xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

regulator: da9061/62: Adjust LDO voltage selection minimum value

Browse Source 
According to the DA9061 and DA9062 datasheets the LDO voltage selection
registers have a lower value of 0x02. This applies to voltage registers
VLDO1_A, VLDO2_A, VLDO3_A and VLDO4_A. This linear offset of 0x02 was
previously not observed by the driver, causing the LDO output voltage to
be systematically lower by two steps (= 0.1V).

This patch fixes the minimum linear selector offset by setting it to a
value of 2 and increases the n_voltages by the same amount allowing
voltages in the range 0x02 -> 0.9V to 0x38 -> 3.6V to be correctly
selected. Also fixes an incorrect calculaton for the n_voltages value in
the regulator LDO2.

These fixes effect all LDO regulators for DA9061 and DA9062.

Acked-by: Steve Twiss <stwiss.opensource@diasemi.com>
Tested-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Felix Riemann <felix.riemann@sma.de>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Felix Riemann
2019-06-20 08:45:00 +01:00
committed by Mark Brown
parent 0211f68e62
commit fd5d10059d
2 changed files with 27 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/mfd/da9062/registers.h
View File

@@ -797,6 +797,9 @@
#define DA9062AA_BUCK3_SL_A_SHIFT 7
#define DA9062AA_BUCK3_SL_A_MASK BIT(7)
/* DA9062AA_VLDO[1-4]_A common */
#define DA9062AA_VLDO_A_MIN_SEL 2
/* DA9062AA_VLDO1_A = 0x0A9 */
#define DA9062AA_VLDO1_A_SHIFT 0
#define DA9062AA_VLDO1_A_MASK 0x3f