RE: [v2, 07/11] mmc: fsl_esdhc: support eMMC HS400 mode

Hi Peng, > -Original Message- > From: Peng Fan > Sent: Monday, July 20, 2020 9:42 AM > To: Y.b. Lu ; u-boot@lists.denx.de; Priyanka Jain > ; 'Jaehoon Chung' > Cc: Y.b. Lu > Subject: RE: [v2, 07/11] mmc: fsl_esdhc: support eMMC HS400 mode > >

RE: [v2, 07/11] mmc: fsl_esdhc: support eMMC HS400 mode

> Subject: [v2, 07/11] mmc: fsl_esdhc: support eMMC HS400 mode > > The process for eMMC HS400 mode for eSDHC is, > > 1. Perform the Tuning Process at the HS400 target operating frequency. >Latched the clock division value. > 2. if read transaction, then set the SDTIMN

[v2, 07/11] mmc: fsl_esdhc: support eMMC HS400 mode

The process for eMMC HS400 mode for eSDHC is, 1. Perform the Tuning Process at the HS400 target operating frequency. Latched the clock division value. 2. if read transaction, then set the SDTIMNGCTL[FLW_CTL_BG]. 3. Switch to High Speed mode and then set the card clock frequency to a value no