Hi Shawn, > On 17.10.2017, at 05:38, Shawn Lin <shawn.lin at rock-chips.com> wrote: > > The vcc_sd or vcc_sdio used for IO voltage for sdmmc and sdio > interface on rk3399 platform have a limitation that it can't be > larger than 3.0v, otherwise it has a potential risk for the chip. > Correct all of them. For rk3399-puma.dtsi Tested-by: Klaus Goger <klaus.goger at theobroma-systems.com> ? Klaus