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dt-bindings: memory-controllers: freescale: add MMDC binding doc 

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>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Anson Huang 2019-03-12 02:24:08 +00:00 committed by Shawn Guo
parent 20d467e1e9
commit 8677858da6
1 changed files with 35 additions and 0 deletions
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Documentation/devicetree/bindings/memory-controllers/fsl/mmdc.txt Normal file
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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";
};