[U-Boot] [PATCH 6/6] WIP: arm: trats: add support for new I2C framework
Heiko Schocher
hs at denx.de
Fri Nov 16 11:45:38 CET 2012
Hello Piotr,
On 15.11.2012 09:15, Piotr Wilczek wrote:
> This enables new i2c framework on Trats board.
> Hardware s3c24x0 i2c driver is used instead of software i2c.
>
> Signed-off-by: Piotr Wilczek<p.wilczek at samsung.com>
> Signed-off-by: Kyungmin Park<kyungmin.park at samsung.com>
> CC: Minkyu Kang<mk7.kang at samsung.com>
> ---
> board/samsung/trats/trats.c | 26 +++++++++++++++++++++-----
> include/configs/trats.h | 16 ++++++++++++++--
> 2 files changed, 35 insertions(+), 7 deletions(-)
>
> diff --git a/board/samsung/trats/trats.c b/board/samsung/trats/trats.c
> index e11a892..71e1975 100644
> --- a/board/samsung/trats/trats.c
> +++ b/board/samsung/trats/trats.c
> @@ -24,8 +24,10 @@
> */
>
> #include<common.h>
> +#include<i2c.h>
> #include<lcd.h>
> #include<asm/io.h>
> +#include<asm/arch/pinmux.h>
> #include<asm/arch/cpu.h>
> #include<asm/arch/gpio.h>
> #include<asm/arch/mmc.h>
> @@ -61,6 +63,19 @@ static int hwrevision(int rev)
>
> struct s3c_plat_otg_data s5pc210_otg_data;
>
> +void i2c_init_pinmux(void)
> +{
> + int i, err;
> + for (i = 0; i< CONFIG_MAX_I2C_NUM; i++) {
> + err = exynos_pinmux_config((PERIPH_ID_I2C0 + i),
> + PINMUX_FLAG_NONE);
> + if (err) {
> + debug("I2C%d not configured\n", (PERIPH_ID_I2C0 + i));
> + return;
> + }
> + }
> +}
> +
Is this change multibus specific? Why?
> int board_init(void)
> {
> gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
> @@ -68,6 +83,8 @@ int board_init(void)
> check_hw_revision();
> printf("HW Revision:\t0x%x\n", board_rev);
>
> + i2c_init_pinmux();
> +
Why this call not in i2c_init_board(void)?
> #if defined(CONFIG_PMIC)
> pmic_init();
> #endif
> @@ -77,14 +94,9 @@ int board_init(void)
>
> void i2c_init_board(void)
> {
> - struct exynos4_gpio_part1 *gpio1 =
> - (struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1();
> struct exynos4_gpio_part2 *gpio2 =
> (struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
>
> - /* I2C_5 -> PMIC */
> - s5p_gpio_direction_output(&gpio1->b, 7, 1);
> - s5p_gpio_direction_output(&gpio1->b, 6, 1);
Here again, what has this to do with the new multibus framework?
> /* I2C_9 -> FG */
> s5p_gpio_direction_output(&gpio2->y4, 0, 1);
> s5p_gpio_direction_output(&gpio2->y4, 1, 1);
> @@ -415,6 +427,8 @@ static int lcd_power(void)
> int ret = 0;
> struct pmic *p = get_pmic();
>
> + i2c_set_bus_num(0);
^
Fix number? Please use here a define.
> +
> if (pmic_probe(p))
> return 0;
>
> @@ -475,6 +489,8 @@ static int mipi_power(void)
> int ret = 0;
> struct pmic *p = get_pmic();
>
> + i2c_set_bus_num(0);
> +
> if (pmic_probe(p))
> return 0;
>
> diff --git a/include/configs/trats.h b/include/configs/trats.h
> index 106fd37..54423f4 100644
> --- a/include/configs/trats.h
> +++ b/include/configs/trats.h
> @@ -33,6 +33,7 @@
> #define CONFIG_SAMSUNG /* in a SAMSUNG core */
> #define CONFIG_S5P /* which is in a S5P Family */
> #define CONFIG_EXYNOS4210 /* which is in a EXYNOS4210 */
> +#define CONFIG_EXYNOS4
> #define CONFIG_TRATS /* working with TRATS */
> #define CONFIG_TIZEN /* TIZEN lib */
>
> @@ -211,18 +212,29 @@
> #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_LOAD_ADDR - GENERATED_GBL_DATA_SIZE)
> #define CONFIG_SYS_CACHELINE_SIZE 32
>
> -
> #define CONFIG_SYS_I2C
> #define CONFIG_SYS_I2C_SOFT /* I2C bit-banged */
> #define CONFIG_SYS_I2C_SOFT_SPEED 50000
> #define CONFIG_SYS_I2C_SOFT_SLAVE 0xFE
> -#define CONFIG_SYS_I2C_ADAPTERS {&soft_i2c_adap[0]}
Why you delete here this adapter? You can use now in the new
Framework Hard and soft i2c adapter ...
> #define CONFIG_SOFT_I2C_READ_REPEATED_START
> #define CONFIG_SYS_I2C_INIT_BOARD
> #define CONFIG_I2C_MULTI_BUS
> #define CONFIG_SOFT_I2C_MULTI_BUS
> #define CONFIG_SYS_MAX_I2C_BUS 15
>
> +#define CONFIG_HARD_I2C
No longer needed
> +#define CONFIG_DRIVER_S3C24X0_I2C
> +#define CONFIG_MAX_I2C_NUM 8
> +#define CONFIG_SYS_I2C_SPEED 100000
> +#define CONFIG_SYS_I2C_SLAVE 0x0
This defines please rename, as posted in previous EMail ...
> +#define CONFIG_CMD_I2C
> +
> +#define CONFIG_SYS_I2C_ADAPTERS {&s3c24x0_i2c_adap[5]}
> +#define CONFIG_SYS_NUM_I2C_ADAPTERS 1
> +#define CONFIG_SYS_I2C_BUSSES {{0, {{{0, "S3C24X0"}, 0x00, 5}}}, \
You use here only one bus, so you do not need to define this here.
> + }
> +#define CONFIG_SYS_NUM_I2C_BUSSES 1
> +
> #include<asm/arch/gpio.h>
>
> /* I2C PMIC */
bye,
Heiko
--
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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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