[ARM] at91: Fix NAND FLASH timings for at91sam9x evaluation kits.

New timings are based on application note
"NAND Flash Support on AT91SAM9 Microcontrollers" available at
http://atmel.com/dyn/resources/prod_documents/doc6255.pdf).

Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index 393a32a..26f5cac 100644 (file)
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -321,8 +321,8 @@ void __init at91_add_device_nand(struct at91_nand_data *data)
        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_(0) | AT91_SMC_NCS_WRSETUP_(0)
-                       | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
+       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));

diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 0babb64..ec18913 100644 (file)
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -232,19 +232,19 @@ void __init at91_add_device_nand(struct at91_nand_data *data)
        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_(0) | AT91_SMC_NCS_WRSETUP_(0)
-                       | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
+       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_(2) | AT91_SMC_NCS_WRPULSE_(5)
-                       | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
+       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_(7) | AT91_SMC_NRDCYCLE_(7));
+       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_(1));
+       at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
 
        /* enable pin */
        if (data->enable_pin)

diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index 719667e..8a81f76 100644 (file)
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -391,8 +391,8 @@ void __init at91_add_device_nand(struct at91_nand_data *data)
        at91_sys_write(AT91_MATRIX_EBI0CSA, csa | AT91_MATRIX_EBI0_CS3A_SMC_SMARTMEDIA);
 
        /* set the bus interface characteristics */
-       at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
-                       | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
+       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));

diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index 8507dd0..ae28101 100644 (file)
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -233,15 +233,15 @@ void __init at91_add_device_nand(struct at91_nand_data *data)
        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_(0) | AT91_SMC_NCS_WRSETUP_(0)
-                       | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
+       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_(2) | AT91_SMC_NCS_WRPULSE_(5)
-                       | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
+       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_(7) | AT91_SMC_NRDCYCLE_(7));
+       at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
 
-       at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1));
+       at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
 
        /* enable pin */
        if (data->enable_pin)