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.
-- Changes in v3: - Fix binding names, which had incorrect 'u-boot,' prefix used. - Introduce additional patch to turn on config options required to enable the support for high speed modes in eSDHC driver components.
Andrey Zhizhikin (3): ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator ARM: dts: imx8m: add UHS or HS400/HS400ES properties configs: imx8m: enable eMMC HS400ES and SD UHS mode on EVK
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-u-boot.dtsi | 14 ++++++++++++++ arch/arm/dts/imx8mq-phanbell-u-boot.dtsi | 5 +++++ configs/imx8mm_evk_defconfig | 4 ++++ configs/imx8mn_ddr4_evk_defconfig | 4 ++++ configs/imx8mp_evk_defconfig | 3 +++ 11 files changed, 64 insertions(+) create mode 100644 arch/arm/dts/imx8mq-evk-u-boot.dtsi create mode 100644 arch/arm/dts/imx8mq-phanbell-u-boot.dtsi
base-commit: ee1e04558ff8c8ed812b986939447f129bb0b0bb