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linux/arch/arm/mach-at91/sama5.c

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ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
/*
ARM: at91: change board files into SoC files As board files are now DT only and can address all aspects of the SoC family, we can rename them so that the mach-at91 directory looks cleaner. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 15:41:55 +00:00
* Setup code for SAMA5
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
*
* Copyright (C) 2013 Atmel,
* 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
*
* Licensed under GPLv2 or later.
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
ARM: at91: prepare sama5 dt boards transition to common clk This patch prepare the transition to common clk for sama5 dt boards by replacing the timer init callback. Clocks registration cannot be done in early init callback (as formerly done by the old clk implementation) because it requires dynamic allocation which is not ready yet during early init. In the other hand, at91 clocks must be registered before at91sam926x_pit_init is called because PIT (Periodic Interval Timer) driver request the master clk (mck). A new function (at91sama5_dt_timer_init) is created to fullfil these needs. This function registers all at91 clks using the dt definition before calling the PIT init function. The device tree clock registration is enabled only if common clk is selected. Else the old clk registration is been done during at91_dt_initialize call. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-10-11 12:43:31 +00:00
#include <linux/clk-provider.h>
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
ARM: at91: move alternative initial mapping to board-dt-sama5.c For sama5d4, remove an indirection and the remaining need for at91_boot_soc structure. This will allow further cleanup. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 14:51:34 +00:00
#include <mach/hardware.h>
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include "generic.h"
static void __init sama5_dt_device_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
ARM: at91/trivial: unify functions and machine names Remove the string "(Device Tree)" after the machine name because all AT91 machines use the DT nowadays. Also change some function names to unify following the convention: - at91sam9xxx aren't named sam9, 9xxx but with the full name - sama5 are the ones that don't have the at91 prefix anymore. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 17:41:33 +00:00
at91sam9x5_pm_init();
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
}
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
static const char *sama5_dt_board_compat[] __initconst = {
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
"atmel,sama5",
NULL
};
ARM: at91/trivial: unify functions and machine names Remove the string "(Device Tree)" after the machine name because all AT91 machines use the DT nowadays. Also change some function names to unify following the convention: - at91sam9xxx aren't named sam9, 9xxx but with the full name - sama5 are the ones that don't have the at91 prefix anymore. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 17:41:33 +00:00
DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 13:24:12 +00:00
/* Maintainer: Atmel */
.map_io = at91_map_io,
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_dt_board_compat,
MACHINE_END
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
ARM: at91: move alternative initial mapping to board-dt-sama5.c For sama5d4, remove an indirection and the remaining need for at91_boot_soc structure. This will allow further cleanup. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 14:51:34 +00:00
static struct map_desc at91_io_desc[] __initdata = {
{
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC),
.pfn = __phys_to_pfn(SAMA5D4_BASE_MPDDRC),
.length = SZ_512,
.type = MT_DEVICE,
},
{
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC),
.pfn = __phys_to_pfn(SAMA5D4_BASE_PMC),
.length = SZ_512,
.type = MT_DEVICE,
},
{ /* On sama5d4, we use USART3 as serial console */
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3),
.pfn = __phys_to_pfn(SAMA5D4_BASE_USART3),
.length = SZ_256,
.type = MT_DEVICE,
},
{ /* A bunch of peripheral with fine grained IO space */
.virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2),
.pfn = __phys_to_pfn(SAMA5D4_BASE_SYS2),
.length = SZ_2K,
.type = MT_DEVICE,
},
};
static void __init sama5_alt_map_io(void)
{
at91_alt_map_io();
iotable_init(at91_io_desc, ARRAY_SIZE(at91_io_desc));
}
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
static const char *sama5_alt_dt_board_compat[] __initconst = {
"atmel,sama5d4",
NULL
};
ARM: at91/trivial: unify functions and machine names Remove the string "(Device Tree)" after the machine name because all AT91 machines use the DT nowadays. Also change some function names to unify following the convention: - at91sam9xxx aren't named sam9, 9xxx but with the full name - sama5 are the ones that don't have the at91 prefix anymore. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 17:41:33 +00:00
DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
/* Maintainer: Atmel */
ARM: at91: move alternative initial mapping to board-dt-sama5.c For sama5d4, remove an indirection and the remaining need for at91_boot_soc structure. This will allow further cleanup. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-27 14:51:34 +00:00
.map_io = sama5_alt_map_io,
ARM: at91: SAMA5D4 SoC detection code and low level routines SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-15 16:15:55 +00:00
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_alt_dt_board_compat,
.l2c_aux_mask = ~0UL,
MACHINE_END
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