mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 16:24:13 +08:00
f5e12de36a
[ Upstream commit0fdebc5ec2] Based on the normalized pattern: this file is licensed under the terms of the gnu general public license version 2 this program is licensed as is without any warranty of any kind whether express or implied extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference. Reviewed-by: Allison Randal <allison@lohutok.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Stable-dep-of:6469b2fead("ARM: dts: ti: omap: Fix bandgap thermal cells addressing for omap3/4") Signed-off-by: Sasha Levin <sashal@kernel.org>
127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* arch/arm/mach-spear13xx/spear13xx.c
|
|
*
|
|
* SPEAr13XX machines common source file
|
|
*
|
|
* Copyright (C) 2012 ST Microelectronics
|
|
* Viresh Kumar <vireshk@kernel.org>
|
|
*/
|
|
|
|
#define pr_fmt(fmt) "SPEAr13xx: " fmt
|
|
|
|
#include <linux/amba/pl022.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/clk/spear.h>
|
|
#include <linux/clocksource.h>
|
|
#include <linux/err.h>
|
|
#include <linux/of.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
#include <asm/mach/map.h>
|
|
#include <mach/spear.h>
|
|
#include "generic.h"
|
|
|
|
void __init spear13xx_l2x0_init(void)
|
|
{
|
|
/*
|
|
* 512KB (64KB/way), 8-way associativity, parity supported
|
|
*
|
|
* FIXME: 9th bit, of Auxillary Controller register must be set
|
|
* for some spear13xx devices for stable L2 operation.
|
|
*
|
|
* Enable Early BRESP, L2 prefetch for Instruction and Data,
|
|
* write alloc and 'Full line of zero' options
|
|
*
|
|
*/
|
|
if (!IS_ENABLED(CONFIG_CACHE_L2X0))
|
|
return;
|
|
|
|
writel_relaxed(0x06, VA_L2CC_BASE + L310_PREFETCH_CTRL);
|
|
|
|
/*
|
|
* Program following latencies in order to make
|
|
* SPEAr1340 work at 600 MHz
|
|
*/
|
|
writel_relaxed(0x221, VA_L2CC_BASE + L310_TAG_LATENCY_CTRL);
|
|
writel_relaxed(0x441, VA_L2CC_BASE + L310_DATA_LATENCY_CTRL);
|
|
l2x0_init(VA_L2CC_BASE, 0x30a00001, 0xfe0fffff);
|
|
}
|
|
|
|
/*
|
|
* Following will create 16MB static virtual/physical mappings
|
|
* PHYSICAL VIRTUAL
|
|
* 0xB3000000 0xF9000000
|
|
* 0xE0000000 0xFD000000
|
|
* 0xEC000000 0xFC000000
|
|
* 0xED000000 0xFB000000
|
|
*/
|
|
static struct map_desc spear13xx_io_desc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)VA_PERIP_GRP2_BASE,
|
|
.pfn = __phys_to_pfn(PERIP_GRP2_BASE),
|
|
.length = SZ_16M,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = (unsigned long)VA_PERIP_GRP1_BASE,
|
|
.pfn = __phys_to_pfn(PERIP_GRP1_BASE),
|
|
.length = SZ_16M,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = (unsigned long)VA_A9SM_AND_MPMC_BASE,
|
|
.pfn = __phys_to_pfn(A9SM_AND_MPMC_BASE),
|
|
.length = SZ_16M,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = (unsigned long)VA_L2CC_BASE,
|
|
.pfn = __phys_to_pfn(L2CC_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
},
|
|
};
|
|
|
|
/* This will create static memory mapping for selected devices */
|
|
void __init spear13xx_map_io(void)
|
|
{
|
|
iotable_init(spear13xx_io_desc, ARRAY_SIZE(spear13xx_io_desc));
|
|
}
|
|
|
|
static void __init spear13xx_clk_init(void)
|
|
{
|
|
if (of_machine_is_compatible("st,spear1310"))
|
|
spear1310_clk_init(VA_MISC_BASE, VA_SPEAR1310_RAS_BASE);
|
|
else if (of_machine_is_compatible("st,spear1340"))
|
|
spear1340_clk_init(VA_MISC_BASE);
|
|
else
|
|
pr_err("%s: Unknown machine\n", __func__);
|
|
}
|
|
|
|
void __init spear13xx_timer_init(void)
|
|
{
|
|
char pclk_name[] = "osc_24m_clk";
|
|
struct clk *gpt_clk, *pclk;
|
|
|
|
spear13xx_clk_init();
|
|
|
|
/* get the system timer clock */
|
|
gpt_clk = clk_get_sys("gpt0", NULL);
|
|
if (IS_ERR(gpt_clk)) {
|
|
pr_err("%s:couldn't get clk for gpt\n", __func__);
|
|
BUG();
|
|
}
|
|
|
|
/* get the suitable parent clock for timer*/
|
|
pclk = clk_get(NULL, pclk_name);
|
|
if (IS_ERR(pclk)) {
|
|
pr_err("%s:couldn't get %s as parent for gpt\n", __func__,
|
|
pclk_name);
|
|
BUG();
|
|
}
|
|
|
|
clk_set_parent(gpt_clk, pclk);
|
|
clk_put(gpt_clk);
|
|
clk_put(pclk);
|
|
|
|
spear_setup_of_timer();
|
|
timer_probe();
|
|
}
|