leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

sunxi: Fix clock_twi_onoff for sun6i

Browse Source 
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>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2016-03-16 20:44:51 +01:00
parent 80e5f83c0f
commit 730d2f3a41
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm/cpu/armv7/sunxi/clock_sun6i.c
View File

@ -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;
}