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authorAllen Martin <amartin@nvidia.com>2013-03-16 18:58:02 +0000
committerTom Warren <twarren@nvidia.com>2013-03-25 09:56:05 -0700
commit9000652da0893af8a07f81622b3ef8de6c8725bb (patch)
tree00835e8986dfd8b85470042bf74361cf51b6115a /drivers/spi
parentb6379e15a70cc2e22486e5962927d9de374d877b (diff)
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tegra: remove support for UART SPI switch
This feature was only used for tegra20 seaboard that had a pinmux conflict on the SPI pins. These boards were never manufactured, so remove this support to clean up SPI driver. Signed-off-by: Allen Martin <amartin@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/tegra_spi.c25
1 files changed, 1 insertions, 24 deletions
diff --git a/drivers/spi/tegra_spi.c b/drivers/spi/tegra_spi.c
index ce19095..2662923 100644
--- a/drivers/spi/tegra_spi.c
+++ b/drivers/spi/tegra_spi.c
@@ -28,7 +28,6 @@
#include <asm/gpio.h>
#include <asm/arch/clock.h>
#include <asm/arch/pinmux.h>
-#include <asm/arch/uart-spi-switch.h>
#include <asm/arch-tegra/clk_rst.h>
#include <asm/arch-tegra/tegra_spi.h>
#include <spi.h>
@@ -36,12 +35,6 @@
DECLARE_GLOBAL_DATA_PTR;
-#if defined(CONFIG_SPI_CORRUPTS_UART)
- #define corrupt_delay() udelay(CONFIG_SPI_CORRUPTS_UART_DLY);
-#else
- #define corrupt_delay()
-#endif
-
struct tegra_spi_slave {
struct spi_slave slave;
struct spi_tegra *regs;
@@ -175,16 +168,8 @@ int spi_claim_bus(struct spi_slave *slave)
*/
pinmux_set_func(PINGRP_GMD, PMUX_FUNC_SFLASH);
pinmux_tristate_disable(PINGRP_LSPI);
+ pinmux_set_func(PINGRP_GMC, PMUX_FUNC_SFLASH);
-#ifndef CONFIG_SPI_UART_SWITCH
- /*
- * NOTE:
- * Only set PinMux bits 3:2 to SPI here on boards that don't have the
- * SPI UART switch or subsequent UART data won't go out! See
- * spi_uart_switch().
- */
- /* TODO: pinmux_set_func(PINGRP_GMC, PMUX_FUNC_SFLASH); */
-#endif
return 0;
}
@@ -202,24 +187,16 @@ void spi_cs_activate(struct spi_slave *slave)
{
struct tegra_spi_slave *spi = to_tegra_spi(slave);
- pinmux_select_spi();
-
/* CS is negated on Tegra, so drive a 1 to get a 0 */
setbits_le32(&spi->regs->command, SPI_CMD_CS_VAL);
-
- corrupt_delay(); /* Let UART settle */
}
void spi_cs_deactivate(struct spi_slave *slave)
{
struct tegra_spi_slave *spi = to_tegra_spi(slave);
- pinmux_select_uart();
-
/* CS is negated on Tegra, so drive a 0 to get a 1 */
clrbits_le32(&spi->regs->command, SPI_CMD_CS_VAL);
-
- corrupt_delay(); /* Let SPI settle */
}
int spi_xfer(struct spi_slave *slave, unsigned int bitlen,