+extern struct irq_domain *of_msi_get_domain(struct device *dev,
+ struct device_node *np,
+ enum irq_domain_bus_token token);
+extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
+ u32 rid);
+ extern void of_msi_configure(struct device *dev, struct device_node *np);
#else
static inline int of_irq_count(struct device_node *dev)
{
{
return 0;
}
+static inline struct irq_domain *of_msi_get_domain(struct device *dev,
+ struct device_node *np,
+ enum irq_domain_bus_token token)
+{
+ return NULL;
+}
+static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
+ u32 rid)
+{
+ return NULL;
+}
+ static inline void of_msi_configure(struct device *dev, struct device_node *np)
+ {
+ }
#endif
- #if defined(CONFIG_OF)
+ #if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC)
/*
* irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
* implements it differently. However, the prototype is the same for all,
* so declare it here regardless of the CONFIG_OF_IRQ setting.
*/
extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
- extern struct device_node *of_irq_find_parent(struct device_node *child);
- extern void of_msi_configure(struct device *dev, struct device_node *np);
+u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in);
- #else /* !CONFIG_OF */
+ #else /* !CONFIG_OF && !CONFIG_SPARC */
static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
int index)
{
return 0;
}
- static inline void *of_irq_find_parent(struct device_node *child)
- {
- return NULL;
- }
-
+
+static inline u32 of_msi_map_rid(struct device *dev,
+ struct device_node *msi_np, u32 rid_in)
+{
+ return rid_in;
+}
#endif /* !CONFIG_OF */
#endif /* __OF_IRQ_H */
projects / cascardo / linux.git / commitdiff