mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-28 13:22:57 +00:00
12c3dca25d
The MaverickCrunch support for ep93xx never made it into glibc and was removed from gcc in its 4.8 release in 2012. It is now one of the last parts of arch/arm/ that fails to build with the clang integrated assembler, which is unlikely to ever want to support it. The two alternatives are to force the use of binutils/gas when building the crunch support, or to remove it entirely. According to Hartley Sweeten: "Martin Guy did a lot of work trying to get the maverick crunch working but I was never able to successfully use it for anything. It "kind" of works but depending on the EP93xx silicon revision there are still a number of hardware bugs that either give imprecise or garbage results. I have no problem with removing the kernel support for the maverick crunch." Unless someone else comes up with a good reason to keep it around, remove it now. This touches mostly the ep93xx platform, but removes a bit of code from ARM common ptrace and signal frame handling as well. If there are remaining users of MaverickCrunch, they can use LTS kernels for at least another five years before kernel support ends. Link: https://lore.kernel.org/linux-arm-kernel/20210802141245.1146772-1-arnd@kernel.org/ Link: https://lore.kernel.org/linux-arm-kernel/20210226164345.3889993-1-arnd@kernel.org/ Link: https://github.com/ClangBuiltLinux/linux/issues/1272 Link: https://gcc.gnu.org/legacy-ml/gcc/2008-03/msg01063.html Cc: "Martin Guy" <martinwguy@martinwguy@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* arch/arm/mach-ep93xx/simone.c
|
|
* Simplemachines Sim.One support.
|
|
*
|
|
* Copyright (C) 2010 Ryan Mallon
|
|
*
|
|
* Based on the 2.6.24.7 support:
|
|
* Copyright (C) 2009 Simplemachines
|
|
* MMC support by Peter Ivanov <ivanovp@gmail.com>, 2007
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/mmc/host.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/spi/mmc_spi.h>
|
|
#include <linux/platform_data/video-ep93xx.h>
|
|
#include <linux/platform_data/spi-ep93xx.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/gpio/machine.h>
|
|
|
|
#include "hardware.h"
|
|
#include "gpio-ep93xx.h"
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include "soc.h"
|
|
|
|
static struct ep93xx_eth_data __initdata simone_eth_data = {
|
|
.phy_id = 1,
|
|
};
|
|
|
|
static struct ep93xxfb_mach_info __initdata simone_fb_info = {
|
|
.flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
|
|
};
|
|
|
|
static struct mmc_spi_platform_data simone_mmc_spi_data = {
|
|
.detect_delay = 500,
|
|
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
|
|
};
|
|
|
|
static struct gpiod_lookup_table simone_mmc_spi_gpio_table = {
|
|
.dev_id = "mmc_spi.0", /* "mmc_spi" @ CS0 */
|
|
.table = {
|
|
/* Card detect */
|
|
GPIO_LOOKUP_IDX("A", 0, NULL, 0, GPIO_ACTIVE_LOW),
|
|
{ },
|
|
},
|
|
};
|
|
|
|
static struct spi_board_info simone_spi_devices[] __initdata = {
|
|
{
|
|
.modalias = "mmc_spi",
|
|
.platform_data = &simone_mmc_spi_data,
|
|
/*
|
|
* We use 10 MHz even though the maximum is 3.7 MHz. The driver
|
|
* will limit it automatically to max. frequency.
|
|
*/
|
|
.max_speed_hz = 10 * 1000 * 1000,
|
|
.bus_num = 0,
|
|
.chip_select = 0,
|
|
.mode = SPI_MODE_3,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* Up to v1.3, the Sim.One used SFRMOUT as SD card chip select, but this goes
|
|
* low between multi-message command blocks. From v1.4, it uses a GPIO instead.
|
|
* v1.3 parts will still work, since the signal on SFRMOUT is automatic.
|
|
*/
|
|
static struct gpiod_lookup_table simone_spi_cs_gpio_table = {
|
|
.dev_id = "spi0",
|
|
.table = {
|
|
GPIO_LOOKUP("A", 1, "cs", GPIO_ACTIVE_LOW),
|
|
{ },
|
|
},
|
|
};
|
|
|
|
static struct ep93xx_spi_info simone_spi_info __initdata = {
|
|
.use_dma = 1,
|
|
};
|
|
|
|
static struct i2c_board_info __initdata simone_i2c_board_info[] = {
|
|
{
|
|
I2C_BOARD_INFO("ds1337", 0x68),
|
|
},
|
|
};
|
|
|
|
static struct platform_device simone_audio_device = {
|
|
.name = "simone-audio",
|
|
.id = -1,
|
|
};
|
|
|
|
static void __init simone_register_audio(void)
|
|
{
|
|
ep93xx_register_ac97();
|
|
platform_device_register(&simone_audio_device);
|
|
}
|
|
|
|
static void __init simone_init_machine(void)
|
|
{
|
|
ep93xx_init_devices();
|
|
ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_8M);
|
|
ep93xx_register_eth(&simone_eth_data, 1);
|
|
ep93xx_register_fb(&simone_fb_info);
|
|
ep93xx_register_i2c(simone_i2c_board_info,
|
|
ARRAY_SIZE(simone_i2c_board_info));
|
|
gpiod_add_lookup_table(&simone_mmc_spi_gpio_table);
|
|
gpiod_add_lookup_table(&simone_spi_cs_gpio_table);
|
|
ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
|
|
ARRAY_SIZE(simone_spi_devices));
|
|
simone_register_audio();
|
|
}
|
|
|
|
MACHINE_START(SIM_ONE, "Simplemachines Sim.One Board")
|
|
/* Maintainer: Ryan Mallon */
|
|
.atag_offset = 0x100,
|
|
.map_io = ep93xx_map_io,
|
|
.init_irq = ep93xx_init_irq,
|
|
.init_time = ep93xx_timer_init,
|
|
.init_machine = simone_init_machine,
|
|
.restart = ep93xx_restart,
|
|
MACHINE_END
|