[U-Boot] [PATCH 2/2] exynos: smdk5250: Enable the pinmux setup
Chander Kashyap
chander.kashyap at linaro.org
Wed May 23 08:05:15 CEST 2012
Hi,
On 4 May 2012 12:26, Rajeshwari Shinde <rajeshwari.s at samsung.com> wrote:
> Use the pinmux configuration function for SMDK5250.
>
> Signed-off-by: Abhilash Kesavan <a.kesavan at samsung.com>
> Signed-off-by: Rajeshwari Shinde <rajeshwari.s at samsung.com>
> ---
> arch/arm/cpu/armv7/exynos/Makefile | 2 +-
> board/samsung/smdk5250/smdk5250.c | 160 ++++++------------------------------
> 2 files changed, 26 insertions(+), 136 deletions(-)
>
> diff --git a/arch/arm/cpu/armv7/exynos/Makefile b/arch/arm/cpu/armv7/exynos/Makefile
> index 90ec2bd..9119961 100644
> --- a/arch/arm/cpu/armv7/exynos/Makefile
> +++ b/arch/arm/cpu/armv7/exynos/Makefile
> @@ -22,7 +22,7 @@ include $(TOPDIR)/config.mk
>
> LIB = $(obj)lib$(SOC).o
>
> -COBJS += clock.o power.o soc.o system.o
> +COBJS += clock.o power.o soc.o system.o pinmux.o
>
> SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
> OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS))
> diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
> index 32786e2..4c0398d 100644
> --- a/board/samsung/smdk5250/smdk5250.c
> +++ b/board/samsung/smdk5250/smdk5250.c
> @@ -26,6 +26,7 @@
> #include <asm/arch/cpu.h>
> #include <asm/arch/gpio.h>
> #include <asm/arch/mmc.h>
> +#include <asm/arch/pinmux.h>
> #include <asm/arch/sromc.h>
>
> DECLARE_GLOBAL_DATA_PTR;
> @@ -35,72 +36,7 @@ struct exynos5_gpio_part1 *gpio1;
Do we need this declaration as gpio init is done using pinmux.
And remove the same from board_init.
> static void smc9115_pre_init(void)
> {
> u32 smc_bw_conf, smc_bc_conf;
> - int i;
> -
> - /*
> - * SROM:CS1 and EBI
> - *
> - * GPY0[0] SROM_CSn[0]
> - * GPY0[1] SROM_CSn[1](2)
> - * GPY0[2] SROM_CSn[2]
> - * GPY0[3] SROM_CSn[3]
> - * GPY0[4] EBI_OEn(2)
> - * GPY0[5] EBI_EEn(2)
> - *
> - * GPY1[0] EBI_BEn[0](2)
> - * GPY1[1] EBI_BEn[1](2)
> - * GPY1[2] SROM_WAIT(2)
> - * GPY1[3] EBI_DATA_RDn(2)
> - */
> - s5p_gpio_cfg_pin(&gpio1->y0, CONFIG_ENV_SROM_BANK, GPIO_FUNC(2));
> - s5p_gpio_cfg_pin(&gpio1->y0, 4, GPIO_FUNC(2));
> - s5p_gpio_cfg_pin(&gpio1->y0, 5, GPIO_FUNC(2));
> -
> - for (i = 0; i < 4; i++)
> - s5p_gpio_cfg_pin(&gpio1->y1, i, GPIO_FUNC(2));
> -
> - /*
> - * EBI: 8 Addrss Lines
> - *
> - * GPY3[0] EBI_ADDR[0](2)
> - * GPY3[1] EBI_ADDR[1](2)
> - * GPY3[2] EBI_ADDR[2](2)
> - * GPY3[3] EBI_ADDR[3](2)
> - * GPY3[4] EBI_ADDR[4](2)
> - * GPY3[5] EBI_ADDR[5](2)
> - * GPY3[6] EBI_ADDR[6](2)
> - * GPY3[7] EBI_ADDR[7](2)
> - *
> - * EBI: 16 Data Lines
> - *
> - * GPY5[0] EBI_DATA[0](2)
> - * GPY5[1] EBI_DATA[1](2)
> - * GPY5[2] EBI_DATA[2](2)
> - * GPY5[3] EBI_DATA[3](2)
> - * GPY5[4] EBI_DATA[4](2)
> - * GPY5[5] EBI_DATA[5](2)
> - * GPY5[6] EBI_DATA[6](2)
> - * GPY5[7] EBI_DATA[7](2)
> - *
> - * GPY6[0] EBI_DATA[8](2)
> - * GPY6[1] EBI_DATA[9](2)
> - * GPY6[2] EBI_DATA[10](2)
> - * GPY6[3] EBI_DATA[11](2)
> - * GPY6[4] EBI_DATA[12](2)
> - * GPY6[5] EBI_DATA[13](2)
> - * GPY6[6] EBI_DATA[14](2)
> - * GPY6[7] EBI_DATA[15](2)
> - */
> - for (i = 0; i < 8; i++) {
> - s5p_gpio_cfg_pin(&gpio1->y3, i, GPIO_FUNC(2));
> - s5p_gpio_set_pull(&gpio1->y3, i, GPIO_PULL_UP);
> -
> - s5p_gpio_cfg_pin(&gpio1->y5, i, GPIO_FUNC(2));
> - s5p_gpio_set_pull(&gpio1->y5, i, GPIO_PULL_UP);
> -
> - s5p_gpio_cfg_pin(&gpio1->y6, i, GPIO_FUNC(2));
> - s5p_gpio_set_pull(&gpio1->y6, i, GPIO_PULL_UP);
> - }
> + int err;
>
> /* Ethernet needs data bus width of 16 bits */
> smc_bw_conf = SROMC_DATA16_WIDTH(CONFIG_ENV_SROM_BANK)
> @@ -112,6 +48,11 @@ static void smc9115_pre_init(void)
> | SROMC_BC_PMC(0x01);
>
> /* Select and configure the SROMC bank */
> + err = exynos_pinmux_config(PERIPH_ID_SROMC,
> + CONFIG_ENV_SROM_BANK | PINMUX_FLAG_16BIT);
> + if (err < 0)
> + debug("SROMC not configured\n");
> +
> s5p_config_sromc(CONFIG_ENV_SROM_BANK, smc_bw_conf, smc_bc_conf);
> }
> #endif
> @@ -186,31 +127,12 @@ int checkboard(void)
> #ifdef CONFIG_GENERIC_MMC
> int board_mmc_init(bd_t *bis)
> {
> - int i, err;
> -
> - /*
> - * MMC2 SD card GPIO:
> - *
> - * GPC2[0] SD_2_CLK(2)
> - * GPC2[1] SD_2_CMD(2)
> - * GPC2[2] SD_2_CDn
> - * GPC2[3:6] SD_2_DATA[0:3](2)
> - */
> - for (i = 0; i < 7; i++) {
> - /* GPC2[0:6] special function 2 */
> - s5p_gpio_cfg_pin(&gpio1->c2, i, GPIO_FUNC(0x2));
> + int err;
>
> - /* GPK2[0:6] drv 4x */
> - s5p_gpio_set_drv(&gpio1->c2, i, GPIO_DRV_4X);
> -
> - /* GPK2[0:1] pull disable */
> - if (i == 0 || i == 1) {
> - s5p_gpio_set_pull(&gpio1->c2, i, GPIO_PULL_NONE);
> - continue;
> - }
> -
> - /* GPK2[2:6] pull up */
> - s5p_gpio_set_pull(&gpio1->c2, i, GPIO_PULL_UP);
> + err = exynos_pinmux_config(PERIPH_ID_SDMMC2, PINMUX_FLAG_NONE);
> + if (err < 0) {
> + debug("SDMMC2 not configured\n");
> + return err;
> }
>
> err = s5p_mmc_init(2, 4);
> @@ -220,55 +142,23 @@ int board_mmc_init(bd_t *bis)
>
> static void board_uart_init(void)
> {
> - struct exynos5_gpio_part1 *gpio1 =
> - (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
> - int i;
> + int err;
>
> - /*
> - * 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));
> - }
> + err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE);
> + if (err < 0)
> + debug("UART0 not configured\n");
>
> - /*
> - * 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));
> - }
> + err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE);
> + if (err < 0)
> + debug("UART1 not configured\n");
>
> - /*
> - * 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));
> - }
> + err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE);
> + if (err < 0)
> + debug("UART2 not configured\n");
>
> - /*
> - * There's no mux for UART4--it's internal only
> - */
> + err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
> + if (err < 0)
> + debug("UART3 not configured\n");
> }
>
> #ifdef CONFIG_BOARD_EARLY_INIT_F
> --
> 1.7.4.4
>
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--
with warm regards,
Chander Kashyap
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