This patch activates VDD1, VDD2 and VPLL1 when booting. This is necessary because these resources are in warm reset state after a reboot. This means their voltage levels cannot be modified so DVFS and smartreflex don't work.
Signed-off-by: Peter 'p2' De Schrijver <[email protected]> --- drivers/regulator/twl4030-regulator.c | 18 +++++++++++++++++- 1 files changed, 17 insertions(+), 1 deletions(-) diff --git a/drivers/regulator/twl4030-regulator.c b/drivers/regulator/twl4030-regulator.c index 80a4e10..ab2a726 100644 --- a/drivers/regulator/twl4030-regulator.c +++ b/drivers/regulator/twl4030-regulator.c @@ -506,6 +506,22 @@ static int twl4030reg_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, rdev); + /* VDD1, VDD2 and VPLL1 are left in warm reset state after a reboot. + * We need to put them back to active state for DVFS and smartreflex. + */ + + if (twl4030_send_pb_msg(MSG_SINGULAR(DEV_GRP_P1, RES_VDD1, + RES_STATE_ACTIVE)) < 0) + pr_err("Unable to activate VDD1\n"); + + if (twl4030_send_pb_msg(MSG_SINGULAR(DEV_GRP_P1, RES_VDD2, + RES_STATE_ACTIVE)) < 0) + pr_err("Unable to activate VDD2\n"); + + if (twl4030_send_pb_msg(MSG_SINGULAR(DEV_GRP_P1, RES_VPLL1, + RES_STATE_ACTIVE)) < 0) + pr_err("Unable to activate VPLL1\n"); + /* NOTE: many regulators support short-circuit IRQs (presentable * as REGULATOR_OVER_CURRENT notifications?) configured via: * - SC_CONFIG -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
