From 73d2b4cdfc09a7a858b3ea1f32f6218b21439b96 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Mon, 17 Oct 2011 08:42:16 +0800 Subject: arm/mx5: add device tree support for imx53 boards It adds device tree support for imx53 boards. Signed-off-by: Shawn Guo Acked-by: Grant Likely Acked-by: Sascha Hauer Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/imx53-dt.c | 126 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 arch/arm/mach-mx5/imx53-dt.c (limited to 'arch/arm/mach-mx5/imx53-dt.c') diff --git a/arch/arm/mach-mx5/imx53-dt.c b/arch/arm/mach-mx5/imx53-dt.c new file mode 100644 index 0000000..ccaa0b8 --- /dev/null +++ b/arch/arm/mach-mx5/imx53-dt.c @@ -0,0 +1,126 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2011 Linaro Ltd. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Lookup table for attaching a specific name and platform_data pointer to + * devices as they get created by of_platform_populate(). Ideally this table + * would not exist, but the current clock implementation depends on some devices + * having a specific name. + */ +static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL), + OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL), + OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL), + OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL), + OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL), + OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL), + OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL), + OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL), + OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL), + OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL), + OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL), + OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL), + OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL), + OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL), + OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL), + OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL), + OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL), + OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL), + { /* sentinel */ } +}; + +static void __init imx53_tzic_add_irq_domain(struct device_node *np, + struct device_node *interrupt_parent) +{ + irq_domain_add_simple(np, 0); +} + +static void __init imx53_gpio_add_irq_domain(struct device_node *np, + struct device_node *interrupt_parent) +{ + static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS - + 32 * 7; /* imx53 gets 7 gpio ports */ + + irq_domain_add_simple(np, gpio_irq_base); + gpio_irq_base += 32; +} + +static const struct of_device_id imx53_irq_match[] __initconst = { + { .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, }, + { .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, }, + { /* sentinel */ } +}; + +static const struct of_device_id imx53_iomuxc_of_match[] __initconst = { + { .compatible = "fsl,imx53-iomuxc-ard", .data = imx53_ard_common_init, }, + { .compatible = "fsl,imx53-iomuxc-evk", .data = imx53_evk_common_init, }, + { .compatible = "fsl,imx53-iomuxc-qsb", .data = imx53_qsb_common_init, }, + { .compatible = "fsl,imx53-iomuxc-smd", .data = imx53_smd_common_init, }, + { /* sentinel */ } +}; + +static void __init imx53_dt_init(void) +{ + struct device_node *node; + const struct of_device_id *of_id; + void (*func)(void); + + of_irq_init(imx53_irq_match); + + node = of_find_matching_node(NULL, imx53_iomuxc_of_match); + if (node) { + of_id = of_match_node(imx53_iomuxc_of_match, node); + func = of_id->data; + func(); + of_node_put(node); + } + + of_platform_populate(NULL, of_default_bus_match_table, + imx53_auxdata_lookup, NULL); +} + +static void __init imx53_timer_init(void) +{ + mx53_clocks_init_dt(); +} + +static struct sys_timer imx53_timer = { + .init = imx53_timer_init, +}; + +static const char *imx53_dt_board_compat[] __initdata = { + "fsl,imx53-ard", + "fsl,imx53-evk", + "fsl,imx53-qsb", + "fsl,imx53-smd", + NULL +}; + +DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)") + .map_io = mx53_map_io, + .init_early = imx53_init_early, + .init_irq = mx53_init_irq, + .handle_irq = imx53_handle_irq, + .timer = &imx53_timer, + .init_machine = imx53_dt_init, + .dt_compat = imx53_dt_board_compat, +MACHINE_END -- cgit v1.1 From 2a3267a489f1dc4284b64a4b88c62011946dc7ff Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 1 Dec 2011 14:35:29 +0800 Subject: arm/imx: fix return type of callback passed to of_irq_init() The of_irq_init() expects the callback passed by .data of of_device_id return 'int' instead of 'void'. This patch fixes it to have irq_init_cb() return the correct value, and in turn have the secondary interrupt controller (gpio in this case) initialized properly and also eliminate the error message 'of_irq_init: children remain, but no parents' which was overlooked before. Signed-off-by: Shawn Guo --- arch/arm/mach-mx5/imx53-dt.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-mx5/imx53-dt.c') diff --git a/arch/arm/mach-mx5/imx53-dt.c b/arch/arm/mach-mx5/imx53-dt.c index ccaa0b8..022bc03 100644 --- a/arch/arm/mach-mx5/imx53-dt.c +++ b/arch/arm/mach-mx5/imx53-dt.c @@ -48,13 +48,14 @@ static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = { { /* sentinel */ } }; -static void __init imx53_tzic_add_irq_domain(struct device_node *np, +static int __init imx53_tzic_add_irq_domain(struct device_node *np, struct device_node *interrupt_parent) { irq_domain_add_simple(np, 0); + return 0; } -static void __init imx53_gpio_add_irq_domain(struct device_node *np, +static int __init imx53_gpio_add_irq_domain(struct device_node *np, struct device_node *interrupt_parent) { static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS - @@ -62,6 +63,8 @@ static void __init imx53_gpio_add_irq_domain(struct device_node *np, irq_domain_add_simple(np, gpio_irq_base); gpio_irq_base += 32; + + return 0; } static const struct of_device_id imx53_irq_match[] __initconst = { -- cgit v1.1 From 04aafd713bae8a75933c7821dc012b0ec9046bca Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 1 Dec 2011 14:49:29 +0800 Subject: arm/imx: fix irq_base for gpio When gpio core dynamically allocate gpio number for a port, it starts from the end of the total range, 0 ~ ARCH_NR_GPIOS. That said, the earlier a port gets probed, the bigger gpio number it gets assigned. To match this, the irq_base for gpio should be assigned from 'MXC_GPIO_IRQ_START + ARCH_NR_GPIOS' decreasingly. Signed-off-by: Shawn Guo --- arch/arm/mach-mx5/imx53-dt.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-mx5/imx53-dt.c') diff --git a/arch/arm/mach-mx5/imx53-dt.c b/arch/arm/mach-mx5/imx53-dt.c index 022bc03..85bfd5f 100644 --- a/arch/arm/mach-mx5/imx53-dt.c +++ b/arch/arm/mach-mx5/imx53-dt.c @@ -58,11 +58,10 @@ static int __init imx53_tzic_add_irq_domain(struct device_node *np, static int __init imx53_gpio_add_irq_domain(struct device_node *np, struct device_node *interrupt_parent) { - static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS - - 32 * 7; /* imx53 gets 7 gpio ports */ + static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS; + gpio_irq_base -= 32; irq_domain_add_simple(np, gpio_irq_base); - gpio_irq_base += 32; return 0; } -- cgit v1.1