The clock_sun6i.c implementation was not deasserting the reset for the regular i2c controllers, this commit fixes this.
Signed-off-by: Hans de Goede hdegoede@redhat.com --- arch/arm/cpu/armv7/sunxi/clock_sun6i.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c index 700b605..4e1e1a4 100644 --- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c +++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c @@ -100,13 +100,18 @@ int clock_twi_onoff(int port, int state) return 0; }
- /* set the apb clock gate for twi */ - if (state) + /* set the apb clock gate and reset for twi */ + if (state) { setbits_le32(&ccm->apb2_gate, CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT+port)); - else + setbits_le32(&ccm->apb2_reset_cfg, + 1 << (APB2_RESET_TWI_SHIFT + port)); + } else { + clrbits_le32(&ccm->apb2_reset_cfg, + 1 << (APB2_RESET_TWI_SHIFT + port)); clrbits_le32(&ccm->apb2_gate, CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT+port)); + }
return 0; }