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111 files changed, 6416 insertions, 1612 deletions
diff --git a/Documentation/DMA-attributes.txt b/Documentation/DMA-attributes.txt index 6d772f84b47..b768cc0e402 100644 --- a/Documentation/DMA-attributes.txt +++ b/Documentation/DMA-attributes.txt @@ -22,3 +22,12 @@ ready and available in memory. The DMA of the "completion indication" could race with data DMA. Mapping the memory used for completion indications with DMA_ATTR_WRITE_BARRIER would prevent the race. +DMA_ATTR_WEAK_ORDERING +---------------------- + +DMA_ATTR_WEAK_ORDERING specifies that reads and writes to the mapping +may be weakly ordered, that is that reads and writes may pass each other. + +Since it is optional for platforms to implement DMA_ATTR_WEAK_ORDERING, +those that do not will simply ignore the attribute and exhibit default +behavior. diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index aee243a846a..ea1b70b3579 100644 --- a/Documentation/powerpc/booting-without-of.txt +++ b/Documentation/powerpc/booting-without-of.txt @@ -89,10 +89,12 @@ Table of Contents 3) OpenPIC Interrupt Controllers 4) ISA Interrupt Controllers - VIII - Specifying GPIO information for devices + IX - Specifying GPIO information for devices 1) gpios property 2) gpio-controller nodes + X - Specifying device power management information (sleep property) + Appendix A - Sample SOC node for MPC8540 @@ -2488,8 +2490,8 @@ encodings listed below: 2 = high to low edge sensitive type enabled 3 = low to high edge sensitive type enabled -VIII - Specifying GPIO information for devices -============================================== +IX - Specifying GPIO information for devices +============================================ 1) gpios property ----------------- @@ -2537,116 +2539,151 @@ Example of two SOC GPIO banks defined as gpio-controller nodes: gpio-controller; }; +X - Specifying Device Power Management Information (sleep property) +=================================================================== + +Devices on SOCs often have mechanisms for placing devices into low-power +states that are decoupled from the devices' own register blocks. Sometimes, +this information is more complicated than a cell-index property can +reasonably describe. Thus, each device controlled in such a manner +may contain a "sleep" property which describes these connections. + +The sleep property consists of one or more sleep resources, each of +which consists of a phandle to a sleep controller, followed by a +controller-specific sleep specifier of zero or more cells. + +The semantics of what type of low power modes are possible are defined +by the sleep controller. Some examples of the types of low power modes +that may be supported are: + + - Dynamic: The device may be disabled or enabled at any time. + - System Suspend: The device may request to be disabled or remain + awake during system suspend, but will not be disabled until then. + - Permanent: The device is disabled permanently (until the next hard + reset). + +Some devices may share a clock domain with each other, such that they should +only be suspended when none of the devices are in use. Where reasonable, +such nodes should be placed on a virtual bus, where the bus has the sleep +property. If the clock domain is shared among devices that cannot be +reasonably grouped in this manner, then create a virtual sleep controller +(similar to an interrupt nexus, except that defining a standardized +sleep-map should wait until its necessity is demonstrated). + Appendix A - Sample SOC node for MPC8540 ======================================== -Note that the #address-cells and #size-cells for the SoC node -in this example have been explicitly listed; these are likely -not necessary as they are usually the same as the root node. - - soc8540@e0000000 { + soc@e0000000 { #address-cells = <1>; #size-cells = <1>; - #interrupt-cells = <2>; + compatible = "fsl,mpc8540-ccsr", "simple-bus"; device_type = "soc"; - ranges = <00000000 e0000000 00100000> - reg = <e0000000 00003000>; + ranges = <0x00000000 0xe0000000 0x00100000> bus-frequency = <0>; - - mdio@24520 { - reg = <24520 20>; - device_type = "mdio"; - compatible = "gianfar"; - - ethernet-phy@0 { - linux,phandle = <2452000> - interrupt-parent = <40000>; - interrupts = <35 1>; - reg = <0>; - device_type = "ethernet-phy"; - }; - - ethernet-phy@1 { - linux,phandle = <2452001> - interrupt-parent = <40000>; - interrupts = <35 1>; - reg = <1>; - device_type = "ethernet-phy"; - }; - - ethernet-phy@3 { - linux,phandle = <2452002> - interrupt-parent = <40000>; - interrupts = <35 1>; - reg = <3>; - device_type = "ethernet-phy"; - }; - - }; + interrupt-parent = <&pic>; ethernet@24000 { - #size-cells = <0>; + #address-cells = <1>; + #size-cells = <1>; device_type = "network"; model = "TSEC"; - compatible = "gianfar"; - reg = <24000 1000>; - mac-address = [ 00 E0 0C 00 73 00 ]; - interrupts = <d 3 e 3 12 3>; - interrupt-parent = <40000>; - phy-handle = <2452000>; + compatible = "gianfar", "simple-bus"; + reg = <0x24000 0x1000>; + local-mac-address = [ 00 E0 0C 00 73 00 ]; + interrupts = <29 2 30 2 34 2>; + phy-handle = <&phy0>; + sleep = <&pmc 00000080>; + ranges; + + mdio@24520 { + reg = <0x24520 0x20>; + compatible = "fsl,gianfar-mdio"; + + phy0: ethernet-phy@0 { + interrupts = <5 1>; + reg = <0>; + device_type = "ethernet-phy"; + }; + + phy1: ethernet-phy@1 { + interrupts = <5 1>; + reg = <1>; + device_type = "ethernet-phy"; + }; + + phy3: ethernet-phy@3 { + interrupts = <7 1>; + reg = <3>; + device_type = "ethernet-phy"; + }; + }; }; ethernet@25000 { - #address-cells = <1>; - #size-cells = <0>; device_type = "network"; model = "TSEC"; compatible = "gianfar"; - reg = <25000 1000>; - mac-address = [ 00 E0 0C 00 73 01 ]; - interrupts = <13 3 14 3 18 3>; - interrupt-parent = <40000>; - phy-handle = <2452001>; + reg = <0x25000 0x1000>; + local-mac-address = [ 00 E0 0C 00 73 01 ]; + interrupts = <13 2 14 2 18 2>; + phy-handle = <&phy1>; + sleep = <&pmc 00000040>; }; ethernet@26000 { - #address-cells = <1>; - #size-cells = <0>; device_type = "network"; model = "FEC"; compatible = "gianfar"; - reg = <26000 1000>; - mac-address = [ 00 E0 0C 00 73 02 ]; - interrupts = <19 3>; - interrupt-parent = <40000>; - phy-handle = <2452002>; + reg = <0x26000 0x1000>; + local-mac-address = [ 00 E0 0C 00 73 02 ]; + interrupts = <41 2>; |