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:

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On 10/10/2014 08:14 PM, Bjorn Andersson wrote:

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On Tue, Sep 2, 2014 at 8:40 AM, Georgi Djakov [off-list ref] wrote:

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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 <redacted>

[...]

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---
  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

[..]

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+               sdhci@f98a4900 {
+                       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