From 60490d0a91ab97231d1cfea1f9327a03a596fa8f Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 17 May 2017 15:55:25 -0300 Subject: [PATCH] ARM: dts: imx7s-warp: Pass 'no-1-8-v' property to the eMMC Currently the following eMMC error is seen: mmc1: mmc_select_hs200 failed, error -74 mmc1: new MMC card at address 0001 mmcblk1: mmc1:0001 V10008 7.05 GiB mmcblk1boot0: mmc1:0001 V10008 partition 1 4.00 MiB mmcblk1boot1: mmc1:0001 V10008 partition 2 4.00 MiB mmcblk1rpmb: mmc1:0001 V10008 partition 3 4.00 MiB On imx7s-warp the eMMC VCCQ is fixed at 3.15V, so pass the 'no-1-8-v' property to properly describe that 1.8V operation is not possible. With this change HS200 error is gone and another benefit is that the card can operate in DDR52 mode now: mmc1: new DDR MMC card at address 0001 mmcblk1: mmc1:0001 V10008 7.05 GiB mmcblk1boot0: mmc1:0001 V10008 partition 1 4.00 MiB mmcblk1boot1: mmc1:0001 V10008 partition 2 4.00 MiB mmcblk1rpmb: mmc1:0001 V10008 partition 3 4.00 MiB Suggested-by: Stefan Agner Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx7s-warp.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/imx7s-warp.dts b/arch/arm/boot/dts/imx7s-warp.dts index d5237fd0fa65..8dfed85471e1 100644 --- a/arch/arm/boot/dts/imx7s-warp.dts +++ b/arch/arm/boot/dts/imx7s-warp.dts @@ -295,6 +295,7 @@ &usdhc3 { assigned-clocks = <&clks IMX7D_USDHC3_ROOT_CLK>; assigned-clock-rates = <400000000>; bus-width = <8>; + no-1-8-v; fsl,tuning-step = <2>; non-removable; status = "okay";