On Thu, Sep 21, 2023 at 8:51 PM Drew Fustini <dfustini@xxxxxxxxxxxx> wrote: > > This series adds support for the eMMC on the BeagleV Ahead and the > Sipeed LicheePi 4A. This allows the kernel to boot with the rootfs on > eMMC. > > I tested on top of v6.6-rc2 with this config [1]. I was able to boot > both the Ahead [2] and LPi4a [3] from eMMC. The following prerequisites > are required: > > [PATCH v2] riscv: dts: thead: set dma-noncoherent to soc bus [4] > > I pushed a branch [5] with this patch series and the above patch for > those that find a git branch easier to test. > > Please note that only the MMC controller connected to the eMMC device > is enabled in the device trees for these two boards. I did not yet > attempt to configure and use the microSD card slot. My preference is to > address that in a future patch series. > > References: > [1] https://gist.github.com/pdp7/5fbdcf2a65eb1abdd3a29d519c19cdd2 > [2] https://gist.github.com/pdp7/91a801a5f8d1070c53509eda9800ad78 > [3] https://gist.github.com/pdp7/1445c3c991e88fd69c60165cef65726a > [4] https://lore.kernel.org/linux-riscv/20230912072232.2455-1-jszhang@xxxxxxxxxx/ > [5] https://github.com/pdp7/linux/tree/b4/th1520-mmc This patchset came out very nice! v6.6-rc2 with Last RFC v2: [ 4.066630] mmc0: SDHCI controller on ffe7080000.mmc [ffe7080000.mmc] using PIO debian@BeagleV:~$ sudo hdparm -tT /dev/mmcblk0 /dev/mmcblk0: Timing cached reads: 1516 MB in 2.00 seconds = 758.09 MB/sec Timing buffered disk reads: 84 MB in 3.01 seconds = 27.94 MB/sec vs v6.6-rc2 with this patchset: [ 4.096837] mmc0: SDHCI controller on ffe7080000.mmc [ffe7080000.mmc] using DMA debian@BeagleV:~$ sudo hdparm -tT /dev/mmcblk0 /dev/mmcblk0: Timing cached reads: 1580 MB in 2.00 seconds = 790.97 MB/sec Timing buffered disk reads: 418 MB in 3.00 seconds = 139.11 MB/sec Regards, -- Robert Nelson https://rcn-ee.com/
