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ARM: ep93xx: Add lm70 HWMON sensor to TS-72xx boards 

Register the TI TMP122 (lm70) temperature sensor driver for the TS-72xx
boards.

Originaly from Florian Fainelli. Updated to the new spi-ep93xx chip select
method.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
H Hartley Sweeten 2017-09-03 10:43:47 -07:00 committed by Linus Walleij
parent 97c3bca922
commit 7aef828dfc
1 changed files with 26 additions and 0 deletions
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26
arch/arm/mach-ep93xx/ts72xx.c
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@ -18,7 +18,10 @@
#include <linux/io.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/platform_data/spi-ep93xx.h>
#include <mach/gpio-ep93xx.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@ -230,6 +233,27 @@ static struct platform_device ts73xx_fpga_device = {
#endif
/*************************************************************************
* SPI Bus
*************************************************************************/
static struct spi_board_info ts72xx_spi_devices[] __initdata = {
{
.modalias = "tmp122",
.max_speed_hz = 2 * 1000 * 1000,
.bus_num = 0,
.chip_select = 0,
},
};
static int ts72xx_spi_chipselects[] __initdata = {
EP93XX_GPIO_LINE_F(2), /* DIO_17 */
};
static struct ep93xx_spi_info ts72xx_spi_info __initdata = {
.chipselect = ts72xx_spi_chipselects,
.num_chipselect = ARRAY_SIZE(ts72xx_spi_chipselects),
};
static void __init ts72xx_init_machine(void)
{
ep93xx_init_devices();
@ -242,6 +266,8 @@ static void __init ts72xx_init_machine(void)
if (board_is_ts7300())
platform_device_register(&ts73xx_fpga_device);
#endif
ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices,
ARRAY_SIZE(ts72xx_spi_devices));
}
MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")