On 13 February 2012 23:08, Doug Anderson dianders@chromium.org wrote:
This properly configures the mux to enable all UARTs.
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 dianders@chromium.org
Changes in v2:
- Removed #ifdefs and tested SERIAL_MULTI by setting stdin/out/err to
s5pserN and validating that serial moved.
board/samsung/smdk5250/smdk5250.c | 44 +++++++++++++++++++++++++++++++++++- 1 files changed, 42 insertions(+), 2 deletions(-)
diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c index 928c08f..32786e2 100644 --- a/board/samsung/smdk5250/smdk5250.c +++ b/board/samsung/smdk5250/smdk5250.c @@ -224,11 +224,51 @@ 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++) {
- /*
- * 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)); }
- /*
- * 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 resistor 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));
- }
- /*
- * 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 resistor 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));
- }
- /*
- * 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));
- }
- /*
- * There's no mux for UART4--it's internal only
- */
}
#ifdef CONFIG_BOARD_EARLY_INIT_F
1.7.7.3
Acked-by: Chander kashyap chander.kashyap@linaro.org