Em quinta-feira, 23 de janeiro de 2014 13h59min19s UTC-3, [email protected]
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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