Hi,
I would also like to design a board based on FRDM-LS1012A, with uBoot in NOR FLASH, and store Linux OS filesystem in eMMC NAND FLASH or SD card.
I'm using Lede Openwrt OS.
Huy (or anyone), did you manage to get it work?
That's what I've tried:
Hardware:
In the FRDM-LS1012A, I've connected the SDHC1 lines to a SD card to test:
SDHC1_CLK J1-pin 6
SDHC1_CMD J1-pin 8
SDHC1_DAT0 J1-pin 10
SDHC1_DAT1 J1-pin 12
SDHC1_DAT2 J1-pin 14
SDHC1_DAT3 J1-pin 16
I've got 3,3V power supply from J3 10 and 4 pins, and GND from J3 12 and 14 pins.
Software:
First, it seems that RCW configuration is ok:
SDHC1_BASE is 0b01 ---> SDHC1_CMD, SDHC1_DAT[0..3], SDHC1_CLK
SDHC1_CD is 0b0 ---> GPIO_1[21]
SDHC1_WP is 0b0 ---> GPIO_1[22]
SDHC1_VSEL is 0b0 ---> GPIO_1[23]
In uboot directory, I run:
make menuconfig
and activated:
Device Drivers ---> MMC host controller support ---> MMC/SD/SDIO card support (CONFIG_MMC=y)
and
Command line interface ---> Device access commands ---> mmc (CONFIG_CMD_MMC=y)
to get mmc command support in u-boot.
In dts file:
uboot-layerscape-2017.09/arch/arm/dtsuboot/arch/arm/dts/fsl-ls1012a-frdm.dts
I've activated the esdhc0 driver:
&esdhc0 {
status = "okay";
};
In /uboot-layerscape-2017.09/include/configs/ls1012afrdm.h
I've added:
/* MMC */
#ifdef CONFIG_MMC
#define CONFIG_FSL_ESDHC
#define CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
#endif
I've also included this code to initialize mmc driver, in file:
/uboot-layerscape-2017.09/board/freescale/ls1012afrdm/ls1012afrdm.c
#include <mmc.h>
#include <fsl_esdhc.h>
(...)
#ifdef CONFIG_FSL_ESDHC
struct fsl_esdhc_cfg esdhc_cfg[1] = {
{CONFIG_SYS_FSL_ESDHC_ADDR},
};
int board_mmc_init(bd_t *bis)
{
esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
return fsl_esdhc_initialize(bis, &esdhc_cfg[0]);
}
#endif
As I saw in another board.
But,in uboot console, I've got:
Reset Configuration Word (RCW):
00000000: 08000008 00000000 00000000 00000000
00000010: 33050000 c000000c 40000000 00001800
00000020: 00000000 00000000 00000000 000c4571
00000030: 00000000 00c28120 00000096 00000000
I2C: ready
DRAM: 446 MiB
PPA Firmware: Version LSDK-17.09-update-103017
Using SERDES1 Protocol: 13061 (0x3305)
MMC: FSL_SDHC: 0
SF: Detected s25fs512s with page size 512 Bytes, erase size 256 KiB, total 64 MiB
In: serial
Out: serial
Err: serial
Model: LS1012A FREEDOM Board
Board: LS1012AFRDM Net: PFE class pe firmware
PFE tmu pe firmware
ls1012a_configure_serdes 0
ls1012a_configure_serdes 1
(...)
=> mmc list
FSL_SDHC: 0
=> mmc dev 0
mmc_init: -70, time 33
=> mmc info
mmc_init: -70, time 33
It gives the same response, with or without card: a timeout.
I can see the SDHC1_CLK signal in oscilloscope, but there is no signal in the rest of the SDHC lines.
Could anyone help to make it work?
Thanks in advance.
