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authorVladimir Zapolskiy <vz@mleia.com>2016-09-19 03:37:14 +0200
committerShawn Guo <shawnguo@kernel.org>2016-09-20 16:34:47 +0200
commit4ed9bb21847b9459cdc16a4027b6058d0540dcc8 (patch)
tree7aaf8bae6246b222943e463100ded2a739521162 /arch/arm/mach-imx
parentARM: imx legacy: kzm: move peripheral initialization to .init_late (diff)
downloadlinux-4ed9bb21847b9459cdc16a4027b6058d0540dcc8.tar.xz
linux-4ed9bb21847b9459cdc16a4027b6058d0540dcc8.zip
ARM: imx legacy: mx31lite: move peripheral initialization to .init_late
The change moves some of peripheral registrations and initializations (all peripherals dependent on GPIOs) from .init_machine to .init_late level, this allows to safely shift the shared GPIO controller driver initialization level after init level of i.MX IOMUXC driver. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r--arch/arm/mach-imx/mach-mx31lite.c68
-rw-r--r--arch/arm/mach-imx/mx31lite-db.c33
2 files changed, 48 insertions, 53 deletions
diff --git a/arch/arm/mach-imx/mach-mx31lite.c b/arch/arm/mach-imx/mach-mx31lite.c
index 4822a1738de4..f033a57d5694 100644
--- a/arch/arm/mach-imx/mach-mx31lite.c
+++ b/arch/arm/mach-imx/mach-mx31lite.c
@@ -52,6 +52,19 @@
*/
static unsigned int mx31lite_pins[] = {
+ /* UART1 */
+ MX31_PIN_CTS1__CTS1,
+ MX31_PIN_RTS1__RTS1,
+ MX31_PIN_TXD1__TXD1,
+ MX31_PIN_RXD1__RXD1,
+ /* SPI 0 */
+ MX31_PIN_CSPI1_SCLK__SCLK,
+ MX31_PIN_CSPI1_MOSI__MOSI,
+ MX31_PIN_CSPI1_MISO__MISO,
+ MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
+ MX31_PIN_CSPI1_SS0__SS0,
+ MX31_PIN_CSPI1_SS1__SS1,
+ MX31_PIN_CSPI1_SS2__SS2,
/* LAN9117 IRQ pin */
IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
/* SPI 1 */
@@ -64,6 +77,23 @@ static unsigned int mx31lite_pins[] = {
MX31_PIN_CSPI2_SS2__SS2,
};
+/* UART */
+static const struct imxuart_platform_data uart_pdata __initconst = {
+ .flags = IMXUART_HAVE_RTSCTS,
+};
+
+/* SPI */
+static int spi0_internal_chipselect[] = {
+ MXC_SPI_CS(0),
+ MXC_SPI_CS(1),
+ MXC_SPI_CS(2),
+};
+
+static const struct spi_imx_master spi0_pdata __initconst = {
+ .chipselect = spi0_internal_chipselect,
+ .num_chipselect = ARRAY_SIZE(spi0_internal_chipselect),
+};
+
static const struct mxc_nand_platform_data
mx31lite_nand_board_info __initconst = {
.width = 1,
@@ -103,13 +133,13 @@ static struct platform_device smsc911x_device = {
* The MC13783 is the only hard-wired SPI device on the module.
*/
-static int spi_internal_chipselect[] = {
+static int spi1_internal_chipselect[] = {
MXC_SPI_CS(0),
};
static const struct spi_imx_master spi1_pdata __initconst = {
- .chipselect = spi_internal_chipselect,
- .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
+ .chipselect = spi1_internal_chipselect,
+ .num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
};
static struct mc13xxx_platform_data mc13783_pdata __initdata = {
@@ -200,8 +230,6 @@ static struct platform_device physmap_flash_device = {
.num_resources = 1,
};
-
-
/*
* This structure defines the MX31 memory map.
*/
@@ -233,29 +261,30 @@ static struct regulator_consumer_supply dummy_supplies[] = {
static void __init mx31lite_init(void)
{
- int ret;
-
imx31_soc_init();
- switch (mx31lite_baseboard) {
- case MX31LITE_NOBOARD:
- break;
- case MX31LITE_DB:
- mx31lite_db_init();
- break;
- default:
- printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
- mx31lite_baseboard);
- }
-
mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
"mx31lite");
+ imx31_add_imx_uart0(&uart_pdata);
+ imx31_add_spi_imx0(&spi0_pdata);
+
/* NOR and NAND flash */
platform_device_register(&physmap_flash_device);
imx31_add_mxc_nand(&mx31lite_nand_board_info);
imx31_add_spi_imx1(&spi1_pdata);
+
+ regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
+}
+
+static void __init mx31lite_late(void)
+{
+ int ret;
+
+ if (mx31lite_baseboard == MX31LITE_DB)
+ mx31lite_db_init();
+
mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
spi_register_board_info(&mc13783_spi_dev, 1);
@@ -265,8 +294,6 @@ static void __init mx31lite_init(void)
if (usbh2_pdata.otg)
imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
- regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
-
/* SMSC9117 IRQ pin */
ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
if (ret)
@@ -294,5 +321,6 @@ MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
.init_irq = mx31_init_irq,
.init_time = mx31lite_timer_init,
.init_machine = mx31lite_init,
+ .init_late = mx31lite_late,
.restart = mxc_restart,
MACHINE_END
diff --git a/arch/arm/mach-imx/mx31lite-db.c b/arch/arm/mach-imx/mx31lite-db.c
index 5a160b7e4fce..c66a006bf2fd 100644
--- a/arch/arm/mach-imx/mx31lite-db.c
+++ b/arch/arm/mach-imx/mx31lite-db.c
@@ -45,19 +45,6 @@
*/
static unsigned int litekit_db_board_pins[] __initdata = {
- /* UART1 */
- MX31_PIN_CTS1__CTS1,
- MX31_PIN_RTS1__RTS1,
- MX31_PIN_TXD1__TXD1,
- MX31_PIN_RXD1__RXD1,
- /* SPI 0 */
- MX31_PIN_CSPI1_SCLK__SCLK,
- MX31_PIN_CSPI1_MOSI__MOSI,
- MX31_PIN_CSPI1_MISO__MISO,
- MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
- MX31_PIN_CSPI1_SS0__SS0,
- MX31_PIN_CSPI1_SS1__SS1,
- MX31_PIN_CSPI1_SS2__SS2,
/* SDHC1 */
MX31_PIN_SD1_DATA0__SD1_DATA0,
MX31_PIN_SD1_DATA1__SD1_DATA1,
@@ -67,11 +54,6 @@ static unsigned int litekit_db_board_pins[] __initdata = {
MX31_PIN_SD1_CMD__SD1_CMD,
};
-/* UART */
-static const struct imxuart_platform_data uart_pdata __initconst = {
- .flags = IMXUART_HAVE_RTSCTS,
-};
-
/* MMC */
static int gpio_det, gpio_wp;
@@ -146,19 +128,6 @@ static const struct imxmmc_platform_data mmc_pdata __initconst = {
.exit = mxc_mmc1_exit,
};
-/* SPI */
-
-static int spi_internal_chipselect[] = {
- MXC_SPI_CS(0),
- MXC_SPI_CS(1),
- MXC_SPI_CS(2),
-};
-
-static const struct spi_imx_master spi0_pdata __initconst = {
- .chipselect = spi_internal_chipselect,
- .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
-};
-
/* GPIO LEDs */
static const struct gpio_led litekit_leds[] __initconst = {
@@ -187,9 +156,7 @@ void __init mx31lite_db_init(void)
mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
ARRAY_SIZE(litekit_db_board_pins),
"development board pins");
- imx31_add_imx_uart0(&uart_pdata);
imx31_add_mxc_mmc(0, &mmc_pdata);
- imx31_add_spi_imx0(&spi0_pdata);
gpio_led_register_device(-1, &litekit_led_platform_data);
imx31_add_imx2_wdt();
imx31_add_mxc_rtc();