4.19-stable review patch. If anyone has any objections, please let me know.
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From: Mark Zhang markz@nvidia.com
commit 0ab66b3c326ef8f77dae9f528118966365757c0c upstream.
If regulator DT node doesn't exist, its of_parse_cb callback function isn't called. Then all values for DT properties are filled with zero. This leads to wrong register update for FPS and POK settings.
Signed-off-by: Jinyoung Park jinyoungp@nvidia.com Signed-off-by: Mark Zhang markz@nvidia.com Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/regulator/max77620-regulator.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/regulator/max77620-regulator.c +++ b/drivers/regulator/max77620-regulator.c @@ -1,7 +1,7 @@ /* * Maxim MAX77620 Regulator driver * - * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved. * * Author: Mallikarjun Kasoju mkasoju@nvidia.com * Laxman Dewangan ldewangan@nvidia.com @@ -803,6 +803,14 @@ static int max77620_regulator_probe(stru rdesc = &rinfo[id].desc; pmic->rinfo[id] = &max77620_regs_info[id]; pmic->enable_power_mode[id] = MAX77620_POWER_MODE_NORMAL; + pmic->reg_pdata[id].active_fps_src = -1; + pmic->reg_pdata[id].active_fps_pd_slot = -1; + pmic->reg_pdata[id].active_fps_pu_slot = -1; + pmic->reg_pdata[id].suspend_fps_src = -1; + pmic->reg_pdata[id].suspend_fps_pd_slot = -1; + pmic->reg_pdata[id].suspend_fps_pu_slot = -1; + pmic->reg_pdata[id].power_ok = -1; + pmic->reg_pdata[id].ramp_rate_setting = -1;
ret = max77620_read_slew_rate(pmic, id); if (ret < 0)