diff options
| author | Arash Golgol <arash.golgol@gmail.com> | 2026-08-12 16:20:54 +0330 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-08-12 17:48:37 +0100 |
| commit | e739acbe05b06de78ef7089470f122432f651faa (patch) | |
| tree | 75bb5cd5424ae39693f5952639c60c51f5429f7a | |
| parent | 6ab838a01b12f9d101c26ff8cebbf4029a8c9e09 (diff) | |
regulator: fan53555: Add support for FAN53555BUC23X type
FAN53555BUC23X has the ID 0 and REV 0xc, starts at 600mV and
increments in 12.5mV steps.
Per the datasheet, the FAN53555BUC23X (23 option) is grouped with
the 00 and 13 options for soft-start timing (t_SS = 300us typ.),
so the existing enable_time = 400 is reused here as well.
This variant is found on the ASUS Tinker Edge R (RK3399Pro) as the
supply regulator for both vdd_gpu and vdd_cpu_b. Verified across
the full GPU OPP table with the userspace devfreq governor.
Signed-off-by: Arash Golgol <arash.golgol@gmail.com>
Link: https://patch.msgid.link/20260812125054.19111-1-arash.golgol@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/regulator/fan53555.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c index 85f46874eb49..6557d8cbe98d 100644 --- a/drivers/regulator/fan53555.c +++ b/drivers/regulator/fan53555.c @@ -114,6 +114,7 @@ enum { enum { FAN53555_CHIP_REV_00 = 0x3, FAN53555_CHIP_REV_13 = 0xf, + FAN53555_CHIP_REV_23 = 0xc, }; enum { @@ -306,6 +307,11 @@ static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di) di->vsel_step = 10000; di->enable_time = 400; break; + case FAN53555_CHIP_REV_23: + di->vsel_min = 600000; + di->vsel_step = 12500; + di->enable_time = 400; + break; default: dev_err(di->dev, "Chip ID %d with rev %d not supported!\n", |