i.MX8M Mini can provide support for high speed grades in the usdhc controllers.
On the imx8mm-beacon-kit, the sdhc2 hosts a microSD card, and sdhc3 hosts an eMMC capable of HS400ES.
In order to toggle this mode in SPL, the reg_usdhc2_vmmc must be available in SPL. Add all these flags to imx8mm-beacon-kit-u-boot.dtsi
Suggested-by: Andrey Zhizhikin andrey.zhizhikin@leica-geosystems.com Signed-off-by: Adam Ford aford173@gmail.com
diff --git a/arch/arm/dts/imx8mm-beacon-kit-u-boot.dtsi b/arch/arm/dts/imx8mm-beacon-kit-u-boot.dtsi index 6d80a529ae..d7da29c592 100644 --- a/arch/arm/dts/imx8mm-beacon-kit-u-boot.dtsi +++ b/arch/arm/dts/imx8mm-beacon-kit-u-boot.dtsi @@ -38,6 +38,7 @@ };
®_usdhc2_vmmc { + u-boot,dm-spl; u-boot,off-on-delay-us = <20000>; };
@@ -112,10 +113,14 @@
&usdhc2 { u-boot,dm-spl; + sd-uhs-sdr104; + sd-uhs-ddr50; };
&usdhc3 { u-boot,dm-spl; + mmc-hs400-1_8v; + mmc-hs400-enhanced-strobe; };
&i2c1 {