diff options
| author | sedji gaouaou <sedji.gaouaou@atmel.com> | 2008-07-10 10:15:35 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-07-10 12:13:47 +0100 |
| commit | 613526677a74c2b3d1b1696ea7334b2cf35155b3 (patch) | |
| tree | 785ec10351bceedc278bba66a54c212f8e3d5f54 /arch/arm/mach-at91/at91sam9260_devices.c | |
| parent | 16074b669ea97e2bef494ec7cceb475566f763e3 (diff) | |
| download | talos-obmc-linux-613526677a74c2b3d1b1696ea7334b2cf35155b3.tar.gz talos-obmc-linux-613526677a74c2b3d1b1696ea7334b2cf35155b3.zip | |
[ARM] 5130/4: Support for the at91sam9g20
Support for the at91sam9g20 : Atmel 400Mhz ARM 926ej-s SOC.
AT91sam9g20 is an evolution of the at91sam9260 with a faster clock
speed.
We created a new board for this device but based the chip support
directly on 9260 files with little updates.
Here is the chip page on Atmel wabsite:
http://atmel.com/dyn/products/product_card.asp?part_id=4337
Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: Justin Waters <justin.waters@timesys.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-at91/at91sam9260_devices.c')
| -rw-r--r-- | arch/arm/mach-at91/at91sam9260_devices.c | 44 |
1 files changed, 33 insertions, 11 deletions
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index 26f5cacbec35..86cba4ac29b1 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -18,6 +18,7 @@ #include <asm/arch/board.h> #include <asm/arch/gpio.h> +#include <asm/arch/cpu.h> #include <asm/arch/at91sam9260.h> #include <asm/arch/at91sam9260_matrix.h> #include <asm/arch/at91sam9_smc.h> @@ -320,20 +321,41 @@ void __init at91_add_device_nand(struct at91_nand_data *data) csa = at91_sys_read(AT91_MATRIX_EBICSA); at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA); - /* set the bus interface characteristics */ - at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) - | AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0)); + if (cpu_is_at91sam9260()) { + /* Timing for sam9260 */ + /* set the bus interface characteristics */ + at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) + | AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0)); - at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) - | AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3)); + at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) + | AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3)); - at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5)); + at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5)); - if (data->bus_width_16) - mode = AT91_SMC_DBW_16; - else - mode = AT91_SMC_DBW_8; - at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2)); + if (data->bus_width_16) + mode = AT91_SMC_DBW_16; + else + mode = AT91_SMC_DBW_8; + at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2)); + } + + if (cpu_is_at91sam9g20()) { + /* Timing for sam9g20 */ + /* set the bus interface characteristics */ + at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) + | AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0)); + + at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(4) + | AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(4)); + + at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7)); + + if (data->bus_width_16) + mode = AT91_SMC_DBW_16; + else + mode = AT91_SMC_DBW_8; + at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(3)); + } /* enable pin */ if (data->enable_pin) |
