On Fri, 24 Feb 2012 15:56:52 +0530, Rajendra Nayak [off-list ref] wrote:

On Friday 24 February 2012 03:46 PM, T Krishnamoorthy, Balaji wrote:

quoted

quoted

diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 29f4589..9204f60 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi

@@ -25,6 +25,11 @@
                serial1 =&uart2;
                serial2 =&uart3;
                serial3 =&uart4;
+               mmc1 =&mmc1;
+               mmc2 =&mmc2;
+               mmc3 =&mmc3;
+               mmc4 =&mmc4;
+               mmc5 =&mmc5;
        };

        cpus {

@@ -155,5 +160,31 @@
                        #size-cells =<0>;
                        ti,hwmods = "i2c4";
                };
+
+               mmc1: mmc@1 {
+                       compatible = "ti,omap4-hsmmc";
+                       ti,hwmods = "mmc1";
+                       ti,dual-volt;
+               };
+
+               mmc2: mmc@2 {
+                       compatible = "ti,omap4-hsmmc";
+                       ti,hwmods = "mmc2";
+               };

Hi Rajendra,
Is there a way to control the device registration order,
eMMC connected to mmc2 needs to be registered as /dev/mmcblk0p ...
irrespective of whether SD card is mount or not on mmc1 card slot.
So that bootargs would not have to be modified when filesystem is on eMMC.

I don't know if we can, but even if we could, we take care of the same
bootargs working on two boards (say sdp and panda) *if* on sdp I have my
filesystem on eMMC and on panda I have it on external card.
What happens if I want to use my filesystem on both boards on external
card?

of_alias_get_id() may be able to help you here.  It will extract the id
numbering from the /aliases node.  That is the safe way to do global
enumeration of devices in the device tree (instead of 'cell-index' which
is strongly discouraged)

g.

quoted

quoted

+
+               mmc3: mmc@3 {
+                       compatible = "ti,omap4-hsmmc";
+                       ti,hwmods = "mmc3";
+               };
+
+               mmc4: mmc@4 {
+                       compatible = "ti,omap4-hsmmc";
+                       ti,hwmods = "mmc4";
+               };
+
+               mmc5: mmc@5 {
+                       compatible = "ti,omap4-hsmmc";
+                       ti,hwmods = "mmc5";
+               };
        };
  };
--
1.7.1

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-- 
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Secret Lab Technologies,Ltd.