[U-Boot] [PATCH] i2c: mvtwsi: fix hang on SPL bind

Stefan Roese
2019-04-09T15:18:24Z

Hi Baruch,

On 07.04.19 11:30, Baruch Siach wrote:
> The mvebu specific debug register is not accessible when the bind code
> runs in SPL. Skip it.

The other I2C registers can be accessed but only the debug register
not? Do you know, why this is the case?

Thanks,
Stefan

> Signed-off-by: Baruch Siach <baruch@tkos.co.il>
> ---
> drivers/i2c/mvtwsi.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c
> index 74ac0a4aa789..05560e112729 100644
> --- a/drivers/i2c/mvtwsi.c
> +++ b/drivers/i2c/mvtwsi.c
> @@ -801,6 +801,10 @@ static int mvtwsi_i2c_ofdata_to_platdata(struct udevice *bus)
>
> static void twsi_disable_i2c_slave(struct mvtwsi_registers *twsi)
> {
> + /* The debug register is not accessible in early boot */
> + if (IS_ENABLED(CONFIG_SPL_BUILD))
> + return;
> +
> clrbits_le32(&twsi->debug, BIT(18));
> }
>
>