linux-kernel - [PATCH 1/2] dt-bindings: mmc: add DT bindings for Milbeaut SD controller

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Date:   Fri, 26 Apr 2019 11:06:32 +0900
From:   Takao Orito <orito.takao@...ionext.com>
To:     ulf.hansson@...aro.org, robh+dt@...nel.org, mark.rutland@....com
Cc:     linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, masami.hiramatsu@...aro.org,
        jaswinder.singh@...aro.org, sugaya.taichi@...ionext.com,
        kasai.kazuhiro@...ionext.com, kanematsu.shinji@...ionext.com,
        orito.takao@...ionext.com
Subject: [PATCH 1/2] dt-bindings: mmc: add DT bindings for Milbeaut SD controller

Signed-off-by: Takao Orito <orito.takao@...ionext.com>
---
 .../devicetree/bindings/mmc/sdhci-milbeaut.txt     | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt b/Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt
new file mode 100644
index 0000000..7008462
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt
@@ -0,0 +1,35 @@
+* SOCIONEXT SDHCI controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the sdhci_milbeaut driver.
+
+Required properties:
+- compatible: "socionext,milbeaut-m10v-sdhci-3.0"
+- clocks: Must contain an entry for each entry in clock-names. It is a
+  list of phandles and clock-specifier pairs.
+  See ../clocks/clock-bindings.txt for details.
+- clock-names: Should contain the following two entries:
+	"iface" - clock used for sdhci interface
+	"core"  - core clock for sdhci controller
+
+Optional properties:
+- vqmmc-supply: phandle to the regulator device tree node, mentioned
+  as the VCCQ/VDD_IO supply in the eMMC/SD specs.
+- fujitsu,cmd-dat-delay-select: boolean property indicating that this host
+  requires the CMD_DAT_DELAY control to be enabled.
+- sni,mmc-power-gpio: set property indicating that power on or off needs
+  control of gpios.
+
+Example:
+	sdhci3: mmc@...10000 {
+		compatible = "socionext,milbeaut-m10v-sdhci-3.0";
+		reg = <0x1b010000 0x10000>;
+		interrupts = <0 265 0x4>;
+		voltage-ranges = <3300 3300>;
+		bus-width = <4>;
+		clocks = <&clk 7>, <&ahb_clk>;
+		clock-names = "core", "iface";
+		cap-sdio-irq;
+		sni,mmc-power-gpio = <&pinctrl 53 GPIO_ACTIVE_HIGH>;
+			fujitsu,cmd-dat-delay-select;
+	};
-- 
1.9.1