From: Peter Shih <pihsun@chromium.org>
To: unlisted-recipients:; (no To-header on input)
Cc: Pi-Hsun Shih <pihsun@chromium.org>,
Erin Lo <erin.lo@mediatek.com>, Rob Herring <robh@kernel.org>,
Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
linux-remoteproc@vger.kernel.org (open list:REMOTE PROCESSOR
(REMOTEPROC) SUBSYSTEM),
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS),
linux-arm-kernel@lists.infradead.org (moderated
list:ARM/Mediatek SoC support),
linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek
SoC support), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v7 1/7] dt-bindings: Add a binding for Mediatek SCP
Date: Wed, 27 Mar 2019 13:14:43 +0800 [thread overview]
Message-ID: <20190327051450.16222-2-pihsun@chromium.org> (raw)
In-Reply-To: <20190327051450.16222-1-pihsun@chromium.org>
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>
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
---
Changes from v6:
- No change.
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
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";
+ };
--
2.21.0.392.gf8f6787159e-goog
next parent reply other threads:[~2019-03-27 5:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190327051450.16222-1-pihsun@chromium.org>
2019-03-27 5:14 ` Peter Shih [this message]
2019-03-27 5:14 ` [PATCH v7 2/7] remoteproc/mediatek: add SCP support for mt8183 Peter Shih
2019-03-27 5:14 ` [PATCH v7 3/7] remoteproc: mt8183: add reserved memory manager API Peter Shih
2019-03-27 5:14 ` [PATCH v7 4/7] rpmsg: add rpmsg support for mt8183 SCP Peter Shih
2019-03-27 5:14 ` [PATCH v7 5/7] dt-bindings: Add binding for cros-ec-rpmsg Peter Shih
2019-04-06 6:05 ` Rob Herring
2019-03-27 5:14 ` [PATCH v7 6/7] platform/chrome: cros_ec: add EC host command support using rpmsg Peter Shih
2019-03-28 11:15 ` Enric Balletbo Serra
2019-04-10 7:13 ` Pi-Hsun Shih
2019-04-11 10:27 ` Enric Balletbo Serra
2019-03-27 5:14 ` [PATCH v7 7/7] cros_ec: differentiate SCP from EC by feature bit Peter Shih
2019-03-28 10:54 ` Enric Balletbo Serra
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