linux-kernel - [PATCH v4 01/10] dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram

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Message-Id: <1551243109-10559-1-git-send-email-sugaya.taichi@socionext.com>
Date:   Wed, 27 Feb 2019 13:51:49 +0900
From:   Sugaya Taichi <sugaya.taichi@...ionext.com>
To:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        soc@...nel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Takao Orito <orito.takao@...ionext.com>,
        Kazuhiro Kasai <kasai.kazuhiro@...ionext.com>,
        Shinji Kanematsu <kanematsu.shinji@...ionext.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        Sugaya Taichi <sugaya.taichi@...ionext.com>
Subject: [PATCH v4 01/10] dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram

The Milbeaut M10V SoC needs a part of sram for smp, so this adds the
M10V sram compatible and binding.

Signed-off-by: Sugaya Taichi <sugaya.taichi@...ionext.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/sram/milbeaut-smp-sram.txt | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt

diff --git a/Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt b/Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt
new file mode 100644
index 0000000..194f6a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/sram/milbeaut-smp-sram.txt
@@ -0,0 +1,24 @@
+Milbeaut SRAM for smp bringup
+
+Milbeaut SoCs use a part of the sram for the bringup of the secondary cores.
+Once they get powered up in the bootloader, they stay at the specific part
+of the sram.
+Therefore the part needs to be added as the sub-node of mmio-sram.
+
+Required sub-node properties:
+- compatible : should be "socionext,milbeaut-smp-sram"
+
+Example:
+
+        sram: sram@0 {
+                compatible = "mmio-sram";
+                reg = <0x0 0x10000>;
+                #address-cells = <1>;
+                #size-cells = <1>;
+                ranges = <0 0x0 0x10000>;
+
+                smp-sram@...0 {
+                        compatible = "socionext,milbeaut-smp-sram";
+                        reg = <0xf100 0x20>;
+                };
+        };
-- 
1.9.1