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| author | Amaury Pouly <amaury.pouly@gmail.com> | 2014-03-08 18:21:44 +0100 |
|---|---|---|
| committer | Amaury Pouly <amaury.pouly@gmail.com> | 2014-03-08 18:51:54 +0100 |
| commit | 9fe368792369fc5b81e752328ae80062bce56201 (patch) | |
| tree | d20d03069a9e54cb6778321c07b0210c4fae2fc1 /firmware/target/arm | |
| parent | 4b2f59b3db7d378a42dfebd39e4e3b4ccc8280f8 (diff) | |
imx233: fix regulator code on stmp3700
For some reason the power subsystem needs to know the relationship between
the VDD{D,A,IO} and uses a weird register to do so.
Change-Id: I7fcc75f6cc0460b4997914986deda7ca544a4940
Diffstat (limited to 'firmware/target/arm')
| -rw-r--r-- | firmware/target/arm/imx233/power-imx233.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/power-imx233.c b/firmware/target/arm/imx233/power-imx233.c index 0a4482fa08..c374644c0b 100644 --- a/firmware/target/arm/imx233/power-imx233.c +++ b/firmware/target/arm/imx233/power-imx233.c @@ -355,6 +355,19 @@ void imx233_power_get_regulator(enum imx233_regulator_t reg, unsigned *value_mv, *brownout_mv = 0; } +#if IMX233_SUBTARGET >= 3700 && IMX233_SUBTARGET < 3780 +static void update_dcfuncv(void) +{ + int vddd, vdda, vddio; + imx233_power_get_regulator(REGULATOR_VDDD, &vddd, NULL); + imx233_power_get_regulator(REGULATOR_VDDA, &vdda, NULL); + imx233_power_get_regulator(REGULATOR_VDDIO, &vddio, NULL); + // assume Li-Ion, to divide by 6.25, do *100 and /625 + HW_POWER_DCFUNCV = BF_OR2(POWER_DCFUNCV, VDDIO(((vddio - vdda) * 100) / 625), + VDDD(((vdda - vddd) * 100) / 625)); +} +#endif + void imx233_power_set_regulator(enum imx233_regulator_t reg, unsigned value_mv, unsigned brownout_mv) { @@ -393,6 +406,10 @@ void imx233_power_set_regulator(enum imx233_regulator_t reg, unsigned value_mv, if(!BF_RD(POWER_STS, DC1_OK) || !BF_RD(POWER_STS, DC2_OK)) panicf("regulator %d: failed to stabilize", reg); #endif + /* On STMP37xx, we need to update the weird HW_POWER_DCFUNCV register */ +#if IMX233_SUBTARGET >= 3700 && IMX233_SUBTARGET < 3780 + update_dcfuncv(); +#endif } // offset is -1,0 or 1 |