> This properly configures the mux to enable the right UART depending on > the setting of CONFIG_SERIALX. > > This also fixes things so that we don't configure balls XUCTSN_1 and > XURTSN_1 as UART1 configuration (RTS/CTS), since they aren't > connected. > > Signed-off-by: Doug Anderson <diand...@chromium.org> > --- > board/samsung/smdk5250/smdk5250.c | 49 > +++++++++++++++++++++++++++++++++++- 1 files changed, 47 insertions(+), 2 > deletions(-) > > diff --git a/board/samsung/smdk5250/smdk5250.c > b/board/samsung/smdk5250/smdk5250.c index 928c08f..61b8634 100644 > --- a/board/samsung/smdk5250/smdk5250.c > +++ b/board/samsung/smdk5250/smdk5250.c > @@ -224,11 +224,56 @@ static void board_uart_init(void) > (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1(); > int i; > > - /* UART1 GPIOs (part1) : GPA0CON[7:4] 0x2222 */ > - for (i = 4; i < 8; i++) { > +#if defined(CONFIG_SERIAL0) > + /* > + * UART0 GPIOs : GPA0CON[3:0] 0x2222 > + * Must set CFG17 switches to select UART0 to use. > + */ > + for (i = 0; i <= 3; i++) { > s5p_gpio_set_pull(&gpio1->a0, i, GPIO_PULL_NONE); > s5p_gpio_cfg_pin(&gpio1->a0, i, GPIO_FUNC(0x2)); > } > +#elif defined(CONFIG_SERIAL1) > + /* > + * UART1 GPIOs : GPA0CON[5:4] 0x22 > + * Must set CFG17 switches to select UART1 to use. > + * > + * This only sets RXD/TXD, as RTS/CTS need a resister soldered down > + * in order to use them (so that those pins can be used for I2C). > + */ > + for (i = 4; i <= 5; i++) { > + s5p_gpio_set_pull(&gpio1->a0, i, GPIO_PULL_NONE); > + s5p_gpio_cfg_pin(&gpio1->a0, i, GPIO_FUNC(0x2)); > + } > +#elif defined(CONFIG_SERIAL2) > + /* > + * UART2 GPIOs : GPA1CON[1:0] 0x22 > + * Must set CFG17 switches to select UART2 to use. > + * > + * This only sets RXD/TXD, as RTS/CTS need a resister soldered down > + * in order to use them (so that those pins can be used for I2C). > + */ > + for (i = 0; i <= 1; i++) { > + s5p_gpio_set_pull(&gpio1->a1, i, GPIO_PULL_NONE); > + s5p_gpio_cfg_pin(&gpio1->a1, i, GPIO_FUNC(0x2)); > + } > +#elif defined(CONFIG_SERIAL3) > + /* > + * UART3 GPIOs : GPA1CON[5:4] 0x22 > + * Must set CFG16 switches to select UART3 to use. > + */ > + for (i = 4; i <= 5; i++) { > + s5p_gpio_set_pull(&gpio1->a1, i, GPIO_PULL_NONE); > + s5p_gpio_cfg_pin(&gpio1->a1, i, GPIO_FUNC(0x2)); > + } > +#elif defined(CONFIG_SERIAL4) > + /* > + * There's no mux for UART4--it's internal only > + */ > +#error "Can't set console to serial 4--it's not exposed" > +#else > +#error "Unknown serial config" > +#endif > } > > #ifdef CONFIG_BOARD_EARLY_INIT_F
Uhm ... CONFIG_SERIAL_MULTI? Also, you can configure the mux just like that, without all this macro crap, can't you? Why not do it like that? M _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot