[PATCH] Nokia RX-51: Decrease i2c speed to 100000

[Lokesh Vutla]

On 22/11/20 4:00 am, Pali Rohár wrote:
> It looks like that i2c bus lot of times timeout on some units. Prior
> migration to CONFIG_DM_I2C i2c speed was set to CONFIG_SYS_OMAP24_I2C_SPEED
> value which was 100000. Lower speed fixes timeout problems, so change speed
> back to its previous value.
> 
> Signed-off-by: Pali Rohár <pali at kernel.org>
> Fixes: 8d8c18170325 ("Nokia RX-51: Convert to CONFIG_DM_I2C")

Applied to u-boot-ti/for-next branch

Thanks and regards,
Lokesh

> ---
> Please include this patch into U-Boot master branch for 2020.01 release
> to have i2c bus working.
> ---
>  board/nokia/rx51/rx51.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/board/nokia/rx51/rx51.c b/board/nokia/rx51/rx51.c
> index 3d62b5d9ad..2dd41604c9 100644
> --- a/board/nokia/rx51/rx51.c
> +++ b/board/nokia/rx51/rx51.c
> @@ -704,9 +704,9 @@ void board_mmc_power_init(void)
>  }
>  
>  static const struct omap_i2c_platdata rx51_i2c[] = {
> -	{ I2C_BASE1, 2200000, OMAP_I2C_REV_V1 },
> +	{ I2C_BASE1, 100000, OMAP_I2C_REV_V1 },
>  	{ I2C_BASE2, 100000, OMAP_I2C_REV_V1 },
> -	{ I2C_BASE3, 400000, OMAP_I2C_REV_V1 },
> +	{ I2C_BASE3, 100000, OMAP_I2C_REV_V1 },
>  };
>  
>  U_BOOT_DEVICES(rx51_i2c) = {
>