Uhs-i mode for microsd on s905x2

[serj-47]

S095x2, X2Cube, 6.1.84, Bookworm.

How do I enable uhs-i high bandwidth mode for my microsd card? I checked the current parameters of the memory devices in the kernel, and it shows that the uhs-i mode is used only for the built-in mmc2 memory, but not for my microsd mmc1. Thus, the read and write speeds of the MICROSD card in the tvbox do not exceed 20 and 10 MB/s, respectively, but when connecting the microsd card to a laptop, the speeds are much higher.

root@X2Cube:~# cat /sys/kernel/debug/mmc0/ios
clock:          100000000 Hz
actual clock:   99999999 Hz
vdd:            21 (3.3 ~ 3.4 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      2 (4 bits)
timing spec:    5 (sd uhs SDR50)                                                 
signal voltage: 1 (1.80 V)
driver type:    0 (driver type B)

root@X2Cube:~# cat /sys/kernel/debug/mmc1/ios                                    
clock:          50000000 Hz
actual clock:   50000000 Hz
vdd:            21 (3.3 ~ 3.4 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      2 (4 bits)
timing spec:    2 (sd high-speed)
signal voltage: 0 (3.30 V)
driver type:    0 (driver type B)

root@X2Cube:~# cat /sys/kernel/debug/mmc2/ios
clock:          200000000 Hz
actual clock:   199999997 Hz
vdd:            21 (3.3 ~ 3.4 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      3 (8 bits)
timing spec:    9 (mmc HS200)
signal voltage: 1 (1.80 V)
driver type:    0 (driver type B)

[ophub]

Is the interface on your TV box using the same specifications as a computer? Are the test results in the Android system the same as on a computer?

[serj-47]

Is the interface on your TV box using the same specifications as a computer? Are the test results in the Android system the same as on a computer?

I checked the read write speed of the microsd card in android, and there are about the same numbers as in armbian, i.e. reading 22MB/s, writing 15MB/s. I also checked the microsd on the computer and there are about the following figures: Write-40MB/s Read-70 MB/s. As for the interface on the laptop, it seems that this is not what I need, because ..kernel/debug/mmc0 contains very strange data..

LAPTOP:

cat /sys/kernel/debug/mmc0/ios
clock:          0 Hz
vdd:            0 (invalid)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     0 (off)
bus width:      0 (1 bits)
timing spec:    0 (legacy)
signal voltage: 0 (3.30 V)
driver type:    0 (driver type B)

lshw
*-pci:2
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #9
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:122 ioport:5000(size=4096) memory:f1200000-f12fffff ioport:de900000(size=2097152)
           *-generic
                description: MMC Host
                product: RTS522A PCI Express Card Reader
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: mmc0
                version: 01
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=rtsx_pci latency=0
                resources: irq:125 memory:f1200000-f1200fff
              *-device
                   description: SD Card
                   product: USD
                   vendor: Unknown (29)
                   physical id: 59b4
                   logical name: /dev/mmcblk0
                   version: 1.0
                   date: 09/2023
                   serial: 4497
                   size: 29GiB (31GB)
                   capabilities: sd partitioned partitioned:dos
                   configuration: logicalsectorsize=512 sectorsize=512 signature=255458ee

[ophub]

So, this is the read and write speed of the box