On Mon, Jan 21, 2019 at 9:08 PM Vasily Khoruzhick anarsoul@gmail.com wrote:
On Mon, Jan 21, 2019 at 2:32 AM Jagan Teki jagan@amarulasolutions.com wrote:
Environment and fastboot MMC devices are configured based number of mmc slots defined on particular board in sunxi platform.
If number of slots are not more than 1, it assigns 0 which usually mmc device on SD slot. With DM_MMC it is detected as 0 since mmc0 node always be an mmc device.
If number of slots are more than 1, it assigns 1 which assumes 0 is mmc device and 1 is emmc device. But with DM_MMC there is chance of detecting emmc as device 2 since mmc1 is SDIO as per devicetree definition.
So override mmc2 to mmc1 in sunxi dtsi, this will eventually detect mmc2 as mmc 1 device even if the board dts has mmc0, mmc1, mmc2.
It doesn't work on Pinebook - where we have mmc0 (SD card), mmc1 (SDIO), mmc2 (eMMC). It still enumerates mmc2 as mmc2.
BPI-M64 has same, here is log
U-Boot 2019.01-00171-g1fa1610a2a-dirty (Jan 21 2019 - 21:12:21 +0530) Allwinner Technology
CPU: Allwinner A64 (SUN50I) Model: BananaPi-M64 DRAM: 2 GiB MMC: Device 'mmc@1c11000': seq 1 is in use by 'mmc@1c10000' mmc@1c0f000: 0, mmc@1c10000: 2, mmc@1c11000: 1 Loading Environment from FAT... OK In: serial Out: serial Err: serial Allwinner mUSB OTG (Peripheral) Net: phy interface7 eth0: ethernet@1c30000, eth1: usb_ether starting USB... USB0: USB EHCI 1.00 USB1: USB OHCI 1.0 USB2: USB EHCI 1.00 USB3: USB OHCI 1.0 scanning bus 0 for devices... 1 USB Device(s) found scanning bus 1 for devices... 1 USB Device(s) found scanning bus 2 for devices... 2 USB Device(s) found scanning bus 3 for devices... 1 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found Hit any key to stop autoboot: 0 => => => mmc list mmc@1c0f000: 0 mmc@1c10000: 2 mmc@1c11000: 1 (eMMC) => mmc dev 0 switch to partitions #0, OK mmc0 is current device => mmc list mmc@1c0f000: 0 (SD) mmc@1c10000: 2 mmc@1c11000: 1 (eMMC)