[PATCH V5 1/4] dt-bindings: memory-controllers: freescale: add MMDC binding doc

Anson Huang
2019-03-12T02:24:16Z

Freescale MMDC (Multi Mode DDR Controller) driver is supported
since i.MX6Q, but not yet documented, this patch adds binding
doc for MMDC module driver.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V4:
- update mmdc1 example.
---
.../bindings/memory-controllers/fsl/mmdc.txt | 35 ++++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 Documentation/devicetree/bindings/memory-controllers/fsl/mmdc.txt

diff --git a/Documentation/devicetree/bindings/memory-controllers/fsl/mmdc.txt b/Documentation/devicetree/bindings/memory-controllers/fsl/mmdc.txt
new file mode 100644
index 0000000..bcc36c5
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/fsl/mmdc.txt
@@ -0,0 +1,35 @@
+Freescale Multi Mode DDR controller (MMDC)
+
+Required properties :
+- compatible : should be one of following:
+ for i.MX6Q/i.MX6DL:
+ - "fsl,imx6q-mmdc";
+ for i.MX6QP:
+ - "fsl,imx6qp-mmdc", "fsl,imx6q-mmdc";
+ for i.MX6SL:
+ - "fsl,imx6sl-mmdc", "fsl,imx6q-mmdc";
+ for i.MX6SLL:
+ - "fsl,imx6sll-mmdc", "fsl,imx6q-mmdc";
+ for i.MX6SX:
+ - "fsl,imx6sx-mmdc", "fsl,imx6q-mmdc";
+ for i.MX6UL/i.MX6ULL/i.MX6ULZ:
+ - "fsl,imx6ul-mmdc", "fsl,imx6q-mmdc";
+ for i.MX7ULP:
+ - "fsl,imx7ulp-mmdc", "fsl,imx6q-mmdc";
+- reg : address and size of MMDC DDR controller registers
+
+Optional properties :
+- clocks : the clock provided by the SoC to access the MMDC registers
+
+Example :
+ mmdc0: memory-controller@21b0000 { /* MMDC0 */
+ compatible = "fsl,imx6q-mmdc";
+ reg = <0x021b0000 0x4000>;
+ clocks = <&clks IMX6QDL_CLK_MMDC_P0_IPG>;
+ };
+
+ mmdc1: memory-controller@21b4000 { /* MMDC1 */
+ compatible = "fsl,imx6q-mmdc";
+ reg = <0x021b4000 0x4000>;
+ status = "disabled";
+ };
--
2.7.4