mbox series

[0/2] imx8m: introduce high speed mode support in usdhc

Message ID 20201201085821.23050-1-andrey.zhizhikin@leica-geosystems.com
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Series imx8m: introduce high speed mode support in usdhc | expand

Message

ZHIZHIKIN Andrey Dec. 1, 2020, 8:58 a.m. UTC 
This patch series is targeted to address issues that can be observed
with various sd cards connected to i.MX8M derivatives.

Current configuration of usdhc dts nodes for imx8m SOC derivatives does
experience issues with recognition and mode switch for various sd card
types from different manufacturers, sometimes leading to an abrupted boot
process, either during attempt to load kernel image from attached media
or failure to recognize the sd card when switch to higher speed mode is
performed.

Modifications in patches introduced are aimed to resolve those issue by
introducing a short delay when mode switch in attempted, and enabling
high speed mode quirks for all imx8m derivatives.

Andrey Zhizhikin (2):
  ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator
  ARM: dts: imx8m: add UHS or HS400/HS400ES properties

 arch/arm/dts/fsl-imx8qm-mek-u-boot.dtsi    | 3 +++
 arch/arm/dts/fsl-imx8qxp-mek-u-boot.dtsi   | 3 +++
 arch/arm/dts/imx8mm-beacon-kit-u-boot.dtsi | 4 ++++
 arch/arm/dts/imx8mm-evk-u-boot.dtsi        | 8 ++++++++
 arch/arm/dts/imx8mn-ddr4-evk-u-boot.dtsi   | 8 ++++++++
 arch/arm/dts/imx8mp-evk-u-boot.dtsi        | 8 ++++++++
 arch/arm/dts/imx8mq-evk.dts                | 4 ++++
 arch/arm/dts/imx8mq-phanbell.dts           | 1 +
 8 files changed, 39 insertions(+)


base-commit: 0719bf42931033c3109ecc6357e8adb567cb637b