| Message ID | 20190311063458.137473-2-pihsun@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add support for mt8183 SCP. | expand |
On Mon, 11 Mar 2019 14:34:52 +0800, Pi-Hsun Shih wrote: > From: Erin Lo <erin.lo@mediatek.com> > > Add a DT binding documentation of SCP for the > MT8183 SoC from Mediatek. > > Signed-off-by: Erin Lo <erin.lo@mediatek.com> > --- > Changes from v5: > - Remove dependency on CONFIG_RPMSG_MTK_SCP. > > Changes from v4: > - Add detail of more properties. > - Document the usage of mtk,rpmsg-name in subnode from the new design. > > Changes from v3: > - No change. > > Changes from v2: > - No change. I realized that for this patch series, there's no need to > add anything under the mt8183-scp node (neither the mt8183-rpmsg or > the cros-ec-rpmsg) for them to work, since mt8183-rpmsg is added > directly as a rproc_subdev by code, and cros-ec-rpmsg is dynamically > created by SCP name service. > > Changes from v1: > - No change. > --- > .../bindings/remoteproc/mtk,scp.txt | 36 +++++++++++++++++++ > 1 file changed, 36 insertions(+) > create mode 100644 Documentation/devicetree/bindings/remoteproc/mtk,scp.txt > Please add Acked-by/Reviewed-by tags when posting new versions. However, there's no need to repost patches *only* to add the tags. The upstream maintainer will do that for acks received on the version they apply. If a tag was not added on purpose, please state why and what changed.
diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.txt b/Documentation/devicetree/bindings/remoteproc/mtk,scp.txt new file mode 100644 index 000000000000..3ba668bab14b --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/mtk,scp.txt @@ -0,0 +1,36 @@ +Mediatek SCP Bindings +---------------------------------------- + +This binding provides support for ARM Cortex M4 Co-processor found on some +Mediatek SoCs. + +Required properties: +- compatible Should be "mediatek,mt8183-scp" +- reg Should contain the address ranges for the two memory + regions, SRAM and CFG. +- reg-names Contains the corresponding names for the two memory + regions. These should be named "sram" & "cfg". +- clocks Clock for co-processor (See: ../clock/clock-bindings.txt) +- clock-names Contains the corresponding name for the clock. This + should be named "main". + +Subnodes +-------- + +Subnodes of the SCP represent rpmsg devices. The names of the devices are not +important. The properties of these nodes are defined by the individual bindings +for the rpmsg devices - but must contain the following property: + +- mtk,rpmsg-name Contains the name for the rpmsg device. Used to match + the subnode to rpmsg device announced by SCP. + +Example: + + scp: scp@10500000 { + compatible = "mediatek,mt8183-scp"; + reg = <0 0x10500000 0 0x80000>, + <0 0x105c0000 0 0x5000>; + reg-names = "sram", "cfg"; + clocks = <&infracfg CLK_INFRA_SCPSYS>; + clock-names = "main"; + };