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author | Arnd Bergmann <arnd@arndb.de> | 2018-10-10 13:41:16 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2018-10-10 13:41:22 +0200 |
commit | f7d87826fe482dbe4b0675f99c1eae2890a2d8fb (patch) | |
tree | 2640aec2ab83e9958930a7ba9b1738ed5103355e /Documentation/devicetree/bindings/reset | |
parent | b0a2cea5eb637d540ba86fd31dfd750f26ee0161 (diff) | |
parent | b790c8ea5593d6dc3580adfad8e117eeb56af874 (diff) | |
download | linux-f7d87826fe482dbe4b0675f99c1eae2890a2d8fb.tar.bz2 |
Merge tag 'reset-for-4.20' of git://git.pengutronix.de/git/pza/linux into next/drivers
Reset controller changes for v4.20
This adds a new driver for the PDC Global (Power Domain Controller)
reset controller found on Qualcomm SDM845 SoCs, fixes a potential
use-after-free issue in reset_controller_dev.of_xlate() callbacks
from __of_reset_control_get(), and trivially fixes a documentation
grammar issue.
* tag 'reset-for-4.20' of git://git.pengutronix.de/git/pza/linux:
reset: Fix potential use-after-free in __of_reset_control_get()
reset: qcom: PDC Global (Power Domain Controller) reset controller
dt-bindings: reset: Add PDC Global binding for SDM845 SoCs
reset: Grammar s/more then once/more than once/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/reset')
-rw-r--r-- | Documentation/devicetree/bindings/reset/qcom,pdc-global.txt | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reset/qcom,pdc-global.txt b/Documentation/devicetree/bindings/reset/qcom,pdc-global.txt new file mode 100644 index 000000000000..a62a492843e7 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/qcom,pdc-global.txt @@ -0,0 +1,52 @@ +PDC Global +====================================== + +This binding describes a reset-controller found on PDC-Global (Power Domain +Controller) block for Qualcomm Technologies Inc SDM845 SoCs. + +Required properties: +- compatible: + Usage: required + Value type: <string> + Definition: must be: + "qcom,sdm845-pdc-global" + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: must specify the base address and size of the register + space. + +- #reset-cells: + Usage: required + Value type: <uint> + Definition: must be 1; cell entry represents the reset index. + +Example: + +pdc_reset: reset-controller@b2e0000 { + compatible = "qcom,sdm845-pdc-global"; + reg = <0xb2e0000 0x20000>; + #reset-cells = <1>; +}; + +PDC reset clients +====================================== + +Device nodes that need access to reset lines should +specify them as a reset phandle in their corresponding node as +specified in reset.txt. + +For a list of all valid reset indices see +<dt-bindings/reset/qcom,sdm845-pdc.h> + +Example: + +modem-pil@4080000 { + ... + + resets = <&pdc_reset PDC_MODEM_SYNC_RESET>; + reset-names = "pdc_reset"; + + ... +}; |