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Update SDIO page 

* rename page to SDIO
* fix some typo
* change microSD card pics
* add tested microsd table
This commit is contained in:
Gauthier Provost 2018-12-13 17:50:23 +08:00
parent 0231b2bd89
commit 5dd9a175e0
11 changed files with 91 additions and 76 deletions
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docs/sdcard.md
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@ -1,17 +1,23 @@
Helios4 SoC (Armada 388) SD card controller support up to UHS-I speed mode
Helios4 SoC (Armada 388) SDIO controller supports up to UHS-I speed mode.
![Supported SD Card Speed](/img/sdcard/supported_sdcard_speed.png)
Following modes are supported:
However, it is not compatible with all card even though the cards are declared as UHS-I capable. To keep it compatible with most of card,
Helios4 device tree only define [Normal Speed mode](https://www.sdcard.org/consumers/choices/speed_class/index.html).
* Default Speed (DS)–up to 25 MHz, 1.8V/3.3V signaling
* High Speed (HS)–up to 50 MHz, 1.8V/3.3V signaling
* SDR12–SDR up to 25 MHz, 1.8V/3.3V signaling
* SDR25–SDR up to 50 MHz, 1.8V/3.3V signaling
* SDR50–SDR up to 100 MHz, 1.8V signaling
* DDR50–DDR up to 50 MHz, 1.8V/3.3V signaling
However, it is not compatible with all cards even though the SD cards are declared as UHS-I capable. To keep it compatible with most of card, Helios4 device tree only define by default [Normal Speed mode](https://www.sdcard.org/consumers/choices/speed_class/index.html).
!!! Warning
Enabling High Speed and UHS-I support could lead the system unbootable on incompatible card.
Enabling High Speed and UHS-I support could lead to unbootable system because of incompatible microSD card.
## Device Tree Modification
To enable High Speed mode and UHS-I support, Helios4 device tree need to be modified.
To enable High Speed mode and UHS-I support, Helios4 device tree need to be modified.
The following instructions are executed under Helios4.
### Prerequisites
@ -22,11 +28,15 @@ The following instructions are executed under Helios4.
Install the dependencies and extract the source into ~/src/linux
```
sudo apt-get -y install build-essential linux-source-next-mvebu
sudo apt-get -y install build-essential linux-source-4.14.87-next-mvebu
mkdir -p ~/src/linux
tar Jxf /usr/src/linux-source-*-mvebu.tar.xz -C ~/src/linux
tar Jxf /usr/src/linux-source-4.14.87-mvebu.tar.xz -C ~/src/linux
```
!!! note
You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -a**
### Patching and Compilation
Download and apply [this patch](/files/sdcard/helios4_dtb_sd_uhs_linux_stable.patch) to Linux kernel source code.
@ -87,11 +97,11 @@ sudo rm /boot/dtb/armada-388-helios4.dtb.uhs
```
## Testing SD Card Performance
## Performance Testing
The test methodology adapted from
The test methodology is adapted from
[SD card performance - Research guides & tutorials - Armbian forum](https://forum.armbian.com/topic/954-sd-card-performance/)
with slightly modified parameter to run the test on SD card which mounted under /mnt/sdcard
with slightly modified parameter to run the test on SD card mounted under /mnt/sdcard.
```
iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 -f /mnt/sdcard/iozone-test.dat
@ -121,7 +131,7 @@ chmod 755 run_sdcard_test.sh
sudo sed -i 's/^exit 0/dmesg -n 8\nexit 0/g' /etc/rc.local
```
**5.** Make sure armada-388-helios4.dtb point to armada-388-helios4.dtb.uhs
**5.** Make sure armada-388-helios4.dtb points to armada-388-helios4.dtb.uhs
```
cd /boot/dtb/
@ -151,8 +161,7 @@ lsblk
sudo ./run_sdcard_test.sh
```
It will display the test progress and also store into log file with filename format
*SD_test_**<sdcard_address\>**\_[**<sdcard_name\>**]\_**<date_in_YYYYMMDD_HHMMSS\>**.log*
The test script will display the test progress and log result into log file : *SD_test_**<sdcard_address\>**\_[**<sdcard_name\>**]\_**<date_in_YYYYMMDD_HHMMSS\>**.log*
Example filename: SD_test_mmc0:aaaa-[SU08G]_20181212_034241.log
@ -175,7 +184,20 @@ sudo ln -sf armada-388-helios4.dtb.ori armada-388-helios4.dtb
sudo sed -i '/^dmesg -n 8/d' /etc/rc.local
```
### Tested SD Card
### Tested MicroSD Card
Below a non-exhaustive list of microSD Card models that we tested to check compatibility with UHS-I speed mode. We will keep populating this list with new microSD Card models.
| **MicroSD Card Model** | **UHS-I Compatibility Result** |
|--------------------|----------------|
| [Kingston Mobile Card microSDHC (16GB)](#kingston-mobile-card-microsdhc-16gb)|not compatible|
| [Sandisk Ultra microSD UHS-I Card (32GB)](#sandisk-ultra-microsd-uhs-i-card-32gb)|**yes, but no performance improvement**|
| [Sandisk Ultra microSD UHS-I Card (16GB)](#sandisk-ultra-microsd-uhs-i-card-16gb)|not compatible|
| [Sandisk Ultra microSD UHS-I Card 48MBps (16GB)](#sandisk-ultra-microsd-uhs-i-card-48mbps-16gb)|not compatible|
| [Sandisk Ultra microSD UHS-I Card 30MBps (8GB)](#sandisk-ultra-microsd-uhs-i-card-30mbps-8gb)|**yes, but no performance improvement**|
| [Strontium Nitro MicroSD Card (16GB)](#strontium-nitro-microsd-card-16gb)|**yes, performance boosted**|
| [Toshiba MicroSD Exceria Pro (16GB)](#toshiba-microsd-exceria-pro-16gb)|not compatible|
| [Transcend microSDHC Premium (8GB)](#transcend-microsdhc-premium-8gb)|**yes, but no performance improvement**|
#### Kingston Mobile Card microSDHC (16GB)
@ -194,17 +216,15 @@ sudo sed -i '/^dmesg -n 8/d' /etc/rc.local
| Serial Number | 0x5b3003c7 |
| Manufacture Date | 07/2018 |
| Capacity Standard | SDHC |
| SD version^ | 1.0 |
| Mode^ | SD Legacy |
| Bus Speed^ | 25000000 |
| Bus Width^ | 4-bit |
| SD version* | 1.0 |
| Mode* | SD Legacy |
| Bus Speed* | 25000000 |
| Bus Width* | 4-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
Failed!
*Test Result* : Failed!
```
mmc0: new SDHC card at address 0001
@ -243,7 +263,7 @@ And the still did not finished the test after 8 hours.
---
#### Sandisk Ultra microSD UHS-I Card For Smartphone (32GB)
#### Sandisk Ultra microSD UHS-I Card (32GB)
![Sandisk Ultra smartphone 32GB](/img/sdcard/sandisk_ultra_uhs-i_for_smartphone_32gb.jpg)
@ -260,13 +280,13 @@ And the still did not finished the test after 8 hours.
| Serial Number | 0x0c9daa71 |
| Manufacture Date | 04/2014 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 4-bit |
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 4-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
@ -280,11 +300,11 @@ mmcblk0: error -84 transferring data, sector 62333824, nr 8, cmd response 0x900,
Even though there are some errors, the test finished without much improvement.
![Sandisk Ultra smartphone 32GB Test Result](/img/sdcard/test_result_sandisk_ultra_uhs-i_for_smartphone_32gb.png)
![!Sandisk Ultra smartphone 32GB Test Result](/img/sdcard/test_result_sandisk_ultra_uhs-i_for_smartphone_32gb.png)
---
#### Sandisk Ultra microSD UHS-I Card For Smartphone (16GB)
#### Sandisk Ultra microSD UHS-I Card (16GB)
![Sandisk Ultra smartphone 16GB](/img/sdcard/sandisk_ultra_uhs-i_for_smartphone_16gb.jpg)
@ -301,17 +321,15 @@ Even though there are some errors, the test finished without much improvement.
| Serial Number | 0xa5253c77 |
| Manufacture Date | 04/2017 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 4-bit |
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 4-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
Failed!
*Test Result* : Failed!
```
mmc0: new ultra high speed DDR50 SDHC card at address aaaa
@ -354,17 +372,15 @@ The card was not detected by Linux.
| Serial Number | 0x349f2b91 |
| Manufacture Date | 01/2016 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 4-bit |
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 4-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
Failed!
*Test Result* : Failed!
```
mmc0: new ultra high speed DDR50 SDHC card at address aaaa
@ -401,13 +417,13 @@ The card was not detected by Linux.
| Serial Number | 0x2369e07f |
| Manufacture Date | 12/2013 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 4-bit |
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 4-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
@ -421,7 +437,7 @@ mmcblk0: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card s
Even though there are some errors, the test finished. Many of test cases see performance reduction.
![Sandisk Ultra 30 MBps Test Result](/img/sdcard/test_result_sandisk_ultra_uhs-i_8gb.png)
![!Sandisk Ultra 30 MBps Test Result](/img/sdcard/test_result_sandisk_ultra_uhs-i_8gb.png)
---
@ -442,13 +458,13 @@ Even though there are some errors, the test finished. Many of test cases see per
| Serial Number | 0x954b266b |
| Manufacture Date | 09/2016 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 1-bit |
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 1-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
@ -463,7 +479,7 @@ mmc0: Tuning failed, falling back to fixed sampling clock
Even though there are some warnings, the test finished.
![Strontium Nitro Test Result](/img/sdcard/test_result_strontium_nitro_16gb.png)
![!Strontium Nitro Test Result](/img/sdcard/test_result_strontium_nitro_16gb.png)
---
@ -485,17 +501,15 @@ Even though there are some warnings, the test finished.
| Serial Number | 0xd2a0e6a3 |
| Manufacture Date | 11/2016 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 4-bit |
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 4-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
* Value taken from U-Boot "mmc info".
*Test Result*
Failed!
*Test Result* : Failed!
```
mmc0: error -84 whilst initialising SD card
@ -522,13 +536,10 @@ The card was not detected by Linux.
| Serial Number | 0x4568e585 |
| Manufacture Date | 06/2014 |
| Capacity Standard | SDHC |
| SD version^ | 3.0 |
| Mode^ | SD High Speed (50MHz) |
| Bus Speed^ | 50000000 |
| Bus Width^ | 1-bit |
!!! Notes
^ Value taken from U-Boot "mmc info".
| SD version* | 3.0 |
| Mode* | SD High Speed (50MHz) |
| Bus Speed* | 50000000 |
| Bus Width* | 1-bit |
*Test Result*
@ -538,4 +549,8 @@ mmcblk0: mmc0:b368 USD 7.45 GiB
mmcblk0: p1
```
![Transcend Premium Test Result](/img/sdcard/test_result_transcend_premium_8gb.png)
![!Transcend Premium Test Result](/img/sdcard/test_result_transcend_premium_8gb.png)
---
**Value taken from U-Boot "mmc info"*

2
mkdocs.yml
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@ -72,9 +72,9 @@ pages:
- GPIO : 'gpio.md'
- I2C (OLED) : 'i2c.md'
- LED : 'led.md'
- SDIO (SD Card) : 'sdcard.md'
- PWM (Fan) : 'pwm.md'
- SPI (NOR Flash) : 'spi.md'
- SD Card : 'sdcard.md'
- Development:
- Armbian : 'armbian.md'
- FreeBSD : 'freebsd.md'