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

Takao Orito
2019-04-26T02:04:15Z

Signed-off-by: Takao Orito <orito.takao@socionext.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@1b010000 {
+ 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