2009-07-02 19:06:47 +01:00
/*
* 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>
2009-07-02 15:29:12 +01:00
# include <linux/amba/bus.h>
2010-03-03 04:52:34 +01:00
# include <linux/platform_device.h>
2011-11-28 10:48:02 +00:00
# include <linux/io.h>
2012-01-09 12:40:02 +01:00
# include <linux/slab.h>
# include <linux/irq.h>
# include <linux/dma-mapping.h>
2013-01-05 00:29:31 +01:00
# include <linux/of_irq.h>
2013-01-06 01:02:42 +01:00
# include <linux/of_gpio.h>
2013-01-05 00:29:31 +01:00
# include <linux/of_address.h>
# include <linux/of_platform.h>
2013-01-06 01:02:42 +01:00
# include <linux/gpio.h>
2009-07-02 19:06:47 +01:00
2013-01-05 00:29:31 +01:00
# include <asm/mach/arch.h>
2009-07-02 19:06:47 +01:00
# include <asm/mach/map.h>
2013-01-05 00:29:31 +01:00
# include <asm/mach/time.h>
2013-01-05 10:38:57 +01:00
# include <asm/mach-types.h>
2009-07-02 19:06:47 +01:00
2009-07-02 15:29:43 +01:00
# include <asm/cacheflush.h>
# include <asm/hardware/cache-l2x0.h>
2013-01-06 02:58:43 +01:00
/*
* These are the only hard - coded address offsets we still have to use .
*/
# define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */
# define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */
# define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */
# define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */
# define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */
# define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */
# define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */
# define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */
# define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */
# define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */
# define NOMADIK_XTI_BASE 0x101A0000 /* XTI */
# define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */
# define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */
# define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */
# define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */
# define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */
# define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */
# define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */
# define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */
# define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */
# define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */
# define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */
# define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */
# define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */
# define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */
# define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */
# define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */
# define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */
# define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */
# define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */
# define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */
# define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */
# define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */
# define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */
# define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */
# define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */
# define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */
# define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */
# define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */
# define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */
# define NOMADIK_UART1_VBASE 0xF01FB000
/* This is needed for LL-debug/earlyprintk/debug-macro.S */
static struct map_desc cpu8815_io_desc [ ] __initdata = {
2009-07-02 19:06:47 +01:00
{
2013-01-06 02:58:43 +01:00
. virtual = NOMADIK_UART1_VBASE ,
. pfn = __phys_to_pfn ( NOMADIK_UART1_BASE ) ,
. length = SZ_4K ,
. type = MT_DEVICE ,
} ,
2009-07-02 19:06:47 +01:00
} ;
2013-01-06 02:25:20 +01:00
static void __init cpu8815_map_io ( void )
2009-07-02 19:06:47 +01:00
{
2013-01-06 02:58:43 +01:00
iotable_init ( cpu8815_io_desc , ARRAY_SIZE ( cpu8815_io_desc ) ) ;
2009-07-02 19:06:47 +01:00
}
2013-07-08 16:01:40 -07:00
static void cpu8815_restart ( enum reboot_mode mode , const char * cmd )
2011-11-28 10:48:02 +00:00
{
2013-01-06 02:58:43 +01:00
void __iomem * srcbase = ioremap ( NOMADIK_SRC_BASE , SZ_4K ) ;
2011-11-28 10:48:02 +00:00
/* FIXME: use egpio when implemented */
/* Write anything to Reset status register */
2013-01-06 02:58:43 +01:00
writel ( 1 , srcbase + 0x18 ) ;
2011-11-28 10:48:02 +00:00
}
2013-01-05 00:29:31 +01:00
2013-01-06 01:47:29 +01:00
/*
* This GPIO pin turns on a line that is used to detect card insertion
* on this board .
*/
static int __init cpu8815_mmcsd_init ( void )
{
struct device_node * cdbias ;
int gpio , err ;
cdbias = of_find_node_by_path ( " /usb-s8815/mmcsd-gpio " ) ;
if ( ! cdbias ) {
pr_info ( " could not find MMC/SD card detect bias node \n " ) ;
return 0 ;
}
gpio = of_get_gpio ( cdbias , 0 ) ;
if ( gpio < 0 ) {
pr_info ( " could not obtain MMC/SD card detect bias GPIO \n " ) ;
return 0 ;
}
err = gpio_request ( gpio , " card detect bias " ) ;
if ( err ) {
pr_info ( " failed to request card detect bias GPIO %d \n " , gpio ) ;
return - ENODEV ;
}
err = gpio_direction_output ( gpio , 0 ) ;
if ( err ) {
pr_info ( " failed to set GPIO %d as output, low \n " , gpio ) ;
return err ;
}
pr_info ( " enabled USB-S8815 CD bias GPIO %d, low \n " , gpio ) ;
return 0 ;
}
device_initcall ( cpu8815_mmcsd_init ) ;
2013-01-05 00:29:31 +01:00
static const char * cpu8815_board_compat [ ] = {
2014-10-09 22:10:35 +02:00
" st,nomadik-nhk-15 " ,
2013-01-05 00:29:31 +01:00
" calaosystems,usb-s8815 " ,
NULL ,
} ;
DT_MACHINE_START ( NOMADIK_DT , " Nomadik STn8815 " )
2014-04-28 15:27:59 +01:00
/* At full speed latency must be >=2, so 0x249 in low bits */
. l2c_aux_val = 0x00700249 ,
. l2c_aux_mask = 0xfe0fefff ,
2013-01-05 00:29:31 +01:00
. map_io = cpu8815_map_io ,
. restart = cpu8815_restart ,
. dt_compat = cpu8815_board_compat ,
MACHINE_END