[PATCH v1] MXC: Add SPI and MC13783 support for i.MX31 Litekit board.
From: Magnus Lilja <hidden>
Date: 2009-11-14 19:27:54
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Signed-off-by: Magnus Lilja <redacted> --- Tested with the mc13783-rtc/adc.c drivers from pengutronix (not in mainline yet) on actual hardware. arch/arm/mach-mx3/mx31lite.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mx3/mx31lite.c b/arch/arm/mach-mx3/mx31lite.c
index a8d57de..228f6ac 100644
--- a/arch/arm/mach-mx3/mx31lite.c
+++ b/arch/arm/mach-mx3/mx31lite.c@@ -25,6 +25,8 @@ #include <linux/platform_device.h> #include <linux/gpio.h> #include <linux/smsc911x.h> +#include <linux/mfd/mc13783.h> +#include <linux/spi/spi.h> #include <mach/hardware.h> #include <asm/mach-types.h>
@@ -39,6 +41,8 @@ #include <mach/iomux-mx3.h> #include <mach/irqs.h> #include <mach/mxc_nand.h> +#include <mach/spi.h> + #include "devices.h" /*
@@ -53,6 +57,13 @@ static unsigned int mx31lite_pins[] = { MX31_PIN_RXD1__RXD1, /* LAN9117 IRQ pin */ IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO), + /* MC13783 IRQ */ + MX31_PIN_GPIO1_3__GPIO1_3, + /* SPI2 */ + MX31_PIN_CSPI2_MOSI__MOSI, + MX31_PIN_CSPI2_MISO__MISO, + MX31_PIN_CSPI2_SCLK__SCLK, + MX31_PIN_CSPI2_SS0__SS0, }; static struct imxuart_platform_data uart_pdata = {
@@ -92,6 +103,30 @@ static struct platform_device smsc911x_device = { }, }; +static int mx31lite_spi1_cs[] = { + MXC_SPI_CS(0), +}; + +static struct spi_imx_master mx31lite_spi1_master = { + .chipselect = mx31lite_spi1_cs, + .num_chipselect = ARRAY_SIZE(mx31lite_spi1_cs), +}; + +static struct mc13783_platform_data mc13783_data = { + .flags = MC13783_USE_ADC | MC13783_USE_RTC, +}; + +static struct spi_board_info mx31lite_spi_devs[] = { + { + .modalias = "mc13783", + .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3), + .max_speed_hz = 1000000, + .bus_num = 1, + .chip_select = 0, + .platform_data = &mc13783_data, + }, +}; + /* * This structure defines the MX31 memory map. */
@@ -139,6 +174,13 @@ static void __init mxc_board_init(void) gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6)); platform_device_register(&smsc911x_device); } + + /* SPI and MC13783 setup */ + mxc_register_device(&mxc_spi_device1, &mx31lite_spi1_master); + gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3), "pmic-irq"); + gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3)); + spi_register_board_info(mx31lite_spi_devs, + ARRAY_SIZE(mx31lite_spi_devs)); } static void __init mx31lite_timer_init(void)
--
1.5.6