On Sat, Aug 22, 2026 at 12:43 AM Yixun Lan <[email protected]> wrote: > > Hi Eric > > On 11:54 Wed 19 Aug , Eric Chung wrote: > > This series adds MMC support for the SpacemiT K1: an SDHCI platform > > driver, the SD card device-tree overlay, defconfig options, and SPL > > boot-device selection from the SoC strap/config registers. The SDHCI > > driver is usable in both SPL and U-Boot proper. > > > > A flashing guide (doc/board/spacemit/k1-flash.rst) describes how to > > write images to eMMC. > > > > --- > > Changes in v9: > > - spl: Enhance detection on booting from SD. > > - dts: Synched upstream DTS files for K1. > > - doc: Create SD card image from scratch. > > - mmc: Avoid to use CMD18 on SD card in SPL. > .. > > - pinctrl: Drop "fix drive strength configuration". > Could you please explain why this patch is dropped? > > It looks valid to me, also it fix a problem that setting drive strength > actually clear out other pin conf bits which lead to serious bug
Ah. I should drop "fix pull-up/pull-down configuration" instead. I picked the wrong patch. > > - clrsetbits_le32(addr, PAD_DRIVE, ds); > + clrsetbits_le32(addr, PAD_DRIVE, FIELD_PREP(PAD_DRIVE, ds)); > > -- > Yixun Lan (dlan)
