Commit 8237bf08 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Kumar Gala

[POWERPC] MPC832x_RDB: Update dts to use SPI1 in QE, register mmc_spi stub

Enabled using SPI controller on the MPC832x RDB board.  We currently use
a modalias of "spidev" as a place holder (replace with "mmc_spie") until
the mmc_spi driver support is merged in.

This gets us the ability to test SPI until then.
Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 26f6cb99
...@@ -175,7 +175,7 @@ spi@4c0 { ...@@ -175,7 +175,7 @@ spi@4c0 {
reg = <4c0 40>; reg = <4c0 40>;
interrupts = <2>; interrupts = <2>;
interrupt-parent = <&qeic>; interrupt-parent = <&qeic>;
mode = "cpu"; mode = "cpu-qe";
}; };
spi@500 { spi@500 {
......
...@@ -15,6 +15,7 @@ ...@@ -15,6 +15,7 @@
*/ */
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/spi/spi.h>
#include <asm/of_platform.h> #include <asm/of_platform.h>
#include <asm/time.h> #include <asm/time.h>
...@@ -22,6 +23,7 @@ ...@@ -22,6 +23,7 @@
#include <asm/udbg.h> #include <asm/udbg.h>
#include <asm/qe.h> #include <asm/qe.h>
#include <asm/qe_ic.h> #include <asm/qe_ic.h>
#include <sysdev/fsl_soc.h>
#include "mpc83xx.h" #include "mpc83xx.h"
...@@ -32,6 +34,50 @@ ...@@ -32,6 +34,50 @@
#define DBG(fmt...) #define DBG(fmt...)
#endif #endif
static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity)
{
pr_debug("%s %d %d\n", __func__, cs, polarity);
par_io_data_set(3, 13, polarity);
}
static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity)
{
pr_debug("%s %d %d\n", __func__, cs, polarity);
par_io_data_set(3, 13, !polarity);
}
static struct spi_board_info mpc832x_spi_boardinfo = {
.bus_num = 0x4c0,
.chip_select = 0,
.max_speed_hz = 50000000,
/*
* XXX: This is spidev (spi in userspace) stub, should
* be replaced by "mmc_spi" when mmc_spi will hit mainline.
*/
.modalias = "spidev",
};
static int __init mpc832x_spi_init(void)
{
if (!machine_is(mpc832x_rdb))
return 0;
par_io_config_pin(3, 0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
par_io_config_pin(3, 1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
par_io_config_pin(3, 2, 3, 0, 1, 0); /* SPI1 CLK, I/O */
par_io_config_pin(3, 3, 2, 0, 1, 0); /* SPI1 SEL, I */
par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS, O */
par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */
return fsl_spi_init(&mpc832x_spi_boardinfo, 1,
mpc83xx_spi_activate_cs,
mpc83xx_spi_deactivate_cs);
}
device_initcall(mpc832x_spi_init);
/* ************************************************************************ /* ************************************************************************
* *
* Setup the architecture * Setup the architecture
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment