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Date:	Sun, 02 Nov 2014 08:08:34 +0000
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	Andreas Färber <afaerber@...e.de>,
	Georgi Djakov <gdjakov@...sol.com>
CC:	Bjorn Andersson <bjorn@...o.se>, Kumar Gala <galak@...eaurora.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Russell King <linux@....linux.org.uk>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	"Ivan T. Ivanov" <iivanov@...sol.com>
Subject: Re: [PATCH v2 3/3] ARM: dts: qcom: Add SDHC nodes for APQ8084 platform

Hi Andreas,

On 01/11/14 15:43, Andreas Färber wrote:
> Hi Georgi,
>
> Am 14.10.2014 um 18:17 schrieb Georgi Djakov:
>> On 10/10/2014 08:14 PM, Bjorn Andersson wrote:
>>> On Tue, Sep 2, 2014 at 8:40 AM, Georgi Djakov <gdjakov@...sol.com> wrote:
>>>> Enable support for the two SD host controllers on the APQ8084 platform
>>>> by adding the required nodes to the DT files.
>>>> On the IFC6540 board, the first controller is connected to the onboard
>>>> eMMC and the second is connected to a micro-SD card slot.
>>>>
>>>> Signed-off-by: Georgi Djakov <gdjakov@...sol.com>
> [...]
>>>> ---
>>>>   arch/arm/boot/dts/qcom-apq8084-ifc6540.dts |   11 +++++++++++
>>>>   arch/arm/boot/dts/qcom-apq8084.dtsi        |   23 +++++++++++++++++++++++
>>>>   2 files changed, 34 insertions(+)
>>>>
>>>> diff --git a/arch/arm/boot/dts/qcom-apq8084-ifc6540.dts b/arch/arm/boot/dts/qcom-apq8084-ifc6540.dts
>>>> index e41cb8a..c9ff108 100644
>>>> --- a/arch/arm/boot/dts/qcom-apq8084-ifc6540.dts
>>>> +++ b/arch/arm/boot/dts/qcom-apq8084-ifc6540.dts
>>> [..]
>>>> +               sdhci@...a4900 {
>>>> +                       cd-gpios = <&tlmm 122 GPIO_ACTIVE_LOW>;
>>>> +                       bus-width = <4>;
>>>
>>> ...why do you add this node and leave it disabled in the dts?
>>>
>>
>> Hi Bjorn,
>> Currently only the eMMC is functional on this board, so now we
>> have just the board specific configuration under this node.
>> More patches are forthcoming.
>
> Any update on this? This still seems to be the latest IFC6540 commit:
>
> https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/commit/66c04e30f4a6e6ed998a6c154a6c45b3cd5b3fde
>
> Following the instructions in https://wiki.linaro.org/Boards/IFC6540

I did update the wiki with more instructions to flash rootfs on to eMMC.

> I've tried to pass a full rootfs as ramdisk parameter (fastboot boot -c
> "console=ttyMSM0,115200,n8 rw rootwait" -b 0x0 zImage-ifc6540
> initrd.cpio.gz), but I then get:
There is a typo here, I fixed it as well.
#sudo fastboot boot -c "console=ttyMSM0,115200,n8 root=/dev/mmcblk0p25 
rootwait rw" -b 0x80200000 zImage-dtb

Could you give this a try?

>
> [258660] fastboot: download:12738800
> [268150] fastboot: boot
> [268150] kernel/ramdisk addresses overlap with aboot addresses.
>
> Booting without ramdisk specified works, but for lack of SD, USB and
> network support I then have no root.
>
Now you can flash the rootfs into the eMMC partition.
> So, do you have any new insights on why 'status = "okay";' doesn't work
> for the above sdhci node? Or do you have a working config you can share
> for creating a non-overlapping abootimg?

thanks,
sirni
>
> Regards,
> Andreas
>
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