On 2016/8/31 17:56, Wadim Egorov wrote:
Hello,
I have a RK3288 based board with a Micron eMMC chip (MTFC16GAKAECN-4M
IT). This eMMC is EDEC/MMC standard version 5.0-compliant.
By looking up the emmc AVL for rockchip product line, we didn't test
this eMMC chip yet, so I couldn't say whether it's related to the buggy
eMMC firmware rather than host stack. But it looks more like a buggy
firmware from my debug experience. :)
While doing eMMC boot tests with a 4.4.16 and 4.8.0-rc4 kernel I run
into the following problem after more than 100 cold resets:
[ 3.535448] dwmmc_rockchip ff0c0000.dwmmc: 1 slots initialized
[ 3.543823] dwmmc_rockchip ff0f0000.dwmmc: IDMAC supports 32-bit address mode.
[ 3.551276] dwmmc_rockchip ff0f0000.dwmmc: Using internal DMA controller.
[ 3.558206] dwmmc_rockchip ff0f0000.dwmmc: Version ID is 270a
[ 3.564275] dwmmc_rockchip ff0f0000.dwmmc: DW MMC controller at irq 31,32 bit host data width,256 deep fifo
[ 3.604426] mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[ 3.634510] dwmmc_rockchip ff0f0000.dwmmc: 1 slots initialized
[ 3.645305] leds-pca953x 4-0062: setting platform data
[ 3.656675] ledtrig-cpu: registered to indicate activity on CPUs
[ 3.663200] usbcore: registered new interface driver usbhid
[ 3.668783] usbhid: USB HID core driver
[ 3.672674] usbcore: registered new interface driver r8188eu
[ 3.678393] usbcore: registered new interface driver rtl8723au
[ 3.699210] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 52000000Hz, actual 50000000HZ div = 0)
[ 3.900398] random: crng init done
[ 3.954089] NET: Registered protocol family 10
[ 3.974107] mmc0: Card stuck in programming state! __mmc_switch
[ 3.980027] mmc0: error -110 whilst initialising MMC card
The bootloader I am using has no problems with the eMMC as you can see
below:
barebox@phycore-rk3288:/ devinfo mshc0
Host information:
current clock: 52000000
current buswidth: 8
capabilities: 4bit 8bit sd-hs mmc-hs mmc-52MHz
Card information:
Attached is a MMC card
Version: 4.0
Capacity: 14080 MiB
High capacity card
CID: 13014E52-314A3536-4C11616D-559BA2BD
CSD: D04F0132-0F5913FF-FFFFFFEF-8A4000BF
Max. transfer speed: 52000000 Hz
capabilities: 4bit mmc-hs mmc-52MHz
Manufacturer ID: 13
OEM/Application ID: 014E
Product name: 'R1J56'
Product revision: 4.12
Serial no: 1634555291
Manufacturing date: 10.1999
Parameters:
boot: disabled ("disabled", "boot0", "boot1", "user")
nt_signature: 8a35eb82
probe: 0
Any hints on what the problem could be?
Regards,
Wadim
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Best Regards
Shawn Lin
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