diff options
Diffstat (limited to 'Documentation/devicetree/bindings/soc')
| -rw-r--r-- | Documentation/devicetree/bindings/soc/rockchip/grf.txt | 5 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt | 57 |
2 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.txt b/Documentation/devicetree/bindings/soc/rockchip/grf.txt index a0685c209218..cc9f05d3cbc1 100644 --- a/Documentation/devicetree/bindings/soc/rockchip/grf.txt +++ b/Documentation/devicetree/bindings/soc/rockchip/grf.txt @@ -8,6 +8,8 @@ From RK3368 SoCs, the GRF is divided into two sections, - SGRF, used for general secure system, - PMUGRF, used for always on system +On RK3328 SoCs, the GRF adds a section for USB2PHYGRF, + Required Properties: - compatible: GRF should be one of the following: @@ -16,6 +18,7 @@ Required Properties: - "rockchip,rk3188-grf", "syscon": for rk3188 - "rockchip,rk3228-grf", "syscon": for rk3228 - "rockchip,rk3288-grf", "syscon": for rk3288 + - "rockchip,rk3328-grf", "syscon": for rk3328 - "rockchip,rk3368-grf", "syscon": for rk3368 - "rockchip,rk3399-grf", "syscon": for rk3399 - compatible: PMUGRF should be one of the following: @@ -23,6 +26,8 @@ Required Properties: - "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 followings + - "rockchip,rk3328-usb2phy-grf", "syscon": for rk3328 - reg: physical base address of the controller and length of memory mapped region. diff --git a/Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt b/Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt new file mode 100644 index 000000000000..c705db07d820 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt @@ -0,0 +1,57 @@ +Texas Instruments TI-SCI Generic Power Domain +--------------------------------------------- + +Some TI SoCs contain a system controller (like the PMMC, etc...) that is +responsible for controlling the state of the IPs that are present. +Communication between the host processor running an OS and the system +controller happens through a protocol known as TI-SCI [1]. + +[1] Documentation/devicetree/bindings/arm/keystone/ti,sci.txt + +PM Domain Node +============== +The PM domain node represents the global PM domain managed by the PMMC, which +in this case is the implementation as documented by the generic PM domain +bindings in Documentation/devicetree/bindings/power/power_domain.txt. Because +this relies on the TI SCI protocol to communicate with the PMMC it must be a +child of the pmmc node. + +Required Properties: +-------------------- +- compatible: should be "ti,sci-pm-domain" +- #power-domain-cells: Must be 1 so that an id can be provided in each + device node. + +Example (K2G): +------------- + pmmc: pmmc { + compatible = "ti,k2g-sci"; + ... + + k2g_pds: power-controller { + compatible = "ti,sci-pm-domain"; + #power-domain-cells = <1>; + }; + }; + +PM Domain Consumers +=================== +Hardware blocks belonging to a PM domain should contain a "power-domains" +property that is a phandle pointing to the corresponding PM domain node +along with an index representing the device id to be passed to the PMMC +for device control. + +Required Properties: +-------------------- +- power-domains: phandle pointing to the corresponding PM domain node + and an ID representing the device. + +See dt-bindings/genpd/k2g.h for the list of valid identifiers for k2g. + +Example (K2G): +-------------------- + uart0: serial@02530c00 { + compatible = "ns16550a"; + ... + power-domains = <&k2g_pds K2G_DEV_UART0>; + }; |