Hi Maxime, On 01/26/2017 10:05 AM, Maxime Ripard wrote: > Hi, > > Here is a new attempt at getting the MMC controllers running, following the > work done by Andre. > > This has been tested on a board with one SDIO device (a Marvell WiFi chip) > and a Kingston eMMC with 1.8V IOs. > > For SDIO, the HS DDR mode works just fine. That serie also enables the > SDR104 mode to work on the devices that are capable of this. > > For the eMMC, HS200 with the voltage switch works. HS400 doesn't at the > moment, but since it's significantly more complex, and at the same time > Allwinner recommends to limit its frequency to 100MHz, this doesn't have > any benefits. If there's any at some point, this can be added later. > > Let me know what you think, > Maxime > FWIW I tested this series and got decent throughput (190 Mbps in UDP) with a Marvell SDIO Wifi chip. The board becomes unresponsive between 30 to 60 minutes of iperf torture, but I strongly suspect a hardware issue underneath. Feel free to add my Tested-by on the MMC patches if you need it. Thank you for your work. Best, Florian > Changes from v3: > - Reordered the MMC nodes > - Added the specification section the first commit log > - Supported mmc->actual_rate > - Clarified a bit what we (don't) know about DATA0 > > Changes from v2: > - Enabled SDR104, limited the frequency to 150MHz. 200MHz was too high. > - Added more fixes to the gating and frequency rate change sequence > - Added one more patch to mask DATA0 when updating the clock that was > needed to get SDR104 to run > - Added the patches to enable it on a few boards done by Andre > - Amended the comments as suggested by Andre. > - Added some tags > > Andre Przywara (4): > arm64: allwinner: a64: Add MMC nodes > arm64: allwinner: pine64: add MMC support > arm64: allwinner: a64: add UART1 pin nodes > arm64: allwinner: add BananaPi-M64 support > > Maxime Ripard (9): > mmc: sunxi: Fix clock frequency change sequence > mmc: sunxi: Gate the clock when rate is 0 > mmc: sunxi: Always set signal delay to 0 for A64 > mmc: sunxi: Enable the new timings for the A64 MMC controllers > mmc: sunxi: Mask DATA0 when updating the clock > mmc: sunxi: Add EMMC (MMC2) controller compatible > mmc: sunxi: Add more debug informations > arm64: allwinner: a64: Add MMC pinctrl nodes > arm64: allwinner: a64: Increase the MMC max frequency > > arch/arm64/boot/dts/allwinner/Makefile | 1 +- > arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts | 120 +++++++- > arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts | 20 +- > arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 77 ++++- > drivers/mmc/host/sunxi-mmc.c | 114 ++++--- > 5 files changed, 289 insertions(+), 43 deletions(-) > create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts > > base-commit: bc34c1af0a280e27eafe3f86b9ad87fe0c9ea715 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
