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arm/km: use spi claim bus to switch between SPI and NAND

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We overwrite these weak functions from the kirkwood spi code to
use our own method to be able to switch between the SPI NOR and
the NAND flash. This is needed e.g. to update the u-boot. The former
command do_spi_toggle can therefore be removed. And the usage of
this command is removed from the u-boot update command in the
u-boot environment.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
This commit is contained in:
Valentin Longchamp
2012-06-13 03:01:03 +00:00
committed by Albert ARIBAUD
parent dacc8c6f79
commit 0c25defccd
2 changed files with 13 additions and 40 deletions
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44
board/keymile/km_arm/km_arm.c
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@@ -33,6 +33,7 @@
#include <nand.h>
#include <netdev.h>
#include <miiphy.h>
#include <spi.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/kirkwood.h>
@@ -284,48 +285,17 @@ int board_init(void)
return 0;
}
#if defined(CONFIG_CMD_SF)
int do_spi_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
int board_spi_claim_bus(struct spi_slave *slave)
{
u32 tmp;
if (argc < 2)
return cmd_usage(cmdtp);
if ((strcmp(argv[1], "off") == 0)) {
printf("SPI FLASH disabled, NAND enabled\n");
/* Multi-Purpose Pins Functionality configuration */
kwmpp_config[0] = MPP0_NF_IO2;
kwmpp_config[1] = MPP1_NF_IO3;
kwmpp_config[2] = MPP2_NF_IO4;
kwmpp_config[3] = MPP3_NF_IO5;
kirkwood_mpp_conf(kwmpp_config, NULL);
tmp = readl(KW_GPIO0_BASE);
writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
} else if ((strcmp(argv[1], "on") == 0)) {
printf("SPI FLASH enabled, NAND disabled\n");
/* Multi-Purpose Pins Functionality configuration */
kwmpp_config[0] = MPP0_SPI_SCn;
kwmpp_config[1] = MPP1_SPI_MOSI;
kwmpp_config[2] = MPP2_SPI_SCK;
kwmpp_config[3] = MPP3_SPI_MISO;
kirkwood_mpp_conf(kwmpp_config, NULL);
tmp = readl(KW_GPIO0_BASE);
writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE);
} else {
return cmd_usage(cmdtp);
}
kw_gpio_set_value(KM_FLASH_GPIO_PIN, 0);
return 0;
}
U_BOOT_CMD(
spitoggle, 2, 0, do_spi_toggle,
"En-/disable SPI FLASH access",
"<on|off> - Enable (on) or disable (off) SPI FLASH access\n"
);
#endif
void board_spi_release_bus(struct spi_slave *slave)
{
kw_gpio_set_value(KM_FLASH_GPIO_PIN, 1);
}
int dram_init(void)
{