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6a53bc7500
The SI unit of frequency is Hertz, named after Heinrich Hertz, and is given the symbol "Hz" to denote this. "hz" is not the unit of frequency, and is in fact meaningless. Fix arch/arm to correctly use "Hz", thereby acknowledging Heinrich Hertz' contribution to the modern world. Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/*
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* arch/arm/mach-ixp4xx/include/mach/platform.h
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*
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* Constants and functions that are useful to IXP4xx platform-specific code
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* and device drivers.
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*
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* Copyright (C) 2004 MontaVista Software, Inc.
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*/
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#ifndef __ASM_ARCH_HARDWARE_H__
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#error "Do not include this directly, instead #include <mach/hardware.h>"
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#endif
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#ifndef __ASSEMBLY__
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#include <linux/reboot.h>
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#include <asm/types.h>
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#ifndef __ARMEB__
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#define REG_OFFSET 0
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#else
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#define REG_OFFSET 3
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#endif
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/*
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* Expansion bus memory regions
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*/
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#define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000)
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/*
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* The expansion bus on the IXP4xx can be configured for either 16 or
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* 32MB windows and the CS offset for each region changes based on the
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* current configuration. This means that we cannot simply hardcode
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* each offset. ixp4xx_sys_init() looks at the expansion bus configuration
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* as setup by the bootloader to determine our window size.
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*/
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extern unsigned long ixp4xx_exp_bus_size;
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#define IXP4XX_EXP_BUS_BASE(region)\
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(IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size))
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#define IXP4XX_EXP_BUS_END(region)\
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(IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1)
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/* Those macros can be used to adjust timing and configure
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* other features for each region.
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*/
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#define IXP4XX_EXP_BUS_RECOVERY_T(x) (((x) & 0x0f) << 16)
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#define IXP4XX_EXP_BUS_HOLD_T(x) (((x) & 0x03) << 20)
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#define IXP4XX_EXP_BUS_STROBE_T(x) (((x) & 0x0f) << 22)
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#define IXP4XX_EXP_BUS_SETUP_T(x) (((x) & 0x03) << 26)
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#define IXP4XX_EXP_BUS_ADDR_T(x) (((x) & 0x03) << 28)
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#define IXP4XX_EXP_BUS_SIZE(x) (((x) & 0x0f) << 10)
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#define IXP4XX_EXP_BUS_CYCLES(x) (((x) & 0x03) << 14)
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#define IXP4XX_EXP_BUS_CS_EN (1L << 31)
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#define IXP4XX_EXP_BUS_BYTE_RD16 (1L << 6)
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#define IXP4XX_EXP_BUS_HRDY_POL (1L << 5)
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#define IXP4XX_EXP_BUS_MUX_EN (1L << 4)
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#define IXP4XX_EXP_BUS_SPLT_EN (1L << 3)
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#define IXP4XX_EXP_BUS_WR_EN (1L << 1)
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#define IXP4XX_EXP_BUS_BYTE_EN (1L << 0)
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#define IXP4XX_EXP_BUS_CYCLES_INTEL 0x00
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#define IXP4XX_EXP_BUS_CYCLES_MOTOROLA 0x01
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#define IXP4XX_EXP_BUS_CYCLES_HPI 0x02
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#define IXP4XX_FLASH_WRITABLE (0x2)
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#define IXP4XX_FLASH_DEFAULT (0xbcd23c40)
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#define IXP4XX_FLASH_WRITE (0xbcd23c42)
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/*
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* Clock Speed Definitions.
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*/
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#define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66MHzi APB BUS */
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#define IXP4XX_UART_XTAL 14745600
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/*
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* This structure provide a means for the board setup code
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* to give information to th pata_ixp4xx driver. It is
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* passed as platform_data.
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*/
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struct ixp4xx_pata_data {
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volatile u32 *cs0_cfg;
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volatile u32 *cs1_cfg;
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unsigned long cs0_bits;
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unsigned long cs1_bits;
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void __iomem *cs0;
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void __iomem *cs1;
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};
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#define IXP4XX_ETH_NPEA 0x00
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#define IXP4XX_ETH_NPEB 0x10
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#define IXP4XX_ETH_NPEC 0x20
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/* Information about built-in Ethernet MAC interfaces */
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struct eth_plat_info {
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u8 phy; /* MII PHY ID, 0 - 31 */
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u8 rxq; /* configurable, currently 0 - 31 only */
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u8 txreadyq;
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u8 hwaddr[6];
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};
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/* Information about built-in HSS (synchronous serial) interfaces */
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struct hss_plat_info {
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int (*set_clock)(int port, unsigned int clock_type);
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int (*open)(int port, void *pdev,
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void (*set_carrier_cb)(void *pdev, int carrier));
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void (*close)(int port, void *pdev);
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u8 txreadyq;
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};
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/*
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* Frequency of clock used for primary clocksource
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*/
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extern unsigned long ixp4xx_timer_freq;
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/*
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* Functions used by platform-level setup code
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*/
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extern void ixp4xx_map_io(void);
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extern void ixp4xx_init_early(void);
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extern void ixp4xx_init_irq(void);
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extern void ixp4xx_sys_init(void);
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extern void ixp4xx_timer_init(void);
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extern void ixp4xx_restart(enum reboot_mode, const char *);
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extern void ixp4xx_pci_preinit(void);
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struct pci_sys_data;
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extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
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extern struct pci_ops ixp4xx_ops;
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#endif // __ASSEMBLY__
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