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author | Chris Zhong <zyw@rock-chips.com> | 2014-12-01 16:52:18 +0800 |
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committer | Heiko Stuebner <heiko@sntech.de> | 2014-12-31 16:16:54 +0100 |
commit | 6744e2527ce7a3830023cec69bb2f91cf16b53ca (patch) | |
tree | 751cbddf6e55863efbefece8a9ee3d649f08e6cf /Documentation | |
parent | 9c1ec8e18c210092418d27278a742a2a98eafffe (diff) | |
download | linux-6744e2527ce7a3830023cec69bb2f91cf16b53ca.tar.gz linux-6744e2527ce7a3830023cec69bb2f91cf16b53ca.tar.bz2 linux-6744e2527ce7a3830023cec69bb2f91cf16b53ca.zip |
ARM: rockchip: Add pmu-sram binding
The pmu-sram is used to store resume code, suspend/resume need get the
address of it. Therefore add a binding and documentation for it.
Signed-off-by: Tony Xie <xxx@rock-chips.com>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt b/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt new file mode 100644 index 000000000000..6b42fda306ff --- /dev/null +++ b/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt @@ -0,0 +1,16 @@ +Rockchip SRAM for pmu: +------------------------------ + +The sram of pmu is used to store the function of resume from maskrom(the 1st +level loader). This is a common use of the "pmu-sram" because it keeps power +even in low power states in the system. + +Required node properties: +- compatible : should be "rockchip,rk3288-pmu-sram" +- reg : physical base address and the size of the registers window + +Example: + sram@ff720000 { + compatible = "rockchip,rk3288-pmu-sram", "mmio-sram"; + reg = <0xff720000 0x1000>; + }; |