[PATCH] configs: qcm6490_defconfig: Enable SCSI as the Fastboot flash block interface

[Manivannan Sadhasivam]

On Wed, Jun 24, 2026 at 04:25:02PM +0530, Balaji Selvanathan wrote:
> Hi Manivannan, Casey,
> 
> On 6/19/2026 1:04 PM, Manivannan Sadhasivam wrote:
> > qcom_defconfig uses EMMC as the flash interface for Fasboot, but QCS6490
> > RB3Gen2 has no on-board eMMC. So override the config to use UFS as the
> > flash medium by selecting 'scsi' interface.
> > 
> > This enables flashing the images over Fastboot on this board.
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam at oss.qualcomm.com>
> > ---
> >   configs/qcm6490_defconfig | 4 ++++
> >   1 file changed, 4 insertions(+)
> > 
> > diff --git a/configs/qcm6490_defconfig b/configs/qcm6490_defconfig
> > index b088367f86c..d599e7611c1 100644
> > --- a/configs/qcm6490_defconfig
> > +++ b/configs/qcm6490_defconfig
> > @@ -16,3 +16,7 @@ CONFIG_DEFAULT_DEVICE_TREE="qcom/qcs6490-rb3gen2"
> >   CONFIG_FASTBOOT_BUF_ADDR=0xd8800000
> >   CONFIG_PHY_QCOM_QMP_COMBO=y
> > +
> > +CONFIG_FASTBOOT_FLASH_BLOCK=y
> > +CONFIG_FASTBOOT_FLASH_BLOCK_INTERFACE_NAME="scsi"
> > +CONFIG_FASTBOOT_FLASH_BLOCK_DEVICE_ID=0
> 
> Similar patch is submitted and under review: https://lore.kernel.org/u-boot/20260216-fb_block-v1-1-4e2d286bae76@oss.qualcomm.com/ <https://lore.kernel.org/u-boot/20260216-fb_block-v1-1-4e2d286bae76@oss.qualcomm.com/>
> 
> Since most of the Dragonwing boards has UFS as default, we wanted to change
> default to UFS in qcom_defconfig itself and then for eMMC boards, we can
> modify in their board specific defconfigs.
> 

I don't have any issues. It is upto Casey to decide.

- Mani

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