A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
Code Issues Projects Releases Packages Wiki Activity

irqchip/mbigen: Adjust DT bindings to handle multiple devices in a module

Browse source 
A mbigen hardware module can contain more than one device node. These device
nodes contain the same register definition.

mbigen_dev1:intc_dev1 {
	...
	reg = <0x0 0xc0080000 0x0 0x10000>;
	...
};

mbigen_dev2:intc_dev2 {
	...
	reg = <0x0 0xc0080000 0x0 0x10000>;
	...
};

In this case both devices try to request the same resource resulting in a
resource conflict.

To address this problem the devices need to be subnodes of the mbigen hardware
module, which then contains the unique register space.

[ tglx: Massaged changelog ]

Suggested-by: Mark Rutland <[email protected]>
Signed-off-by: Ma Jun <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/20160203111602.GA1234@leverpostej
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
MaJun 2016-03-17 16:34:00 +08:00 • committed by Thomas Gleixner
commit d0e286415d
1 changed files with 17 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

22
Documentation/devicetree/bindings/interrupt-controller/hisilicon,mbigen-v2.txt
View file

@ -21,6 +21,8 @@ Mbigen main node required properties:
- reg: Specifies the base physical address and size of the Mbigen
registers.
Mbigen sub node required properties:
------------------------------------------
- interrupt controller: Identifies the node as an interrupt controller
- msi-parent: Specifies the MSI controller this mbigen use.
@ -45,13 +47,23 @@ Mbigen main node required properties:
Examples:
mbigen_device_gmac:intc {
mbigen_chip_dsa {
compatible = "hisilicon,mbigen-v2";
reg = <0x0 0xc0080000 0x0 0x10000>;
interrupt-controller;
msi-parent = <&its_dsa 0x40b1c>;
num-pins = <9>;
#interrupt-cells = <2>;
mbigen_gmac:intc_gmac {
interrupt-controller;
msi-parent = <&its_dsa 0x40b1c>;
num-pins = <9>;
#interrupt-cells = <2>;
};
mbigen_i2c:intc_i2c {
interrupt-controller;
msi-parent = <&its_dsa 0x40b0e>;
num-pins = <2>;
#interrupt-cells = <2>;
};
};
Devices connect to mbigen required properties: