linux-kernel - [PATCH v2 2/3] Documentation: bluefield-dw-mshc: add DT description

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Message-Id: <7505274f8d82642fd08e874160acd45be2418673.1524497286.git.lsun@mellanox.com>
Date:   Mon, 23 Apr 2018 11:32:21 -0400
From:   Liming Sun <lsun@...lanox.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>
Cc:     Liming Sun <lsun@...lanox.com>, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] Documentation: bluefield-dw-mshc: add DT description

This commit adds "mellanox,bluefield-dw-mshc" for dwmmc driver
extension on Mellanox BlueField SoC platform.

Signed-off-by: Liming Sun <lsun@...lanox.com>
---
 .../devicetree/bindings/mmc/bluefield-dw-mshc.txt  | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/bluefield-dw-mshc.txt

diff --git a/Documentation/devicetree/bindings/mmc/bluefield-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/bluefield-dw-mshc.txt
new file mode 100644
index 0000000..ee0dd61
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/bluefield-dw-mshc.txt
@@ -0,0 +1,29 @@
+* Mellanox Bluefield SoC specific extensions to the Synopsys Designware
+  Mobile Storage Host Controller
+
+Read synopsys-dw-mshc.txt for more details
+
+The Synopsys designware mobile storage host controller is used to interface
+a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
+differences between the core Synopsys dw mshc controller properties described
+by synopsys-dw-mshc.txt and the properties used by the Mellanox Bluefield SoC
+specific extensions to the Synopsys Designware Mobile Storage Host Controller.
+
+Required Properties:
+
+* compatible: should be one of the following.
+  - "mellanox,bluefield-dw-mshc": for controllers with Mellanox Bluefield SoC
+    specific extensions.
+
+Example:
+
+	/* Mellanox Bluefield SoC MMC */
+	dwmmc0@4,0 {
+		compatible = "mellanox,bluefield-dw-mshc";
+		reg = <4 0x8000 0x400>;
+		interrupts = <32>;
+		fifo-depth = <0x100>;
+		clock-frequency = <24000000>;
+		bus-width = <8>;
+		cap-mmc-highspeed;
+	};
-- 
1.8.3.1