On Fri, 2015-02-27 at 10:02 -0600, Kumar Gala wrote:

On Jan 20, 2015, at 6:03 AM, Igal.Liberman [off-list ref] wrote:

quoted

+	guts_regs = of_iomap(guts, 0);
+	of_node_put(guts);
+	if (!guts_regs) {
+		pr_err("ioremap of GUTS node failed\n");
+		return -EINVAL;
+	}

Have you guys looked at using drivers/mfd/syscon.c for GUTS access.

Given the lack of documentation, could you explain what that file
offers?  Other than a requirement to modify existing device trees to do
something other than describe the hardware (that file won't touch
anything that isn't compatible with "syscon").

-Scott