Introduce force-update method for assert and deassert interface, which force the write operation in case the read already happens to return the correct value.
Signed-off-by: Crystal Guo <[email protected]> --- drivers/reset/reset-ti-syscon.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/reset/reset-ti-syscon.c b/drivers/reset/reset-ti-syscon.c index 1c74bcb9a6c3..f4baf78afd14 100644 --- a/drivers/reset/reset-ti-syscon.c +++ b/drivers/reset/reset-ti-syscon.c @@ -57,6 +57,7 @@ struct ti_syscon_reset_data { struct ti_syscon_reset_control *controls; unsigned int nr_controls; bool assert_deassert_together; + bool update_force; }; #define to_ti_syscon_reset_data(rcdev) \ @@ -90,7 +91,10 @@ static int ti_syscon_reset_assert(struct reset_controller_dev *rcdev, mask = BIT(control->assert_bit); value = (control->flags & ASSERT_SET) ? mask : 0x0; - return regmap_update_bits(data->regmap, control->assert_offset, mask, value); + if (data->update_force) + return regmap_write_bits(data->regmap, control->assert_offset, mask, value); + else + return regmap_update_bits(data->regmap, control->assert_offset, mask, value); } /** @@ -121,7 +125,10 @@ static int ti_syscon_reset_deassert(struct reset_controller_dev *rcdev, mask = BIT(control->deassert_bit); value = (control->flags & DEASSERT_SET) ? mask : 0x0; - return regmap_update_bits(data->regmap, control->deassert_offset, mask, value); + if (data->update_force) + return regmap_write_bits(data->regmap, control->deassert_offset, mask, value); + else + return regmap_update_bits(data->regmap, control->deassert_offset, mask, value); } /** @@ -223,6 +230,10 @@ static int ti_syscon_reset_probe(struct platform_device *pdev) data->assert_deassert_together = true; else data->assert_deassert_together = false; + if (of_property_read_bool(np, "update-force")) + data->update_force = true; + else + data->update_force = false; data->rcdev.ops = &ti_syscon_reset_ops; data->rcdev.owner = THIS_MODULE; -- 2.18.0
