mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 03:20:55 +07:00
4a31bd28e8
Remove more custom stuff by simply converting the Nomadik machine to use generic clocks and move the driver to drivers/clk. Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Mike Turquette <mturquette@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
|
|
* 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 <plat/gpio-nomadik.h>
|
|
#include <mach/hardware.h>
|
|
#include <mach/irqs.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/hardware/vic.h>
|
|
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
|
|
#include "cpu-8815.h"
|
|
|
|
/* The 8815 has 4 GPIO blocks, let's register them immediately */
|
|
static resource_size_t __initdata cpu8815_gpio_base[] = {
|
|
NOMADIK_GPIO0_BASE,
|
|
NOMADIK_GPIO1_BASE,
|
|
NOMADIK_GPIO2_BASE,
|
|
NOMADIK_GPIO3_BASE,
|
|
};
|
|
|
|
static struct platform_device *
|
|
cpu8815_add_gpio(int id, resource_size_t addr, int irq,
|
|
struct nmk_gpio_platform_data *pdata)
|
|
{
|
|
struct resource resources[] = {
|
|
{
|
|
.start = addr,
|
|
.end = addr + 127,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = irq,
|
|
.end = irq,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
return platform_device_register_resndata(NULL, "gpio", id,
|
|
resources, ARRAY_SIZE(resources),
|
|
pdata, sizeof(*pdata));
|
|
}
|
|
|
|
void cpu8815_add_gpios(resource_size_t *base, int num, int irq,
|
|
struct nmk_gpio_platform_data *pdata)
|
|
{
|
|
int first = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < num; i++, first += 32, irq++) {
|
|
pdata->first_gpio = first;
|
|
pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first);
|
|
pdata->num_gpio = 32;
|
|
|
|
cpu8815_add_gpio(i, base[i], irq, pdata);
|
|
}
|
|
}
|
|
|
|
static int __init cpu8815_init(void)
|
|
{
|
|
struct nmk_gpio_platform_data pdata = {
|
|
/* No custom data yet */
|
|
};
|
|
|
|
cpu8815_add_gpios(cpu8815_gpio_base, ARRAY_SIZE(cpu8815_gpio_base),
|
|
IRQ_GPIO0, &pdata);
|
|
amba_apb_device_add(NULL, "rng", NOMADIK_RNG_BASE, SZ_4K, 0, 0, NULL, 0);
|
|
amba_apb_device_add(NULL, "rtc-pl031", NOMADIK_RTC_BASE, SZ_4K, IRQ_RTC_RTT, 0, NULL, 0);
|
|
return 0;
|
|
}
|
|
arch_initcall(cpu8815_init);
|
|
|
|
/* All SoC devices live in the same area (see hardware.h) */
|
|
static struct map_desc nomadik_io_desc[] __initdata = {
|
|
{
|
|
.virtual = NOMADIK_IO_VIRTUAL,
|
|
.pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
|
|
.length = NOMADIK_IO_SIZE,
|
|
.type = MT_DEVICE,
|
|
}
|
|
/* static ram and secured ram may be added later */
|
|
};
|
|
|
|
void __init cpu8815_map_io(void)
|
|
{
|
|
iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
|
|
}
|
|
|
|
void __init cpu8815_init_irq(void)
|
|
{
|
|
/* This modified VIC cell has two register blocks, at 0 and 0x20 */
|
|
vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
|
|
vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
|
|
|
|
/*
|
|
* Init clocks here so that they are available for system timer
|
|
* initialization.
|
|
*/
|
|
nomadik_clk_init();
|
|
}
|
|
|
|
/*
|
|
* This function is called from the board init ("init_machine").
|
|
*/
|
|
void __init cpu8815_platform_init(void)
|
|
{
|
|
#ifdef CONFIG_CACHE_L2X0
|
|
/* At full speed latency must be >=2, so 0x249 in low bits */
|
|
l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
void cpu8815_restart(char mode, const char *cmd)
|
|
{
|
|
void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
|
|
|
|
/* FIXME: use egpio when implemented */
|
|
|
|
/* Write anything to Reset status register */
|
|
writel(1, src_rstsr);
|
|
}
|