Why dont you just add the device to the fex file ??
activate your spix_para parameters
and add something like:
|[spi_devices]|
spi_dev_num=1
|[spi_board0]|
|modalias| |= ||"|mcp251x|"|||
|max_speed_hz| |= ||12000000|
|bus_num| |= ||1|
|chip_select| |= ||0|
|mode| |= ||3|
|full_duplex| |= ||0|
|manual_cs| |= ||0|
With spidev it works well with modalias "spidev".
Gustavo Zamboni
Le 23/01/2014 18:03, vinicius...@gmail.com a écrit :
Em quinta-feira, 23 de janeiro de 2014 13h59min19s UTC-3, vinic...@gmail.com
escreveu:
Em terça-feira, 21 de janeiro de 2014 08h44min19s UTC-3, Tomas Novotny
escreveu:
Hi All,
I'm trying to use some SPI devices on A10s OLinuXino. It was flawless for
simple MCU driven by spidev (everything needed is defined in FEX). Now I'm
trying to connect external CAN over SPI (MCP2515).
The mcp251x driver needs to pass oscillator frequency through the
mcp251x_platform_data structure. Is there any clean way how to do it on 3.4
linux-sunxi? It seems that platform data for SPI board aren't passed by sunxi
SPI driver.
I'm using Debian image with custom built 3.4.61 linux-sunxi.
Thanks to all,
Tomas
You can change by yourself spi_sunxi.c, something like that:
diff --git a/drivers/spi/spi_sunxi.c b/drivers/spi/spi_sunxi.c
index a3792fd..2f0ab7c 100644
--- a/drivers/spi/spi_sunxi.c
+++ b/drivers/spi/spi_sunxi.c
@@ -28,6 +28,7 @@
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
+#include <linux/can/platform/mcp251x.h>
#include <asm/io.h>
#include <plat/dma.h>
@@ -134,6 +135,10 @@ struct sunxi_spi {
int cs_bitmap;/* cs0- 0x1; cs1-0x2, cs0&cs1-0x3. */
};
+static struct mcp251x_platform_data mcp251x_info = {
+ .oscillator_frequency = 8000000,
+};
+
Sorry, something like that:
diff --git a/drivers/spi/spi_sunxi.c b/drivers/spi/spi_sunxi.c
index a3792fd..2f0ab7c 100644
--- a/drivers/spi/spi_sunxi.c
+++ b/drivers/spi/spi_sunxi.c
@@ -28,6 +28,7 @@
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
+#include <linux/can/platform/mcp251x.h>
#include <asm/io.h>
#include <plat/dma.h>
@@ -134,6 +135,10 @@ struct sunxi_spi {
int cs_bitmap;/* cs0- 0x1; cs1-0x2, cs0&cs1-0x3. */
};
+static struct mcp251x_platform_data mcp251x_info = {
+ .oscillator_frequency = 8000000,
+};
+
/* config chip select */
s32 aw_spi_set_cs(u32 chipselect, void *base_addr)
{
@@ -1922,6 +1927,7 @@ int __devinit spi_sunxi_register_spidev(void)
{
board = &spi_boards[i];
sprintf(spi_board_name, "spi_board%d", i);
+ board->platform_data = &mcp251x_info;
ret = script_parser_fetch(spi_board_name, "modalias",
(void*)board->modalias, sizeof(char*));
if(ret != SCRIPT_PARSER_OK) {
spi_msg("Get spi devices modalias failed\n");
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