Signed-off-by: Asen Dimov dimov@ronetix.at --- Note: This patch was a part of patches, but it is better to be done step by step and so this patch is a split from the patch series with message id: 1307606409-29818-2-git-send-email-dimov@ronetix.at and Patchwork: http://patchwork.ozlabs.org/patch/99665/
Changes for v2: - add CONFIG_AT91_GPIO_PIULLUP - reneme at91_serial3_hw_init() to at91_seriald_hw_init() - remove at91_serial_hw_init()
arch/arm/cpu/arm926ejs/at91/at91sam9261_devices.c | 62 ++++++++++----------- arch/arm/include/asm/arch-at91/at91sam9261.h | 1 + 2 files changed, 30 insertions(+), 33 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9261_devices.c b/arch/arm/cpu/arm926ejs/at91/at91sam9261_devices.c index b4353ef..68401f6 100644 --- a/arch/arm/cpu/arm926ejs/at91/at91sam9261_devices.c +++ b/arch/arm/cpu/arm926ejs/at91/at91sam9261_devices.c @@ -23,77 +23,73 @@ */
#include <common.h> +#include <asm/io.h> #include <asm/arch/at91_common.h> #include <asm/arch/at91_pmc.h> #include <asm/arch/gpio.h> -#include <asm/arch/io.h> + +/* + * if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all + * peripheral pins. Good to have if hardware is soldered optionally + * or in case of SPI no slave is selected. Avoid lines to float + * needlessly. Use a short local PUP define. + * + * Due to errata "TXD floats when CTS is inactive" pullups are always + * on for TXD pins. + */ +#ifdef CONFIG_AT91_GPIO_PULLUP +# define PUP CONFIG_AT91_GPIO_PULLUP +#else +# define PUP 0 +#endif
void at91_serial0_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTC, 8, 1); /* TXD0 */ at91_set_a_periph(AT91_PIO_PORTC, 9, 0); /* RXD0 */ - writel(1 << AT91SAM9261_ID_US0, &pmc->pcer); + writel(1 << ATMEL_ID_USART0, &pmc->pcer); }
void at91_serial1_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTC, 12, 1); /* TXD1 */ at91_set_a_periph(AT91_PIO_PORTC, 13, 0); /* RXD1 */ - writel(1 << AT91SAM9261_ID_US1, &pmc->pcer); + writel(1 << ATMEL_ID_USART1, &pmc->pcer); }
void at91_serial2_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTC, 14, 1); /* TXD2 */ at91_set_a_periph(AT91_PIO_PORTC, 15, 0); /* RXD2 */ - writel(1 << AT91SAM9261_ID_US2, &pmc->pcer); + writel(1 << ATMEL_ID_USART2, &pmc->pcer); }
-void at91_serial3_hw_init(void) +void at91_seriald_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 9, 0); /* DRXD */ at91_set_a_periph(AT91_PIO_PORTA, 10, 1); /* DTXD */ - writel(1 << AT91_ID_SYS, &pmc->pcer); -} - -void at91_serial_hw_init(void) -{ -#ifdef CONFIG_USART0 - at91_serial0_hw_init(); -#endif - -#ifdef CONFIG_USART1 - at91_serial1_hw_init(); -#endif - -#ifdef CONFIG_USART2 - at91_serial2_hw_init(); -#endif - -#ifdef CONFIG_USART3 /* DBGU */ - at91_serial3_hw_init(); -#endif + writel(1 << ATMEL_ID_SYS, &pmc->pcer); }
#ifdef CONFIG_HAS_DATAFLASH void at91_spi0_hw_init(unsigned long cs_mask) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 0, 0); /* SPI0_MISO */ at91_set_a_periph(AT91_PIO_PORTA, 1, 0); /* SPI0_MOSI */ at91_set_a_periph(AT91_PIO_PORTA, 2, 0); /* SPI0_SPCK */
/* Enable clock */ - writel(1 << AT91SAM9261_ID_SPI0, &pmc->pcer); + writel(1 << ATMEL_ID_SPI0, &pmc->pcer);
if (cs_mask & (1 << 0)) { at91_set_a_periph(AT91_PIO_PORTA, 3, 1); @@ -123,14 +119,14 @@ void at91_spi0_hw_init(unsigned long cs_mask)
void at91_spi1_hw_init(unsigned long cs_mask) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTB, 30, 0); /* SPI1_MISO */ at91_set_a_periph(AT91_PIO_PORTB, 31, 0); /* SPI1_MOSI */ at91_set_a_periph(AT91_PIO_PORTB, 29, 0); /* SPI1_SPCK */
/* Enable clock */ - writel(1 << AT91SAM9261_ID_SPI1, &pmc->pcer); + writel(1 << ATMEL_ID_SPI1, &pmc->pcer);
if (cs_mask & (1 << 0)) { at91_set_a_periph(AT91_PIO_PORTB, 28, 1); diff --git a/arch/arm/include/asm/arch-at91/at91sam9261.h b/arch/arm/include/asm/arch-at91/at91sam9261.h index c85fd29..a07f273 100644 --- a/arch/arm/include/asm/arch-at91/at91sam9261.h +++ b/arch/arm/include/asm/arch-at91/at91sam9261.h @@ -125,6 +125,7 @@ * Other misc defines */ #define ATMEL_PIO_PORTS 3 /* theese SoCs have 3 PIO */ +#define ATMEL_PMC_UHP AT91SAM926x_PMC_UHP #define ATMEL_BASE_PIO ATMEL_BASE_PIOA
/*