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 Tosetto
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