[PATCH v2 0/1] Enable ddr modes on emmc2 of Raspberry Pi 4 B

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Currently  eMMC storage attached to a Pi 4 is running in single data
rate mode only. However the controller used supports dual data rate
modes. This patch enables ddr modes for mmc storage.

I've verified that there are no issues transferring data in ddr mode
using multiple eMMC modules from different vendors.
Additionally I've checked signal integrity on the data lines at the
micro SD card slot and did not find any issues there either.

This is v2 of this patch. The sd-uhs-ddr50 property present in the
initial version of the patch is not required and was removed.

Changelog:
 v2: Remove sd-uhs-ddr50 property

Tobias Schramm (1):
  ARM: dts: bcm2711: Enable ddr modes on emmc2 controller

 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 1 +
 1 file changed, 1 insertion(+)

-- 
2.28.0




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux