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authorValentin Longchamp <valentin.longchamp@keymile.com>2012-06-13 03:01:03 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-07-07 14:07:33 +0200
commit0c25defccdc0461bf6695d7e0fe3091c9da8778e (patch)
tree86a9e4ae4a86be5a090847e052927627b1984bf4 /board/keymile
parentdacc8c6f79aa4016e431278d31431a19d43c6b37 (diff)
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arm/km: use spi claim bus to switch between SPI and NAND
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>
Diffstat (limited to 'board/keymile')
-rw-r--r--board/keymile/km_arm/km_arm.c44
1 files changed, 7 insertions, 37 deletions
diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index ed12b5c..cb3402b 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -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)
{