Re: [PATCH v7 5/7] ARM: dts: add pbias dt node

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On Tuesday 07 January 2014 05:53 PM, Balaji T K wrote:
On Tuesday 07 January 2014 04:27 PM, Mark Rutland wrote:
On Tue, Jan 07, 2014 at 10:18:15AM +0000, Balaji T K wrote:
On Monday 06 January 2014 11:49 PM, Mark Rutland wrote:
On Fri, Dec 20, 2013 at 05:35:53PM +0000, Balaji T K wrote:
Add pbias regulator node as a child of system control
module - syscon.

Signed-off-by: Balaji T K <balajitk@xxxxxx>
---
   arch/arm/boot/dts/dra7.dtsi     |   18 ++++++++++++++++++
   arch/arm/boot/dts/omap2430.dtsi |   18 ++++++++++++++++++
   arch/arm/boot/dts/omap3.dtsi    |   18 ++++++++++++++++++
   arch/arm/boot/dts/omap4.dtsi    |   18 ++++++++++++++++++
   arch/arm/boot/dts/omap5.dtsi    |   18 ++++++++++++++++++
   5 files changed, 90 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index d0df4c4..4e68df1 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -110,6 +110,23 @@
               ti,hwmods = "counter_32k";
           };

+        dra7_ctrl_general: tisyscon@4a002e00 {
+            compatible = "ti,control-syscon", "syscon", "simple-bus";

Please, don't use simple-bus like that. The components below this node
depend on it. It is _NOT_ a simple bus. Make the ti,control-syscon
driver probe it's children.

Hi Mark,

Actually ti,control-syscon driver does not exist, so I can remove it,
and simple-bus is needed for child creation.

This still shows up as a syscon node, with a reg property, and syscon is
not an extension of simple-bus.

There are properties in the parent node that children depend on, and
that makes me wary of describing it as a simple bus. I'd expect to be
able to move child nodes out of a simple-bus if ranges provided an
idmap, and I can't do that here.

Hi Mark,

Not sure if I am understanding here, can you please add more info.

Hi Mark,

From Documentation/devicetree/bindings.. , I could get below info about simple-bus
- "simple-bus" compatible value (to ensure creation of the children)
	compatible = "simple-bus";


Thanks,
Mark.



+            reg = <0x4a002e00 0x7c>;
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges;
+            pbias_regulator: pbias_regulator {
+                compatible = "ti,pbias-omap";
+                reg = <0 0x4>;
+                pbias_mmc_reg: pbias_mmc_omap5 {
+                    regulator-name = "pbias_mmc_omap5";
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <3000000>;
+                };
+            };
+        };
+

Thanks,
Mark.




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