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Diffstat (limited to 'Documentation/devicetree/bindings/soc/rockchip/grf.txt')
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1 files changed, 61 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.txt b/Documentation/devicetree/bindings/soc/rockchip/grf.txt new file mode 100644 index 000000000..f96511aa3 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/rockchip/grf.txt @@ -0,0 +1,61 @@ +* Rockchip General Register Files (GRF) + +The general register file will be used to do static set by software, which +is composed of many registers for system control. + +From RK3368 SoCs, the GRF is divided into two sections, +- GRF, used for general non-secure system, +- SGRF, used for general secure system, +- PMUGRF, used for always on system + +On RK3328 SoCs, the GRF adds a section for USB2PHYGRF, + +ON RK3308 SoC, the GRF is divided into four sections: +- GRF, used for general non-secure system, +- SGRF, used for general secure system, +- DETECTGRF, used for audio codec system, +- COREGRF, used for pvtm, + +Required Properties: + +- compatible: GRF should be one of the following: + - "rockchip,px30-grf", "syscon": for px30 + - "rockchip,rk3036-grf", "syscon": for rk3036 + - "rockchip,rk3066-grf", "syscon": for rk3066 + - "rockchip,rk3188-grf", "syscon": for rk3188 + - "rockchip,rk3228-grf", "syscon": for rk3228 + - "rockchip,rk3288-grf", "syscon": for rk3288 + - "rockchip,rk3308-grf", "syscon": for rk3308 + - "rockchip,rk3328-grf", "syscon": for rk3328 + - "rockchip,rk3368-grf", "syscon": for rk3368 + - "rockchip,rk3399-grf", "syscon": for rk3399 + - "rockchip,rv1108-grf", "syscon": for rv1108 +- compatible: DETECTGRF should be one of the following: + - "rockchip,rk3308-detect-grf", "syscon": for rk3308 +- compatilbe: COREGRF should be one of the following: + - "rockchip,rk3308-core-grf", "syscon": for rk3308 +- compatible: PMUGRF should be one of the following: + - "rockchip,px30-pmugrf", "syscon": for px30 + - "rockchip,rk3368-pmugrf", "syscon": for rk3368 + - "rockchip,rk3399-pmugrf", "syscon": for rk3399 +- compatible: SGRF should be one of the following: + - "rockchip,rk3288-sgrf", "syscon": for rk3288 +- compatible: USB2PHYGRF should be one of the following: + - "rockchip,px30-usb2phy-grf", "syscon": for px30 + - "rockchip,rk3328-usb2phy-grf", "syscon": for rk3328 +- compatible: USBGRF should be one of the following: + - "rockchip,rv1108-usbgrf", "syscon": for rv1108 +- reg: physical base address of the controller and length of memory mapped + region. + +Example: GRF and PMUGRF of RK3399 SoCs + + pmugrf: syscon@ff320000 { + compatible = "rockchip,rk3399-pmugrf", "syscon"; + reg = <0x0 0xff320000 0x0 0x1000>; + }; + + grf: syscon@ff770000 { + compatible = "rockchip,rk3399-grf", "syscon"; + reg = <0x0 0xff770000 0x0 0x10000>; + }; |