Re: slow MMC over SPI
Hello, I am trying to enable the SD over SPI on a emebedded system with one processor powerpc mpc5200b; you have enabled mmc over spi into a native spi or psc spi? regards, Fabio Andre Schwarz ha scritto: All, has anybody made some investigations about performance of a SD/MMC card on SPI ? Actually I'm using various cards (different speed classes) on an SPI bus of a MPC8343 cpu. Everything is working fine basically, i.e. card is detected properly and block device can be mounted and used. SPI clock is adjusted to the card's capabilities and is running quite fast (>30MHz). But between consecutive reads/writes there's a fixed gap of 2us thus yielding a poor performance of approx. 300KBytes/sec. The spi bus is utilized only ~10%. Any ideas where this comes from ? Ist it a fixed delay regarding to some kind of spec or is it possibly a spi driver/mmc layer issue ? regards, Andre Schwarz MATRIX VISION GmbH, Talstraße 16, DE-71570 Oppenweiler - Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschäftsführer: Gerhard Thullner, Werner Armingeon, Uwe Furtner ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev . ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
SD-MMC over SPI on PSC6
Hello, I have an embedded system with an on-board processor powerpc MPC5200B and Linux kernel 2.6.22, I must turn over to MMC SPI on the PSC6. The MMC over SPI is connected to MPC5200b, here's how: MPC5200B | |-- PSC1_2 |--->Chip_Select (out)-| | | | | SD CARD ETH_17 |---SPI_TXD (out)---| | | | | PSC6_3 |--->SPI_CLK (out)---| | |-- Now on the menuconfig enabling these options: $ make ARCH=powerpc CROSS_COMPILE=powerpc-linux-gnu- menuconfig Platform support ---> [*] MPC5200 (L25R) bugfix support [*] Freescale Lite5200 Eval Board Device Drivers ---> SPI Support ---> [*] SPI support <*> Freescale MPC52xx PSC SPI controller Now I have applied those patch: http://www.mail-archive.com/[EMAIL PROTECTED]/msg00150.html Now on the menuconfig enabling these options: $ make ARCH=powerpc CROSS_COMPILE=powerpc-linux-gnu- menuconfig Device Drivers ---> MMC/SD card support ---> [*] MMC debugging <*> MMC block device driver <*> MMC host test driver <*> MMC/SD over SPI Is correct applied those patch and enable those options into menuconfig? thanks Fabio ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
Re: MPC5200b MMC over SPI into PSC6
Hello, in uboot i have setting the bootargs variable: => bootargs debug console=ttyPSC0,115200 root=/dev/ram => saveenv If I'm not wrong, the right sequence of commands should be the following: $ make ARCH=powerpc mpc5200_defconfig $ make ARCH=powerpc menuconfig .. [customizations]... $ make ARCH=powerpc CROSS_COMPILE=powerpc-linux-gnu- cuImage.lite5200b and this is the output: .. CHK include/linux/version.h CHK include/linux/utsrelease.h CALLscripts/checksyscalls.sh CHK include/linux/compile.h CALLarch/powerpc/kernel/systbl_chk.sh WRAParch/powerpc/boot/cuImage.lite5200b DTC: dts->dtb on file "/home/ftosetto/linux-2.6.25.2-lite5200/arch/powerpc/boot/dts/lite5200b.dts" Image Name: Linux-2.6.25.2 Created: Mon May 12 10:29:40 2008 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:1518744 Bytes = 1483.15 kB = 1.45 MB Load Address: 0x0040 Entry Point: 0x00400550 At this point I've loaded the cuImage and rootfs.uimage on the board: => usb start => usb scan => fatload usb 0 0x0300 cuImage.lite5200b => fatload usb 0 0x0400 rootfs.uimage => bootm 0x0300 0x0400 but it still hangs after this: ## Booting image at 0300 ... Image Name: Linux-2.6.25.2 Created: 2008-05-12 7:39:07 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size:1589091 Bytes = 1.5 MB Load Address: 0040 Entry Point: 00400550 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Loading RAMDisk Image at 0400 ... Image Name: RamDisk Image RadioNav Created: 2007-10-24 15:48:39 UTC Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size:1839123 Bytes = 1.8 MB Load Address: Entry Point: Verifying Checksum ... OK Loading Ramdisk to 0fd89000, end 0ff4a013 ... OK Memory <- <0x0 0x1000> (256MB) CPU clock-frequency <- 0xbcd3d80 (198MHz) CPU timebase-frequency <- 0x1f78a40 (33MHz) CPU bus-frequency <- 0x7de2900 (132MHz) zImage starting: loaded at 0x0040 (sp: 0x0ff4a958) Allocating 0x34d42c bytes for kernel ... gunzipping (0x <- 0x0040d000:0x007510f0)...done 0x32d150 bytes Using loader supplied ramdisk at 0xfd89000-0xff4a013 initrd head: 0x1f8b0808 Linux/PowerPC load: debug console=ttyPSC0,115200 root=/dev/ram Finalizing device tree... flat tree at 0x75e300 Where is the problem? The problem is the my rootfs.uimage? Do you have any idea? Best regards, Fabio Grant Likely ha scritto: On Fri, May 9, 2008 at 9:02 AM, Fabri <[EMAIL PROTECTED]> wrote: Thanks for the patches, now some more rows are printed after RamDisk loading: Verifying Checksum ... OK Loading Ramdisk to 0fe68000, end 0ff49bf2 ... OK Memory <- <0x0 0x1000> (256MB) CPU clock-frequency <- 0xbcd3d80 (198MHz) CPU timebase-frequency <- 0x1f78a40 (33MHz) CPU bus-frequency <- 0x7de2900 (132MHz) zImage starting: loaded at 0x0040 (sp: 0x0ff4a958) Allocating 0x32d410 bytes for kernel ... gunzipping (0x <- 0x0040d000:0x00730fd4)...done 0x30d150 bytes Using loader supplied ramdisk at 0xfe68000-0xff49bf2 initrd head: 0x1f8b0808 Linux/PowerPC load: ^^ Doesn't look like you are passing a kernel parameters line. The kernel probably is booting, but doesn't know where to output the console. Try adding "console=ttyPSC0,115200". Cheers, g. ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
Re: MPC5200b MMC over SPI into PSC6
MMU:exit
setup_arch:
enter
setup_arch:
bootmem
arch:
exit
[0.00] Linux version 2.6.24.4 ([EMAIL PROTECTED]) (gcc
version 4.1
.2 (Sourcery G++ Lite 4.1-51)) #3 Thu May 8 16:03:21 CEST
2008
[0.00] Zone PFN
ranges:
[0.00] DMA 0 ->
65536
[0.00] Normal 65536 ->
65536
[0.00] Movable zone start PFN for each
node
[0.00] early_node_map[1] active PFN
ranges
[0.00] 0:0 ->
65536
[0.00] Built 1 zonelists in Zone order, mobility grouping on.
Total pag
es:
65024
[0.00] Kernel command
line:
[0.00] PID hash table entries: 1024 (order: 10, 4096
bytes)
[ 91.768263] console [ttyPSC0] enabled
...
Do you have any idea about how to make it working doing all the stuff
with ARCH=powerpc?
Best regards,
Fabio
Grant Likely ha scritto:
On Wed, May 7, 2008 at 6:49 AM, Fabio Tosetto <[EMAIL PROTECTED]> wrote:
I've tried to port my exesting configurations to the powerpc tree but some
configurations files are missing.
First, create a new .dts file for your board in arch/powerpc/boot/dts.
(just copy the lite5200.dts file). Modify the .dts to have your
board's name (in the form ",") in the compatible
and model properties.
Next, add your boards name to the list of boards in
arch/powerpc/platforms/52xx/mpc5200_simple.c.
I need to set PSC3 - PSC4 in uart mode:
before in file *arch/ppc/platforms/lite5200.c* I added
struct mpc52xx_psc_func mpc52xx_psc_functions[] = {
{ .id = 3,
.func = "uart",
},
{ .id = 4,
.func = "uart",
},
{ .id = -1, /* End entry */
.func = NULL,
}
};
Edit your boards .dts file and uncomment PSCs 3 and 4. Comment out
PSC1 if you aren't using it.
I need to set PSC4 as a low level debug: *
*before in file *arch/ppc/platforms/lite5200.h *I added
#define MPC52xx_PF_CONSOLE_PORT 4/* PSC4 */
I don't think we have any early debug enabled yet in arch/powerpc for
the mpc5200.
Finally I need to set the virtual memory translation on a range of 128 MB:
before in file *arch/ppc/kernel/head.S *I added
/*orir11,r11,BL_128M<<2|0x2set up BAT registers for 604 */
orir11,r11,BL_128M<<2|0x2/* set up BAT registers for 604 */
could you please explain me how to do the same operations in powerpc tree??
New file is arch/powerpc/kernel/head_32.S. I don't think that is the
cleanest way to do it though. Why do you need to change the BAT
mapping from 256 to 128?
Cheers,
g.
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Re: MPC5200b MMC over SPI into PSC6
I've tried to port my exesting configurations to the powerpc tree but
some configurations files are missing.
I need to set PSC3 - PSC4 in uart mode:
before in file *arch/ppc/platforms/lite5200.c* I added
struct mpc52xx_psc_func mpc52xx_psc_functions[] = {
{ .id = 3,
.func = "uart",
},
{ .id = 4,
.func = "uart",
},
{ .id = -1, /* End entry */
.func = NULL,
}
};
I need to set PSC4 as a low level debug: *
*before in file *arch/ppc/platforms/lite5200.h *I added
#define MPC52xx_PF_CONSOLE_PORT 4/* PSC4 */
Finally I need to set the virtual memory translation on a range of 128 MB:
before in file *arch/ppc/kernel/head.S *I added
/*orir11,r11,BL_128M<<2|0x2set up BAT registers for 604 */
orir11,r11,BL_128M<<2|0x2/* set up BAT registers for 604 */
could you please explain me how to do the same operations in powerpc tree??
thanks Fabio
Grant Likely ha scritto:
On Mon, May 5, 2008 at 12:12 PM, Fabio Tosetto <[EMAIL PROTECTED]> wrote:
Hello, I have an embedded system with an on-board processor powerpc MPC5200B
and Linux kernel 2.6.22,
I must turn over to MMC SPI on the PSC6.
First, I
have enabled PSC6:
in ../arch/ppc/platforms/lite5200.c added PSC6 in SPI mode
You're using arch/ppc which is depreciated. You should move to using
arch/powerpc (set ARCH=powerpc when compiling). Devices are then
enabled in the device tree source file
arch/powerpc/boot/dts/lite5200b.dts.
Many things have changed with MPC5200 support in the last year, you
should also use the latest kernel release (2.6.25.2 when it is
released. If you use 2.6.25.1, then there is a trivial bug in the psc
serial port driver that you'll need to fix. I'll include the link to
the patch below)
Cheers,
g.
http://ozlabs.org/pipermail/linuxppc-dev/2008-April/055495.html
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MMC ove SPI PSC6 in MPC5200b
Hello, I am trying to enable the SD over SPI on a emebedded system with one processor powerpc mpc5200b, has someone patches for the Linux 2.6.22 versions? Thanks Fabio. ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
MPC5200b MMC over SPI into PSC6
Hello, I have an embedded system with an on-board processor powerpc
MPC5200B
and Linux kernel 2.6.22,
I must turn over to MMC SPI on the PSC6.
First, I
have enabled PSC6:
in ../arch/ppc/platforms/lite5200.c added PSC6 in SPI mode
struct mpc52xx_psc_func mpc52xx_psc_functions[] = {
{ .id = 3,
.func = "uart",
},
{ .id = 4,
.func = "uart",
},
{ .id = 5,
.func = "spi",
},
};
in ..
/arch/powerpc/boot/dts/lite5200b.dts enabled PSC6 in SPI mode
// PSC6 in spi mode example
[EMAIL PROTECTED] { // PSC6
device_type = "spi";
compatible = "mpc5200b-psc-spi\0mpc5200-psc-spi";
cell-index = <5>;
reg =
<2c00 100>;
interrupts = <2 4 0>;
interrupt-parent = <&mpc5200_pic>;
};
Now on the menuconfig enabling these options:
$ make ARCH=powerpc
CROSS_COMPILE=powerpc-linux-gnu- menuconfig
Platform support --->
[*]
MPC5200 (L25R) bugfix support
[*] Freescale Lite5200 Eval Board
Device
Drivers ---> SPI Support --->
[*] SPI support
<*> Freescale MPC52xx
PSC SPI controller
this options settings the CONFIG_SPI_MPC52xx_PSC=y variable
into .config
When linux booting, if I debug ../driver/spi/mpc52xx_psc_spi.c,
see that:
bus platform: add driver mpc52xx-psc-
spi
bus platform: remove driver mpc52xx-psc-spi
drivers/spi/mpc52xx_psc_spi.c:
of_register_platform_driver failed (-19)
why??
any idea??
Someone knows how
to enable mmc over spi on PSC6?
thanks Fabio
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