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linux/arch/arm/mach-orion5x/common.c
Linus Torvalds 2795343705 Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc 
Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...
2012-05-26 12:42:29 -07:00

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/*
* arch/arm/mach-orion5x/common.c
*
* Core functions for Marvell Orion 5x SoCs
*
* Maintainer: Tzachi Perelstein <tzachi@marvell.com>
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/serial_8250.h>
#include <linux/mv643xx_i2c.h>
#include <linux/ata_platform.h>
#include <linux/delay.h>
#include <linux/clk-provider.h>
#include <net/dsa.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <asm/system_misc.h>
#include <asm/timex.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <mach/bridge-regs.h>
#include <mach/hardware.h>
#include <mach/orion5x.h>
#include <plat/orion_nand.h>
#include <plat/ehci-orion.h>
#include <plat/time.h>
#include <plat/common.h>
#include <plat/addr-map.h>
#include "common.h"
/*****************************************************************************
* I/O Address Mapping
****************************************************************************/
static struct map_desc orion5x_io_desc[] __initdata = {
{
.virtual = ORION5X_REGS_VIRT_BASE,
.pfn = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
.length = ORION5X_REGS_SIZE,
.type = MT_DEVICE,
}, {
.virtual = ORION5X_PCIE_IO_VIRT_BASE,
.pfn = __phys_to_pfn(ORION5X_PCIE_IO_PHYS_BASE),
.length = ORION5X_PCIE_IO_SIZE,
.type = MT_DEVICE,
}, {
.virtual = ORION5X_PCI_IO_VIRT_BASE,
.pfn = __phys_to_pfn(ORION5X_PCI_IO_PHYS_BASE),
.length = ORION5X_PCI_IO_SIZE,
.type = MT_DEVICE,
}, {
.virtual = ORION5X_PCIE_WA_VIRT_BASE,
.pfn = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
.length = ORION5X_PCIE_WA_SIZE,
.type = MT_DEVICE,
},
};
void __init orion5x_map_io(void)
{
iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
}
/*****************************************************************************
* CLK tree
****************************************************************************/
static struct clk *tclk;
static void __init clk_init(void)
{
tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
orion5x_tclk);
orion_clkdev_init(tclk);
}
/*****************************************************************************
* EHCI0
****************************************************************************/
void __init orion5x_ehci0_init(void)
{
orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
EHCI_PHY_ORION);
}
/*****************************************************************************
* EHCI1
****************************************************************************/
void __init orion5x_ehci1_init(void)
{
orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
}
/*****************************************************************************
* GE00
****************************************************************************/
void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
{
orion_ge00_init(eth_data,
ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
IRQ_ORION5X_ETH_ERR);
}
/*****************************************************************************
* Ethernet switch
****************************************************************************/
void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
{
orion_ge00_switch_init(d, irq);
}
/*****************************************************************************
* I2C
****************************************************************************/
void __init orion5x_i2c_init(void)
{
orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
}
/*****************************************************************************
* SATA
****************************************************************************/
void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
{
orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
}
/*****************************************************************************
* SPI
****************************************************************************/
void __init orion5x_spi_init()
{
orion_spi_init(SPI_PHYS_BASE);
}
/*****************************************************************************
* UART0
****************************************************************************/
void __init orion5x_uart0_init(void)
{
orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
IRQ_ORION5X_UART0, tclk);
}
/*****************************************************************************
* UART1
****************************************************************************/
void __init orion5x_uart1_init(void)
{
orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
IRQ_ORION5X_UART1, tclk);
}
/*****************************************************************************
* XOR engine
****************************************************************************/
void __init orion5x_xor_init(void)
{
orion_xor0_init(ORION5X_XOR_PHYS_BASE,
ORION5X_XOR_PHYS_BASE + 0x200,
IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
}
/*****************************************************************************
* Cryptographic Engines and Security Accelerator (CESA)
****************************************************************************/
static void __init orion5x_crypto_init(void)
{
orion5x_setup_sram_win();
orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
SZ_8K, IRQ_ORION5X_CESA);
}
/*****************************************************************************
* Watchdog
****************************************************************************/
void __init orion5x_wdt_init(void)
{
orion_wdt_init();
}
/*****************************************************************************
* Time handling
****************************************************************************/
void __init orion5x_init_early(void)
{
orion_time_set_base(TIMER_VIRT_BASE);
}
int orion5x_tclk;
int __init orion5x_find_tclk(void)
{
u32 dev, rev;
orion5x_pcie_id(&dev, &rev);
if (dev == MV88F6183_DEV_ID &&
(readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
return 133333333;
return 166666667;
}
static void __init orion5x_timer_init(void)
{
orion5x_tclk = orion5x_find_tclk();
orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
IRQ_ORION5X_BRIDGE, orion5x_tclk);
}
struct sys_timer orion5x_timer = {
.init = orion5x_timer_init,
};
/*****************************************************************************
* General
****************************************************************************/
/*
* Identify device ID and rev from PCIe configuration header space '0'.
*/
static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
{
orion5x_pcie_id(dev, rev);
if (*dev == MV88F5281_DEV_ID) {
if (*rev == MV88F5281_REV_D2) {
*dev_name = "MV88F5281-D2";
} else if (*rev == MV88F5281_REV_D1) {
*dev_name = "MV88F5281-D1";
} else if (*rev == MV88F5281_REV_D0) {
*dev_name = "MV88F5281-D0";
} else {
*dev_name = "MV88F5281-Rev-Unsupported";
}
} else if (*dev == MV88F5182_DEV_ID) {
if (*rev == MV88F5182_REV_A2) {
*dev_name = "MV88F5182-A2";
} else {
*dev_name = "MV88F5182-Rev-Unsupported";
}
} else if (*dev == MV88F5181_DEV_ID) {
if (*rev == MV88F5181_REV_B1) {
*dev_name = "MV88F5181-Rev-B1";
} else if (*rev == MV88F5181L_REV_A1) {
*dev_name = "MV88F5181L-Rev-A1";
} else {
*dev_name = "MV88F5181(L)-Rev-Unsupported";
}
} else if (*dev == MV88F6183_DEV_ID) {
if (*rev == MV88F6183_REV_B0) {
*dev_name = "MV88F6183-Rev-B0";
} else {
*dev_name = "MV88F6183-Rev-Unsupported";
}
} else {
*dev_name = "Device-Unknown";
}
}
void __init orion5x_init(void)
{
char *dev_name;
u32 dev, rev;
orion5x_id(&dev, &rev, &dev_name);
printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
/*
* Setup Orion address map
*/
orion5x_setup_cpu_mbus_bridge();
/* Setup root of clk tree */
clk_init();
/*
* Don't issue "Wait for Interrupt" instruction if we are
* running on D0 5281 silicon.
*/
if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
disable_hlt();
}
/*
* The 5082/5181l/5182/6082/6082l/6183 have crypto
* while 5180n/5181/5281 don't have crypto.
*/
if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
orion5x_crypto_init();
/*
* Register watchdog driver
*/
orion5x_wdt_init();
}
void orion5x_restart(char mode, const char *cmd)
{
/*
* Enable and issue soft reset
*/
orion5x_setbits(RSTOUTn_MASK, (1 << 2));
orion5x_setbits(CPU_SOFT_RESET, 1);
mdelay(200);
orion5x_clrbits(CPU_SOFT_RESET, 1);
}
/*
* Many orion-based systems have buggy bootloader implementations.
* This is a common fixup for bogus memory tags.
*/
void __init tag_fixup_mem32(struct tag *t, char **from,
struct meminfo *meminfo)
{
for (; t->hdr.size; t = tag_next(t))
if (t->hdr.tag == ATAG_MEM &&
(!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
t->u.mem.start & ~PAGE_MASK)) {
printk(KERN_WARNING
"Clearing invalid memory bank %dKB@0x%08x\n",
t->u.mem.size / 1024, t->u.mem.start);
t->hdr.tag = 0;
}
}
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