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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/reset/sirf,rstc.txt | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/devicetree/bindings/reset/sirf,rstc.txt | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reset/sirf,rstc.txt b/Documentation/devicetree/bindings/reset/sirf,rstc.txt new file mode 100644 index 000000000..0505de742 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/sirf,rstc.txt @@ -0,0 +1,42 @@ +CSR SiRFSoC Reset Controller +====================================== + +Please also refer to reset.txt in this directory for common reset +controller binding usage. + +Required properties: +- compatible: Should be "sirf,prima2-rstc" or "sirf,marco-rstc" +- reg: should be register base and length as documented in the + datasheet +- #reset-cells: 1, see below + +example: + +rstc: reset-controller@88010000 { + compatible = "sirf,prima2-rstc"; + reg = <0x88010000 0x1000>; + #reset-cells = <1>; +}; + +Specifying reset lines connected to IP modules +============================================== + +The reset controller(rstc) manages various reset sources. This module provides +reset signals for most blocks in system. Those device nodes should specify the +reset line on the rstc in their resets property, containing a phandle to the +rstc device node and a RESET_INDEX specifying which module to reset, as described +in reset.txt. + +For SiRFSoC, RESET_INDEX is just reset_bit defined in SW_RST0 and SW_RST1 registers. +For modules whose rest_bit is in SW_RST0, its RESET_INDEX is 0~31. For modules whose +rest_bit is in SW_RST1, its RESET_INDEX is 32~63. + +example: + +vpp@90020000 { + compatible = "sirf,prima2-vpp"; + reg = <0x90020000 0x10000>; + interrupts = <31>; + clocks = <&clks 35>; + resets = <&rstc 6>; +}; |