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From: Sophie <s.carayol@lacroix-electronics.com>
Date: Tue, 13 May 2014 14:05:18 +0000 (UTC)
Message-ID: <loom.20140513T155122-132@post.gmane.org>
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Subject: [ptxdist] Changes in device tree files
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Hi,

For a board based on the MBa6X (TQMa6s) TQ Group board, I tried to add our
needs in the device tree : I need i2c4. Now it's OK for I2C4 for imx6dl
version. The problem is only for im6q version because, i think there is an
uncompatiblity for PINMUX but I don't need this version

Besides, I want to add an NVRAM (seen as an MTD-RAM) as we have one in our
design. I saw in the device tree documentation (device
tree/bindings/mtd/mtd-physmap.txt), that I have to add the following lines :

sram <at> 2,0 {
		compatible = "samsung,k6f1616u6a", "mtd-ram";
		reg = <2 0 0x00200000>;
		bank-width = <2>;
	};

Finally, I add in imx6dl.dtsi the following lines under 'soc' node:

weim : eim@08000000 {
		sram@30000000,0 {
		compatible = "cypress,cy62157ev30ll", "mtd-ram"; 
		reg = <0x30000000 0 0x00100000>; 		
		bank-width = <2>;
		};
	};

But these lines generate a syntax error. In what file of the same device
tree would it be better to add these lines and what is the right way ?

Best regards,
Sophie


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