diff options
Diffstat (limited to 'arch/arm/mach-nomadik/cpu-8815.c')
| -rw-r--r-- | arch/arm/mach-nomadik/cpu-8815.c | 178 |
1 files changed, 4 insertions, 174 deletions
diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c index 13e0df9c11ce..0eed60917dcf 100644 --- a/arch/arm/mach-nomadik/cpu-8815.c +++ b/arch/arm/mach-nomadik/cpu-8815.c @@ -1,48 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright STMicroelectronics, 2007. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/types.h> #include <linux/init.h> -#include <linux/device.h> -#include <linux/amba/bus.h> -#include <linux/platform_device.h> #include <linux/io.h> -#include <linux/slab.h> -#include <linux/irq.h> -#include <linux/dma-mapping.h> -#include <linux/platform_data/clk-nomadik.h> -#include <linux/clocksource.h> -#include <linux/of_irq.h> -#include <linux/of_gpio.h> -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <linux/mtd/fsmc.h> -#include <linux/gpio.h> -#include <linux/amba/mmci.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> -#include <asm/mach/time.h> #include <asm/mach-types.h> -#include <asm/cacheflush.h> -#include <asm/hardware/cache-l2x0.h> - /* * These are the only hard-coded address offsets we still have to use. */ @@ -113,154 +81,16 @@ static void cpu8815_restart(enum reboot_mode mode, const char *cmd) writel(1, srcbase + 0x18); } -/* Initial value for SRC control register: all timers use MXTAL/8 source */ -#define SRC_CR_INIT_MASK 0x00007fff -#define SRC_CR_INIT_VAL 0x2aaa8000 - -static void __init cpu8815_timer_init_of(void) -{ - struct device_node *mtu; - void __iomem *base; - int irq; - u32 src_cr; - - /* We need this to be up now */ - nomadik_clk_init(); - - mtu = of_find_node_by_path("/mtu@101e2000"); - if (!mtu) - return; - base = of_iomap(mtu, 0); - if (WARN_ON(!base)) - return; - irq = irq_of_parse_and_map(mtu, 0); - - pr_info("Remapped MTU @ %p, irq: %d\n", base, irq); - - /* Configure timer sources in "system reset controller" ctrl reg */ - src_cr = readl(base); - src_cr &= SRC_CR_INIT_MASK; - src_cr |= SRC_CR_INIT_VAL; - writel(src_cr, base); - - clocksource_of_init(); -} - -static struct fsmc_nand_timings cpu8815_nand_timings = { - .thiz = 0, - .thold = 0x10, - .twait = 0x0A, - .tset = 0, -}; - -static struct fsmc_nand_platform_data cpu8815_nand_data = { - .nand_timings = &cpu8815_nand_timings, -}; - -/* - * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects - * to simply request an IRQ passed as a resource. So the GPIO pin needs - * to be requested by this hog and set as input. - */ -static int __init cpu8815_eth_init(void) -{ - struct device_node *eth; - int gpio, irq, err; - - eth = of_find_node_by_path("/usb-s8815/ethernet-gpio"); - if (!eth) { - pr_info("could not find any ethernet GPIO\n"); - return 0; - } - gpio = of_get_gpio(eth, 0); - err = gpio_request(gpio, "eth_irq"); - if (err) { - pr_info("failed to request ethernet GPIO\n"); - return -ENODEV; - } - err = gpio_direction_input(gpio); - if (err) { - pr_info("failed to set ethernet GPIO as input\n"); - return -ENODEV; - } - irq = gpio_to_irq(gpio); - pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq); - return 0; -} -device_initcall(cpu8815_eth_init); - -/* - * TODO: - * cannot be set from device tree, convert to a proper DT - * binding. - */ -static struct mmci_platform_data mmcsd_plat_data = { - .ocr_mask = MMC_VDD_29_30, -}; - -/* - * This GPIO pin turns on a line that is used to detect card insertion - * on this board. - */ -static int __init cpu8815_mmcsd_init(void) -{ - struct device_node *cdbias; - int gpio, err; - - cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio"); - if (!cdbias) { - pr_info("could not find MMC/SD card detect bias node\n"); - return 0; - } - gpio = of_get_gpio(cdbias, 0); - if (gpio < 0) { - pr_info("could not obtain MMC/SD card detect bias GPIO\n"); - return 0; - } - err = gpio_request(gpio, "card detect bias"); - if (err) { - pr_info("failed to request card detect bias GPIO %d\n", gpio); - return -ENODEV; - } - err = gpio_direction_output(gpio, 0); - if (err){ - pr_info("failed to set GPIO %d as output, low\n", gpio); - return err; - } - pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio); - return 0; -} -device_initcall(cpu8815_mmcsd_init); - - -/* These are mostly to get the right device names for the clock lookups */ -static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE, - NULL, &cpu8815_nand_data), - OF_DEV_AUXDATA("arm,primecell", NOMADIK_SDI_BASE, - NULL, &mmcsd_plat_data), - { /* sentinel */ }, -}; - -static void __init cpu8815_init_of(void) -{ -#ifdef CONFIG_CACHE_L2X0 - /* At full speed latency must be >=2, so 0x249 in low bits */ - l2x0_of_init(0x00730249, 0xfe000fff); -#endif - of_platform_populate(NULL, of_default_bus_match_table, - cpu8815_auxdata_lookup, NULL); -} - static const char * cpu8815_board_compat[] = { + "st,nomadik-nhk-15", "calaosystems,usb-s8815", NULL, }; DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") + .l2c_aux_val = 0, + .l2c_aux_mask = ~0, .map_io = cpu8815_map_io, - .init_time = cpu8815_timer_init_of, - .init_machine = cpu8815_init_of, .restart = cpu8815_restart, .dt_compat = cpu8815_board_compat, MACHINE_END |