Hi Stefan,
On Tue, Apr 09 2019, Stefan Roese wrote:
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?
Access to other registers might hang as well, I have not tested. The debug register is the only one that the .bind callback touches. .bind callbacks are called before board_early_init_f() that configures the MPP.
baruch
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)); }
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